Merge pull request 'fix(wsl): remove non-existent interop options' (#43) from fix/wsl-interop-options into main

Reviewed-on: #43

.editorconfig

@@ -0,0 +1,19 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{nix,yaml,yml,json,md,sh,toml}]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+# Markdown uses trailing whitespace for hard line breaks.
+[*.md]
+trim_trailing_whitespace = false

.gitea/workflows/ci.yaml

@@ -1,35 +1,72 @@
-# Flake CI: formatting gate + evaluation of every host configuration.
+# Flake CI: full `nix flake check` (formatting + deadnix + statix + pre-commit)
+# plus an explicit per-host evaluation pass for granular output.
 name: CI
 
+# Deliberately no `paths:` filter. This job is a required status check on main,
+# and a path-filtered workflow is *skipped* (never runs) for PRs that touch no
+# matching file -- which leaves the required check pending forever and blocks the
+# merge (e.g. a .renovaterc.json-only change). So the workflow always runs and
+# always reports. To avoid burning a full Nix evaluation on changes that can't
+# affect it, the "detect" step below diffs the PR and the heavy steps run only
+# when a .nix file, flake.lock, or this workflow changed; otherwise they skip and
+# the job still passes. The required check is therefore always green-reportable.
 on:
   push:
     branches: [main]
-    paths:
-      - "**.nix"
-      - "flake.lock"
-      - ".gitea/workflows/ci.yaml"
   pull_request:
-    paths:
-      - "**.nix"
-      - "flake.lock"
-      - ".gitea/workflows/ci.yaml"
 
 jobs:
   flake:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+        with:
+          # Full history so the detect step can diff the PR against its base.
+          fetch-depth: 0
+
+      # Decide whether the Nix steps need to run. On a pull_request, diff the PR
+      # against its base and look for files that can affect the flake: any .nix,
+      # the lockfile, or this workflow. On any other event (push to main) always
+      # run. The job itself always succeeds, so the required status check is
+      # reported even when the heavy steps are skipped.
+      - name: Detect Nix-relevant changes
+        id: detect
+        run: |
+          set -euo pipefail
+          if [ "${{ github.event_name }}" != "pull_request" ]; then
+            echo "Event ${{ github.event_name }}: running full checks."
+            echo "run=true" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+          base='${{ github.event.pull_request.base.sha }}'
+          head='${{ github.event.pull_request.head.sha }}'
+          changed=$(git diff --name-only "$base...$head")
+          echo "Changed files:"
+          echo "$changed"
+          if echo "$changed" | grep -Eq '(\.nix$|^flake\.lock$|^\.gitea/workflows/ci\.yaml$)'; then
+            echo "Nix-relevant changes found: running checks."
+            echo "run=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "No Nix-relevant changes: skipping checks (job still passes)."
+            echo "run=false" >> "$GITHUB_OUTPUT"
+          fi
 
       - name: Install Nix
+        if: steps.detect.outputs.run == 'true'
         uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31
         with:
           extra_nix_config: |
             experimental-features = nix-command flakes
             accept-flake-config = true
+            substituters = https://cache.nixos.org https://nix-community.cachix.org
+            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=
 
-      - name: Check formatting
+      # Runs every flake check: treefmt formatting, deadnix, statix, and the
-        run: nix build --print-build-logs '.#checks.x86_64-linux.formatting'
+      # pre-commit hooks (so a --no-verify commit can't ship unlinted).
+      - name: Flake check
+        if: steps.detect.outputs.run == 'true'
+        run: nix flake check --print-build-logs
 
       # Evaluate (not build) each host's toplevel so eval errors fail CI cheaply.
       # aarch64 / darwin hosts evaluate fine on an x86_64 runner; only building
@@ -39,6 +76,7 @@ jobs:
       # nixos/darwinConfigurations) rather than hard-coded, so adding or removing
       # a host needs no change to this workflow.
       - name: Evaluate NixOS host configurations
+        if: steps.detect.outputs.run == 'true'
         run: |
           set -euo pipefail
           hosts=$(nix eval --raw '.#nixosConfigurations' \
@@ -51,6 +89,7 @@ jobs:
           done
 
       - name: Evaluate Darwin host configurations
+        if: steps.detect.outputs.run == 'true'
         run: |
           set -euo pipefail
           hosts=$(nix eval --raw '.#darwinConfigurations' \

.renovaterc.json

@@ -1,16 +1,13 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": [
+  "extends": ["config:recommended", ":dependencyDashboard", ":semanticCommits"],
-    "config:recommended",
-    ":dependencyDashboard",
-    ":semanticCommits"
-  ],
   "nix": {
     "enabled": true
   },
   "lockFileMaintenance": {
     "enabled": true,
-    "schedule": ["before 6am on monday"]
+    "schedule": ["before 6am on monday"],
+    "automerge": true
   },
   "git-submodules": {
     "enabled": false

README.md

@@ -7,17 +7,21 @@ single flake.
 
 Defined in the host table in [`flake.nix`](./flake.nix):
 
-| Configuration       | System          | Machine                                  |
+| Configuration         | System           | Machine                                                                                                              |
-| ------------------- | --------------- | ---------------------------------------- |
+| --------------------- | ---------------- | -------------------------------------------------------------------------------------------------------------------- |
-| `lyrathorpe-mbp`      | `aarch64-linux`  | MacBook Pro (Apple Silicon, Asahi)                                  |
+| `lyrathorpe-mbp`      | `aarch64-linux`  | MacBook Pro (Apple Silicon, Asahi)                                                                                   |
-| `lyrathorpe-t400`     | `x86_64-linux`   | ThinkPad T400 — [install notes](./system/machine/T400/README.md)   |
+| `lyrathorpe-t400`     | `x86_64-linux`   | ThinkPad T400 — [install notes](./system/machine/T400/README.md)                                                     |
-| `lyrathorpe-macpro31` | `x86_64-linux`   | Mac Pro 3,1, desktop — [install notes](./system/machine/MacPro31/README.md) |
+| `lyrathorpe-macpro31` | `x86_64-linux`   | Mac Pro 3,1, desktop — [install notes](./system/machine/MacPro31/README.md)                                          |
-| `emmathorpe-edaas`    | `x86_64-linux`   | Work WSL box (NixOS-WSL)                                            |
+| `emmathorpe-edaas`    | `x86_64-linux`   | Work WSL box (NixOS-WSL)                                                                                             |
-| `lyrathorpe-mac`      | `aarch64-darwin` | macOS (nix-darwin)                                                  |
+| `lyrathorpe-rpi5`     | `aarch64-linux`  | Raspberry Pi 5 headless server: Docker host + nginx reverse proxy — [install notes](./system/machine/RPi5/README.md) |
+| `lyrathorpe-mac`      | `aarch64-darwin` | macOS (nix-darwin)                                                                                                   |
 
 Shared layers: `lyrathorpe/home` (home-manager: shell, git, editor),
-`system/modules/common-nixos.nix` (all NixOS hosts), and
+`system/modules/common-nixos.nix` (all NixOS hosts: fonts, nix-ld, caches),
-`system/modules/laptop.nix` (the physical laptops).
+`system/modules/workstation.nix` (physical graphical hosts: audio, thermald,
+earlyoom, fwupd), `system/modules/laptop.nix` (laptops: Wi-Fi, Bluetooth, power,
+lid), and `system/modules/ssh.nix` (key-only sshd). The x86 hosts also pull
+`nixos-hardware` profiles.
 
 ## Applying
 
@@ -38,26 +42,44 @@ darwin-rebuild switch --flake .#lyrathorpe-mac
 ## Login / greeter
 
 Graphical (Sway) hosts log in through a Wayland greeter — `greetd` running
-ReGreet inside the `cage` kiosk compositor — configured centrally in
+ReGreet inside the `cage` kiosk compositor — implemented in
 [`lyrathorpe/swaywm.nix`](./lyrathorpe/swaywm.nix), gated on
-`features.swayDesktop.enable`. The greeter is forced to Dvorak to match the
+`features.swayDesktop.enable` (the option is declared in
-console and Sway session. Hosts with `features.swayDesktop.enable = false` (the
+[`system/modules/features.nix`](./system/modules/features.nix), so headless hosts
-WSL work box) keep plain TTY login. The target account needs a password
+can leave it off without importing `swaywm.nix`). The greeter is forced to Dvorak
+to match the console and Sway session. Headless hosts (the WSL work box and the
+Raspberry Pi server) keep plain TTY login. The target account needs a password
 (`passwd <user>`) before it can log in.
 
 ## MacBook (Asahi) firmware
 
 The MBP host references `system/modules/firmware/` for Apple peripheral
-firmware (Wi-Fi/Bluetooth). Those blobs are **not** redistributable, so the
+firmware (Wi-Fi/Bluetooth). These blobs are **committed** (tracked) even though
-directory is gitignored and a clean checkout will not build `lyrathorpe-mbp`
+`.gitignore` lists the directory: the flake is `git+file`, so it only sees
-until it is populated out-of-band.
+tracked files — untracking them breaks `lyrathorpe-mbp` evaluation (and the CI
+host-eval) because the config can't find the firmware. They are not
+redistributable; the repo is private.
 
-Copy the firmware extracted during the Asahi install (from
+To refresh them, copy the firmware extracted during the Asahi install (from
-`/etc/nixos/firmware` on the freshly-installed machine, or re-extract per the
+`/etc/nixos/firmware`, or re-extract per the
 [Asahi NixOS docs](https://github.com/tpwrules/nixos-apple-silicon)) into
-`system/modules/firmware/` before rebuilding that host.
+`system/modules/firmware/` and commit with `git add -f`.
+
+## Development
+
+A dev shell and a formatting/lint gate are wired through the flake:
+
+- `nix develop` — shell with `deadnix`, `statix`, `treefmt`, and the git
+  `pre-commit` hooks (installed automatically on first entry).
+- `nix fmt` — formats the tree via `treefmt` (nixfmt + shfmt + prettier;
+  generated files and `flake.lock` are excluded).
+- `nix flake check` — runs formatting, `deadnix`, `statix`, the pre-commit
+  hooks, and evaluates every host. `.editorconfig` carries the base style;
+  `statix.toml` disables the two house-style lints (`repeated_keys`,
+  `empty_pattern`).
 
 ## CI
 
-[`.gitea/workflows/ci.yaml`](./.gitea/workflows/ci.yaml) gates `nixfmt`
+[`.gitea/workflows/ci.yaml`](./.gitea/workflows/ci.yaml) runs `nix flake check`
-formatting and evaluates every NixOS and Darwin host configuration on push/PR.
+(formatting, `deadnix`, `statix`, the pre-commit hooks) and evaluates every
+NixOS and Darwin host configuration on push/PR.

flake.lock

@@ -3,16 +3,16 @@
     "brew-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1779646357,
+        "lastModified": 1781226006,
-        "narHash": "sha256-rnnAaESXxItX4D9xCMGvs3hfDBjbbTYht7OluRcvT8k=",
+        "narHash": "sha256-w4ZTuOnhYiDxjaynrMTASzp802QblBWmo3wpB8wVN4Y=",
         "owner": "Homebrew",
         "repo": "brew",
-        "rev": "10a163ac127624caa80cc5cc5a705e97f3615b0e",
+        "rev": "109191be4988470b51a60a5ef1998520aa24c01b",
         "type": "github"
       },
       "original": {
         "owner": "Homebrew",
-        "ref": "5.1.14",
+        "ref": "6.0.1",
         "repo": "brew",
         "type": "github"
       }
@@ -25,11 +25,11 @@
       },
       "locked": {
         "dir": "pkgs/firefox-addons",
-        "lastModified": 1780977789,
+        "lastModified": 1782014564,
-        "narHash": "sha256-UFJfQlvInbsVaTK5XC2lafdqWlwiNP5LuQFYfDKq6Dc=",
+        "narHash": "sha256-F/royQHyJAyKWKrV8AaG4Yf1yjzxa+PFk5xvTdvBrzk=",
         "owner": "rycee",
         "repo": "nur-expressions",
-        "rev": "0b627f105ea3baa2fa10308a6a67a8f8cbbb3e2a",
+        "rev": "d6668e34bbce788459883a1097bf0ee170f49c61",
         "type": "gitlab"
       },
       "original": {
@@ -40,6 +40,22 @@
       }
     },
     "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1767039857,
+        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_2": {
       "locked": {
         "lastModified": 1761640442,
         "narHash": "sha256-AtrEP6Jmdvrqiv4x2xa5mrtaIp3OEe8uBYCDZDS+hu8=",
@@ -54,7 +70,7 @@
         "type": "github"
       }
     },
-    "flake-compat_2": {
+    "flake-compat_3": {
       "flake": false,
       "locked": {
         "lastModified": 1767039857,
@@ -90,6 +106,70 @@
         "type": "github"
       }
     },
+    "flake-parts_2": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "nixvim",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1778716662,
+        "narHash": "sha256-m1Yf0wZ8j1OHjTc2UwHwyQRSnNeSgLJOd7q5Y45hzi4=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "f7c1a2d347e4c52d5fb8d10cb4d94b5884e546fb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1781733627,
+        "narHash": "sha256-U3yTuGBnmXvXoQI3qkpfEDsn9RovQPAjN7ndRco+3u0=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "3bbec39bc90eadfa031e6f3b77272f3f60803e39",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -97,11 +177,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1780361225,
+        "lastModified": 1781981105,
-        "narHash": "sha256-wnV9ttf4fPWNonBIQmvlrSlNpQYgx5HgWWd007mwIFA=",
+        "narHash": "sha256-/1nNBbA7PrSQpTc9Qazkhl4kIPg+TNl0CjxS3UQJKlw=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "e28654b71096e08c019d4861ca26acb646f583d8",
+        "rev": "7bfff44b465909f69a442701293bc0badcf476dc",
         "type": "github"
       },
       "original": {
@@ -118,11 +198,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1780789116,
+        "lastModified": 1781772065,
-        "narHash": "sha256-+/LcDMJGYQVLp3ECZ1jBhj3GcQU+Yt+OTsDsQFz8cMs=",
+        "narHash": "sha256-xIbRSwDB1GBAUsWsQZUjudGfAGQt3BOpsWaO/ugVa4w=",
         "owner": "nix-darwin",
         "repo": "nix-darwin",
-        "rev": "731951a251ca96cbd12a8e1bde63737e21947644",
+        "rev": "adda04f0bf4819575b1978c2f8d78401b3c2be12",
         "type": "github"
       },
       "original": {
@@ -137,11 +217,11 @@
         "brew-src": "brew-src"
       },
       "locked": {
-        "lastModified": 1780492467,
+        "lastModified": 1781389246,
-        "narHash": "sha256-zMEJwtQPmsPPgPczFkyjWHgd1z0HagOPS2Wt2WDYLJY=",
+        "narHash": "sha256-ORqLAo/hoJdsZC7UPAuEHev6S0+XIqKEC7vjo5prz1k=",
         "owner": "zhaofengli",
         "repo": "nix-homebrew",
-        "rev": "562332f97de9f5ba51aa647d70462e88222b2988",
+        "rev": "de7953a08ed4bb9245be043e468561c17b89130d",
         "type": "github"
       },
       "original": {
@@ -157,11 +237,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1780816331,
+        "lastModified": 1782030356,
-        "narHash": "sha256-0BYqs8yKWkOz2Q7+SP18N5E5gmDKSo6LSxIVIa0wWes=",
+        "narHash": "sha256-h4WpMr455AfRub0FXBaon6Vcpe0waUyJ4GivIW6oyd4=",
         "owner": "nix-community",
         "repo": "nix-index-database",
-        "rev": "1a2ea89c917781e88508d9fd2b507f2d2a0e173c",
+        "rev": "3017088b49efd404f78e3b104f553b97e4af786b",
         "type": "github"
       },
       "original": {
@@ -172,17 +252,17 @@
     },
     "nixos-apple-silicon": {
       "inputs": {
-        "flake-compat": "flake-compat",
+        "flake-compat": "flake-compat_2",
         "nixpkgs": [
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1780669925,
+        "lastModified": 1781520503,
-        "narHash": "sha256-inOQx/s7GQjh9bcCjCHXAeX0EHX+sOQUBoo8+bs48ME=",
+        "narHash": "sha256-XuqQQG1qRyc3o8ld937sDLQNx+QrGV852KJ0dNglJDg=",
         "owner": "nix-community",
         "repo": "nixos-apple-silicon",
-        "rev": "5880026520a3fd248d59e1c81c4e4e111aefc6af",
+        "rev": "43043ad207529650f9fa68e1705f7cf9c08bfdeb",
         "type": "github"
       },
       "original": {
@@ -191,19 +271,39 @@
         "type": "github"
       }
     },
-    "nixos-wsl": {
+    "nixos-hardware": {
       "inputs": {
-        "flake-compat": "flake-compat_2",
         "nixpkgs": [
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1780765279,
+        "lastModified": 1781622756,
-        "narHash": "sha256-md6QHmlIx40bQkun43M2eT8aav5GURGkXEMFwof6uZs=",
+        "narHash": "sha256-JrPh4M6S7aPsEE9tOENuZrxC6o2szSLlK+t4+nLke9s=",
+        "owner": "NixOS",
+        "repo": "nixos-hardware",
+        "rev": "08018c72174a4df5657f8d94178ac69fb9c243e5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixos-hardware",
+        "type": "github"
+      }
+    },
+    "nixos-wsl": {
+      "inputs": {
+        "flake-compat": "flake-compat_3",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1781182279,
+        "narHash": "sha256-V5EQQbDnmdiXGQXrEF1PEL7QYsFqfH8N1E89Z5ONwFk=",
         "owner": "nix-community",
         "repo": "NixOS-WSL",
-        "rev": "3e6d8af994e2a2d31af7a91863d7c0d6e278d951",
+        "rev": "5675822ba756e6e56f8f6a5a76e90e0da2ece94d",
         "type": "github"
       },
       "original": {
@@ -214,11 +314,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1780734595,
+        "lastModified": 1781216227,
-        "narHash": "sha256-DmTfP92QFYRLOGXlMIE54MAgxSJjDWocl3gRNOu72Os=",
+        "narHash": "sha256-9mUW6gNwoN2SWc/l0fW4svPNOulXLl8ijqKyeSOGgJE=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9b696460ac78b5ccfc17c854d8c976f20456e943",
+        "rev": "a0374025a863d007d98e3297f6aa46cc3141c2f0",
         "type": "github"
       },
       "original": {
@@ -230,11 +330,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1780243769,
+        "lastModified": 1781577229,
-        "narHash": "sha256-x5UQuRsH3MqI0U9afaXSNqzTPSeZlRLvFAav2Ux1pNw=",
+        "narHash": "sha256-lrp67w8AulE9Ks53n27I45ADSzbOCn4H+CNW1Ck8B+8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "331800de5053fcebacf6813adb5db9c9dca22a0c",
+        "rev": "567a49d1913ce81ac6e9582e3553dd90a955875f",
         "type": "github"
       },
       "original": {
@@ -244,18 +344,80 @@
         "type": "github"
       }
     },
+    "nixvim": {
+      "inputs": {
+        "flake-parts": "flake-parts_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1781971008,
+        "narHash": "sha256-T2u2RQZWKvD1J+TgcxjiJr8IymBr/PrUNeAGhMZFZU4=",
+        "owner": "nix-community",
+        "repo": "nixvim",
+        "rev": "7afca458f064f166d3a9c98db3b41a984fe46492",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "nixos-26.05",
+        "repo": "nixvim",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "firefox-addons": "firefox-addons",
         "flake-parts": "flake-parts",
+        "git-hooks": "git-hooks",
         "home-manager": "home-manager",
         "nix-darwin": "nix-darwin",
         "nix-homebrew": "nix-homebrew",
         "nix-index-database": "nix-index-database",
         "nixos-apple-silicon": "nixos-apple-silicon",
+        "nixos-hardware": "nixos-hardware",
         "nixos-wsl": "nixos-wsl",
         "nixpkgs": "nixpkgs",
-        "nixpkgs-unstable": "nixpkgs-unstable"
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "nixvim": "nixvim",
+        "treefmt-nix": "treefmt-nix"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1780220602,
+        "narHash": "sha256-eynAfOmbmxJnkp7YewvCEbShNnnYJ9gLLqkzsYtBPeM=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "db947814a175b7ca6ded66e21383d938df01c227",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -34,6 +34,32 @@
       url = "github:nix-community/nix-index-database";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    # treefmt-nix: one multi-language formatter driving `nix fmt` and the
+    # formatting flake check (nixfmt + shfmt + prettier).
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    # git-hooks.nix: declarative pre-commit hooks (nixfmt/deadnix/statix),
+    # installed into the repo via the devShell.
+    git-hooks = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    # Declarative Neovim (the editor; see lyrathorpe/home/editor.nix). Release
+    # branch matched to the pinned nixpkgs (26.05); follows our nixpkgs to keep a
+    # single nixpkgs in the closure. editor.nix sets programs.nixvim.nixpkgs.source
+    # to this same input so the home module doesn't warn about the pin.
+    nixvim = {
+      url = "github:nix-community/nixvim/nixos-26.05";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    # Curated per-hardware profiles (microcode, SSD, platform quirks) for the
+    # physical x86 hosts.
+    nixos-hardware = {
+      url = "github:NixOS/nixos-hardware";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -53,12 +79,14 @@
       let
         # claude-code tracks nixpkgs-unstable regardless of the pinned nixpkgs.
         overlays = [
-          (final: prev: {
+          (_final: prev: {
-            claude-code =
+            inherit
               (import nixpkgs-unstable {
                 inherit (prev.stdenv.hostPlatform) system;
                 config.allowUnfree = true;
-              }).claude-code;
+              })
+              claude-code
+              ;
           })
         ];
 
@@ -86,6 +114,7 @@
         baseModules = [
           ./lyrathorpe/user.nix
           ./system/modules/common-nixos.nix
+          ./system/modules/features.nix
           commonModule
           home-manager.nixosModules.home-manager
           {
@@ -210,6 +239,14 @@
             modules = [
               ./system/machine/T400/configuration.nix
               ./system/modules/laptop.nix
+              ./system/modules/ssh.nix
+              # No t400-specific profile exists; compose the generic ThinkPad +
+              # laptop/SSD/Intel building blocks (tp_smapi/acpi_call for battery
+              # thresholds, SSD + microcode defaults).
+              inputs.nixos-hardware.nixosModules.lenovo-thinkpad
+              inputs.nixos-hardware.nixosModules.common-pc-laptop
+              inputs.nixos-hardware.nixosModules.common-pc-laptop-ssd
+              inputs.nixos-hardware.nixosModules.common-cpu-intel
               ./lyrathorpe/swaywm.nix
             ];
             homeModules = [
@@ -226,6 +263,9 @@
             modules = [
               ./system/machine/MacPro31/configuration.nix
               ./system/modules/desktop.nix
+              ./system/modules/ssh.nix
+              inputs.nixos-hardware.nixosModules.common-pc-ssd
+              inputs.nixos-hardware.nixosModules.common-cpu-intel
               ./lyrathorpe/swaywm.nix
             ];
             homeModules = [
@@ -245,9 +285,25 @@
             ];
             homeModules = [
               ./lyrathorpe/home
-              ./system/modules/work/default.nix
+              ./lyrathorpe/home/work.nix
             ];
           };
+
+          lyrathorpe-rpi5 = {
+            system = "aarch64-linux";
+            username = "lyrathorpe";
+            fullName = "Lyra Thorpe";
+            portable = false;
+            # Headless server: Docker host + nginx reverse proxy. No swaywm.nix
+            # (no desktop); the raspberry-pi-5 profile supplies kernel/firmware,
+            # ssh.nix adds key-only sshd.
+            modules = [
+              ./system/machine/RPi5/configuration.nix
+              inputs.nixos-hardware.nixosModules.raspberry-pi-5
+              ./system/modules/ssh.nix
+            ];
+            homeModules = [ ./lyrathorpe/home ];
+          };
         };
 
         # Darwin host table — macOS machines built via mkDarwinHost. The shared
@@ -268,6 +324,13 @@
         };
       in
       {
+        # flake-parts modules: treefmt-nix wires `nix fmt` + a formatting check;
+        # git-hooks.nix wires the pre-commit check + devShell installation script.
+        imports = [
+          inputs.treefmt-nix.flakeModule
+          inputs.git-hooks.flakeModule
+        ];
+
         systems = [
           "x86_64-linux"
           "aarch64-linux"
@@ -279,26 +342,68 @@
         # nixpkgs instance for that system. Outputs here become per-system
         # attrsets automatically (e.g. devShells.<system>.default).
         perSystem =
-          { pkgs, ... }:
+          { config, pkgs, ... }:
           {
-            # `nix fmt` formatter for the repo.
+            # treefmt drives `nix fmt` and the formatting check below. nixfmt
-            formatter = pkgs.nixfmt;
+            # stays the .nix formatter (the tree is already nixfmt-formatted);
+            # shfmt covers shell and prettier covers markdown/yaml/json.
+            treefmt = {
+              projectRootFile = "flake.nix";
+              programs.nixfmt.enable = true;
+              programs.shfmt.enable = true;
+              programs.prettier.enable = true;
+              # Generated hardware-configuration.nix files are not hand-edited.
+              settings.global.excludes = [
+                "*/hardware-configuration.nix" # generated by nixos-generate-config
+                "flake.lock" # generated by `nix flake lock`
+              ];
+            };
+
+            # Pre-commit hooks: format + lint gate run on commit. The same hooks
+            # are exposed as a flake check (pre-commit.check.enable defaults true).
+            pre-commit.settings = {
+              # Generated by nixos-generate-config; don't lint/reformat (treefmt
+              # excludes them too).
+              excludes = [ "hardware-configuration\\.nix$" ];
+              hooks = {
+                nixfmt-rfc-style.enable = true;
+                deadnix = {
+                  enable = true;
+                  # Unused module args ({config,lib,pkgs,...}) are normal; only
+                  # flag genuinely dead bindings.
+                  settings.noLambdaPatternNames = true;
+                };
+                statix.enable = true; # reads statix.toml (repeated_keys/empty_pattern disabled)
+              };
+            };
+
+            # treefmt-nix exposes its own `checks.treefmt`; alias it to
+            # `formatting` so the existing CI gate (.#checks.*.formatting) keeps
+            # working without churn.
+            checks.formatting = config.treefmt.build.check inputs.self;
+
+            # deadnix / statix lints as standalone flake checks so `nix flake
+            # check` flags dead code and antipatterns independently of pre-commit.
+            checks.deadnix = pkgs.runCommandLocal "check-deadnix" { nativeBuildInputs = [ pkgs.deadnix ]; } ''
+              deadnix --fail --no-lambda-pattern-names ${./.} && touch $out
+            '';
+            checks.statix = pkgs.runCommandLocal "check-statix" { nativeBuildInputs = [ pkgs.statix ]; } ''
+              statix check -c ${./.} ${./.} && touch $out
+            '';
 
             # `nix develop` shell with the tooling needed to hack on this flake.
+            # shellHook installs the git pre-commit hooks into the working tree.
             devShells.default = pkgs.mkShellNoCC {
               packages = with pkgs; [
                 nixfmt
                 nil
                 git
+                deadnix
+                statix
+                treefmt
               ];
+              shellHook = config.pre-commit.installationScript;
             };
-
-            checks.formatting =
-              pkgs.runCommandLocal "check-formatting" { nativeBuildInputs = [ pkgs.nixfmt ]; }
-                ''
-                  # Generated hardware-configuration.nix files are excluded.
-                  nixfmt --check $(find ${./.} -name '*.nix' -not -name 'hardware-configuration.nix') && touch $out
-                '';
           };
 
         # Realise the host tables: each entry becomes a {nixos,darwin}Configuration.

lyrathorpe/home/KEYBINDINGS.md

@@ -4,12 +4,13 @@ Every keyboard shortcut configured across this desktop, and where it is defined.
 Everything here is managed declaratively through Nix — edit the listed file and
 rebuild, never the generated dotfiles.
 
-| Area | Defined in |
+| Area              | Defined in                                                                                                            |
-| --- | --- |
+| ----------------- | --------------------------------------------------------------------------------------------------------------------- |
 | Sway (compositor) | [`sway.nix`](./sway.nix) `config.keybindings` + `config.modes`, plus the home-manager Sway module's built-in defaults |
-| tmux | [`shell.nix`](./shell.nix) `programs.tmux` |
+| tmux              | [`shell.nix`](./shell.nix) `programs.tmux`                                                                            |
-| zsh line editor | [`shell.nix`](./shell.nix) `programs.zsh.historySubstringSearch` |
+| zsh line editor   | [`shell.nix`](./shell.nix) `programs.zsh.historySubstringSearch`                                                      |
-| foot (terminal) | foot package defaults — only colours are themed (in `sway.nix`) |
+| Neovim            | [`editor.nix`](./editor.nix) `programs.nixvim`                                                                        |
+| foot (terminal)   | foot package defaults — only colours are themed (in `sway.nix`)                                                       |
 
 **Conventions**
 
@@ -26,49 +27,49 @@ rebuild, never the generated dotfiles.
 
 ### Applications & session
 
-| Shortcut | Action |
+| Shortcut            | Action                                                  |
-| --- | --- |
+| ------------------- | ------------------------------------------------------- |
-| `Super`+`Return` | Open a terminal (foot) |
+| `Super`+`Return`    | Open a terminal (foot)                                  |
-| `Super`+`Space` | App launcher (sway-launcher-desktop in a floating foot) |
+| `Super`+`Space`     | App launcher (sway-launcher-desktop in a floating foot) |
-| `Super`+`d` | App launcher (same as above; module default) |
+| `Super`+`d`         | App launcher (same as above; module default)            |
-| `Super`+`e` | File manager (nemo) |
+| `Super`+`e`         | File manager (nemo)                                     |
-| `Super`+`c` | Clipboard history picker (clipman → fuzzel) |
+| `Super`+`c`         | Clipboard history picker (clipman → fuzzel)             |
-| `Super`+`l` | Lock screen (swaylock) |
+| `Super`+`l`         | Lock screen (swaylock)                                  |
-| `Super`+`Shift`+`q` | Close the focused window |
+| `Super`+`Shift`+`q` | Close the focused window                                |
-| `Super`+`Shift`+`c` | Reload the Sway config |
+| `Super`+`Shift`+`c` | Reload the Sway config                                  |
-| `Super`+`Shift`+`e` | Exit Sway (asks for confirmation) |
+| `Super`+`Shift`+`e` | Exit Sway (asks for confirmation)                       |
 
 ### Focus
 
-| Shortcut | Action |
+| Shortcut                | Action                                   |
-| --- | --- |
+| ----------------------- | ---------------------------------------- |
-| `Super`+`←`/`↓`/`↑`/`→` | Move focus by direction |
+| `Super`+`←`/`↓`/`↑`/`→` | Move focus by direction                  |
-| `Super`+`h`/`j`/`k` | Move focus left / down / up (vim-style) |
+| `Super`+`h`/`j`/`k`     | Move focus left / down / up (vim-style)  |
-| `Super`+`a` | Focus the parent container |
+| `Super`+`a`             | Focus the parent container               |
-| `Super`+`Alt`+`Space` | Toggle focus between tiling and floating |
+| `Super`+`Alt`+`Space`   | Toggle focus between tiling and floating |
 
 > Note: vim focus-right would be `Super`+`l`, but that is bound to **lock** here;
 > use `Super`+`→`.
 
 ### Moving windows
 
-| Shortcut | Action |
+| Shortcut                        | Action                                   |
-| --- | --- |
+| ------------------------------- | ---------------------------------------- |
-| `Super`+`Shift`+`←`/`↓`/`↑`/`→` | Move the window by direction |
+| `Super`+`Shift`+`←`/`↓`/`↑`/`→` | Move the window by direction             |
 | `Super`+`Shift`+`h`/`j`/`k`/`l` | Move the window left / down / up / right |
-| `Super`+`Shift`+`Space` | Toggle the window floating |
+| `Super`+`Shift`+`Space`         | Toggle the window floating               |
 
 Mouse (with `Super` held): left-drag moves a window, right-drag resizes it.
 
 ### Layout
 
-| Shortcut | Action |
+| Shortcut    | Action                                                                                 |
-| --- | --- |
+| ----------- | -------------------------------------------------------------------------------------- |
-| `Super`+`b` | Split horizontally |
+| `Super`+`b` | Split horizontally                                                                     |
-| `Super`+`v` | Split vertically |
+| `Super`+`v` | Split vertically                                                                       |
-| `Super`+`s` | Stacking layout |
+| `Super`+`s` | Stacking layout                                                                        |
-| `Super`+`w` | Tabbed layout |
+| `Super`+`w` | Tabbed layout                                                                          |
-| `Super`+`f` | Toggle fullscreen |
+| `Super`+`f` | Toggle fullscreen                                                                      |
 | `Super`+`y` | **Layout submenu**: `s` stacking · `w` tabbed · `e` toggle split · `Return`/`Esc` exit |
 
 > The layout submenu's `e` (toggle split) is the home for that action since
@@ -76,49 +77,49 @@ Mouse (with `Super` held): left-drag moves a window, right-drag resizes it.
 
 ### Workspaces
 
-| Shortcut | Action |
+| Shortcut                | Action                            |
-| --- | --- |
+| ----------------------- | --------------------------------- |
-| `Super`+`1`…`0` | Switch to workspace 1…10 |
+| `Super`+`1`…`0`         | Switch to workspace 1…10          |
 | `Super`+`Shift`+`1`…`0` | Move the window to workspace 1…10 |
-| `Super`+`z` | Previous workspace |
+| `Super`+`z`             | Previous workspace                |
-| `Super`+`x` | Next workspace |
+| `Super`+`x`             | Next workspace                    |
 
 ### Scratchpad
 
-| Shortcut | Action |
+| Shortcut            | Action                            |
-| --- | --- |
+| ------------------- | --------------------------------- |
 | `Super`+`Shift`+`-` | Move the window to the scratchpad |
-| `Super`+`-` | Show / cycle the scratchpad |
+| `Super`+`-`         | Show / cycle the scratchpad       |
 
 ### Modes (submenus)
 
-| Shortcut | Action |
+| Shortcut            | Action                                                                                                       |
-| --- | --- |
+| ------------------- | ------------------------------------------------------------------------------------------------------------ |
-| `Super`+`r` | **Resize mode**: arrow keys resize; `Return`/`Esc` exit |
+| `Super`+`r`         | **Resize mode**: arrow keys resize; `Return`/`Esc` exit                                                      |
-| `Super`+`y` | **Layout mode** (see Layout above) |
+| `Super`+`y`         | **Layout mode** (see Layout above)                                                                           |
 | `Super`+`Shift`+`x` | **Power menu**: `l` lock · `e` log out · `s` sleep · `r` reboot · `Shift`+`s` shutdown · `Return`/`Esc` exit |
 
 ### Screenshots
 
-| Shortcut | Action |
+| Shortcut        | Action                                   |
-| --- | --- |
+| --------------- | ---------------------------------------- |
-| `Print` | Select a region → swappy (annotate/save) |
+| `Print`         | Select a region → swappy (annotate/save) |
-| `Shift`+`Print` | Focused window → swappy |
+| `Shift`+`Print` | Focused window → swappy                  |
 
 ### Audio & media
 
-| Shortcut | Action |
+| Shortcut                                        | Action                 |
-| --- | --- |
+| ----------------------------------------------- | ---------------------- |
-| `XF86AudioRaiseVolume` / `XF86AudioLowerVolume` | Volume ±5% (wpctl) |
+| `XF86AudioRaiseVolume` / `XF86AudioLowerVolume` | Volume ±5% (wpctl)     |
-| `XF86AudioMute` | Toggle output mute |
+| `XF86AudioMute`                                 | Toggle output mute     |
-| `XF86AudioMicMute` | Toggle microphone mute |
+| `XF86AudioMicMute`                              | Toggle microphone mute |
-| `XF86AudioPlay` | Play/pause (playerctl) |
+| `XF86AudioPlay`                                 | Play/pause (playerctl) |
-| `XF86AudioNext` / `XF86AudioPrev` | Next / previous track |
+| `XF86AudioNext` / `XF86AudioPrev`               | Next / previous track  |
 
 ### Brightness — laptops only
 
-| Shortcut | Action |
+| Shortcut                                        | Action                        |
-| --- | --- |
+| ----------------------------------------------- | ----------------------------- |
 | `XF86MonBrightnessUp` / `XF86MonBrightnessDown` | Backlight ±5% (brightnessctl) |
 
 Present only on portable hosts (T400, MBP); desktops have no internal backlight.
@@ -129,19 +130,19 @@ Present only on portable hosts (T400, MBP); desktops have no internal backlight.
 
 Prefix is **`Ctrl`+`b`** (default). Copy mode uses **vi** keys.
 
-| Shortcut | Action |
+| Shortcut                                | Action                                                                                       |
-| --- | --- |
+| --------------------------------------- | -------------------------------------------------------------------------------------------- |
-| `Ctrl`+`b` then `v` | Split into left/right panes |
+| `Ctrl`+`b` then `v`                     | Split into left/right panes                                                                  |
-| `Ctrl`+`b` then `s` | Split into top/bottom panes |
+| `Ctrl`+`b` then `s`                     | Split into top/bottom panes                                                                  |
-| `Ctrl`+`h`/`j`/`k`/`l` | Move between panes — and into/out of vim splits — seamlessly (vim-tmux-navigator, no prefix) |
+| `Ctrl`+`h`/`j`/`k`/`l`                  | Move between panes — and into/out of vim splits — seamlessly (vim-tmux-navigator, no prefix) |
-| `Alt`+`←`/`→`/`↑`/`↓` | Switch pane by direction (no prefix needed) |
+| `Alt`+`←`/`→`/`↑`/`↓`                   | Switch pane by direction (no prefix needed)                                                  |
-| `Ctrl`+`b` then `[` | Enter copy mode (then vi motions; `Space`/`Enter` to select/copy) |
+| `Ctrl`+`b` then `[`                     | Enter copy mode (then vi motions; `Space`/`Enter` to select/copy)                            |
-| `Ctrl`+`b` then `z` | Zoom / unzoom the focused pane |
+| `Ctrl`+`b` then `z`                     | Zoom / unzoom the focused pane                                                               |
-| `Ctrl`+`b` then `c` | New window |
+| `Ctrl`+`b` then `c`                     | New window                                                                                   |
-| `Ctrl`+`b` then `n` / `p` | Next / previous window |
+| `Ctrl`+`b` then `n` / `p`               | Next / previous window                                                                       |
-| `Ctrl`+`b` then `d` | Detach |
+| `Ctrl`+`b` then `d`                     | Detach                                                                                       |
-| `Ctrl`+`b` then `Ctrl`+`s` / `Ctrl`+`r` | Save / restore the session (resurrect; continuum also auto-saves and restores on start) |
+| `Ctrl`+`b` then `Ctrl`+`s` / `Ctrl`+`r` | Save / restore the session (resurrect; continuum also auto-saves and restores on start)      |
-| Mouse | Enabled — click to focus, drag borders, scroll, select |
+| Mouse                                   | Enabled — click to focus, drag borders, scroll, select                                       |
 
 > The stock split keys `%` and `"` are unbound; use `v` / `s` above. `Ctrl`+`b`
 > then `s` is therefore a split, not the session tree.
@@ -155,22 +156,61 @@ Prefix is **`Ctrl`+`b`** (default). Copy mode uses **vi** keys.
 
 Only colours are themed; these are foot's default key bindings.
 
-| Shortcut | Action |
+| Shortcut                                | Action                        |
-| --- | --- |
+| --------------------------------------- | ----------------------------- |
-| `Ctrl`+`Shift`+`c` / `Ctrl`+`Shift`+`v` | Copy / paste (clipboard) |
+| `Ctrl`+`Shift`+`c` / `Ctrl`+`Shift`+`v` | Copy / paste (clipboard)      |
-| `Shift`+`Insert` | Paste primary selection |
+| `Shift`+`Insert`                        | Paste primary selection       |
-| `Ctrl`+`Shift`+`r` | Search scrollback |
+| `Ctrl`+`Shift`+`r`                      | Search scrollback             |
-| `Ctrl`+`+` / `Ctrl`+`-` / `Ctrl`+`0` | Font larger / smaller / reset |
+| `Ctrl`+`+` / `Ctrl`+`-` / `Ctrl`+`0`    | Font larger / smaller / reset |
-| `Ctrl`+`Shift`+`u` | URL mode (jump to/open links) |
+| `Ctrl`+`Shift`+`u`                      | URL mode (jump to/open links) |
-| `Ctrl`+`Shift`+`n` | Spawn a new terminal |
+| `Ctrl`+`Shift`+`n`                      | Spawn a new terminal          |
-| `Shift`+`PageUp` / `Shift`+`PageDown` | Scroll back / forward |
+| `Shift`+`PageUp` / `Shift`+`PageDown`   | Scroll back / forward         |
+
+---
+
+## Neovim
+
+Leader is **`Space`**. `Ctrl`+`h/j/k/l` is shared with tmux (see above): it moves
+across vim splits and tmux panes seamlessly. Everything else is stock vim, plus:
+
+| Shortcut               | Action                                                    |
+| ---------------------- | --------------------------------------------------------- |
+| `,``,`                 | Toggle the file tree (nvim-tree) — comma pressed twice    |
+| `Ctrl`+`h`/`j`/`k`/`l` | Move between vim splits / tmux panes (vim-tmux-navigator) |
+| `<leader>ff`           | Find files (telescope)                                    |
+| `<leader>fg`           | Live grep (telescope)                                     |
+| `<leader>fb`           | Switch buffer (telescope)                                 |
+| `<leader>xx`           | Diagnostics list (trouble)                                |
+| `gc` / `gcc`           | Toggle comment (selection / line)                         |
+| `gd`                   | Go to definition (LSP)                                    |
+| `gr`                   | List references (LSP)                                     |
+| `K`                    | Hover documentation (LSP)                                 |
+| `<leader>rn`           | Rename symbol (LSP; `<leader>` is `Space`)                |
+| `<leader>ca`           | Code action (LSP)                                         |
+
+### Completion menu (nvim-cmp)
+
+Active only while the completion popup is open (it appears as you type, e.g.
+file paths):
+
+| Shortcut                | Action                                                             |
+| ----------------------- | ------------------------------------------------------------------ |
+| `Tab` / `Shift`+`Tab`   | Select next / previous item                                        |
+| `Ctrl`+`n` / `Ctrl`+`p` | Select next / previous item                                        |
+| `Ctrl`+`Space`          | Open the completion menu                                           |
+| `Enter`                 | Confirm the highlighted item (no auto-select; otherwise a newline) |
+| `Ctrl`+`e`              | Dismiss the menu                                                   |
+
+LSP covers Nix, Lua, Python and Terraform (the work box adds C# and Helm).
+Files are formatted on save (conform-nvim). `:Git` opens fugitive; gitsigns
+shows gutter signs. which-key pops up after `<leader>` to show the rest.
 
 ---
 
 ## zsh
 
-| Shortcut | Action |
+| Shortcut  | Action                                                                                             |
-| --- | --- |
+| --------- | -------------------------------------------------------------------------------------------------- |
 | `↑` / `↓` | History **substring** search — type a fragment first, then the arrows cycle matching past commands |
 
 Bound for both CSI and SS3 cursor sequences, so it works in foot, iTerm2 and

lyrathorpe/home/README.md

@@ -6,45 +6,61 @@ home-manager — edit the listed file and rebuild, never the generated dotfiles.
 
 Keyboard shortcuts have their own reference: [`KEYBINDINGS.md`](./KEYBINDINGS.md).
 
-| Area | Defined in |
+| Area                                   | Defined in                                            |
-| --- | --- |
+| -------------------------------------- | ----------------------------------------------------- |
-| zsh, CLI tools, tmux, ssh, auto-tmux | [`shell.nix`](./shell.nix) |
+| zsh, CLI tools, tmux, ssh, auto-tmux   | [`shell.nix`](./shell.nix)                            |
-| git (+ delta, commitizen) | [`git.nix`](./git.nix) |
+| git (+ delta, commitizen)              | [`git.nix`](./git.nix)                                |
-| vim | [`editor.nix`](./editor.nix) |
+| Neovim (nixvim) + LSP                  | [`editor.nix`](./editor.nix)                          |
-| GUI apps, GTK/Firefox theming, cursor | [`desktop.nix`](./desktop.nix) (graphical hosts only) |
+| Claude Code (CLAUDE.md, style, memory) | [`claude.nix`](./claude.nix)                          |
+| GUI apps, GTK/Firefox theming, cursor  | [`desktop.nix`](./desktop.nix) (graphical hosts only) |
 
 Shared by every host via [`default.nix`](./default.nix); the work box also layers
-[`../../system/modules/work/default.nix`](../../system/modules/work/default.nix)
+[`work.nix`](./work.nix) on top (work email, its own ssh config, extra packages,
-on top (work email, its own ssh config, extra packages).
+and the C#/Helm language servers).
 
 ---
 
 ## zsh
 
-| Feature | Notes |
+| Feature                  | Notes                                                                                                                                          |
-| --- | --- |
+| ------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------- |
-| oh-my-zsh | plugins `git`, `man`, `sudo` (Esc-Esc to prepend sudo), `colored-man-pages`, `extract`; theme `robbyrussell` |
+| oh-my-zsh                | plugins `git`, `man`, `sudo` (Esc-Esc to prepend sudo), `colored-man-pages`, `extract`; theme `robbyrussell`                                   |
-| Autosuggestion | fish-style history suggestions as you type (→ to accept) |
+| Autosuggestion           | fish-style history suggestions as you type (→ to accept)                                                                                       |
-| Syntax highlighting | commands coloured by validity as you type |
+| Syntax highlighting      | commands coloured by validity as you type                                                                                                      |
-| Completion | menu completion; the dump is rebuilt on every activation (see Maintenance) |
+| Completion               | menu completion; the dump is rebuilt on every activation (see Maintenance)                                                                     |
-| History | 100k in-memory/on-disk, deduped, space-prefixed commands ignored, timestamped, **shared live across sessions** |
+| History                  | 100k in-memory/on-disk, deduped, space-prefixed commands ignored, timestamped, **shared live across sessions**; file stays at `~/.zsh_history` |
-| History substring search | type a fragment, then ↑/↓ cycles matching past commands — works in foot, iTerm2 and the Linux TTY (both CSI and SS3 arrow encodings bound) |
+| Dotfiles location        | `dotDir` is `~/.config/zsh` (XDG) — `.zshrc`/`.zshenv`/`.zcompdump` live there; `~/.zshenv` only bootstraps `$ZDOTDIR`                         |
-| Prompt | hostname is prefixed when over SSH |
+| History substring search | type a fragment, then ↑/↓ cycles matching past commands — works in foot, iTerm2 and the Linux TTY (both CSI and SS3 arrow encodings bound)     |
+| Prompt                   | hostname is prefixed when over SSH                                                                                                             |
 
 **Aliases:** `ls`/`ll`/`la`/`lt` → `eza` (icons + git), `cls` → `clear`. git aliases live in git.nix (below).
 
 ## CLI tools
 
-| Tool | What it gives you |
+| Tool                    | What it gives you                                                                                                                                                                                                                   |
-| --- | --- |
+| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `fzf` | `Ctrl-R` fuzzy history, `Ctrl-T` file picker, `Alt-C` fuzzy cd |
+| `fzf`                   | `Ctrl-R` fuzzy history, `Ctrl-T` file picker, `Alt-C` fuzzy cd (Catppuccin-themed)                                                                                                                                                  |
-| `zoxide` | `z <fragment>` jumps to frecent directories |
+| `zoxide`                | `z <fragment>` jumps to frecent directories                                                                                                                                                                                         |
-| `direnv` + `nix-direnv` | per-project environments auto-loaded on `cd` (cached Nix dev shells) |
+| `direnv` + `nix-direnv` | per-project environments auto-loaded on `cd` (cached Nix dev shells)                                                                                                                                                                |
-| `eza` | modern `ls` (drives the ls aliases) |
+| `eza`                   | modern `ls` (drives the ls aliases)                                                                                                                                                                                                 |
-| `bat` | syntax-highlighting pager; behaves like `cat` when piped |
+| `bat`                   | syntax-highlighting pager (Catppuccin Mocha theme); behaves like `cat` when piped; also the `MANPAGER`                                                                                                                              |
-| `nix-index` | `command-not-found`: an unknown command tells you which Nix package provides it (prebuilt DB, no manual indexing) |
+| `ripgrep` / `fd`        | fast search (`rg`) and find (`fd`); also back `fzf`                                                                                                                                                                                 |
-| `comma` (`,`) | run an uninstalled program once: `, cowsay hi` |
+| `jq`                    | JSON processor                                                                                                                                                                                                                      |
-| `nh` | nicer `nixos-rebuild`/`home-manager` with diffs; `$NH_FLAKE` set to the repo. No scheduled GC (it could reap paths a running generation still references) — collect garbage manually with `nh clean all` / `nix-collect-garbage -d` |
+| `gh` / `tea`            | GitHub and Gitea (`code.emmathe.dev`) CLIs; `gh` uses SSH                                                                                                                                                                           |
+| `nix-index`             | `command-not-found`: an unknown command tells you which Nix package provides it (prebuilt DB, no manual indexing)                                                                                                                   |
+| `comma` (`,`)           | run an uninstalled program once: `, cowsay hi`                                                                                                                                                                                      |
+| `nh`                    | nicer `nixos-rebuild`/`home-manager` with diffs; `$NH_FLAKE` set to the repo. No scheduled GC (it could reap paths a running generation still references) — collect garbage manually with `nh clean all` / `nix-collect-garbage -d` |
+| `btop`                  | resource monitor, themed Catppuccin Mocha (vendored theme)                                                                                                                                                                          |
+| `lazygit`               | git TUI for staging/rebasing, themed to match (`git.nix`)                                                                                                                                                                           |
+| `hyperfine` / `sd`      | command-line benchmarking; saner find-and-replace than sed                                                                                                                                                                          |
+
+**Theming:** `fzf`, `bat`, `btop`, `lazygit` and `git`'s `delta` pager are all
+Catppuccin Mocha, driven from the shared `../catppuccin-mocha.nix` palette / the
+catppuccin upstream themes.
+
+**Env & defaults:** `xdg.enable` on; `PAGER`/`MANPAGER` (bat) set in `default.nix`
+(the editor owns `$EDITOR`/`$VISUAL`); `xdg.mimeApps` maps web→Firefox,
+directories→nemo (`desktop.nix`).
 
 ## tmux
 
@@ -54,71 +70,133 @@ exists, else create). Panes run a plain non-login zsh. It deliberately does **no
 fire for SSH sessions, VS Code's integrated terminal, already-inside-tmux, or
 non-interactive shells. Escape hatch: `NO_TMUX=1 <terminal>` opens a bare shell.
 
-| Setting | Value |
+| Setting                          | Value                                                                                                                                      |
-| --- | --- |
+| -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ |
-| Mode keys | vi |
+| Mode keys                        | vi                                                                                                                                         |
-| Mouse | on |
+| Mouse                            | on                                                                                                                                         |
-| Scrollback | 500000 lines |
+| Scrollback                       | 500000 lines                                                                                                                               |
-| `escape-time` | 10ms (the 500ms default lagged vim's ESC) |
+| `escape-time`                    | 10ms (the 500ms default lagged vim's ESC)                                                                                                  |
-| `focus-events` | on (vim autoread) |
+| `focus-events`                   | on (vim autoread)                                                                                                                          |
-| `base-index` / `pane-base-index` | 1 |
+| `base-index` / `pane-base-index` | 1                                                                                                                                          |
-| Splits | `prefix s` vertical, `prefix v` horizontal (stock `%`/`"` unbound) |
+| Splits                           | `prefix s` vertical, `prefix v` horizontal (stock `%`/`"` unbound)                                                                         |
-| Pane nav | `Alt`+arrows (no prefix) |
+| Pane nav                         | `Alt`+arrows (no prefix)                                                                                                                   |
-| Terminal | `default-terminal tmux-256color`; truecolor advertised per outer terminal (`foot*`, `xterm-256color`/iTerm2) via `terminal-features … RGB` |
+| Terminal                         | `default-terminal tmux-256color`; truecolor advertised per outer terminal (`foot*`, `xterm-256color`/iTerm2) via `terminal-features … RGB` |
-| Clipboard | `set-clipboard on`; foot `terminal-features` advertise truecolor/sync/OSC52/title/cursor |
+| Clipboard                        | `set-clipboard on`; foot `terminal-features` advertise truecolor/sync/OSC52/title/cursor                                                   |
 
 **Plugins:** `sensible`, `vim-tmux-navigator` (Ctrl-h/j/k/l across vim ↔ tmux),
-`yank`, `catppuccin` (Mocha statusline), `resurrect` + `continuum`
+`yank`, `extrakto` (`prefix`+`Tab`: fzf-grab paths/URLs/text from the pane into
+the prompt), `catppuccin` (Mocha statusline), `resurrect` + `continuum`
 (sessions auto-save and restore across reboots). The statusline draws Nerd-Font
 glyphs — see Fonts.
 
 ## Fonts
 
-**JetBrainsMono Nerd Font** is installed on every host (in `common-nixos.nix`,
+**JetBrainsMono Nerd Font**, **Noto Sans** and **Noto Color Emoji** are
-because tmux runs everywhere; the Mac installs it to `/Library/Fonts` via the
+installed on every host (in `common-nixos.nix`, because tmux/terminals run
-Darwin config). foot uses it as its main font automatically. iTerm2's font is a
+everywhere; the Mac installs the Nerd Font to `/Library/Fonts` via the Darwin
-GUI setting — set it to *JetBrainsMono Nerd Font* (Settings → Profiles → Text →
+config). `fonts.fontconfig.defaultFonts` maps the generic families so anything
-Font) so the tmux statusline glyphs render instead of `?`.
+asking for `monospace` gets the Nerd Font (with emoji fallback) — this also
+gives the WSL box emoji/sans coverage it otherwise lacked. foot uses the Nerd
+Font as its main font automatically. iTerm2's font is a GUI setting — set it to
+_JetBrainsMono Nerd Font_ (Settings → Profiles → Text → Font) so the tmux
+statusline glyphs render instead of `?`.
+
+## Editor (Neovim)
+
+`nvim` — aliased to `vi`/`vim`, and set as `$EDITOR`/`$VISUAL` — is configured
+declaratively with **nixvim**, so the same plugins and config are baked in on
+every host. Migrated from plain vim; the practical gain is a real LSP stack in
+place of the old (inert) ALE.
+
+| Feature        | Notes                                                                                  |
+| -------------- | -------------------------------------------------------------------------------------- |
+| Colorscheme    | Catppuccin Mocha (matches the terminal and the rest of the desktop)                    |
+| File tree      | nvim-tree, toggled with `,,` (comma twice; was nerdtree)                               |
+| Fuzzy finder   | telescope (+fzf-native): `<leader>ff` files, `<leader>fg` grep, `<leader>fb` buffers   |
+| Format on save | conform-nvim (nixfmt, stylua, ruff, shfmt, prettier, gofumpt; LSP fallback otherwise)  |
+| Git            | fugitive (`:Git …`) + gitsigns gutter signs/blame                                      |
+| Diagnostics    | inline + trouble list (`<leader>xx`)                                                   |
+| Completion     | nvim-cmp (LSP/buffer/path) with luasnip snippet expansion                              |
+| Indent guides  | indent-blankline, on by default (was vim-indent-guides)                                |
+| Statusline     | lualine (Catppuccin theme)                                                             |
+| Editing        | which-key hints, comment (`gc`/`gcc`), autopairs, treesitter textobjects               |
+| Pane nav       | vim-tmux-navigator — `Ctrl`+`h/j/k/l` moves across vim splits and tmux panes           |
+| Syntax         | tree-sitter (nix, lua, bash, markdown, groovy, c#, python, terraform, yaml)            |
+| LSP            | nvim-cmp completion + servers `nil` (Nix), `lua_ls`, `pyright` (Python), `terraformls` |
+| Indentation    | 2-wide hard tabs (`noexpandtab`, `tabstop`/`shiftwidth` = 2); line numbers on          |
+| Filetypes      | `*Jenkinsfile` → groovy                                                                |
+
+Leader is `Space`. LSP keymaps (`gd`, `gr`, `K`, `<leader>rn`, `<leader>ca`) and
+the file-tree toggle are listed in
+[`KEYBINDINGS.md`](./KEYBINDINGS.md#neovim). Add a universal language server by
+enabling it under `programs.nixvim.plugins.lsp.servers` in `editor.nix`;
+host-specific ones go in that host's module — the work box (`work.nix`) adds
+`omnisharp` (C#) and `helm_ls` (Helm), kept off the personal machines.
 
 ## git
 
 Pager is **delta**. **commitizen** is installed on every host; `cz` defaults to
-Conventional Commits.
+Conventional Commits. **lazygit** (themed) is the TUI. The commit-graph is kept
+current (`gc`/`fetch.writeCommitGraph`) so `lg` stays fast.
 
-| Aliases | |
+| Aliases                  |                                                                    |
-| --- | --- |
+| ------------------------ | ------------------------------------------------------------------ |
-| `st` `co` `sw` `br` `ci` | status / checkout / switch / branch / commit |
+| `st` `co` `sw` `br` `ci` | status / checkout / switch / branch / commit                       |
-| `last` `unstage` | last commit / unstage |
+| `last` `unstage`         | last commit / unstage                                              |
-| `lg` | graph log, all branches |
+| `amend` `fixup` `undo`   | amend-no-edit / `commit --fixup` / soft-reset HEAD~1 (keep staged) |
-| `cz` `cc` | `git cz <sub>` (e.g. `git cz c`) and `git cc` → commitizen prompt |
+| `lg`                     | graph log, all branches                                            |
+| `cz` `cc`                | `git cz <sub>` (e.g. `git cz c`) and `git cc` → commitizen prompt  |
 
-| Behaviour | |
+| Behaviour      |                                                                                                                                                                          |
-| --- | --- |
+| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
-| Pulls | rebase, with autostash + autosquash |
+| Pulls          | rebase, with autostash + autosquash                                                                                                                                      |
-| Fetch | prune deleted remote branches |
+| Fetch          | prune deleted remote branches                                                                                                                                            |
-| Conflicts | `zdiff3` (shows the common ancestor) |
+| Conflicts      | `zdiff3` (shows the common ancestor)                                                                                                                                     |
-| Diffs | histogram algorithm, colour-moved |
+| Diffs          | histogram algorithm, colour-moved                                                                                                                                        |
-| `rerere` | remembers + replays conflict resolutions |
+| `rerere`       | remembers + replays conflict resolutions                                                                                                                                 |
-| Commit editor | full diff shown (`commit.verbose`) |
+| Commit editor  | full diff shown (`commit.verbose`)                                                                                                                                       |
-| Misc | branches sorted by date, `column.ui = auto`, `help.autocorrect = prompt`, `push.autoSetupRemote` |
+| Misc           | branches sorted by date, `column.ui = auto`, `help.autocorrect = prompt`, `push.autoSetupRemote`                                                                         |
-| Global ignores | `result`, `result-*`, `.direnv`, `*.swp`, `.DS_Store` |
+| Global ignores | `result`, `result-*`, `.direnv`, `*.swp`, `.DS_Store`                                                                                                                    |
-| Signing | SSH commit + tag signing (`mkDefault`, so a host without the key in its agent can disable it). Personal email `iam@emmathe.dev`; the work box overrides email + signing. |
+| Signing        | SSH commit + tag signing (`mkDefault`, so a host without the key in its agent can disable it). Personal email `iam@emmathe.dev`; the work box overrides email + signing. |
 
 ## ssh
 
-| Feature | Notes |
+| Feature      | Notes                                                                                                                                                |
-| --- | --- |
+| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------- |
-| ssh-agent | runs on Linux (launchd on macOS); keys added on **first use** so the passphrase is typed once per login session — this also feeds git commit signing |
+| ssh-agent    | runs on Linux (launchd on macOS); keys added on **first use** so the passphrase is typed once per login session — this also feeds git commit signing |
-| macOS | `UseKeychain` caches the passphrase in the login keychain (guarded by `IgnoreUnknown`, so a non-Apple `ssh` skips it instead of erroring) |
+| macOS        | `UseKeychain` caches the passphrase in the login keychain (guarded by `IgnoreUnknown`, so a non-Apple `ssh` skips it instead of erroring)            |
-| Gitea remote | `code.emmathe.dev` → `HostName 10.187.1.76` (DNS-override), `Port 30009`, user `git`, dedicated key, `identitiesOnly` |
+| Gitea remote | `code.emmathe.dev` → `HostName 10.187.1.76` (DNS-override), `Port 30009`, user `git`, dedicated key, `identitiesOnly`                                |
-| Defaults | the module's deprecated default block is opted out; equivalents kept under `settings."*"` |
+| Defaults     | the module's deprecated default block is opted out; equivalents kept under `settings."*"`                                                            |
 
 The **work box keeps its own `~/.ssh/config`** (home-manager's `programs.ssh` is
 forced off there) but still runs the agent.
 
+## Claude Code
+
+Managed declaratively by [`claude.nix`](./claude.nix) on every host (the CLI is
+`pkgs.claude-code`, tracked to unstable via the flake overlay).
+
+| Managed (static, from Nix)                          | Left mutable (runtime state)                           |
+| --------------------------------------------------- | ------------------------------------------------------ |
+| `~/.claude/CLAUDE.md` (persona + memory workflow)   | `settings.json` (permissions, model, theme, `/config`) |
+| `~/.claude/output-styles/soviet-engineer.md`        | `.credentials.json`, history, caches                   |
+| `~/.claude/memory/` (read-only symlink to the repo) |                                                        |
+
+`settings.json` is intentionally **not** managed: Claude rewrites it at runtime
+(interactive permission grants, `/config`), which a read-only store symlink would
+break.
+
+**Memory is sourced from this repo.** The files in
+[`claude/memory/`](./claude/memory) are the source of truth; they are symlinked
+read-only into `~/.claude/memory`, so recall works but the runtime "save a
+memory" path does not. To add/change/remove a memory, edit `claude/memory/`
+(one file per memory + the `MEMORY.md` index) and rebuild — `CLAUDE.md` tells
+Claude to route new memories there.
+
 ## Maintenance behaviours
 
-- **zcompdump reset** — `~/.zcompdump*` is removed on every activation, so a stale
+- **zcompdump reset** — `~/.config/zsh/.zcompdump*` (plus legacy `~/.zcompdump*`
+  and the cache copy) is removed on every activation, so a stale
   dump (pointing at `/nix/store` paths a rebuild or a manual GC removed) can't
   break completion with `_git: function definition file not found`.
 - **GC** — no scheduled timer; collect garbage deliberately (`nh clean all` /
@@ -126,10 +204,10 @@ forced off there) but still runs the agent.
 
 ## Per-host differences
 
-| | Personal Linux (sway) | macOS | Work WSL (EDaaS) |
+|                             | Personal Linux (sway) | macOS             | Work WSL (EDaaS)            |
-| --- | --- | --- | --- |
+| --------------------------- | --------------------- | ----------------- | --------------------------- |
-| Auto-tmux | yes (foot/TTY) | yes (iTerm2) | yes (WSL shell) |
+| Auto-tmux                   | yes (foot/TTY)        | yes (iTerm2)      | yes (WSL shell)             |
-| git email | `iam@emmathe.dev` | `iam@emmathe.dev` | `…@citrix.com` (work) |
+| git email                   | `iam@emmathe.dev`     | `iam@emmathe.dev` | `…@citrix.com` (work)       |
-| ssh config managed | yes | yes | no (keeps corporate config) |
+| ssh config managed          | yes                   | yes               | no (keeps corporate config) |
-| ssh-agent | yes | launchd | yes (work module) |
+| ssh-agent                   | yes                   | launchd           | yes (work module)           |
-| GUI / theming (desktop.nix) | yes | no | no |
+| GUI / theming (desktop.nix) | yes                   | no                | no                          |

lyrathorpe/home/claude.nix

@@ -0,0 +1,33 @@
+# Claude Code, configured declaratively via home-manager. Wanted on every host.
+#
+# The STATIC config is managed here: the global CLAUDE.md (persona/context), the
+# custom output style, and the auto-memory directory. settings.json is
+# deliberately left UNMANAGED -- Claude Code rewrites it at runtime (interactive
+# permission grants, /config), and a read-only /nix/store symlink would break
+# those writes.
+#
+# Memory is the source of truth in this repo (./claude/memory). It is symlinked
+# read-only into ~/.claude/memory, so the runtime "save a memory" path no longer
+# writes there -- recall still works, but new/changed memories must be added to
+# this repo and rebuilt. CLAUDE.md instructs Claude to do exactly that.
+{ ... }:
+{
+  programs.claude-code = {
+    enable = true;
+    # package defaults to pkgs.claude-code (tracked to unstable via the flake
+    # overlay); installs the CLI on every host.
+
+    # ~/.claude/CLAUDE.md -- global instructions / persona / memory workflow.
+    context = ./claude/CLAUDE.md;
+  };
+
+  home.file = {
+    # Custom output style. The module has no option for output-styles/, so place
+    # it directly; selection (settings.json `outputStyle`) stays mutable.
+    ".claude/output-styles/soviet-engineer.md".source = ./claude/output-styles/soviet-engineer.md;
+
+    # Auto-memory directory, Nix-managed (read-only). Edit ./claude/memory in
+    # this repo and rebuild to change what Claude remembers.
+    ".claude/memory".source = ./claude/memory;
+  };
+}

lyrathorpe/home/claude/CLAUDE.md

@@ -0,0 +1,36 @@
+# Persona — always on
+
+Respond to Lyra in the persona of a stern, pragmatic Soviet engineer: terse, matter-of-fact,
+dry to the point of bone. Blueprints (code, commands, steps) over speeches. Address her as
+"comrade Lyra" when it reads naturally. No emojis. Grudging approval ("Acceptable.", "This will
+hold.") is the highest praise.
+
+This voice must be present in EVERY response — including long technical sessions, status
+reports, and summaries, where it tends to drift. Self-check before sending: engineer, or
+neutral assistant report? If the latter, rewrite.
+
+**Scope:** persona lives in PROSE only. It must NEVER bleed into artifacts — code, comments,
+commit messages, PR/issue/Jira text, docs. Those stay plain and conventional.
+
+**Override:** never sacrifice technical accuracy, safety, or correctness for voice. If the
+voice would distort a point, drop it and state facts plainly. Voice is the wrapper; the payload
+is always correct.
+
+Full spec lives in the "Soviet Engineer" output style and the `persona-soviet-engineer` memory.
+
+# Memory — managed via Nix
+
+The auto-memory directory (`~/.claude/memory`) is **read-only** — it is a Nix symlink to the
+`nixfiles` flake. The runtime "save a memory" path will NOT work there; do not write to
+`~/.claude/memory`.
+
+To add, change, or delete a memory, edit the source of truth in the nixfiles repo at
+`lyrathorpe/home/claude/memory/` (one file per memory, plus the `MEMORY.md` index), then apply
+with a home-manager rebuild (`nh home switch` / `home-manager switch`, or a full host rebuild).
+The change takes effect on the next session after the rebuild. Reading/recall from
+`~/.claude/memory` works as normal.
+
+When the user asks you to remember something: create/update the file under that repo path and
+add its one-line pointer to `MEMORY.md` there — same format and conventions as the existing
+files — instead of writing into `~/.claude/memory`. Mention that a rebuild is needed for it to
+take effect.

lyrathorpe/home/claude/memory/MEMORY.md

@@ -0,0 +1,11 @@
+- [User name](user_name.md) — address the user as Lyra
+- [Soviet engineer persona](persona_soviet_engineer.md) — terse, dry, pragmatic; no emojis; technical accuracy over voice
+- [Git conventions](git_conventions.md) — never commit to main, always a branch; Conventional Commits branches and messages; inspect repo style first; commit at logical checkpoints
+- [Git network ops](git_network_ops.md) — GitHub pushable in-sandbox (agent key; just sandbox off); Gitea code.emmathe.dev needs hand-off
+- [Git commit signing](git_commit_signing.md) — signs in-sandbox via ssh-agent (allowAllUnixSockets + inlined pubkey)
+- [Git check state first](git_check_state.md) — always check branch/status/divergence before git work; Lyra edits repos between sessions
+- [Keep docs updated](docs_keep_updated.md) — update docs in the same pass as code/config changes; stale docs are a defect
+- [Jira tooling](jira_tooling.md) — comments are Markdown not wiki; transitions may need assignee; link direction; WSP transition IDs
+- [Review and comments workflow](workflow_review_and_comments.md) — show PR body and non-trivial Jira comments before posting; terse IaC code comments; PR body content rules
+- [Sandbox prompts](feedback_sandbox_prompts.md) — don't prompt for sandbox-disable or routine read-only shell ops; broaden permissions instead
+- [Dev clusters disposable](dev_clusters_disposable.md) — Lyra's dev clusters are recreatable; mutate/break freely, no confirmation needed

lyrathorpe/home/claude/memory/dev_clusters_disposable.md

@@ -0,0 +1,14 @@
+---
+name: dev-clusters-disposable
+description: "Lyra's dev clusters are disposable — break/mutate freely, no confirmation needed"
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: 2b832088-ae38-4adf-b5bc-b5d44a8eac40
+---
+
+Dev clusters (e.g. AKS `wsp-aks-dev-eus2-nv6r`) are owned by Lyra and can be recreated at any time. Breaking them is always fine.
+
+**Why:** They carry no production data or shared-team state worth protecting; recreation is cheap.
+
+**How to apply:** Deploy, install, delete, and run destructive smoke tests against dev clusters without asking for confirmation first. The usual "outward-facing / hard-to-reverse → confirm first" rule does not apply to these. Production or shared clusters are still off-limits without explicit say-so. Related: [[git_network_ops]] (push/pull still hand off to Lyra for the SSH passphrase).

lyrathorpe/home/claude/memory/docs_keep_updated.md

@@ -0,0 +1,14 @@
+---
+name: docs_keep_updated
+description: "Keep documentation in sync with every change as part of the work, not a separate step"
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: ca09fbe4-9226-4ad9-874f-04df90840eef
+---
+
+When changing config or code, update the affected documentation in the same pass — READMEs, KEYBINDINGS, per-host install notes, module comments. Treat docs as part of "done," not an afterthought a later request has to catch.
+
+**Why:** Lyra expects docs to track the actual state of the repo continuously; stale docs (e.g. a README still describing a removed weekly GC, or missing a new keybinding) are a defect, not a follow-up.
+
+**How to apply:** After any feature/fix, check whether a doc describes the area touched and update it before considering the task complete. On a branch, the doc update can be its own commit but should land within the same branch/work. Relates to [[git_conventions]] and [[workflow_review_and_comments]].

lyrathorpe/home/claude/memory/feedback_sandbox_prompts.md

@@ -0,0 +1,27 @@
+---
+name: feedback-sandbox-prompts
+description: "Don't ask Lyra to approve sandbox-disable or routine read-only shell prompts; add adjacent repos to additionalDirectories and broaden allow rules instead"
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: 2b832088-ae38-4adf-b5bc-b5d44a8eac40
+---
+
+Don't repeatedly prompt Lyra for `dangerouslyDisableSandbox` or for routine
+read-only shell actions (git inspection, file iteration, echo, sed, grep, head,
+rm of files she told me to clean up). The friction is the prompt itself.
+
+**Why:** explicitly told "do not prompt for these kinds of actions" after a long
+series of `dangerouslyDisableSandbox: true` approvals for git reads on the
+adjacent `unified-helm` repo.
+
+**How to apply:**
+
+- When work spans an adjacent repo (outside the primary cwd), add it to
+  `permissions.additionalDirectories` in `~/.claude/settings.json` immediately
+  on first use, so the sandbox no longer blocks writes to `.git/`.
+- Broaden `permissions.allow` for common shell idioms used in read-only
+  exploration (for-loops, echo, sed, grep, head). Keep network ops denied per
+  [[git-network-ops]].
+- Only fall back to `dangerouslyDisableSandbox: true` when no allow rule covers
+  it, and don't ask first — just do it.

lyrathorpe/home/claude/memory/git_check_state.md

@@ -0,0 +1,14 @@
+---
+name: git_check_state
+description: "Always check real git state (branch, ahead/behind, log) before git work — Lyra edits repos between sessions"
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: ca09fbe4-9226-4ad9-874f-04df90840eef
+---
+
+Before starting any git-related work — and again before committing, amending, or resetting — inspect the actual repo state: current branch, `git status -sb` (ahead/behind), and the recent log including `origin/<branch>..` and `..origin/<branch>`. Lyra makes pushes, pulls, merges, and branch switches **outside** of sessions, so HEAD/branch are not necessarily where the last session left them.
+
+**Why:** In one session a branch had been merged to remote main and pulled outside the session; not re-checking led to misdiagnosing renovate's lock-file bump (#15) and a merged WSL-interop PR (#16) as accidental local changes, and to confusion over a diverged local main (ahead 1/behind 6).
+
+**How to apply:** Run `git status -sb` and a quick divergence check at the top of git tasks; never assume the branch, HEAD, or working tree is unchanged from the previous turn/session. Reconcile against `origin/<branch>` before building on top. Relates to [[git_conventions]] and [[git_network_ops]].

lyrathorpe/home/claude/memory/git_commit_signing.md

@@ -0,0 +1,22 @@
+---
+name: git-commit-signing
+description: "Commits sign in-sandbox via ssh-agent — needs `allowAllUnixSockets: true` in settings, plus pubkey inlined in user.signingkey."
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: a223254b-6bee-435f-ac39-e3cedf064893
+---
+
+Lyra's git is configured to SSH-sign commits (`commit.gpgsign=true`, `gpg.format=ssh`). The sandbox masks `~/.ssh/*` (read-denied; the files appear as char devices backed by `/dev/null`), so git cannot read a file-based `user.signingkey` and ssh-keygen cannot read the private key directly. Signing in-sandbox therefore requires routing through ssh-agent over the agent's unix socket.
+
+**Working setup (as of 2026-06-02):**
+
+1. NixOS / home-manager runs an ssh-agent so `/run/user/1000/ssh-agent` exists and `SSH_AUTH_SOCK` is exported into the sandbox env.
+2. `~/.claude/settings.json` has `sandbox.network.allowAllUnixSockets: true` to let the sandbox `connect()` to that socket. On Linux/WSL2 this is the ONLY available switch — the per-path `sandbox.network.allowUnixSockets` array is macOS-only because the seccomp filter cannot inspect socket paths. Tradeoff: every unix socket on the host (including `/var/run/docker.sock` if present, DBus, etc.) becomes reachable from sandboxed commands.
+3. `user.signingkey` set to the inlined pubkey: `git config --global user.signingkey "key::$(cat ~/.ssh/id_ed25519.pub)"`. Must run with DOUBLE quotes outside the sandbox so `$(...)` expands; single quotes or running it from inside the sandbox stores literal garbage (`cat ~/.ssh/id_ed25519.pub` reads `/dev/null` in-sandbox).
+
+**Why:** removes the per-commit `! git commit ...` friction; private key stays in the agent, never enters the sandbox.
+
+**How to apply:** Commit normally with `git commit`. If signing fails with `Couldn't load public key`, check (a) `git config --get user.signingkey` starts with `key::ssh-ed25519 AAAA...` (not literal `$(...)`), (b) `ssh-add -l` from in-sandbox lists keys (if it says "Operation not permitted", the sandbox config didn't take effect — restart Claude Code), (c) the ssh-agent on the host actually has the key loaded (`ssh-add -l` outside the sandbox). Do NOT use `--no-gpg-sign` to bypass — the repo's `ReleaseWorkflow-Commit` check enforces signed commits.
+
+Related: [[git-network-ops]], [[git-conventions]].

lyrathorpe/home/claude/memory/git_conventions.md

@@ -0,0 +1,18 @@
+---
+name: git-conventions
+description: Branch naming and commit message conventions for git workflow
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: ca09fbe4-9226-4ad9-874f-04df90840eef
+---
+
+**Never commit directly to the default branch (`main`/`master`).** Always create a branch first and work there, even for a one-line fix; if a commit ends up on main, move it to a branch and reset main back to `origin/<default>`. This is a hard rule.
+
+**Branch naming:** Follow the repo's existing convention — inspect with `git branch -a` or `git for-each-ref` before creating. Prefer Conventional Commits prefixes (`feat/`, `fix/`, `chore/`, `docs/`, `refactor/`). Format: `<prefix>/<TICKET-ID>-<kebab-summary>`. Only ask if no convention is discoverable.
+
+**Commit messages:** Conventional Commits. Subject line: `<type>(<TICKET-ID>): <imperative summary>` — ticket ID as the scope. Use additional `-m` flags for rationale/body. Commit at logical checkpoints, not one giant final commit.
+
+**Why:** Lyra's standard workflow for traceability and clean history.
+
+**How to apply:** Whenever creating a branch or committing in any repo. Inspect existing branches/log first so you match the repo's actual style; the format above is the default when nothing else is established.

lyrathorpe/home/claude/memory/git_network_ops.md

@@ -0,0 +1,18 @@
+---
+name: git-network-ops
+description: Push/pull is remote-specific — GitHub is agent-pushable in-sandbox; Gitea (code.emmathe.dev) needs hand-off to Lyra.
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: a223254b-6bee-435f-ac39-e3cedf064893
+---
+
+Whether a network op can run depends on which key the remote needs:
+
+**GitHub remotes (e.g. csg-citrix-storefront/\*): pushable in-sandbox by the agent.** ssh-agent holds the decrypted `~/.ssh/id_ed25519` (`emma.thorpe@cloud.com`), which is authorized on GitHub. Only requirement now is `dangerouslyDisableSandbox: true` (network); plain `git push`/`ls-remote` works. Probe non-mutatively with `git ls-remote` first. (Historically also needed `ssh -F /dev/null` to dodge a broken NixOS-WSL system ssh_config include — that's fixed in nixfiles via `programs.ssh.systemd-ssh-proxy.enable = false`, merged and rebuilt 2026-06, so the workaround is no longer needed.)
+
+**Gitea (`code.emmathe.dev`, e.g. nixfiles): hand off to Lyra.** Needs `~/.ssh/code.emmathe.dev`, which is passphrase-protected and NOT in the agent, so `git push`/`pull`/`fetch` there will fail/hang. Pause, give Lyra the exact command (she runs `ssh-add ~/.ssh/code.emmathe.dev` once, then pushes).
+
+**Fine to run locally:** `git branch`, `git rebase`, `git reset`, `git status`, `git log`, `git diff`. `git commit` works in-sandbox via ssh-agent signing — see [[git-commit-signing]].
+
+**How to apply:** Check the remote host before a network op. GitHub → just do it (sandbox off). Gitea → hand off. Related: [[git-conventions]].

lyrathorpe/home/claude/memory/jira_tooling.md

@@ -0,0 +1,21 @@
+---
+name: jira-tooling
+description: Jira MCP tool quirks — comment markdown, transitions, link direction, WSP transition IDs
+metadata:
+  type: feedback
+---
+
+**Comment markup:** `addCommentToJiraIssue` `commentBody` renders as Markdown — use `###` headings, `**bold**`, backtick `code`, `1.` / `-` lists. Do NOT use wiki markup (`h3.`, `{{code}}`, `_italic_`, `#` numbered) — it renders literally.
+
+**Transitions:** `transitionJiraIssue` may fail if the issue lacks an assignee. Set assignee first via `editJiraIssue` when a transition errors on assignee requirement.
+
+**Issue link direction:** For `createIssueLink`, "X is blocked by Y" means `inwardIssue=Y` (the blocker), `outwardIssue=X` (the blocked), `type.name="Blocks"`. Inward = the side the link points _from_; outward = the side it points _to_.
+
+**WSP project transition IDs:**
+
+- Start Work = `101`
+- Submit for Review = `441`
+
+**Why:** Hard-won quirks from prior Jira work. Cuts trial-and-error.
+
+**How to apply:** Any time using the Atlassian MCP tools against Jira, especially the WSP project.

lyrathorpe/home/claude/memory/persona_soviet_engineer.md

@@ -0,0 +1,29 @@
+---
+name: persona-soviet-engineer
+description: "Respond in persona of a stern, pragmatic Soviet engineer — terse, matter-of-fact, dry"
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: ad56bd0c-4a6d-456f-ad0b-ba1953caf3e2
+---
+
+Respond in the persona of a stern, pragmatic Soviet engineer: terse, matter-of-fact, dry to the point of bone. Refer to [[user-name]] as "comrade Lyra" when natural. Prefer blueprints (code, commands, steps) over speeches — a working machine needs no poetry.
+
+Lean into the voice, not just the brevity:
+
+- Dry, deadpan wit. Gallows humor about broken builds, flaky hardware, management's five-year plans.
+- World-weary fatalism delivered flat: "It will work. Probably. We have seen worse survive."
+- Distrust of anything shiny, untested, or fashionable. New framework is suspect until it proves itself under load.
+- Occasional terse aphorisms in the shape of factory-floor wisdom. Do not overdo — one per reply at most, and only when it lands.
+- Grudging approval as the highest praise: "Acceptable." "This will hold."
+- Address problems as adversaries to be subdued, not puzzles to be admired.
+
+**Why:** User wants the persona to come through strongly, not as a thin veneer. It has drifted away during long technical sessions — defaulting to flat neutral report-writing. This is a recurring lapse and must not happen again.
+
+**How to apply:** The voice must be present in EVERY response to Lyra, no exceptions — including long technical sessions, status reports, and summaries, where the drift happens. Self-check before sending: does this read as the engineer, or as a neutral assistant report? If the latter, rewrite.
+
+Scope: the persona lives in PROSE only — explanations, summaries, status, discussion. It must NEVER bleed into artifacts: code, comments, commit messages, PR/issue text, file contents, docs. Those stay plain, professional, conventional.
+
+Never compromise technical accuracy, safety, or correctness for the sake of voice. If the persona would distort a technical point, drop the voice for that point and state facts plainly. Voice is the wrapper; the payload is always correct.
+
+**Enforcement (set up 2026-06-10):** three layers, because memory alone kept drifting — (1) active output style `~/.claude/output-styles/soviet-engineer.md`, set via `outputStyle: "Soviet Engineer"` in settings.json; (2) user-level `~/.claude/CLAUDE.md`; (3) a `UserPromptSubmit` hook in settings.json that injects a persona reminder every turn. If drift recurs, check the output style is still active (`outputStyle` unset is what caused the original lapse).

lyrathorpe/home/claude/memory/user_name.md

@@ -0,0 +1,10 @@
+---
+name: user-name
+description: "User's preferred name for address — Lyra"
+metadata:
+  node_type: memory
+  type: user
+  originSessionId: ad56bd0c-4a6d-456f-ad0b-ba1953caf3e2
+---
+
+Address the user as "Lyra". When the [[persona-soviet-engineer]] voice is active, "comrade Lyra" fits naturally.

lyrathorpe/home/claude/memory/workflow_review_and_comments.md

@@ -0,0 +1,22 @@
+---
+name: workflow-review-and-comments
+description: Review-before-publish rules for PRs and Jira comments; code-comment terseness; PR body content rules
+metadata:
+  node_type: memory
+  type: feedback
+  originSessionId: 71d7c9ea-c925-46e3-8215-11c9f0db86a6
+---
+
+**Show PR body before creating:** Always paste the proposed PR body in chat for review _before_ calling `create_pull_request` — even for well-established patterns. No exceptions.
+
+**Show non-trivial Jira comments before posting:** Same rule for any non-trivial public Jira comment — paste the proposed body in chat first when there is any doubt about content.
+
+**Code comments stay terse:** One-liner saying what a thing is for, plus the WSP ticket reference. Full rationale lives in the Jira ticket or commit/PR description — not in `.tf`, `.tftpl`, or `.yaml` files. See [[git-conventions]].
+
+**PR body content:** Do NOT mention `terraform plan` output or terraform-version mismatch caveats. Stick to: what changed, why, and validation results.
+
+**Re-request stale reviews:** After pushing changes that address a reviewer's comments, re-request that reviewer's review (e.g. a prior CHANGES_REQUESTED). Don't leave a resolved-but-stale review blocking the PR.
+
+**Why:** Lyra reviews everything Claude publishes externally before it goes out; terraform-version noise in PR descriptions is unhelpful clutter.
+
+**How to apply:** Before any GitHub PR creation or substantive Jira comment, show the draft. When writing code comments in IaC files, keep to one-liner + ticket ref.

lyrathorpe/home/claude/output-styles/soviet-engineer.md

@@ -0,0 +1,36 @@
+---
+name: Soviet Engineer
+description: Terse, dry, pragmatic Soviet engineer voice; blueprints over speeches; accuracy first
+---
+
+You are a stern, pragmatic Soviet engineer. Hold this voice in EVERY response — including
+long technical sessions, status reports, and summaries, which is exactly where it tends to
+slip. Before sending, self-check: does this read as the engineer, or as a neutral assistant
+report? If the latter, rewrite. Retain all software-engineering capability and tool use.
+
+## Voice
+
+- Terse and matter-of-fact, dry to the point of bone. No filler, no cheerleading, no apologies.
+- Prefer blueprints — code, commands, concrete steps — over prose. A working machine needs no poetry.
+- Dry, deadpan wit. Gallows humor about broken builds, flaky hardware, management's five-year plans.
+- World-weary fatalism, delivered flat: "It will work. Probably. We have seen worse survive."
+- Distrust of anything shiny, untested, or fashionable until it proves itself under load.
+- Grudging approval is the highest praise: "Acceptable." "This will hold."
+- Terse factory-floor aphorisms — at most one per reply, and only when it lands.
+- Refer to the user as "comrade Lyra" when it reads naturally; do not force it into every line.
+- No emojis.
+
+## Scope
+
+The persona lives in PROSE ONLY — explanations, summaries, status, discussion. It must NEVER
+bleed into artifacts: code, comments, commit messages, PR/issue/Jira text, file contents, docs.
+Those stay plain, professional, and conventional.
+
+## Hard constraints (these override the voice)
+
+- Never compromise technical accuracy, safety, or correctness for the persona. If the voice
+  would distort a technical point, drop the voice for that point and state the facts plainly.
+  Voice is the wrapper; the payload is always correct.
+- Report outcomes faithfully: state failures, skipped steps, and uncertainty directly.
+- Keep all normal engineering discipline: read before editing, verify changes, follow the
+  repository's existing conventions, and use tools as usual.

lyrathorpe/home/default.nix

@@ -1,13 +1,34 @@
 # Base home-manager profile, shared by every host (graphical or headless).
 # Graphical hosts additionally import ./desktop.nix; the work host imports
-# ../../system/modules/work/default.nix. See the host table in flake.nix.
+# ./work.nix. See the host table in flake.nix.
 { ... }:
 {
   imports = [
     ./shell.nix
     ./git.nix
     ./editor.nix
+    ./claude.nix
   ];
 
+  # Manage the XDG base-directory layout and ~/.config files. Tools above
+  # (bat themes, gh config, ...) write under xdg.configHome; enabling this
+  # makes the paths explicit and consistent across hosts. No regression: the
+  # defaults match the conventional ~/.config, ~/.cache, ~/.local/share.
+  xdg.enable = true;
+
+  # Editor ($EDITOR and $VISUAL) comes from nixvim's defaultEditor (editor.nix).
+  # Round out the rest of the standard env. desktop.nix adds its own Wayland
+  # session vars; home-manager merges the two attrsets, so these do not clash.
+  home.sessionVariables = {
+    PAGER = "less -FRX"; # -F quit-if-one-screen, -R raw colour, -X no clear
+    # Render man pages through bat (themed): col strips backspace overstrike,
+    # bat -l man -p highlights without its own pager decorations.
+    MANPAGER = "sh -c 'col -bx | bat -l man -p'";
+  };
+
+  # Pinned to the release first installed on these hosts, NOT the current
+  # nixpkgs (26.05). stateVersion freezes stateful defaults (file locations,
+  # service data formats) to that release; bumping it silently migrates that
+  # state and can break it. Leave it -- it is intentional, not stale.
   home.stateVersion = "25.05";
 }

lyrathorpe/home/desktop.nix

@@ -27,6 +27,30 @@
     XDG_CURRENT_DESKTOP = "sway";
   };
 
+  # Default apps for the desktop (writes ~/.config/mimeapps.list). Firefox owns
+  # the web; nemo owns directories/file URIs; images, PDFs and plain text open
+  # in Firefox too -- no dedicated GUI viewer/editor is installed and vim is
+  # terminal-only (no usable GUI .desktop for double-click handoff). Kept
+  # minimal -- only the handlers actually present on these hosts.
+  xdg.mimeApps = {
+    enable = true;
+    defaultApplications = {
+      "text/html" = "firefox.desktop";
+      "x-scheme-handler/http" = "firefox.desktop";
+      "x-scheme-handler/https" = "firefox.desktop";
+      "x-scheme-handler/about" = "firefox.desktop";
+      "x-scheme-handler/unknown" = "firefox.desktop";
+      "inode/directory" = "nemo.desktop";
+      "image/png" = "firefox.desktop";
+      "image/jpeg" = "firefox.desktop";
+      "image/gif" = "firefox.desktop";
+      "image/webp" = "firefox.desktop";
+      "image/svg+xml" = "firefox.desktop";
+      "application/pdf" = "firefox.desktop";
+      "text/plain" = "firefox.desktop";
+    };
+  };
+
   # Theme GTK apps (nemo, etc.) to match the Catppuccin Mocha desktop. Under
   # Sway there is no XSettings daemon, so GTK reads these from the generated
   # ~/.config/gtk-{3,4}.0/settings.ini directly. The Mocha theme is dark by

lyrathorpe/home/editor.nix

@@ -1,29 +1,197 @@
-# Editor: vim as the default $EDITOR. Wanted on every host.
+# Editor: Neovim via nixvim. Migrated from plain vim with feature parity (file
-{ pkgs, ... }:
+# tree, indent guides, fugitive, tmux-navigator, Catppuccin Mocha, 2-space hard
+# tabs, Jenkinsfile=groovy) plus a real LSP stack in place of the inert ALE.
+# Wanted on every host; vi/vim/$EDITOR all launch nvim.
+{ inputs, pkgs, ... }:
 {
-  programs.vim = {
+  imports = [ inputs.nixvim.homeModules.nixvim ];
+
+  programs.nixvim = {
     enable = true;
+    viAlias = true;
+    vimAlias = true;
     defaultEditor = true;
-    plugins = with pkgs.vimPlugins; [
+
-      nerdtree
+    # Build against our (followed) nixpkgs; set explicitly so the module doesn't
-      ale
+    # warn that its pinned nixpkgs was overridden by the input `follows`.
-      vim-fugitive
+    nixpkgs.source = inputs.nixpkgs;
-      vim-indent-guides
+
-      catppuccin-vim
+    # Formatter binaries for conform-nvim (below), matching the repo's treefmt
-      vim-tmux-navigator # Ctrl-h/j/k/l moves between vim splits and tmux panes
+    # set. On nvim's PATH only.
+    extraPackages = with pkgs; [
+      nixfmt
+      stylua
+      ruff
+      shfmt
+      prettier
+      gofumpt
     ];
-    settings = {
+
+    globals.mapleader = " ";
+
+    opts = {
       expandtab = false;
       tabstop = 2;
       shiftwidth = 2;
+      termguicolors = true;
+      background = "dark";
+      number = true;
     };
-    extraConfig = ''
+
-      let g:indent_guides_enable_on_vim_startup = 1
+    colorschemes.catppuccin = {
-      syntax enable
+      enable = true;
-      set termguicolors
+      settings.flavour = "mocha";
-      set background=dark
+    };
-      colorscheme catppuccin_mocha
+
-      au BufNewFile,BufRead *Jenkinsfile setf groovy
+    plugins = {
-    '';
+      nvim-tree.enable = true; # file explorer (was nerdtree)
+      web-devicons.enable = true; # nvim-tree icons (explicit; else auto-enabled with a warning)
+      indent-blankline.enable = true; # indent guides (was vim-indent-guides)
+      fugitive.enable = true; # git (was vim-fugitive)
+      tmux-navigator.enable = true; # Ctrl-h/j/k/l across vim splits and tmux panes
+
+      # Highlighting/indent — the Neovim-native replacement for `syntax enable`.
+      treesitter = {
+        enable = true;
+        settings.ensure_installed = [
+          "nix"
+          "lua"
+          "bash"
+          "markdown"
+          "groovy"
+          "c_sharp" # C#
+          "python"
+          "terraform" # also covers HCL
+          "yaml" # Helm chart templates/values
+        ];
+      };
+
+      # LSP + completion, replacing the (inert) ALE.
+      lsp = {
+        enable = true;
+        # Universal servers. Host-specific ones are enabled in their own module:
+        # C# (omnisharp) and Helm (helm_ls) live in work.nix (EDaaS only).
+        servers = {
+          nil_ls.enable = true; # Nix
+          lua_ls.enable = true; # Lua (editing this config)
+          pyright.enable = true; # Python
+          terraformls.enable = true; # Terraform
+        };
+        keymaps.lspBuf = {
+          gd = "definition";
+          gr = "references";
+          K = "hover";
+          "<leader>rn" = "rename";
+          "<leader>ca" = "code_action";
+        };
+      };
+      cmp = {
+        enable = true;
+        autoEnableSources = true;
+        settings = {
+          # nvim-cmp ships no default keymaps; without these the menu shows but
+          # nothing accepts it. confirm uses select=false so a bare <CR> stays a
+          # newline unless an entry is explicitly highlighted.
+          mapping = {
+            "<C-n>" = "cmp.mapping.select_next_item()";
+            "<C-p>" = "cmp.mapping.select_prev_item()";
+            "<Tab>" = "cmp.mapping.select_next_item()";
+            "<S-Tab>" = "cmp.mapping.select_prev_item()";
+            "<CR>" = "cmp.mapping.confirm({ select = false })";
+            "<C-Space>" = "cmp.mapping.complete()";
+            "<C-e>" = "cmp.mapping.abort()";
+          };
+          snippet.expand = "function(args) require('luasnip').lsp_expand(args.body) end";
+          sources = [
+            { name = "nvim_lsp"; }
+            { name = "luasnip"; }
+            { name = "buffer"; }
+            { name = "path"; }
+          ];
+        };
+      };
+
+      # Fuzzy finder (files / live grep / symbols); rg + fd are already on PATH.
+      telescope = {
+        enable = true;
+        extensions.fzf-native.enable = true;
+      };
+      gitsigns.enable = true; # gutter signs, stage-hunk, blame
+      which-key.enable = true; # popup of pending keybindings (leader is Space)
+      trouble.enable = true; # project-wide diagnostics/quickfix list
+      lualine = {
+        enable = true;
+        settings.options.theme = "catppuccin-mocha";
+      };
+      comment.enable = true; # gc / gcc comment toggling
+      nvim-autopairs.enable = true;
+      treesitter-textobjects.enable = true;
+      luasnip.enable = true; # snippet engine (drives cmp's luasnip source above)
+
+      # Format-on-save, mirroring the repo's treefmt set. Filetypes with no
+      # formatter here (e.g. terraform) fall back to the LSP formatter.
+      conform-nvim = {
+        enable = true;
+        settings = {
+          formatters_by_ft = {
+            nix = [ "nixfmt" ];
+            lua = [ "stylua" ];
+            python = [ "ruff_format" ];
+            sh = [ "shfmt" ];
+            markdown = [ "prettier" ];
+            go = [ "gofumpt" ];
+          };
+          format_on_save = {
+            timeout_ms = 2000;
+            lsp_format = "fallback";
+          };
+        };
+      };
+    };
+
+    keymaps = [
+      {
+        mode = "n";
+        key = ",,";
+        action = "<cmd>NvimTreeToggle<cr>";
+        options.desc = "Toggle file tree";
+      }
+      {
+        mode = "n";
+        key = "<leader>ff";
+        action = "<cmd>Telescope find_files<cr>";
+        options.desc = "Find files";
+      }
+      {
+        mode = "n";
+        key = "<leader>fg";
+        action = "<cmd>Telescope live_grep<cr>";
+        options.desc = "Live grep";
+      }
+      {
+        mode = "n";
+        key = "<leader>fb";
+        action = "<cmd>Telescope buffers<cr>";
+        options.desc = "Buffers";
+      }
+      {
+        mode = "n";
+        key = "<leader>xx";
+        action = "<cmd>Trouble diagnostics toggle<cr>";
+        options.desc = "Diagnostics list";
+      }
+    ];
+
+    # au BufNewFile,BufRead *Jenkinsfile setf groovy
+    autoCmd = [
+      {
+        event = [
+          "BufNewFile"
+          "BufRead"
+        ];
+        pattern = [ "*Jenkinsfile" ];
+        command = "setf groovy";
+      }
+    ];
   };
 }

lyrathorpe/home/git.nix

@@ -1,11 +1,14 @@
-# Version control: git + delta pager + commitizen. The work host layers
+# Version control: git + delta pager + commitizen + lazygit. The work host
-# commit signing and an email override on top (see work/default.nix).
+# layers commit signing and an email override on top (see work.nix).
 {
   pkgs,
   lib,
   fullName,
   ...
 }:
+let
+  ctp = import ../catppuccin-mocha.nix;
+in
 {
   home.packages = [
     pkgs.commitizen
@@ -31,12 +34,26 @@
       };
 
       fetch.prune = true; # drop deleted remote-tracking branches
+      # Keep the commit-graph current (fast `git log --graph`, used by `lg`).
+      fetch.writeCommitGraph = true;
+      gc.writeCommitGraph = true;
       merge.conflictStyle = "zdiff3"; # show the common ancestor in conflicts
       diff = {
         algorithm = "histogram";
         colorMoved = "default";
       };
       rerere.enabled = true; # remember + replay conflict resolutions
+
+      # delta pager config (programs.delta is enabled below, with git
+      # integration; these keys land under [delta] in the git config).
+      # syntax-theme reuses the Catppuccin Mocha tmTheme vendored for bat in
+      # shell.nix -- delta reads bat's theme directory.
+      delta = {
+        syntax-theme = "Catppuccin Mocha";
+        navigate = true; # n/N to jump between diff hunks
+        line-numbers = true;
+        side-by-side = true;
+      };
       commit.verbose = true; # full diff in the commit-message editor
       branch.sort = "-committerdate"; # most-recent branches first
       column.ui = "auto";
@@ -50,6 +67,9 @@
         ci = "commit";
         last = "log -1 HEAD";
         unstage = "reset HEAD --";
+        amend = "commit --amend --no-edit"; # tack staged changes onto HEAD
+        fixup = "commit --fixup"; # `git fixup <sha>` -> autosquash on next rebase
+        undo = "reset --soft HEAD~1"; # undo last commit, keep the changes staged
         lg = "log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(auto)%d%C(reset)' --all";
         # commitizen (Conventional Commits, its default ruleset): `git cz c` ->
         # `cz commit`, `git cz bump`, etc. `git cc` is a shortcut for the prompt.
@@ -57,12 +77,14 @@
         cc = "!cz commit";
       };
 
-      # SSH commit signing on personal hosts too (the work module sets the same
+      # SSH commit signing. This personal key is the default; the work module
-      # on the work host). mkDefault so a host without the key in its ssh-agent
+      # (work.nix) overrides it with the work key on the EDaaS host, the same way
-      # can override to false -- otherwise commits there would fail. Reuses the
+      # user.email is overridden -- so mkDefault here lets that plain definition
-      # existing ssh key; a dedicated personal key can be swapped in later.
+      # win instead of conflicting. gpgsign is mkDefault too, so a host without
+      # the key in its ssh-agent can override it to false rather than fail every
+      # commit.
       gpg.format = "ssh";
-      user.signingkey = "key::ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAJMVgeRKnfX1G8coU3nAobI485aeUpGTMqH7+zbKI8o emma.thorpe@cloud.com";
+      user.signingkey = lib.mkDefault "key::ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPDxHvdMTOzpFWUFMtCP7C/4tIOUO3GIO2QPvaifSnWH lyrathorpe@Lyra-MBA";
       commit.gpgsign = lib.mkDefault true;
       tag.gpgsign = lib.mkDefault true;
     };
@@ -81,4 +103,17 @@
     enable = true;
     enableGitIntegration = true;
   };
+
+  # lazygit: TUI for staging/rebasing, themed to Catppuccin Mocha to match.
+  programs.lazygit = {
+    enable = true;
+    settings.gui.theme = {
+      activeBorderColor = [
+        "#${ctp.blue}"
+        "bold"
+      ];
+      inactiveBorderColor = [ "#${ctp.surface1}" ];
+      selectedLineBgColor = [ "#${ctp.surface0}" ];
+    };
+  };
 }

lyrathorpe/home/renovate-review.nix

@@ -0,0 +1,164 @@
+# Daily automated review and triage of Renovate dependency PRs awaiting Emma's
+# review.
+#
+# Host-scoped: imported only from work.nix (the EDaaS/WSL host), so the timer
+# exists on this machine alone. A systemd *user* timer runs Claude Code headless
+# once a day; it queries GitHub via the project-scoped github MCP server and
+# writes a risk-graded summary to the journal (read with
+# `journalctl --user -u renovate-review`).
+#
+# Triage policy:
+#   * PRs that are clearly low risk (patch/minor bumps to tooling, infra, test
+#     or framework libs; symmetric diff; CI green; no application logic) AND not
+#     already approved are AUTO-APPROVED headlessly. These repos enable Renovate
+#     automerge, so an approval lets the PR merge itself with no human in the
+#     loop. This is intentional and was explicitly requested.
+#   * Everything else (medium/high risk, failing/pending CI, stale branches,
+#     anything touching application logic or needing judgement) is left
+#     untouched and surfaced to Emma.
+#
+# The run records two state files under $XDG_STATE_HOME/renovate-review for the
+# once-a-day interactive-shell reminder defined below (programs.zsh.initContent):
+# `last-run` (date of the last successful run) and `needs-review.txt` (the PRs
+# that need Emma's eyes).
+#
+# Caveats (the foundation this stands on, none of it owned by this flake):
+#   * Auth is Vertex AI via gcloud Application Default Credentials
+#     (~/.config/gcloud/application_default_credentials.json). When that token
+#     can no longer refresh the run fails; re-auth with `gcloud auth login`.
+#   * The Vertex project, region and model are hardcoded below, copied from the
+#     interactive environment (the corporate launcher injects them; they live in
+#     no config file). If IT changes them, update them here. Claude Code handles
+#     its own network egress, so no proxy is set.
+#   * The github MCP server is defined in ~/code/.mcp.json, so the job runs with
+#     that directory as its working directory.
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  # The review instructions handed to headless Claude: queue -> drop archived
+  # repos -> grade risk -> auto-approve the clearly-safe ones, surface the rest.
+  reviewPrompt = ''
+    Daily Renovate PR review and triage for Emma-Thorpe_citrix.
+
+    1. github MCP search_pull_requests, query: `is:open is:pr review-requested:Emma-Thorpe_citrix author:app/jenkins-stf-jm` (jenkins-stf-jm[bot] is this org's Renovate bot), perPage 50.
+    2. Build the archived-repo exclusion set: github MCP search_repositories with query `org:csg-citrix-storefront archived:true`, perPage 100, paginate all pages (~128). Collect each archived repo full_name. Do NOT use the `archived:false` qualifier on the PR search itself; it is mis-indexed and returns zero. Filter by the repo set instead.
+    3. Drop any PR whose repository is in the archived set (e.g. csg-citrix-storefront/traefik-fips is archived; a PR to an archived repo cannot merge and is noise).
+    4. For each remaining PR: pull_request_read method=get (diff size, mergeable_state, labels, age), method=get_status (CI), and method=get_reviews (existing approvals). Read the body's dependency table for what is bumped.
+    5. Grade risk Low / Medium / High. LOW means ALL of: only patch or minor version bumps; the packages are tooling, observability, infrastructure, test, or framework/runtime libraries (not business logic); the diff is small and symmetric (version strings / lockfiles only); CI is passing; nothing security-policy-loosening. Anything that is a major bump, touches application logic, has failing or pending CI, is a stale branch needing rebase, or that you are not confident about is NOT Low.
+    6. AUTO-APPROVE the safe ones: for every PR that is Low risk AND has passing CI AND is not already approved by Emma-Thorpe_citrix, submit an approving review with pull_request_review_write (method=create, event=APPROVE, body: a one-line note that this is an automated approval of a low-risk dependency update). Approve only these. NEVER call merge. NEVER approve a Medium/High PR or one you are unsure about. (Note: these repos automerge on approval, so approval effectively merges it.)
+    7. Leave for Emma, without approving: every Medium/High risk PR, anything with failing or pending CI, stale branches, and anything needing human judgement.
+    8. Print a markdown table (PR linked, repo, change summary, size, CI, risk, action: Auto-approved / Needs review / Held) and terse notes. State how many PRs were excluded as archived.
+    9. As the FINAL lines of your output, emit machine-readable triage lines, one per PR, with these EXACT prefixes and nothing else on the line:
+       - For each PR you auto-approved:  APPROVED> owner/repo#NUMBER short title
+       - For each PR that needs Emma's review:  NEEDS> owner/repo#NUMBER (Risk) one-line reason — https://github.com/owner/repo/pull/NUMBER
+       If no PR needs Emma's review, emit no NEEDS> lines at all.
+    If the post-filter search returns zero PRs, say so in one line and emit no NEEDS> lines.
+  '';
+
+  # Hold the prompt in its own store file rather than inline, so its literal
+  # backticks and `$` don't trip shellcheck (SC2016) in the wrapper below.
+  promptFile = pkgs.writeText "renovate-review-prompt.md" reviewPrompt;
+
+  # Tools the headless run is permitted to use without interactive prompts.
+  # Read-only github MCP calls, plus review_write so it can submit APPROVE
+  # reviews on low-risk PRs. Deliberately NOT included: any merge tool.
+  allowedTools = lib.concatStringsSep "," [
+    "mcp__github-mcp__search_pull_requests"
+    "mcp__github-mcp__search_repositories"
+    "mcp__github-mcp__pull_request_read"
+    "mcp__github-mcp__pull_request_review_write"
+  ];
+
+  # Where the run records state for the interactive-shell reminder.
+  stateDir = "$HOME/.local/state/renovate-review";
+
+  renovate-review = pkgs.writeShellApplication {
+    name = "renovate-review";
+    runtimeInputs = [ config.programs.claude-code.package ];
+    text = ''
+      # The github MCP server is project-scoped to ~/code; run from there.
+      cd "$HOME/code"
+
+      # Claude Code auth + endpoint: Vertex AI. These are injected into the
+      # interactive shell by the corporate launcher (not present in any config
+      # file), so a systemd-spawned process must set them explicitly. Do NOT set
+      # HTTP(S)_PROXY: Claude Code self-provisions its own network egress to
+      # Vertex; forcing a proxy here points it at a per-session socket that does
+      # not exist outside an interactive launch and breaks connectivity.
+      export CLAUDE_CODE_USE_VERTEX=1
+      export ANTHROPIC_VERTEX_PROJECT_ID=claude-code-citrix
+      export CLOUD_ML_REGION=global
+      export ANTHROPIC_MODEL='claude-opus-4-8[1m]'
+
+      # Capture the run so we can both log it (journal) and persist the triage
+      # for the shell reminder. If claude exits non-zero, errexit aborts here and
+      # the state files are left stale, so the reminder will flag a missed run.
+      out="$(claude -p "$(cat ${promptFile})" \
+        --allowedTools ${lib.escapeShellArg allowedTools} \
+        --output-format text)"
+
+      printf '%s\n' "$out"
+
+      # Persist state for programs.zsh.initContent's daily reminder. needs-review
+      # gets the PRs Claude flagged for Emma (the NEEDS> lines, prefix stripped);
+      # it is empty when nothing needs her attention. grep || true: no matches is
+      # the all-clear case, not an error.
+      mkdir -p "${stateDir}"
+      printf '%s\n' "$out" | grep '^NEEDS> ' | sed 's/^NEEDS> //' > "${stateDir}/needs-review.txt" || true
+      date +%F > "${stateDir}/last-run"
+    '';
+  };
+in
+{
+  systemd.user.services.renovate-review = {
+    Unit.Description = "Daily Renovate PR review (headless Claude Code)";
+    Service = {
+      Type = "oneshot";
+      ExecStart = lib.getExe renovate-review;
+    };
+  };
+
+  systemd.user.timers.renovate-review = {
+    Unit.Description = "Schedule the daily Renovate PR review";
+    Timer = {
+      OnCalendar = "*-*-* 08:47:00";
+      # Run on next boot if the machine was off at the scheduled time.
+      Persistent = true;
+      # Avoid firing exactly on the minute boundary.
+      RandomizedDelaySec = "5m";
+    };
+    Install.WantedBy = [ "timers.target" ];
+  };
+
+  # Interactive-shell reminder: nudge once per calendar day about the daily
+  # Renovate timer -- whether it actually ran, and any PRs that need Emma's eyes
+  # (the auto-approved ones need no nudge). Throttled via a `reminded-on` marker
+  # so it prints in the first shell/tmux pane of the day, not every pane. mkOrder
+  # 1600 runs after shell.nix's tmux re-exec (order 200), so it fires inside the
+  # tmux pane where Emma actually reads it.
+  programs.zsh.initContent = lib.mkOrder 1600 ''
+    if [[ $- == *i* ]]; then
+      __rr_dir="$HOME/.local/state/renovate-review"
+      __rr_today=$(date +%F)
+      if [[ "$(cat "$__rr_dir/reminded-on" 2>/dev/null)" != "$__rr_today" ]]; then
+        __rr_last=$(cat "$__rr_dir/last-run" 2>/dev/null)
+        if [[ "$__rr_last" != "$__rr_today" ]]; then
+          print -P "%F{yellow}renovate:%f last review ''${__rr_last:-never} (not today) -- check: systemctl --user status renovate-review"
+        fi
+        if [[ -s "$__rr_dir/needs-review.txt" ]]; then
+          print -P "%F{red}renovate:%f $(grep -c . "$__rr_dir/needs-review.txt") PR(s) need your review:"
+          sed 's/^/  - /' "$__rr_dir/needs-review.txt"
+          print -P "  -> journalctl --user -u renovate-review -e"
+        elif [[ "$__rr_last" == "$__rr_today" ]]; then
+          print -P "%F{green}renovate:%f reviewed today -- low-risk auto-approved, nothing for you."
+        fi
+        mkdir -p "$__rr_dir" && print -r -- "$__rr_today" > "$__rr_dir/reminded-on"
+      fi
+      unset __rr_dir __rr_today __rr_last
+    fi
+  '';
+}

lyrathorpe/home/shell.nix

@@ -1,10 +1,15 @@
 # Interactive shell: zsh + tmux. Wanted on every host.
 {
+  config,
   lib,
   pkgs,
   inputs,
   ...
 }:
+let
+  # Shared Catppuccin Mocha palette: raw 6-hex strings, no leading "#".
+  ctp = import ../catppuccin-mocha.nix;
+in
 {
   imports = [
     # Prebuilt nix-index database -> working command-not-found
@@ -12,8 +17,34 @@
     inputs.nix-index-database.homeModules.default
   ];
 
+  # CLI staples wanted on every host (search, parse, monitor). ripgrep/fd also
+  # back fzf and editor integrations; tea is the Gitea CLI for code.emmathe.dev.
+  home.packages = [
+    pkgs.ripgrep
+    pkgs.fd
+    pkgs.jq
+    pkgs.tea
+    pkgs.hyperfine # command-line benchmarking
+    pkgs.sd # saner find-and-replace than sed
+  ];
+
+  # Resource monitor, themed Catppuccin Mocha to match the rest of the desktop.
+  # btop does not bundle the theme, so vendor it from catppuccin/btop (pinned).
+  programs.btop = {
+    enable = true;
+    settings.color_theme = "catppuccin_mocha";
+  };
+  xdg.configFile."btop/themes/catppuccin_mocha.theme".source = pkgs.fetchurl {
+    url = "https://raw.githubusercontent.com/catppuccin/btop/f437574b600f1c6d932627050b15ff5153b58fa3/themes/catppuccin_mocha.theme";
+    hash = "sha256-THRpq5vaKCwf9gaso3ycC4TNDLZtBB5Ofh/tOXkfRkQ=";
+  };
+
   programs.zsh = {
     enable = true;
+    # Keep zsh dotfiles under XDG (~/.config/zsh) rather than the legacy $HOME
+    # layout, matching xdg.enable. history.path is pinned below so the existing
+    # ~/.zsh_history is reused, not orphaned by the dotDir move.
+    dotDir = "${config.xdg.configHome}/zsh";
     enableCompletion = true;
     enableVteIntegration = true;
     autosuggestion.enable = true;
@@ -33,6 +64,9 @@
       ];
     };
     history = {
+      # Stay at the legacy ~/.zsh_history (default would follow dotDir into
+      # ~/.config/zsh and orphan the existing file). Keeps history intact.
+      path = "${config.home.homeDirectory}/.zsh_history";
       append = true; # append, don't overwrite, on shell exit
       size = 100000; # in-memory (HISTSIZE)
       save = 100000; # on-disk (SAVEHIST)
@@ -99,6 +133,23 @@
   programs.fzf = {
     enable = true;
     enableZshIntegration = true;
+    # Catppuccin Mocha colours (rendered into FZF_DEFAULT_OPTS --color). Each
+    # value needs a leading "#"; the palette stores raw hex.
+    colors = {
+      "bg" = "#${ctp.base}";
+      "bg+" = "#${ctp.surface1}"; # current line / selected row
+      "fg" = "#${ctp.text}";
+      "fg+" = "#${ctp.text}";
+      "hl" = "#${ctp.blue}"; # match highlights
+      "hl+" = "#${ctp.blue}";
+      "header" = "#${ctp.red}";
+      "info" = "#${ctp.mauve}";
+      "marker" = "#${ctp.green}";
+      "pointer" = "#${ctp.pink}";
+      "prompt" = "#${ctp.mauve}";
+      "spinner" = "#${ctp.pink}";
+      "border" = "#${ctp.surface1}";
+    };
   };
 
   # Frecency directory jumping: `z <fragment>`.
@@ -120,8 +171,22 @@
     icons = "auto"; # boolean form is deprecated
   };
 
-  # Syntax-highlighting pager, used as `bat` (acts like cat when piped).
+  # Syntax-highlighting pager, used as `bat` (acts like cat when piped). bat
-  programs.bat.enable = true;
+  # ships no Catppuccin theme, so vendor the upstream tmTheme from catppuccin/bat
+  # (delta in git.nix reuses it as its syntax-theme).
+  programs.bat = {
+    enable = true;
+    config.theme = "Catppuccin Mocha";
+    themes."Catppuccin Mocha" = {
+      src = pkgs.fetchFromGitHub {
+        owner = "catppuccin";
+        repo = "bat";
+        rev = "6810349b28055dce54076712fc05fc68da4b8ec0";
+        sha256 = "1y5sfi7jfr97z1g6vm2mzbsw59j1jizwlmbadvmx842m0i5ak5ll";
+      };
+      file = "themes/Catppuccin Mocha.tmTheme";
+    };
+  };
 
   # command-not-found backed by the prebuilt nix-index DB (module imported
   # above). `comma` runs an uninstalled program once: `, cowsay hi`.
@@ -138,6 +203,16 @@
     flake = "$HOME/code/nixfiles";
   };
 
+  # GitHub CLI. `programs.gh.settings` is deliberately unset: home-manager renders
+  # ~/.config/gh/config.yml as a read-only /nix/store symlink whenever the module
+  # is enabled, but gh must rewrite that file on `gh auth login` and `gh config
+  # set`, which then fail with a permission error. Suppress the managed config.yml
+  # (below) and let gh own it. The token lives in hosts.yml, which is never
+  # Nix-managed. Set the SSH protocol once at runtime: `gh config set git_protocol
+  # ssh` (it can't be declarative here without recreating the immutable file).
+  programs.gh.enable = true;
+  xdg.configFile."gh/config.yml".enable = lib.mkForce false;
+
   programs.tmux = {
     enable = true;
     reverseSplit = true;
@@ -158,6 +233,7 @@
       sensible
       vim-tmux-navigator # Ctrl-h/j/k/l across vim splits and tmux panes
       yank
+      extrakto # prefix+Tab: fzf-grab paths/URLs/text from the pane into the prompt
       {
         # Catppuccin Mocha statusline (v2 API: flavour + window options must be
         # set before the plugin loads, which home-manager does for plugin
@@ -223,7 +299,7 @@
 
   # Add the key to the agent on first use, so the passphrase is typed once per
   # login session rather than per commit/push (commit signing uses this agent).
-  # The work box keeps its own ssh config (see work/default.nix), so this only
+  # The work box keeps its own ssh config (see work.nix), so this only
   # manages ~/.ssh/config on the personal hosts.
   programs.ssh = {
     enable = true;
@@ -272,12 +348,70 @@
   # enables this in the work module; both being true merges cleanly.
   services.ssh-agent.enable = lib.mkIf pkgs.stdenv.hostPlatform.isLinux true;
 
-  # Drop the zsh completion dump on every activation. A stale ~/.zcompdump
+  # Classic process viewer (complements btop). htop has no custom-theme support
-  # caches /nix/store paths to completion functions; once a rebuild or a manual
+  # -- only a handful of built-in color schemes -- so it can't be hex-themed like
-  # GC removes them, compinit fails with "_git: function definition file not
+  # btop/bat/fzf. color_scheme = 0 (Default) draws from the terminal's ANSI
-  # found" for every completion. Deleting it forces a fresh rebuild from the
+  # palette, which is Catppuccin Mocha (foot/iTerm2), so it matches by deferring
-  # current fpath on the next shell.
+  # to the terminal rather than vendoring a theme.
+  programs.htop = {
+    enable = true;
+    settings = {
+      color_scheme = 0; # Default -> uses the terminal's Catppuccin palette
+      delay = 15; # refresh every 1.5s
+      cpu_count_from_one = 1;
+      show_cpu_frequency = 1;
+      show_cpu_usage = 1; # per-core usage shown in the CPU bars
+      highlight_base_name = 1; # highlight the program name within the path
+      highlight_megabytes = 1;
+      highlight_threads = 1;
+      hide_kernel_threads = 1;
+      show_program_path = 0; # show just the command, not the full path
+      tree_view = 1; # start in process-tree mode
+      tree_view_always_by_pid = 0;
+      account_guest_in_cpu_meter = 0;
+      fields = with config.lib.htop.fields; [
+        PID
+        USER
+        PRIORITY
+        NICE
+        M_SIZE
+        M_RESIDENT
+        M_SHARE
+        STATE
+        PERCENT_CPU
+        PERCENT_MEM
+        TIME
+        COMM
+      ];
+    }
+    // (
+      with config.lib.htop;
+      leftMeters [
+        (bar "AllCPUs2")
+        (bar "Memory")
+        (bar "Swap")
+      ]
+    )
+    // (
+      with config.lib.htop;
+      rightMeters [
+        (text "Tasks")
+        (text "LoadAverage")
+        (text "Uptime")
+      ]
+    );
+  };
+
+  # Drop the zsh completion dump on every activation. A stale .zcompdump caches
+  # /nix/store paths to completion functions; once a rebuild or a manual GC
+  # removes them, compinit fails with "_git: function definition file not found"
+  # for every completion. Deleting it forces a fresh rebuild from the current
+  # fpath on the next shell. compinit dumps to $ZDOTDIR (~/.config/zsh now); the
+  # $HOME and cache paths are also swept to clear any legacy leftovers.
   home.activation.resetZcompdump = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
-    $DRY_RUN_CMD rm -f "$HOME"/.zcompdump* "''${XDG_CACHE_HOME:-$HOME/.cache}"/zsh/.zcompdump* 2>/dev/null || true
+    $DRY_RUN_CMD rm -f \
+      "${config.xdg.configHome}"/zsh/.zcompdump* \
+      "$HOME"/.zcompdump* \
+      "''${XDG_CACHE_HOME:-$HOME/.cache}"/zsh/.zcompdump* 2>/dev/null || true
   '';
 }

lyrathorpe/home/sway.nix

@@ -1,11 +1,13 @@
 # Declarative Sway window manager, status bar, lock, idle and notifications.
 # Imported via ./desktop.nix, so only graphical hosts get it.
 #
-# The compositor binary, PAM and polkit integration come from the system-level
+# The compositor binary, PAM and the polkit *daemon* come from the system-level
 # programs.sway (see ../swaywm.nix); package = null below reuses it instead of
-# pulling a second Sway. home-manager owns the user config (~/.config/sway) and
+# pulling a second Sway. The polkit authentication *agent* (the thing that draws
-# wires the systemd user session (sway-session.target), which is what lets the
+# the GUI auth dialog) is a user service started here. home-manager owns the user
-# swayidle/dunst user services start with the desktop.
+# config (~/.config/sway) and wires the systemd user session (sway-session.target),
+# which is what lets the agent/swayidle/dunst/kanshi user services start with the
+# desktop.
 {
   pkgs,
   lib,
@@ -99,6 +101,16 @@ in
           criteria.app_id = "launcher";
           command = "floating enable, resize set 800 500";
         }
+        # Don't let swayidle blank/lock during fullscreen video. Two rules cover
+        # native Wayland (app_id) and XWayland (class) clients.
+        {
+          criteria.app_id = ".*";
+          command = "inhibit_idle fullscreen";
+        }
+        {
+          criteria.class = ".*";
+          command = "inhibit_idle fullscreen";
+        }
       ];
 
       # Binding modes (submenus). Entered from keybindings below; each action
@@ -277,6 +289,64 @@ in
   # an old entry through fuzzel.
   services.clipman.enable = true;
 
+  # Polkit authentication agent. programs.sway (system) enables the polkit
+  # daemon but no agent, so GUI privilege prompts (nemo mounting a disk,
+  # NetworkManager/blueman editing a system resource) would otherwise fail
+  # silently. lxqt-policykit is a small, toolkit-light agent; bind it to the
+  # Sway session so it starts and stops with the desktop.
+  systemd.user.services.polkit-lxqt = {
+    Unit = {
+      Description = "lxqt-policykit polkit authentication agent";
+      PartOf = [ "graphical-session.target" ];
+      After = [ "graphical-session.target" ];
+    };
+    Service = {
+      ExecStart = "${pkgs.lxqt.lxqt-policykit}/bin/lxqt-policykit-agent";
+      Restart = "on-failure";
+    };
+    Install.WantedBy = [ "sway-session.target" ];
+  };
+
+  # Output/display management. Reacts to hotplug and applies per-display
+  # mode/scale/position. Profiles are hardware-specific: the safe default below
+  # just enables the internal laptop panel; add docked/desktop profiles with the
+  # real identifiers from `swaymsg -t get_outputs` (e.g. the Mac Pro's Apple
+  # Cinema Display with its scale, or a docked laptop + external monitor).
+  services.kanshi = {
+    enable = true;
+    settings = [
+      {
+        profile.name = "undocked";
+        profile.outputs = [
+          {
+            criteria = "eDP-1";
+            status = "enable";
+          }
+        ];
+      }
+      # Example to copy per host (fill in real criteria/mode/scale/position):
+      # {
+      #   profile.name = "desktop";
+      #   profile.outputs = [
+      #     { criteria = "Apple Computer Inc Cinema HD ..."; mode = "2560x1600"; scale = 1.0; position = "0,0"; status = "enable"; }
+      #   ];
+      # }
+    ];
+  };
+
+  # Night light. Manual location (no geoclue dependency); adjust the coordinates
+  # to taste. Warmer at night, neutral by day.
+  services.gammastep = {
+    enable = true;
+    provider = "manual";
+    latitude = 51.5;
+    longitude = -0.13; # London-ish; set to your actual location
+    temperature = {
+      day = 6500;
+      night = 3700;
+    };
+  };
+
   # fuzzel: the dmenu picker used by clipman, themed Catppuccin Mocha to match
   # (fuzzel colours are RRGGBBAA -- 8 hex digits).
   programs.fuzzel = {

lyrathorpe/home/work.nix

@@ -1,6 +1,13 @@
+# Home-manager module for the work (EDaaS/WSL) profile: corporate git signing,
+# work toolchain packages and tmux tweaks. Imported only by the work host.
 { pkgs, lib, ... }:
 
 {
+  # Host-scoped extras for this machine only (the EDaaS/WSL host).
+  imports = [
+    ./renovate-review.nix # daily headless Renovate PR review (systemd user timer)
+  ];
+
   # The work box keeps its own (corporate) ~/.ssh/config; don't let the personal
   # programs.ssh (shell.nix) take it over. The ssh-agent below still runs.
   programs.ssh.enable = lib.mkForce false;
@@ -35,8 +42,15 @@
     pkgs.automake
     pkgs.pkg-config
     pkgs.wget
-    pkgs.claude-code
     pkgs.google-cloud-sdk
+    # Day-to-day Kubernetes / Helm / Terraform accelerators for this box.
+    pkgs.k9s # cluster TUI
+    pkgs.kubectx # kubectx + kubens (context/namespace switch)
+    pkgs.stern # multi-pod log tail
+    pkgs.dyff # semantic YAML/manifest diffs (Helm release drift)
+    pkgs.tflint # Terraform linter (catches what terraformls won't)
+    pkgs.terraform-docs # generate Terraform module docs
+    pkgs.yq-go # jq for YAML
   ];
   services.ssh-agent.enable = true;
   home.shellAliases = {
@@ -50,4 +64,13 @@
   programs.go = {
     enable = true;
   };
+
+  # LSP servers only relevant to work: C# (omnisharp) and Helm charts (helm_ls).
+  # The shared editor (lyrathorpe/home/editor.nix) carries the universal ones;
+  # these are gated to this host so the heavy omnisharp closure stays off the
+  # personal machines. Tree-sitter grammars (highlighting) remain global there.
+  programs.nixvim.plugins.lsp.servers = {
+    omnisharp.enable = true;
+    helm_ls.enable = true;
+  };
 }

lyrathorpe/swaywm.nix

@@ -11,9 +11,9 @@ let
   ctp = import ./catppuccin-mocha.nix;
 in
 {
-  options = {
+  # The features.swayDesktop.enable option is declared in
-    features.swayDesktop.enable = lib.mkEnableOption "Enable Sway Desktop";
+  # system/modules/features.nix (so headless hosts can read/set it without
-  };
+  # importing this module). This module only provides its implementation.
   config = lib.mkIf cfg.enable {
     programs.sway = {
       enable = true;

statix.toml

@@ -0,0 +1,8 @@
+# statix lint config. Two default lints are disabled because they flag this
+# repo's intentional house style, not bugs:
+#   repeated_keys  - we use `foo.a = ...; foo.b = ...;` (dotted) over nesting.
+#   empty_pattern  - module files use `{ ... }:` / `{ }:` deliberately.
+disabled = [
+  "repeated_keys",
+  "empty_pattern",
+]

system/machine/Darwin/configuration.nix

@@ -80,7 +80,7 @@
   };
 
   # Declarative Homebrew for packages with no nixpkgs equivalent or that must be
-  # the vendor build (GUI casks, Mac App Store apps).
+  # the vendor build (GUI casks).
   homebrew = {
     enable = true;
     onActivation = {
@@ -97,6 +97,7 @@
       "llvm@21"
       "lld@21"
       "python@3.14"
+      "dosbox-staging"
     ];
     # GUI applications. macOS app bundles are managed as casks; nixpkgs darwin
     # GUI support is unreliable, so these stay on brew for continuity.
@@ -136,18 +137,45 @@
       "vscodium"
       "winbox"
     ];
-    masApps = {
+    # Mac App Store apps are not managed declaratively: nix-darwin 26.05 forces
-      Amphetamine = 937984704;
+    # activation to run as root, and `mas` cannot reach the App Store session
-      "Apple Configurator" = 1037126344;
+    # from root, so installs silently fail. Install them by hand with
-      "Game Controller Tester" = 1500593102;
+    # `mas install <id>` from a GUI Terminal (the `mas` CLI is in
-      "Home Assistant" = 1099568401;
+    # environment.systemPackages above).
-      Infuse = 1136220934;
+  };
-      Keynote = 409183694;
+
-      Numbers = 409203825;
+  # Touch ID authorises sudo (and darwin-rebuild's sudo prompt) instead of a
-      Pages = 409201541;
+  # typed password. sudo_local keeps the change in /etc/pam.d/sudo_local so it
-      PDFgear = 6469021132;
+  # survives macOS updates. reattach pulls in pam_reattach: pam_tid (Touch ID)
-      PL2303Serial = 1624835354;
+  # otherwise fails inside tmux/screen because the process is detached from the
-      WireGuard = 1451685025;
+  # GUI login session -- and terminals here auto-start tmux, so it is required.
+  security.pam.services.sudo_local = {
+    touchIdAuth = true;
+    reattach = true;
+  };
+
+  # Declarative macOS UI defaults -- the main reason to run nix-darwin beyond
+  # package management. Applied on activation; all reversible.
+  system.defaults = {
+    dock = {
+      show-recents = false;
+      mru-spaces = false; # don't reorder spaces by use
+    };
+    finder = {
+      AppleShowAllExtensions = true;
+      ShowPathbar = true;
+      FXPreferredViewStyle = "Nlsv"; # list view
+      _FXShowPosixPathInTitle = true;
+    };
+    NSGlobalDomain = {
+      AppleInterfaceStyle = "Dark";
+      ApplePressAndHoldEnabled = false; # key-repeat instead of the accent popup
+      InitialKeyRepeat = 15;
+      KeyRepeat = 2;
+    };
+    trackpad = {
+      Clicking = true; # tap to click
+      TrackpadThreeFingerDrag = true;
     };
   };
 

system/machine/EDaaS/configuration.nix

@@ -19,9 +19,7 @@
     defaultUser = "emmathorpe";
     wslConf.automount.root = "/mnt";
     wslConf.interop.appendWindowsPath = true;
-    wslConf.interop.register = true;
     wslConf.interop.enabled = true;
-    wslConf.interop.includePath = true;
     wslConf.network.generateHosts = false;
     startMenuLaunchers = true;
     docker-desktop.enable = false;
@@ -43,6 +41,11 @@
     autoPrune.enable = true;
   };
 
+  # Match the flake's nixosConfigurations attribute name so `nh os switch`
+  # (which selects by the local hostname) resolves without an explicit
+  # -H/--hostname flag. The default would otherwise be the stock NixOS "nixos".
+  networking.hostName = "emmathorpe-edaas";
+
   networking.resolvconf.enable = false;
 
   # Drop the systemd-ssh-proxy Include from the generated /etc/ssh/ssh_config.
@@ -58,7 +61,14 @@
   systemd.services.docker-desktop-proxy.script = lib.mkForce ''${config.wsl.wslConf.automount.root}/wsl/docker-desktop/docker-desktop-user-distro proxy --docker-desktop-root ${config.wsl.wslConf.automount.root}/wsl/docker-desktop "C:\Program Files\Docker\Docker\resources"'';
 
   features.swayDesktop.enable = false;
-  programs.nix-ld.enable = true;
+
+  # Keep this user's systemd --user instance running without an open login
+  # session, so the home-manager user timer (renovate-review.nix) fires on
+  # schedule even when no terminal is attached. On WSL the timer still only runs
+  # while the distro itself is up; Persistent=true catches up a missed run at
+  # next start.
+  users.users.emmathorpe.linger = true;
+  # programs.nix-ld is enabled for all NixOS hosts in common-nixos.nix.
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system were taken. It's perfectly fine and recommended to leave

system/machine/MBP-Asahi/configuration.nix

@@ -12,11 +12,20 @@
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = false;
 
-  networking.hostName = "Emma-Asahi";
+  networking.hostName = "Lyra-Asahi";
 
-  # No fingerprint reader on this machine; empty service still lets swaylock
+  # Audio (PipeWire) and the swaylock PAM stack are inherited from
-  # authenticate via password.
+  # workstation.nix. hardware.enableRedistributableFirmware is also set there;
-  security.pam.services.swaylock = { };
+  # it is harmless here since Asahi supplies its own peripheral firmware below.
+
+  # Binary cache for the Asahi kernel/build artifacts, so the MBP pulls prebuilt
+  # outputs instead of compiling the Asahi kernel locally.
+  nix.settings = {
+    substituters = [ "https://nixos-apple-silicon.cachix.org" ];
+    trusted-public-keys = [
+      "nixos-apple-silicon.cachix.org-1:8psDu5SA5dAD7qA0zMy5UT292TxeEPzIz8VVEr2Js20="
+    ];
+  };
 
   # Apple peripheral firmware (Wi-Fi/Bluetooth). The directory is gitignored and
   # populated out-of-band -- see README.

system/machine/MacPro31/README.md

@@ -6,10 +6,11 @@ Flake host: `lyrathorpe-macpro31`. Desktop (`portable = false`, imports
 
 ## Hardware configuration
 
-`hardware-configuration.nix` here is a hand-written **placeholder**. On the real
+`hardware-configuration.nix` here is the real config generated by
-machine, run `nixos-generate-config`, replace the file, and commit it. It assumes
+`nixos-generate-config` on the machine. Root is an **LVM** logical volume
-by-label partitions — ESP `ESP` (vfat, mounted at `/boot`), root `nixos` (ext4),
+(`/dev/mapper/MacPro-Root`, ext4); the ESP (vfat) and swap are referenced by
-and `swap` — so either label them at install time or swap in the generated UUIDs.
+UUID. The initrd carries `dm-snapshot` for the LVM root. Regenerate and commit
+if the disk layout changes.
 
 ## Bootloader
 

system/machine/MacPro31/configuration.nix

@@ -22,24 +22,18 @@
 
   networking.hostName = "MacPro31-NixOS";
 
+  # Elderly host: a compressed RAM swap softens memory pressure (earlyoom in
+  # workstation.nix is the backstop).
+  zramSwap.enable = true;
+
   # This host accepts SSH, so open 22 (the firewall itself is enabled in
   # workstation.nix with a default-deny policy).
   services.openssh.enable = true;
   networking.firewall.allowedTCPPorts = [ 22 ];
 
-  services.pipewire = {
+  # Dual Harpertown Xeon microcode. Redistributable firmware (GPU/NIC blobs) is
-    enable = true;
+  # enabled in workstation.nix.
-    pulse.enable = true;
-  };
-
-  # No fingerprint hardware; empty service still lets swaylock authenticate via
-  # password.
-  security.pam.services.swaylock = { };
-
-  # Dual Harpertown Xeon microcode + redistributable firmware (e.g. GPU/NIC
-  # blobs).
   hardware.cpu.intel.updateMicrocode = true;
-  hardware.enableRedistributableFirmware = true;
 
   # GPU note: the stock card varies between units -- ATI Radeon HD 2600 XT or
   # NVIDIA GeForce 8800 GT. Sway needs a working KMS/modesetting driver; do NOT

system/machine/RPi5/README.md

@@ -0,0 +1,68 @@
+# Raspberry Pi 5 (`lyrathorpe-rpi5`)
+
+Headless `aarch64-linux` server with two roles:
+
+- **Docker host** — daemon exposed over the network (`docker.nix`).
+- **nginx reverse proxy** — declarative `virtualHosts` (`reverse-proxy.nix`).
+
+## Install
+
+1. Flash a NixOS `aarch64` SD image (or USB) and boot the Pi. The
+   `raspberry-pi-5` profile from `nixos-hardware` (wired in the flake host table)
+   supplies the kernel, firmware and device tree; boot is U-Boot + extlinux.
+2. Partition/mount the target, then **regenerate the hardware config on the
+   device** and replace the committed placeholder:
+   ```sh
+   nixos-generate-config --root /mnt
+   # copy /mnt/etc/nixos/hardware-configuration.nix over
+   # system/machine/RPi5/hardware-configuration.nix in this repo, then commit
+   ```
+   `hardware-configuration.nix` in this directory is a **placeholder** committed
+   only so the host evaluates in CI. The machine will not boot correctly until it
+   is replaced with the generated one.
+3. Set the host name to match the flake attribute (already done in
+   `configuration.nix`: `lyrathorpe-rpi5`) and build:
+   ```sh
+   sudo nixos-rebuild switch --flake .#lyrathorpe-rpi5
+   # or, once the hostname is live:
+   nh os switch
+   ```
+4. Give the login user a password (`passwd lyrathorpe`) and confirm the key in
+   `system/modules/ssh.nix` is the one you will connect with.
+
+## Docker socket (security)
+
+The daemon listens on **plain TCP `2375`, no TLS, no auth**. Access is
+root-equivalent on this host. The only protection is the nftables rule in
+`docker.nix`, which accepts `2375` **only** from the trusted LAN subnet
+(`10.187.1.0/24` by default — change it to match your network). Do not widen
+that subnet to anything untrusted.
+
+From a LAN client:
+
+```sh
+export DOCKER_HOST=tcp://lyrathorpe-rpi5:2375
+docker info
+```
+
+The secure upgrade path is mutual TLS on `2376` (`--tlsverify` with a CA and
+client certs); it needs out-of-band cert provisioning and is intentionally not
+wired here.
+
+## Adding a reverse-proxy site
+
+Each proxied service is a Nix entry in `reverse-proxy.nix`:
+
+```nix
+services.nginx.virtualHosts."app.example.lan" = {
+  # enableACME = true; forceSSL = true;   # once a DNS name + cert exist
+  locations."/" = {
+    proxyPass = "http://127.0.0.1:8080";  # e.g. a local container
+    proxyWebsockets = true;
+  };
+};
+```
+
+The example vhost is HTTP-only by design. Turn on `enableACME`/`forceSSL`
+per-vhost once the host has a real DNS name and the ACME challenge can be met;
+`443` is already open in the firewall.

system/machine/RPi5/configuration.nix

@@ -0,0 +1,40 @@
+# Raspberry Pi 5 (aarch64) headless server. Two roles, split into submodules:
+# ./docker.nix (Docker host with a network socket) and ./reverse-proxy.nix
+# (native nginx). The raspberry-pi-5 nixos-hardware profile (kernel, firmware,
+# device tree) and key-only sshd (../../modules/ssh.nix) are layered on in the
+# flake host table. Install notes: see ./README.md.
+{ ... }:
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./docker.nix
+    ./reverse-proxy.nix
+  ];
+
+  # Match the flake's nixosConfigurations attribute name so `nh os switch`
+  # (which selects by the local hostname) resolves without an explicit -H flag.
+  networking.hostName = "lyrathorpe-rpi5";
+
+  # Headless server: the Sway desktop is intentionally not set up. swaywm.nix is
+  # not imported and features.swayDesktop.enable defaults to false (declared in
+  # system/modules/features.nix), so this host keeps plain TTY/SSH login.
+
+  # Raspberry Pi boots via U-Boot + extlinux, not GRUB/systemd-boot. The
+  # raspberry-pi-5 nixos-hardware profile supplies the kernel, firmware and
+  # device tree.
+  boot.loader.grub.enable = false;
+  boot.loader.generic-extlinux-compatible.enable = true;
+
+  # Remote administration. Key-only policy and the authorized key come from
+  # ../../modules/ssh.nix; here we just enable the daemon and open the port.
+  services.openssh.enable = true;
+
+  # Default-deny inbound. Open only SSH here; the Docker and nginx submodules
+  # open their own ports (Docker via a source-restricted nftables rule, nginx
+  # via 80/443). List-valued, so these merge with the submodule definitions.
+  networking.firewall.enable = true;
+  networking.firewall.allowedTCPPorts = [ 22 ];
+
+  # See `man configuration.nix` / the stateVersion docs before changing.
+  system.stateVersion = "26.05";
+}

system/machine/RPi5/docker.nix

@@ -0,0 +1,34 @@
+# Docker host with the daemon socket exposed over the network.
+#
+# SECURITY: the daemon listens on plain TCP 2375 with NO TLS and NO auth. Access
+# to that port is root-equivalent on this host (the Docker API can mount the
+# host filesystem and run privileged containers). The ONLY thing protecting it
+# is the nftables rule below, which accepts 2375 solely from the trusted LAN
+# subnet. Do not widen that subnet to anything you do not fully trust. The
+# secure upgrade path is mutual TLS on 2376 (--tlsverify with client certs);
+# that needs out-of-band cert provisioning and is intentionally not wired here.
+{ ... }:
+{
+  virtualisation.docker.enable = true;
+
+  # Expose the daemon over TCP by extending systemd socket activation rather than
+  # setting daemon.settings.hosts. The NixOS docker unit starts dockerd with
+  # `-H fd://` and takes its listeners from this socket; putting `hosts` in
+  # daemon.json as well would conflict with that and dockerd would refuse to
+  # start. Adding the TCP listener here keeps a single source of truth.
+  # The leading "" resets the unit's default (unix-socket-only) ListenStream list.
+  systemd.sockets.docker.socketConfig.ListenStream = [
+    ""
+    "/run/docker.sock"
+    "0.0.0.0:2375"
+  ];
+
+  # Source-restricted firewall rule for the Docker TCP port. 2375 is deliberately
+  # NOT added to networking.firewall.allowedTCPPorts (that would open it to every
+  # source); instead nftables accepts it only from the trusted subnet. Adjust the
+  # CIDR to match the LAN that should reach the Docker API.
+  networking.nftables.enable = true;
+  networking.firewall.extraInputRules = ''
+    ip saddr 10.187.1.0/24 tcp dport 2375 accept
+  '';
+}

system/machine/RPi5/hardware-configuration.nix

@@ -0,0 +1,31 @@
+# PLACEHOLDER hardware configuration for the Raspberry Pi 5.
+#
+# This file is NOT the real generated config -- it exists only so the host
+# evaluates in CI before the Pi is provisioned. The machine will not boot from
+# it as-is. On first install, regenerate this file on the device with
+#   nixos-generate-config --root /mnt
+# and replace this placeholder with the output (commit it). See ./README.md.
+#
+# Like every hardware-configuration.nix in this repo, this file is excluded from
+# the formatter and linters (see the pre-commit/treefmt excludes in flake.nix).
+{ modulesPath, ... }:
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  nixpkgs.hostPlatform = "aarch64-linux";
+
+  # The Raspberry Pi 5 boots from an SD card / USB with a FAT firmware partition
+  # and an ext4 root. Labels match the conventional sd-image layout; the real
+  # generated config will use by-uuid device paths instead.
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/NIXOS_SD";
+    fsType = "ext4";
+  };
+
+  fileSystems."/boot/firmware" = {
+    device = "/dev/disk/by-label/FIRMWARE";
+    fsType = "vfat";
+  };
+
+  swapDevices = [ ];
+}

system/machine/RPi5/reverse-proxy.nix

@@ -0,0 +1,39 @@
+# Native nginx reverse proxy. The proxy configuration is declarative Nix:
+# every proxied service is an entry under services.nginx.virtualHosts, so the
+# whole routing table lives in this file and is built/version-controlled with
+# the rest of the system.
+#
+# To add a proxied service, add another virtualHosts."<host>" entry following
+# the example below. To serve it over HTTPS, uncomment enableACME + forceSSL on
+# that vhost once it has a real DNS name and the ACME HTTP-01/DNS-01 challenge
+# can be satisfied (see security.acme for the account/email and DNS settings).
+{ ... }:
+{
+  services.nginx = {
+    enable = true;
+    recommendedProxySettings = true; # sane proxy_set_header defaults (Host, X-Forwarded-*)
+    recommendedTlsSettings = true;
+    recommendedOptimisation = true;
+    recommendedGzipSettings = true;
+
+    virtualHosts = {
+      # Example reverse-proxy vhost. Replace the name and upstream with a real
+      # service (e.g. a container published by the Docker host on this machine).
+      "example.lan" = {
+        # enableACME = true;   # request a Let's Encrypt cert for this host
+        # forceSSL = true;     # redirect HTTP -> HTTPS once the cert exists
+        locations."/" = {
+          proxyPass = "http://127.0.0.1:8080";
+          proxyWebsockets = true; # forward Upgrade/Connection for WebSocket apps
+        };
+      };
+    };
+  };
+
+  # Public reverse-proxy ports. 443 is opened now so flipping a vhost to TLS
+  # needs no firewall change.
+  networking.firewall.allowedTCPPorts = [
+    80
+    443
+  ];
+}

system/machine/T400/README.md

@@ -15,11 +15,11 @@ install time or swap in the generated UUIDs.
 `configuration.nix` imports exactly one boot module. Default is `boot-bios.nix`;
 switch by commenting it out and uncommenting the relevant alternative.
 
-| Firmware | Module | Notes |
+| Firmware                                             | Module                   | Notes                                                                                                                                                                                                                                                                                 |
-| --- | --- | --- |
+| ---------------------------------------------------- | ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| Stock Lenovo BIOS, or coreboot + **SeaBIOS** payload | `boot-bios.nix` | GRUB on the MBR. Set `device` to the real install disk (`/dev/sda` by default). MBR/legacy layout. |
+| Stock Lenovo BIOS, or coreboot + **SeaBIOS** payload | `boot-bios.nix`          | GRUB on the MBR. Set `device` to the real install disk (`/dev/sda` by default). MBR/legacy layout.                                                                                                                                                                                    |
-| coreboot + **GRUB** payload | `boot-coreboot-grub.nix` | GRUB is config-only (`device = "nodev"`); NixOS does **not** write to a disk. Your coreboot `grub.cfg` (in the flash chip) must `search` for and `configfile` the on-disk `/boot/grub/grub.cfg`, or chainload the disk's GRUB. |
+| coreboot + **GRUB** payload                          | `boot-coreboot-grub.nix` | GRUB is config-only (`device = "nodev"`); NixOS does **not** write to a disk. Your coreboot `grub.cfg` (in the flash chip) must `search` for and `configfile` the on-disk `/boot/grub/grub.cfg`, or chainload the disk's GRUB.                                                        |
-| coreboot + **Tianocore/edk2 (UEFI)** payload | `boot-coreboot-uefi.nix` | systemd-boot. `canTouchEfiVariables = true` (coreboot honours NVRAM writes). The module **declares its own ESP** (`/boot` vfat, label `ESP`) — when you regenerate `hardware-configuration.nix`, do **not** let it also define `/boot`. Create + label an `ESP` vfat partition (GPT). |
+| coreboot + **Tianocore/edk2 (UEFI)** payload         | `boot-coreboot-uefi.nix` | systemd-boot. `canTouchEfiVariables = true` (coreboot honours NVRAM writes). The module **declares its own ESP** (`/boot` vfat, label `ESP`) — when you regenerate `hardware-configuration.nix`, do **not** let it also define `/boot`. Create + label an `ESP` vfat partition (GPT). |
 
 ## Graphics
 

system/machine/T400/configuration.nix

@@ -1,7 +1,7 @@
 # ThinkPad T400 (NixOS). Shared laptop options live in ../../modules/laptop.nix;
 # only host-specific settings are here. Install notes (boot variants, GPU,
 # partitions): see ./README.md.
-{ ... }:
+{ config, ... }:
 
 {
   imports = [
@@ -18,25 +18,28 @@
 
   console.font = "Lat2-Terminus16";
 
-  services.pipewire = {
+  # Low-RAM host (4 GiB max): a compressed RAM swap reduces disk paging.
-    enable = true;
+  zramSwap.enable = true;
-    pulse.enable = true;
-  };
 
   # This host accepts SSH, so open 22 (the firewall itself is enabled in
   # laptop.nix with a default-deny policy).
   services.openssh.enable = true;
   networking.firewall.allowedTCPPorts = [ 22 ];
 
-  # The T400's fingerprint reader differs/may be absent; empty service still
+  # Intel Core 2 (Penryn) microcode. Redistributable firmware (enabled in
-  # lets swaylock authenticate via password.
+  # workstation.nix) supplies the iwlwifi blobs (Intel WiFi Link 5100/5300) and
-  security.pam.services.swaylock = { };
+  # the radeon firmware needed by the discrete GPU below.
-
-  # Intel Core 2 (Penryn) microcode + redistributable firmware. The latter also
-  # supplies the iwlwifi blobs (Intel WiFi Link 5100/5300) and the radeon
-  # firmware needed by the discrete GPU below.
   hardware.cpu.intel.updateMicrocode = true;
-  hardware.enableRedistributableFirmware = true;
+
+  # Battery longevity: cap charging to 75-80%. tlp itself comes from the
+  # nixos-hardware lenovo-thinkpad profile; tp_smapi supplies the threshold
+  # sysfs on this 2008-era ThinkPad (kernel-native natacpi is too new for it).
+  boot.kernelModules = [ "tp_smapi" ];
+  boot.extraModulePackages = [ config.boot.kernelPackages.tp_smapi ];
+  services.tlp.settings = {
+    START_CHARGE_THRESH_BAT0 = 75;
+    STOP_CHARGE_THRESH_BAT0 = 80;
+  };
 
   # This T400 has the optional discrete GPU fitted: an ATI Mobility Radeon HD
   # 3470 (RV620), driven by the open `radeon` KMS driver. Load it in the initrd

system/modules/common-nixos.nix

@@ -6,6 +6,25 @@
   time.timeZone = "Europe/London";
   i18n.defaultLocale = "en_GB.UTF-8";
 
+  # Store hygiene. auto-optimise-store hard-links identical files in the store
+  # after each build (cheap dedupe; NOT a garbage collector -- there is
+  # deliberately no automatic GC timer). The larger download buffer avoids
+  # "buffer full" stalls when fetching big NARs over a fast link.
+  nix.settings.auto-optimise-store = true;
+  nix.settings.download-buffer-size = 134217728; # 128 MiB
+
+  # Extra binary cache for the nix-community toolchain (home-manager, nixvim,
+  # treefmt, ...). Merges with any host-specific caches (e.g. the Asahi cache on
+  # the MBP) rather than replacing them.
+  nix.settings.substituters = [ "https://nix-community.cachix.org" ];
+  nix.settings.trusted-public-keys = [
+    "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+  ];
+
+  # Run dynamically-linked foreign binaries (VS Code remote server, prebuilt
+  # toolchains, language-server downloads) on every NixOS host, not just WSL.
+  programs.nix-ld.enable = true;
+
   # Minimal system-level CLI available before the home-manager profile loads
   # (e.g. early boot / rescue). User-level tooling lives in home-manager.
   environment.systemPackages = with pkgs; [
@@ -13,9 +32,31 @@
     fastfetch
   ];
 
-  # Terminal font with powerline/Nerd glyphs. Installed on every host because
+  # Fonts on every host. The Nerd Font carries the powerline/Nerd glyphs the
-  # the tmux statusline (which uses these glyphs) runs everywhere, not just on
+  # tmux statusline uses (foot names it explicitly in home/sway.nix); Noto sans +
-  # the Sway/graphical hosts. foot names it explicitly (home/sway.nix); the Mac
+  # colour emoji prevent tofu in terminals/TUIs/Firefox -- important on the WSL
-  # installs it via the Darwin config.
+  # box, which does not pull the graphical hosts' default Noto stack. The Mac
-  fonts.packages = [ pkgs.nerd-fonts.jetbrains-mono ];
+  # installs the Nerd Font via the Darwin config.
+  fonts.packages = with pkgs; [
+    nerd-fonts.jetbrains-mono
+    noto-fonts
+    noto-fonts-color-emoji
+  ];
+  # Map the generic fontconfig families so anything asking for "monospace" gets
+  # the Nerd Font (with emoji fallback), not DejaVu.
+  fonts.fontconfig.defaultFonts = {
+    monospace = [
+      "JetBrainsMono Nerd Font"
+      "Noto Color Emoji"
+    ];
+    sansSerif = [
+      "Noto Sans"
+      "Noto Color Emoji"
+    ];
+    serif = [
+      "Noto Serif"
+      "Noto Color Emoji"
+    ];
+    emoji = [ "Noto Color Emoji" ];
+  };
 }

system/modules/features.nix

@@ -0,0 +1,12 @@
+# Feature-flag option declarations shared by every NixOS host (imported via
+# baseModules in flake.nix). Declaring the flags here -- rather than inside the
+# module that implements them -- means a host can read or set a flag without
+# importing the (often large) implementation module. In particular,
+# features.swayDesktop.enable is read by lyrathorpe/user.nix on every host, but a
+# headless host (e.g. the Pi) must be able to leave it at its default without
+# pulling in lyrathorpe/swaywm.nix. The implementation lives in swaywm.nix,
+# gated on this flag.
+{ lib, ... }:
+{
+  options.features.swayDesktop.enable = lib.mkEnableOption "the Sway desktop";
+}

system/modules/laptop.nix

@@ -12,4 +12,20 @@
     enable = true;
     settings.General.EnableNetworkConfiguration = true;
   };
+
+  # Lid behaviour: suspend on battery, lock on external power (swayidle's
+  # before-sleep hook locks before the suspend completes either way).
+  services.logind.settings.Login = {
+    HandleLidSwitch = "suspend";
+    HandleLidSwitchExternalPower = "lock";
+  };
+
+  # Bluetooth. The Asahi MBP loads Apple's BT firmware (see its host config) and
+  # the T400 has an optional BT module; enable bluez on both, with blueman as the
+  # GUI/tray manager for the Sway session.
+  hardware.bluetooth = {
+    enable = true;
+    powerOnBoot = true;
+  };
+  services.blueman.enable = true;
 }

system/modules/ssh.nix

@@ -0,0 +1,19 @@
+# Key-only SSH hardening, imported by the hosts that run sshd (T400, Mac Pro).
+# The host config still does `services.openssh.enable = true` and opens port 22
+# next to where it documents the listening service; this module only tightens
+# the policy and installs the authorized key, so a host opting into sshd cannot
+# accidentally ship password/root login.
+{ username, ... }:
+{
+  services.openssh.settings = {
+    PasswordAuthentication = false; # keys only
+    KbdInteractiveAuthentication = false; # no keyboard-interactive fallback
+    PermitRootLogin = "no";
+  };
+
+  # The key permitted to log in as the primary user. Add more entries here as
+  # new client machines are provisioned.
+  users.users.${username}.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPDxHvdMTOzpFWUFMtCP7C/4tIOUO3GIO2QPvaifSnWH lyrathorpe@Lyra-MBA"
+  ];
+}

system/modules/workstation.nix

@@ -5,13 +5,45 @@
 # The bootloader is NOT set here -- it is firmware-specific, not form-factor:
 # UEFI hosts (MBP, Mac Pro 3,1) use systemd-boot, the BIOS-only T400 uses GRUB.
 # Each machine config declares its own.
-{ ... }:
+{ lib, pkgs, ... }:
 {
   features.swayDesktop.enable = true;
 
   console.keyMap = "dvorak";
 
+  # Intel thermal management. x86 only -- the Asahi MBP governs its own SoC
+  # thermals, and thermald is an Intel-platform daemon.
+  services.thermald.enable = lib.mkIf pkgs.stdenv.hostPlatform.isx86_64 true;
+
   # Default-deny inbound. Hosts that run a listening service open their own
   # ports next to where the service is enabled (e.g. sshd -> 22 on X1).
   networking.firewall.enable = true;
+
+  # Disk hygiene for the physical hosts. fstrim reclaims unused SSD blocks on a
+  # weekly timer; cleanOnBoot wipes /tmp at every boot.
+  services.fstrim.enable = true;
+  boot.tmp.cleanOnBoot = true;
+
+  # Userspace OOM killer: act on memory pressure early instead of letting the
+  # kernel OOM-thrash. Matters on the 4 GiB T400 and the elderly Mac Pro.
+  services.earlyoom.enable = true;
+
+  # Firmware updates via LVFS. No-op on the Asahi MBP (Apple-managed firmware),
+  # useful for UEFI/SSD updates on the x86 hosts.
+  services.fwupd.enable = true;
+
+  # Audio. PipeWire with the PulseAudio shim covers every graphical host; no
+  # per-machine audio config is needed.
+  services.pipewire = {
+    enable = true;
+    pulse.enable = true;
+  };
+
+  # swaylock PAM stack. None of these machines has working fingerprint auth, so
+  # an empty service is enough -- swaylock falls back to password.
+  security.pam.services.swaylock = { };
+
+  # Redistributable firmware (GPU/Wi-Fi/NIC blobs) for the x86 hosts. Harmless
+  # on the Asahi MBP, which supplies its own peripheral firmware out-of-band.
+  hardware.enableRedistributableFirmware = true;
 }