Fix Home Manager activation and gateway defaults

[manmal]

Summary

• fix string interpolation parse error in plugin assertion message
• avoid nixpkgs alias conflict by renaming the gateway source argument
• update gateway source + pnpm deps hash for v2.0.0-beta5
• default the gateway wrapper to gateway-daemon when no args are passed
• skip empty plugin state dir mkdir and write config JSON during activation
• ensure app bundle extraction ignores __MACOSX and copies the real app
• bump the Clawdis app zip + hash to v2.0.0-beta5
• bump the batteries bundle name + RFC references to v2.0.0-beta5

Problems encountered during setup (and resolutions)

1. Nix eval failed at the first home-manager switch

   • Stage: initial switch/evaluation
   • Symptom: error: syntax error, unexpected invalid token in clawdis.nix around a concatStringsSep call.
   • Root cause: the string used \", \" inside a double-quoted Nix string, which breaks parsing.
   • Fix: remove the escaping so Nix parses the message correctly.

2. Nix eval failed with a src alias error

   • Stage: evaluation while calling the overlay
   • Symptom: The "src" package has been renamed to "simple-revision-control" from nixpkgs aliases.
   • Root cause: clawdis-gateway.nix took a function arg named src, which conflicts with nixpkgs’ src alias handling in overlays.
   • Fix: rename the argument to gatewaySrc and update the call site.

3. Fixed-output hash mismatches (gateway + pnpm)

   • Stage: build phase after eval succeeded
   • Symptom: hash mismatch for Clawdis source, then pnpm deps.
   • Root cause: upstream release moved to v2.0.0-beta5 and the pnpm lock/deps hash changed.
   • Fix: update nix/sources/clawdis-source.nix and the pnpm deps hash in clawdis-gateway.nix.

4. Home Manager activation failed when no plugins were enabled

   • Stage: activation (clawdisDirs)
   • Symptom: /bin/mkdir -p printed usage and aborted activation.
   • Root cause: an empty pluginStateDirs list produced a bare mkdir -p call.
   • Fix: guard the mkdir with a non-empty check.

5. Gateway config file missing at runtime

   • Stage: runtime / first launch
   • Symptom: gateway started without the expected config JSON on disk.
   • Root cause: the config was only provided via home.file, not written during activation.
   • Fix: write clawdis.json in activation so the gateway sees it on startup.

6. Clawdis app bundle extraction failed

   • Stage: app install
   • Symptom: Clawdis.app not found in the zip due to __MACOSX directory entries.
   • Root cause: find grabbed the resource fork path first.
   • Fix: skip __MACOSX when locating the app bundle.

7. App zip hash mismatch after bumping to beta5

   • Stage: build phase after app version bump
   • Symptom: fixed-output hash mismatch for the beta5 zip.
   • Root cause: hash updated after prefetch (zip content differs from the guessed hash).
   • Fix: update the fetchzip hash to the correct value.

8. Bundle metadata still labeled beta4

   • Stage: final build / packaging
   • Symptom: build output name still clawdis-2.0.0-beta4 even though app+gateway were beta5.
   • Root cause: clawdis-batteries.nix name and RFC notes were not bumped.
   • Fix: update bundle name and RFC references to beta5.