* chore(nix): improve flake with dynamic version and source filtering
- Read version dynamically from package.json instead of hardcoding
- Add lib.fileset source filtering to exclude node_modules and build artifacts
- Update update-flake.sh to support dynamic version pattern
- Add hash change detection to skip unnecessary rebuilds
- Improve error handling with automatic rollback on failure
- Update specs to reflect dynamic version behavior
* chore(ci): bump Nix actions to latest versions
- nix-installer-action: v13 → v21
- magic-nix-cache-action: v8 → v13
- Update validation message for unchanged flake.nix
* chore: add changeset for Nix improvements
* fix(nix): make update-flake.sh portable to macOS
- Fix grep pattern on line 37 to include opening parenthesis
- Replace GNU grep -oP with portable sed alternatives (lines 53, 68, 70)
- Ensures script works on both Linux and macOS (BSD sed/grep)
* fix(nix): properly check build verification exit status
Fix logic bug where build failures were incorrectly reported as success.
The script now:
- Captures build exit code and output separately
- Fails fast if build returns non-zero exit code
- Only checks for 'dirty tree' warning if build succeeded
This addresses CodeRabbit review feedback on line 101-107.
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Co-authored-by: Tabish Bidiwale <30385142+TabishB@users.noreply.github.com>
