v2.54.2

v2.54.2

Fixes a destructive-overwrite bug in the installer (#71): the MCP client setup
step could wipe a user's entire editor settings file instead of merging into it.

Fixed

• install.py silently destroyed existing client config files whose contents
  weren't strict JSON. read_json swallowed JSONDecodeError and returned
  {}, so the subsequent "merge" wrote a file containing only the
  davinci-resolve server entry — wiping themes, terminal env vars, LSP
  settings, keybindings, and everything else. Zed was the reported victim
  because its settings.json ships with // comments (JSONC), but the same
  latent risk existed for every supported client — VS Code and Continue
  also accept JSONC. The fix is centralized in the single read/merge path so
  all clients are covered:
  • read_json now best-effort strips JSONC // and /* */ comments and
    trailing commas (string-aware, so comment markers inside string values are
    preserved), letting commented configs merge cleanly instead of being lost.
  • When a config file exists but still can't be parsed, the installer
    refuses to overwrite it and tells the user to add the entry manually —
    rather than silently replacing their settings.

Validation

• Unit/static checks run: test_import, API parity audit, the three drift
  guards, full unit suite (1244 passed), npm pack --dry-run, git diff --check.
• New regression tests cover JSONC merge, plain-JSON merge, refuse-to-overwrite
  on unparseable files, fresh-file creation, and string-aware comment stripping.
• No Resolve behavior changed (installer only); live test not required.