v5.5.1 — fresh-install fix for npm's blocked install scripts

Fixed

• Fixed the fresh-install dead end under npm ≥ 11.5, which blocks dependency install scripts by default and leaves better-sqlite3 without its native binding (the CLI then fails at first database open):
  • waykeep doctor now recognizes the missing-addon state and prints the working one-shot fix:

    npm install -g waykeep --allow-scripts=better-sqlite3,onnxruntime-node,sharp,protobufjs

  • README and docs/INSTALL.md document the fix directly under the install command — note that npm's own suggested fix command omits the package name and errors.

No schema, hook, or behavior changes — a safe drop-in patch over 5.5.0.

Full Changelog: v5.5.0...v5.5.1