stack/docs/scratchpads/41-plugin-host.md

Scratchpad — P5-001 Plugin Host

• Task: P5-001 / issue #41
• Branch: feat/p5-plugin-host
• Objective: add global NestJS plugin host module, wire Discord import, register active plugins from env, and attach to AppModule.
• TDD: skipped as optional for module wiring/integration work; relying on targeted typecheck/lint and module-level situational verification.
• Constraints: ESM .js imports, explicit @Inject(), follow existing gateway patterns, do not touch TASKS.md.

Progress Log

• 2026-03-13: session started in worktree; loading gateway/plugin package context.
• 2026-03-13: implemented initial plugin module, service, interface, and AppModule wiring; pending verification.
• 2026-03-13: added @mosaic/discord-plugin as a gateway workspace dependency and regenerated pnpm-lock.yaml.
• 2026-03-13: built gateway dependency chain so workspace packages exported dist/* for clean TypeScript resolution in this fresh worktree.
• 2026-03-13: verification complete.

Verification

• pnpm --filter @mosaic/gateway... build ✅
• pnpm --filter @mosaic/gateway typecheck ✅
• pnpm --filter @mosaic/gateway lint ✅
• pnpm format:check ✅
• pnpm typecheck ✅
• pnpm lint ✅

Review

• Automated review: ~/.config/mosaic/tools/codex/codex-code-review.sh --uncommitted
• Manual review: diff inspection of gateway plugin host changes
• Result: no blocker findings