docs: boocode-lift-analysis, openspec change docs, codesight cache, deps

- Add boocode-lift-analysis.md: comprehensive 30-repo lift matrix across 25 domains
- Add openspec/ change docs: domain2-code-intelligence, domain3-multi-agent, impeccable-wave, streaming-codeblocks
- Update .gitignore: .impeccable/, .omo/, bun.lock, DESIGN.md, PRODUCT.md
- Update dependencies in package.json + pnpm-lock.yaml
- Update .codesight/ analysis cache

.codesight/middleware.md

@@ -7,6 +7,7 @@
 - turn-guard — `apps/coder/src/services/backends/turn-guard.ts`
 - get_middleware — `apps/server/src/services/tools/codecontext/get_middleware.ts`
 - authoring — `conductor/src/flows/authoring.ts`
+- spec — `openspec/changes/add-behavioral-engine/specs/audit-middleware/spec.md`
 
 ## custom
 - write_guard.test — `apps/coder/src/services/__tests__/write_guard.test.ts`