Barrel Cleanup: @ocom/service-mongoose

[nnoce14]

Goal: Remove barrel files and star re-export patterns from @ocom/service-mongoose. Refactor imports to explicit module paths. Add package-specific Biome config override to error level. No need to wait for full barrel file inventory—resolve conflicts as PRs merge.

Scope: packages/ocom/service-mongoose

Tasks:

• Audit index.ts and re-export patterns for pure barrels
• Remove pure barrel files
• Update imports referencing barrels
• Add Biome error override for this package
• Run lint/build/tests (pnpm run verify)

Success Criteria:

• No barrel files/star re-exports in @ocom/service-mongoose
• Biome config error-level for these rules (scoped)
• Everything builds, lints, passes verify

Checklist:

• Audit barrels
• Remove barrels
• Refactor imports
• Add Biome override
• Run verify