GearBox/.planning/milestones/v1.0-phases/02-planning-threads/02-01-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
02-planning-threads	01	api	drizzle hono sqlite tdd threads candidates transactions	phase provides 01-foundation-and-collection items table, item.service.ts DI pattern, test helper, Hono route pattern	threads and threadCandidates database tables Thread service with full CRUD and transactional resolution Thread API routes at /api/threads with nested candidate endpoints Zod validation schemas for threads, candidates, and resolution Shared TypeScript types for Thread and ThreadCandidate	02-planning-threads 03-setups-and-dashboard	added patterns correlated SQL subqueries for aggregate metadata transactional resolution pattern	created modified src/server/services/thread.service.ts src/server/routes/threads.ts tests/services/thread.service.test.ts tests/routes/threads.test.ts src/db/schema.ts src/shared/schemas.ts src/shared/types.ts src/server/index.ts tests/helpers/db.ts	Drizzle sql template literals use raw table.column references in correlated subqueries (not interpolated column objects) Thread deletion collects candidate image filenames before cascade delete for filesystem cleanup Resolution validates categoryId existence and falls back to Uncategorized (id=1)	Correlated subquery pattern: raw SQL references in Drizzle sql`` for aggregate columns (candidateCount, minPrice, maxPrice) Transaction pattern: resolveThread atomically creates item + archives thread in single db.transaction() Nested route pattern: candidates CRUD mounted under /api/threads/:id/candidates	THRD-01 THRD-02 THRD-03 THRD-04	5min	2026-03-15

Phase 2 Plan 01: Thread Backend API Summary

Thread and candidate CRUD API with transactional resolution that atomically creates collection items from winning candidates using Drizzle transactions

Performance

• Duration: 5 min
• Started: 2026-03-15T10:34:32Z
• Completed: 2026-03-15T10:39:24Z
• Tasks: 2
• Files modified: 9

Accomplishments

• Full thread CRUD (create, read, update, delete) with cascading candidate cleanup
• Full candidate CRUD with all item-compatible fields (name, weight, price, category, notes, productUrl, image)
• Thread list returns aggregate metadata (candidateCount, minPriceCents, maxPriceCents) via correlated subqueries
• Transactional thread resolution: atomically creates collection item from candidate data and archives thread
• 33 tests (19 unit + 14 integration) all passing with zero regressions on existing 30 Phase 1 tests

Task Commits

Each task was committed atomically (TDD: RED then GREEN):

1. Task 1: Schema, shared schemas, test helper, and service layer
   • e146eea (test) - RED: failing tests for thread service
   • 1a8b91e (feat) - GREEN: implement thread service
2. Task 2: Thread API routes with integration tests
   • 37c9999 (test) - RED: failing integration tests for thread routes
   • add3e33 (feat) - GREEN: implement thread routes and mount

Files Created/Modified

• src/db/schema.ts - Added threads and threadCandidates table definitions
• src/shared/schemas.ts - Added Zod schemas for thread/candidate/resolve validation
• src/shared/types.ts - Added Thread, ThreadCandidate, and related input types
• src/server/services/thread.service.ts - Thread and candidate business logic with resolution transaction
• src/server/routes/threads.ts - Hono API routes for threads and candidates
• src/server/index.ts - Mounted threadRoutes at /api/threads
• tests/helpers/db.ts - Added threads and thread_candidates table creation
• tests/services/thread.service.test.ts - 19 unit tests for thread service
• tests/routes/threads.test.ts - 14 integration tests for thread API

Decisions Made

• Used raw SQL table.column references in Drizzle sql template literals for correlated subqueries (interpolated column objects bind as parameters, not column references)
• Thread deletion collects candidate image filenames before cascade delete to enable filesystem cleanup
• Resolution validates categoryId existence and falls back to Uncategorized (id=1) to handle deleted categories

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Fixed correlated subquery column reference in getAllThreads

• Found during: Task 1 (GREEN phase)
• Issue: Drizzle sql template literal with ${threads.id} binds as a parameter value, not a SQL column reference, causing COUNT to return 1 instead of correct count
• Fix: Changed to raw SQL reference threads.id instead of interpolated ${threads.id} in correlated subqueries
• Files modified: src/server/services/thread.service.ts
• Verification: candidateCount returns correct values in tests
• Committed in: 1a8b91e (Task 1 GREEN commit)

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Total deviations: 1 auto-fixed (1 bug) Impact on plan: Essential fix for correct aggregate metadata. No scope creep.

Issues Encountered

None beyond the subquery fix documented above.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Thread API fully operational, ready for frontend consumption in Plan 02
• All endpoints follow established Phase 1 patterns (DI, Hono context, Zod validation)
• Test infrastructure updated to support threads in all future tests

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Phase: 02-planning-threads Completed: 2026-03-15

Self-Check: PASSED

All 8 files verified present. All 4 commit hashes verified in git log.