docs(quick-260406-j44): complete dev seed script summary

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/quick/260406-j44-comprehensive-dev-seed-script-for-bikepa/260406-j44-SUMMARY.md

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+---
+phase: quick
+plan: 260406-j44
+subsystem: database
+tags: [seed-data, dev-tooling, bikepacking]
+dependency_graph:
+  requires: [src/db/schema.ts, src/db/seed-global-items.ts, src/db/index.ts]
+  provides: [src/db/dev-seed.ts, src/db/dev-seed-data.ts, db:seed:dev script]
+  affects: [local development workflow]
+tech_stack:
+  added: []
+  patterns: [idempotent seed script, FK-ordered insertion, data/logic separation]
+key_files:
+  created: [src/db/dev-seed-data.ts, src/db/dev-seed.ts]
+  modified: [package.json]
+decisions:
+  - Separated data constants (dev-seed-data.ts) from runner logic (dev-seed.ts) for maintainability
+  - Used logtoSub="dev-user-seed" as idempotency sentinel — single check gates entire script
+  - Global items are deduplicated by brand+model to avoid conflicts with existing seed-global-items.json data
+  - Tag assignments skip existing links to stay idempotent at the row level
+metrics:
+  duration: ~4m
+  completed: 2026-04-06
+  tasks_completed: 2
+  tasks_total: 2
+  files_created: 2
+  files_modified: 1
+---
+
+# Quick Task 260406-j44: Comprehensive Dev Seed Script Summary
+
+Idempotent dev seed script populating PostgreSQL with 36 global items, 30 tag assignments, 10 categories, 17 user items (10 catalog-linked + 7 standalone), 3 threads with 7 candidates, 2 setups, and user settings for realistic bikepacking gear development.
+
+## Commits
+
+| # | Hash | Message |
+|---|------|---------|
+| 1 | 24f3a8a | feat(quick-260406-j44): add dev seed data constants for bikepacking gear |
+| 2 | eb7f37f | feat(quick-260406-j44): add idempotent dev seed runner and db:seed:dev script |
+
+## Task Details
+
+### Task 1: Create seed data constants
+Created `src/db/dev-seed-data.ts` with typed constant arrays covering all entity types. Data uses real bikepacking gear brands (Revelate Designs, Zpacks, Enlightened Equipment, Nitecore, etc.) with accurate weights and prices in cents. Includes a `categoryDisplayName()` helper for mapping seed category slugs to display names.
+
+### Task 2: Create seed runner and wire npm script
+Created `src/db/dev-seed.ts` with FK-ordered insertion (users -> categories -> global items -> tags -> items -> threads -> candidates -> setups -> setup_items -> settings). Idempotency check queries for `logtoSub = "dev-user-seed"`. Global items are deduplicated against existing `seed-global-items.json` data by brand+model. Added `db:seed:dev` script to package.json.
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 1 - Bug] Added undefined guards on .returning() results**
+- **Found during:** Task 2 type-check
+- **Issue:** TypeScript strict mode flagged `.returning()` destructured results as possibly undefined
+- **Fix:** Added `if (!result) throw new Error(...)` guards after each `.returning()` call
+- **Files modified:** src/db/dev-seed.ts
+- **Commit:** eb7f37f
+
+## Known Stubs
+
+None — all data is fully wired with valid FK references.
+
+## Self-Check: PASSED