docs(10-01): complete pros/cons schema foundation plan

- Add 10-01-SUMMARY.md with TDD execution results
- STATE.md: updated metrics, decisions, session, progress
- ROADMAP.md: phase 10 marked complete (1/1 plans)
- REQUIREMENTS.md: RANK-03 marked complete

.planning/STATE.md

@@ -2,15 +2,15 @@
 gsd_state_version: 1.0
 milestone: v1.3
 milestone_name: Research & Decision Tools
-status: roadmap
-stopped_at: Roadmap created — ready to plan Phase 10
-last_updated: "2026-03-16T19:00:00.000Z"
-last_activity: 2026-03-16 -- Roadmap created for v1.3 (4 phases, 13 requirements)
+status: planning
+stopped_at: Completed 10-schema-foundation-pros-cons-fields/10-01-PLAN.md
+last_updated: "2026-03-16T20:38:21.715Z"
+last_activity: 2026-03-16 — Roadmap created for v1.3 milestone
 progress:
   total_phases: 4
-  completed_phases: 0
-  total_plans: 0
-  completed_plans: 0
+  completed_phases: 1
+  total_plans: 1
+  completed_plans: 1
   percent: 0
 ---
 
@@ -50,6 +50,7 @@ Progress: [░░░░░░░░░░] 0%
 - Trend: —
 
 *Updated after each plan completion*
+| Phase 10-schema-foundation-pros-cons-fields P01 | 6min | 2 tasks | 9 files |
 
 ## Accumulated Context
 
@@ -61,6 +62,9 @@ Key v1.3 research findings (see research/SUMMARY.md):
 - framer-motion@12.37.0 (already installed) handles drag-to-reorder via Reorder component — no new deps
 - sort_order must use REAL (float) type, not INTEGER, to avoid bulk writes on every drag
 - Impact preview must distinguish add-mode vs replace-mode by category match — pure addition misleads
+- [Phase 10-schema-foundation-pros-cons-fields]: Empty string for pros/cons stored as-is (not normalized to null); test accepts either empty string or null as cleared state
+- [Phase 10-schema-foundation-pros-cons-fields]: Pros/Cons badge uses purple color to distinguish from weight (blue), price (green), category (gray), and status badges
+- [Phase 10-schema-foundation-pros-cons-fields]: Field-addition ladder pattern: schema -> migration -> test helper -> service -> Zod -> types -> hook -> form -> card indicator
 
 ### Pending Todos
 
@@ -72,6 +76,6 @@ None active.
 
 ## Session Continuity
 
-Last session: 2026-03-16
-Stopped at: Roadmap created — 4 phases, 13 requirements mapped, ready to plan Phase 10
+Last session: 2026-03-16T20:38:21.713Z
+Stopped at: Completed 10-schema-foundation-pros-cons-fields/10-01-PLAN.md
 Resume file: None