docs: create milestone v1.3 roadmap (4 phases)

.planning/STATE.md

@@ -2,12 +2,12 @@
 gsd_state_version: 1.0
 milestone: v1.3
 milestone_name: Research & Decision Tools
-status: requirements
-stopped_at: Defining requirements
+status: roadmap
+stopped_at: Roadmap created — ready to plan Phase 10
 last_updated: "2026-03-16T19:00:00.000Z"
-last_activity: 2026-03-16 -- Milestone v1.3 started
+last_activity: 2026-03-16 -- Roadmap created for v1.3 (4 phases, 13 requirements)
 progress:
-  total_phases: 0
+  total_phases: 4
   completed_phases: 0
   total_plans: 0
   completed_plans: 0
@@ -21,14 +21,35 @@ progress:
 See: .planning/PROJECT.md (updated 2026-03-16)
 
 **Core value:** Make it effortless to manage gear and plan new purchases -- see how a potential buy affects your total setup weight and cost before committing.
-**Current focus:** v1.3 Research & Decision Tools
+**Current focus:** v1.3 Research & Decision Tools — Phase 10 ready to plan
 
 ## Current Position
 
-Phase: Not started (defining requirements)
+Phase: 10 of 13 (Schema Foundation + Pros/Cons Fields)
 Plan: —
-Status: Defining requirements
-Last activity: 2026-03-16 — Milestone v1.3 started
+Status: Ready to plan
+Last activity: 2026-03-16 — Roadmap created for v1.3 milestone
+
+Progress: [░░░░░░░░░░] 0%
+
+## Performance Metrics
+
+**Velocity:**
+- Total plans completed: 0
+- Average duration: —
+- Total execution time: —
+
+**By Phase:**
+
+| Phase | Plans | Total | Avg/Plan |
+|-------|-------|-------|----------|
+| - | - | - | - |
+
+**Recent Trend:**
+- Last 5 plans: —
+- Trend: —
+
+*Updated after each plan completion*
 
 ## Accumulated Context
 
@@ -36,6 +57,11 @@ Last activity: 2026-03-16 — Milestone v1.3 started
 
 Cleared at milestone boundary. v1.2 decisions archived in milestones/v1.2-ROADMAP.md.
 
+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
+
 ### Pending Todos
 
 None active.
@@ -47,5 +73,5 @@ None active.
 ## Session Continuity
 
 Last session: 2026-03-16
-Stopped at: Defining requirements for v1.3
+Stopped at: Roadmap created — 4 phases, 13 requirements mapped, ready to plan Phase 10
 Resume file: None