docs: create milestone v1.2 roadmap (3 phases)

.planning/STATE.md

@@ -2,12 +2,12 @@
 gsd_state_version: 1.0
 milestone: v1.2
 milestone_name: Collection Power-Ups
-status: defining_requirements
-stopped_at: Defining requirements for v1.2
+status: ready_to_plan
+stopped_at: Roadmap created for v1.2
 last_updated: "2026-03-16T00:00:00.000Z"
-last_activity: 2026-03-16 -- Milestone v1.2 started
+last_activity: 2026-03-16 -- Roadmap created with 3 phases (7-9)
 progress:
-  total_phases: 0
+  total_phases: 3
   completed_phases: 0
   total_plans: 0
   completed_plans: 0
@@ -21,14 +21,14 @@ 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:** v1.2 Collection Power-Ups
+**Current focus:** Phase 7 - Weight Unit Selection
 
 ## Current Position
 
-Phase: Not started (defining requirements)
-Plan: —
-Status: Defining requirements
-Last activity: 2026-03-16 — Milestone v1.2 started
+Phase: 7 of 9 (Weight Unit Selection)
+Plan: --
+Status: Ready to plan
+Last activity: 2026-03-16 -- Roadmap created for v1.2
 
 Progress: [░░░░░░░░░░] 0%
 
@@ -36,11 +36,16 @@ Progress: [░░░░░░░░░░] 0%
 
 ### Decisions
 
-(Full decision log archived in PROJECT.md Key Decisions table)
+(Full decision log in PROJECT.md Key Decisions table)
+
+- Coarse granularity: 19 requirements compressed into 3 phases (7-9)
+- Weight unit selection must be Phase 7 (formatWeight refactor touches all weight displays)
+- Classification belongs on setup_items join table, NOT items table
+- Candidate status and classification schema migrations in separate phases (sequential)
 
 ### Pending Todos
 
-- Replace planning category filter select with icon-aware dropdown (ui) — folded into v1.2
+- Replace planning category filter select with icon-aware dropdown (ui) -- covered by PLAN-01 in Phase 8
 
 ### Blockers/Concerns
 
@@ -49,5 +54,5 @@ None active.
 ## Session Continuity
 
 Last session: 2026-03-16T00:00:00.000Z
-Stopped at: Defining requirements for v1.2
+Stopped at: Roadmap created for v1.2
 Resume file: None