chore: archive v1.2 Collection Power-Ups milestone

Archive roadmap and requirements to milestones/, evolve PROJECT.md
with validated requirements, update retrospective, and reorganize
ROADMAP.md with milestone groupings.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.planning/PROJECT.md

@@ -2,7 +2,7 @@
 
 ## What This Is
 
-A web-based gear management and purchase planning app. Users catalog their gear collections (bikepacking, sim racing, or any hobby), track weight, price, and source details, and use planning threads to research and compare new purchases. Named setups let users compose loadouts from their collection with live weight/cost totals. Built as a single-user app with a clean, minimalist interface.
+A web-based gear management and purchase planning app. Users catalog their gear collections (bikepacking, sim racing, or any hobby), track weight, price, and source details, search and filter by name or category, and use planning threads to research and compare new purchases with status tracking. Named setups let users compose loadouts with weight classification (base/worn/consumable), donut chart visualization, and live totals in selectable units. Built as a single-user app with a clean, minimalist interface.
 
 ## Core Value
 
@@ -27,18 +27,22 @@ Make it effortless to manage gear and plan new purchases — see how a potential
 - ✓ Hero image upload area with preview and click-to-upload — v1.1
 - ✓ Lucide icon picker for categories (119 curated icons, 8 groups) — v1.1
 - ✓ Automatic emoji-to-Lucide icon migration for existing categories — v1.1
+- ✓ Search items by name with instant filtering — v1.2
+- ✓ Filter collection items by category with icon-aware dropdown — v1.2
+- ✓ Combined text search with category filter and result count — v1.2
+- ✓ One-action filter clear — v1.2
+- ✓ Weight unit selection (g, oz, lb, kg) with persistence — v1.2
+- ✓ All weight displays respect selected unit across entire app — v1.2
+- ✓ Per-setup item classification (base weight, worn, consumable) — v1.2
+- ✓ Setup weight subtotals by classification — v1.2
+- ✓ Donut chart visualization with category/classification toggle — v1.2
+- ✓ Chart hover tooltips with weight and percentage — v1.2
+- ✓ Candidate status tracking (researching/ordered/arrived) — v1.2
+- ✓ Planning category filter with Lucide icons — v1.2
 
-### Active — v1.2 Collection Power-Ups
+### Active
 
-**Goal:** Make core gear management significantly more useful as collections grow — better search, proper weight classification, richer planning threads.
-
-**Target features:**
-- Search items by name and filter by category
-- Classify items as base weight, worn, or consumable per setup
-- Weight distribution visualization (chart by category/classification)
-- Candidate status tracking (researching → ordered → arrived)
-- Weight unit selection (g, oz, lb, kg)
-- Planning category filter with icon-aware dropdown
+(No active milestone — use `/gsd:new-milestone` to start next)
 
 ### Future
 
@@ -61,10 +65,11 @@ Make it effortless to manage gear and plan new purchases — see how a potential
 
 ## Context
 
-Shipped v1.1 with 6,134 LOC TypeScript.
-Tech stack: React 19, Hono, Drizzle ORM, SQLite, TanStack Router/Query, Tailwind CSS v4, Lucide React, all on Bun.
+Shipped v1.2 with 7,310 LOC TypeScript.
+Tech stack: React 19, Hono, Drizzle ORM, SQLite, TanStack Router/Query, Tailwind CSS v4, Lucide React, Recharts, all on Bun.
 Primary use case is bikepacking gear but data model is hobby-agnostic.
 Replaces spreadsheet-based gear tracking workflow.
+121 tests (service-level and route-level integration).
 
 ## Constraints
 
@@ -96,6 +101,15 @@ Replaces spreadsheet-based gear tracking workflow.
 | Hero image area at top of forms | Image-first UX, 4:3 aspect ratio consistent with cards | ✓ Good |
 | Emoji-to-icon automatic migration | One-time schema rename + data conversion via Drizzle migration | ✓ Good |
 | ALTER TABLE RENAME COLUMN for SQLite | Simpler than table recreation for column rename | ✓ Good |
+| Weight conversion precision: g=0dp, oz=1dp, lb=2dp, kg=2dp | Matches common usage conventions | ✓ Good |
+| Unit toggle in TotalsBar (not settings page) | Visible, quick access for frequent switching | ✓ Good |
+| CategoryFilterDropdown separate from CategoryPicker | Filter vs form concerns are different | ✓ Good |
+| No debounce on search input | Collection under 1000 items, instant feedback | ✓ Good |
+| StatusBadge popup with click-outside dismiss | Consistent with CategoryPicker pattern | ✓ Good |
+| Classification on setupItems join table | Same item can have different roles per setup | ✓ Good |
+| Click-to-cycle for ClassificationBadge | Only 3 values, simpler than popup | ✓ Good |
+| Classification-preserving sync via Map | Save metadata before delete, restore after re-insert | ✓ Good |
+| Recharts for charting | Mature React chart library, composable API | ✓ Good |
 
 ---
-*Last updated: 2026-03-16 after v1.2 milestone start*
+*Last updated: 2026-03-16 after v1.2 milestone*