docs: add Phase 21 (Item & Catalog Detail Pages), renumber 21→22, 22→23

.planning/ROADMAP.md

@@ -6,7 +6,7 @@
 - ✅ **v1.1 Fixes & Polish** — Phases 4-6 (shipped 2026-03-15)
 - ✅ **v1.2 Collection Power-Ups** — Phases 7-9 (shipped 2026-03-16)
 - 🚧 **v1.3 Research & Decision Tools** — Phases 10-13 (in progress)
-- 📋 **v2.0 Platform Foundation** <20><> Phases 14-22 (planned)
+- 📋 **v2.0 Platform Foundation** <20><> Phases 14-23 (planned)
 
 ## Phases
 
@@ -57,8 +57,9 @@
 - [x] **Phase 18: Global Items & Public Profiles** — Global item catalog, user profiles, and public setup sharing (completed 2026-04-05)
 - [x] **Phase 19: Reference Item Model & Tags Schema** — Collection items as references to global catalog, tag system for discovery (completed 2026-04-05)
 - [x] **Phase 20: FAB & Full-Screen Catalog Search** — Global FAB with mini menu, full-screen catalog search with tag filtering (completed 2026-04-06)
-- [ ] **Phase 21: Add-from-Catalog & Thread Integration** — Add catalog items to collection and threads, resolution creates reference items
-- [ ] **Phase 22: Manual Entry Fallback** — Manual add for items not in catalog, non-functional submission prompt
+- [ ] **Phase 21: Item & Catalog Detail Pages** — Full detail pages for collection items and catalog entries, replacing slide-out panels
+- [ ] **Phase 22: Add-from-Catalog & Thread Integration** — Add catalog items to collection and threads, resolution creates reference items
+- [ ] **Phase 23: Manual Entry Fallback** — Manual add for items not in catalog, non-functional submission prompt
 
 ## Phase Details
 
@@ -206,9 +207,22 @@ Plans:
 - [x] 20-02-PLAN.md — FabMenu component, CatalogSearchOverlay component, root layout wiring
 **UI hint**: yes
 
-### Phase 21: Add-from-Catalog & Thread Integration
-**Goal**: Users can add catalog items to their collection and to threads directly from search
+### Phase 21: Item & Catalog Detail Pages
+**Goal**: Collection items and catalog entries have full detail pages, replacing the slide-out panel pattern
 **Depends on**: Phase 20
+**Requirements**: DETAIL-01, DETAIL-02, DETAIL-03, DETAIL-04, DETAIL-05
+**Success Criteria** (what must be TRUE):
+  1. Clicking a collection item card navigates to `/items/:id` showing full item details with edit toggle
+  2. Clicking a catalog search result card navigates to `/global-items/:id` showing public catalog details with "Add to Collection" button
+  3. Thread candidates navigate to detail pages instead of opening slide-out panels
+  4. Item slide-out panel and candidate slide-out panel are removed from the root layout
+  5. No visual distinction between reference items and standalone items — same layout, some fields may be empty
+**Plans**: TBD
+**UI hint**: yes
+
+### Phase 22: Add-from-Catalog & Thread Integration
+**Goal**: Users can add catalog items to their collection and to threads directly from search
+**Depends on**: Phase 21
 **Requirements**: CATFLOW-03, CATFLOW-05, CATFLOW-06
 **Success Criteria** (what must be TRUE):
   1. User can add a catalog item to collection with one confirmation step (category picker + notes)
@@ -217,9 +231,9 @@ Plans:
 **Plans**: TBD
 **UI hint**: yes
 
-### Phase 22: Manual Entry Fallback
+### Phase 23: Manual Entry Fallback
 **Goal**: Users can still add items not found in the catalog via manual entry
-**Depends on**: Phase 21
+**Depends on**: Phase 22
 **Requirements**: CATFLOW-07, CATFLOW-08
 **Success Criteria** (what must be TRUE):
   1. User can fall back to manual entry from catalog search via "Add Manually" link
@@ -252,5 +266,6 @@ Plans:
 | 18. Global Items & Public Profiles | v2.0 | 4/5 | Complete    | 2026-04-05 |
 | 19. Reference Item Model & Tags Schema | v2.0 | 3/3 | Complete    | 2026-04-05 |
 | 20. FAB & Full-Screen Catalog Search | v2.0 | 2/2 | Complete    | 2026-04-06 |
-| 21. Add-from-Catalog & Thread Integration | v2.0 | 0/? | Not started | - |
-| 22. Manual Entry Fallback | v2.0 | 0/? | Not started | - |
+| 21. Item & Catalog Detail Pages | v2.0 | 0/? | Not started | - |
+| 22. Add-from-Catalog & Thread Integration | v2.0 | 0/? | Not started | - |
+| 23. Manual Entry Fallback | v2.0 | 0/? | Not started | - |