docs(02-03): complete Advance Top N plan — SUMMARY, STATE, ROADMAP updated

- Phase 2 complete: all 3 plans done (DASH-01 through DASH-07 fulfilled)
- REQUIREMENTS.md: marked DASH-05, DASH-06, DASH-07 complete
- ROADMAP.md: Phase 2 updated to Complete (3/3 plans)
- STATE.md: advanced to Phase 2 complete, added 3 new decisions

.planning/REQUIREMENTS.md

@@ -23,12 +23,12 @@ Requirements for this milestone. Each maps to roadmap phases.
 ### Ranking Dashboard
 
 - [x] **DASH-01**: Admin sees ranked project list per category on the round detail page (new tab)
-- [ ] **DASH-02**: Admin can drag-and-drop to reorder projects in the ranked list
-- [ ] **DASH-03**: Drag-and-drop state is isolated from server state to prevent snap-back race conditions
-- [ ] **DASH-04**: Admin can click a project to see full evaluation data in a side panel (scores, votes, juror comments, pass/fail)
-- [ ] **DASH-05**: Admin can select "Advance top X" to promote the top N projects to the next round
-- [ ] **DASH-06**: Admin can batch-reject remaining non-advanced projects
-- [ ] **DASH-07**: Advance button is disabled until any pending reorder mutations settle
+- [x] **DASH-02**: Admin can drag-and-drop to reorder projects in the ranked list
+- [x] **DASH-03**: Drag-and-drop state is isolated from server state to prevent snap-back race conditions
+- [x] **DASH-04**: Admin can click a project to see full evaluation data in a side panel (scores, votes, juror comments, pass/fail)
+- [x] **DASH-05**: Admin can select "Advance top X" to promote the top N projects to the next round
+- [x] **DASH-06**: Admin can batch-reject remaining non-advanced projects
+- [x] **DASH-07**: Advance button is disabled until any pending reorder mutations settle
 
 ### Email & Notifications
 
@@ -98,12 +98,12 @@ Which phases cover which requirements. Updated during roadmap creation.
 | RANK-09 | Phase 1 | Complete |
 | RANK-10 | Phase 1 | Complete |
 | DASH-01 | Phase 2 | Complete |
-| DASH-02 | Phase 2 | Pending |
-| DASH-03 | Phase 2 | Pending |
-| DASH-04 | Phase 2 | Pending |
-| DASH-05 | Phase 2 | Pending |
-| DASH-06 | Phase 2 | Pending |
-| DASH-07 | Phase 2 | Pending |
+| DASH-02 | Phase 2 | Complete |
+| DASH-03 | Phase 2 | Complete |
+| DASH-04 | Phase 2 | Complete |
+| DASH-05 | Phase 2 | Complete |
+| DASH-06 | Phase 2 | Complete |
+| DASH-07 | Phase 2 | Complete |
 | MAIL-01 | Phase 3 | Pending |
 | MAIL-02 | Phase 3 | Pending |
 | MAIL-03 | Phase 3 | Pending |