diff --git a/.planning/STATE.md b/.planning/STATE.md
index e5e51a0..83c0e3d 100644
--- a/.planning/STATE.md
+++ b/.planning/STATE.md
@@ -2,10 +2,10 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: in-progress
-last_updated: "2026-03-05T01:58:48Z"
+status: completed
+last_updated: "2026-03-05T02:04:09.789Z"
 progress:
-  total_phases: 8
+  total_phases: 7
   completed_phases: 7
   total_plans: 13
   completed_plans: 13
@@ -23,7 +23,7 @@ progress:
 
 **Phase:** 07-backend-performance (complete)
 **Plan:** 2/2 (all complete)
-**Status:** Phase 7 complete
+**Status:** Milestone complete
 
 ```
 Phase Progress: [#######.] 7/8 phases — Phase 7: 2/2 plans complete ✓
diff --git a/.planning/phases/07-backend-performance/07-VERIFICATION.md b/.planning/phases/07-backend-performance/07-VERIFICATION.md
new file mode 100644
index 0000000..cd31d70
--- /dev/null
+++ b/.planning/phases/07-backend-performance/07-VERIFICATION.md
@@ -0,0 +1,97 @@
+---
+phase: 07-backend-performance
+verified: 2026-03-04T22:45:00Z
+status: passed
+score: 9/9 must-haves verified
+---
+
+# Phase 7: Backend Performance Verification Report
+
+**Phase Goal:** Queue mutations and library loading are fast — single-track queue changes are O(1) instead of O(n), and the library doesn't block startup with a full data fetch
+**Verified:** 2026-03-04T22:45:00Z
+**Status:** passed
+**Re-verification:** No — initial verification
+
+## Goal Achievement
+
+### Observable Truths
+
+| # | Truth | Status | Evidence |
+|---|-------|--------|----------|
+| 1 | AddTrack persists a single INSERT + position shift instead of DELETE ALL + batch INSERT | ✓ VERIFIED | `AddTrack` calls `q.persistAddTrack(track)` (queue.go:368) which does a single `InsertQueueTrack` (persistence.go:17-23). No `commitMutation` or `persistTracks` call. |
+| 2 | RemoveTrack persists a single DELETE + position shift instead of DELETE ALL + batch INSERT | ✓ VERIFIED | `RemoveTrack` calls `q.persistRemoveTrack(position)` (queue.go:774) which does `RemoveQueueTrackByPosition` + `ShiftQueuePositionsDown` in a transaction (persistence.go:146-192). No `commitMutation` or `persistTracks` call. |
+| 3 | InsertNext/InsertNextTracks/InsertTracksAt persist incremental INSERTs + position shift instead of DELETE ALL + batch INSERT | ✓ VERIFIED | `InsertNext` calls `q.persistInsertTracks([]Track{track}, insertPos)` (queue.go:526), `InsertNextTracks` calls `q.persistInsertTracks(newTracks, insertPos)` (queue.go:476), `InsertTracksAt` calls `q.persistInsertTracks(newTracks, index)` (queue.go:593). `persistInsertTracks` does variable-N position shift + batch INSERT in a transaction (persistence.go:81-141). |
+| 4 | SetQueue Phase 2 skips file paths already resolved in Phase 1 | ✓ VERIFIED | `resolveRemainingTracks` accepts `phase1Meta map[string]trackMeta` (queue.go:267), filters `unresolvedPaths` by excluding keys in `phase1Meta` (queue.go:270-276), calls `lookupTrackMetaBatch(unresolvedPaths)` only for unresolved paths (queue.go:279), then merges Phase 1 results back in (queue.go:282-284). |
+| 5 | Bulk operations (SetQueue, Clear, MoveQueueTracks) still use the full DELETE ALL + batch INSERT pattern | ✓ VERIFIED | `resolveRemainingTracks` calls `q.commitMutation(false)` (queue.go:330), `MoveQueueTracks` calls `q.commitMutation(true)` (queue.go:737), `Clear` calls `q.commitMutation(false)` (queue.go:1102), `RemoveTracks` calls `q.persistTracks()` (queue.go:849). All bulk paths preserved. |
+| 6 | All existing queue persistence roundtrip tests pass | ✓ VERIFIED | `go test ./queue/... -race -count=1` passes all 29 tests including persistence roundtrip tests (TestSaveState_RestoreState_Roundtrip, TestSaveState_RestoreState_EmptyQueue, etc.) |
+| 7 | LibraryStore constructor does NOT call eagerFetch() — app shell renders instantly | ✓ VERIFIED | Constructor calls `this.deferEagerFetch()` (library-store.ts:56) instead of `this.eagerFetch()` directly. No direct `eagerFetch()` call in constructor. |
+| 8 | After DOM is ready, eagerFetch() is called — all 4 data types still loaded eagerly | ✓ VERIFIED | `deferEagerFetch()` listens for `DOMContentLoaded` event (library-store.ts:70-76) or calls immediately if DOM already parsed (library-store.ts:80). `eagerFetch()` still calls all 4 getters: `getTracks`, `getAlbums`, `getArtists`, `getGenres` (library-store.ts:325-330). |
+| 9 | Post-scan invalidation still calls eagerFetch() to re-fetch everything | ✓ VERIFIED | `invalidate()` method calls `this.eagerFetch()` directly (library-store.ts:315), not deferred. Scan complete event listener calls `this.invalidate()` (library-store.ts:51-53). |
+
+**Score:** 9/9 truths verified
+
+### Required Artifacts
+
+| Artifact | Expected | Status | Details |
+|----------|----------|--------|---------|
+| `backend/queue/persistence.go` | Incremental persist helpers: persistAddTrack, persistAddTracks, persistInsertTracks, persistRemoveTrack | ✓ VERIFIED | All 4 helpers present (lines 16, 30, 81, 146). Contains `func (q *Queue) persistAddTrack` as required. 475 lines, substantive implementations with transactions, error handling, and SAFETY comments. |
+| `backend/queue/queue.go` | Updated mutations using incremental persistence; resolveRemainingTracks with exclusion set | ✓ VERIFIED | AddTrack (line 368), AddTracks (line 418), InsertNext (line 526), InsertNextTracks (line 476), InsertTracksAt (line 593), RemoveTrack (line 774) all use incremental persist. resolveRemainingTracks accepts `phase1Meta` and filters with exclusion set (lines 267-284). Contains `persistAddTrack` as required. |
+| `frontend/src/store/library-store.ts` | Deferred eagerFetch via DOMContentLoaded event | ✓ VERIFIED | Contains `deferEagerFetch()` method with `DOMContentLoaded` listener (line 68-82). Constructor calls `deferEagerFetch()` (line 56) instead of `eagerFetch()`. Contains `EventsOn` as required. |
+
+### Key Link Verification
+
+| From | To | Via | Status | Details |
+|------|----|-----|--------|---------|
+| queue.go AddTrack | persistence.go persistAddTrack | direct method call | ✓ WIRED | `q.persistAddTrack(track)` at queue.go:368, replaces commitMutation |
+| queue.go RemoveTrack | persistence.go persistRemoveTrack | direct method call | ✓ WIRED | `q.persistRemoveTrack(position)` at queue.go:774, replaces commitMutation |
+| queue.go resolveRemainingTracks | queue.go lookupTrackMetaBatch | exclusion set filtering | ✓ WIRED | `phase1Meta` parameter (queue.go:267), exclusion filter (queue.go:270-276), `lookupTrackMetaBatch(unresolvedPaths)` (queue.go:279) |
+| library-store.ts constructor | library-store.ts eagerFetch | DOMContentLoaded event | ✓ WIRED | `this.deferEagerFetch()` (line 56) → `DOMContentLoaded` listener → `this.eagerFetch()` (lines 68-82) |
+
+### Requirements Coverage
+
+| Requirement | Source Plan | Description | Status | Evidence |
+|-------------|------------|-------------|--------|----------|
+| PERF-01 | 07-01-PLAN | Queue single-track mutations use incremental INSERT/DELETE instead of full table rewrite | ✓ SATISFIED | AddTrack→persistAddTrack, RemoveTrack→persistRemoveTrack, InsertNext/InsertNextTracks/InsertTracksAt→persistInsertTracks. No commitMutation/persistTracks for single-track ops. |
+| PERF-02 | 07-01-PLAN | SetQueue Phase 2 skips file paths already resolved in Phase 1 | ✓ SATISFIED | resolveRemainingTracks filters unresolvedPaths via phase1Meta exclusion set, calls lookupTrackMetaBatch only for unresolved paths, merges Phase 1 results back. |
+| PERF-03 | 07-02-PLAN | Library store constructor no longer calls eagerFetch(); data loads after DOM ready | ✓ SATISFIED | Constructor calls deferEagerFetch() which uses DOMContentLoaded event. eagerFetch() loads all 4 data types eagerly once triggered. invalidate() still calls eagerFetch() directly. |
+
+No orphaned requirements — all 3 requirements (PERF-01, PERF-02, PERF-03) from REQUIREMENTS.md traceability table for Phase 7 are accounted for by plans 07-01 and 07-02.
+
+### Anti-Patterns Found
+
+| File | Line | Pattern | Severity | Impact |
+|------|------|---------|----------|--------|
+| — | — | No TODO/FIXME/PLACEHOLDER found | — | — |
+| — | — | No empty implementations found | — | — |
+| — | — | No stub patterns found | — | — |
+
+Clean — no anti-patterns detected in any modified files.
+
+### Human Verification Required
+
+#### 1. App Shell Renders Before Data Loads
+
+**Test:** Launch the app and observe whether the UI shell appears before library data populates the views
+**Expected:** App shell (sidebar, toolbar, empty views) renders immediately; then tracks/albums/artists/genres populate after a brief delay
+**Why human:** Visual render timing cannot be verified programmatically — requires observing paint order
+
+#### 2. Queue Operations Feel Fast on Large Queues
+
+**Test:** Build a queue with 500+ tracks, then add/remove individual tracks
+**Expected:** Single-track add/remove completes noticeably faster than before (no perceptible delay from full table rewrite)
+**Why human:** Performance improvement is a feel/perception check, not a binary pass/fail
+
+#### 3. Post-Scan Library Refresh Still Works
+
+**Test:** Trigger a library scan while the app is running, then verify all views refresh with new data
+**Expected:** After scan completes, all 4 views (tracks, albums, artists, genres) show updated data
+**Why human:** End-to-end behavior involving backend scan + event emission + frontend refresh cycle
+
+### Gaps Summary
+
+No gaps found. All 9 observable truths verified, all 3 artifacts substantive and wired, all 4 key links connected, all 3 requirements satisfied. Backend builds, all 29 queue tests pass with `-race`, and all 3 commits exist in git history.
+
+---
+
+_Verified: 2026-03-04T22:45:00Z_
+_Verifier: Claude (gsd-verifier)_