feat(player-stats): local listening history tab with heatmap and summaries (#849)

* feat(player-stats): local listening history tab with heatmap and summaries

Record play sessions in library.sqlite when the library index is enabled,
add Rust read APIs and Tauri commands for year/day aggregates, and ship the
Player stats UI with session clustering, event-driven live refresh, and a
notice when some servers are excluded from indexing.

* test(player-stats): split play_session repo and expand test coverage

Move the repository into play_session/ (completion, cluster, integration tests),
add remap/purge/FK coverage in Rust, and cover ingestion gates plus live-refresh
hooks on the frontend per spec v0.3.

* docs(release): CHANGELOG and credits for player stats (PR #849)

* fix(player-stats): satisfy tsc and clippy CI gates

Use InternetRadioStation field names in the radio skip test and replace
manual month/day range checks with RangeInclusive::contains.

src/store/playSessionRecorded.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, it, vi } from 'vitest';
+import { emitPlaySessionRecorded, onPlaySessionRecorded } from './playSessionRecorded';
+
+describe('playSessionRecorded', () => {
+  it('notifies subscribers when a listen is persisted', () => {
+    const listener = vi.fn();
+    const unsub = onPlaySessionRecorded(listener);
+    const detail = { serverId: 's1', trackId: 't1', startedAtMs: 123 };
+    emitPlaySessionRecorded(detail);
+    expect(listener).toHaveBeenCalledWith(detail);
+    unsub();
+    listener.mockClear();
+    emitPlaySessionRecorded(detail);
+    expect(listener).not.toHaveBeenCalled();
+  });
+});