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-tauri/crates/psysonic-library/src/store.rs

@@ -8,7 +8,7 @@ use tauri::Manager;
 
 /// Current head of the embedded migrations. Bump each time a new
 /// `migrations/NNN_*.sql` is added.
-pub const LIBRARY_DB_SCHEMA_VERSION: i64 = 5;
+pub const LIBRARY_DB_SCHEMA_VERSION: i64 = 6;
 
 /// Lowest applied schema version the current code can advance from purely
 /// additively. If a DB carries a version below this, the breaking-bump hook
@@ -29,6 +29,7 @@ const MIGRATION_004_TRACK_TITLE_INDEX: &str =
     include_str!("../migrations/004_track_title_index.sql");
 const MIGRATION_005_TRACK_GENRE_YEAR_INDEXES: &str =
     include_str!("../migrations/005_track_genre_year_indexes.sql");
+const MIGRATION_006_PLAY_SESSION: &str = include_str!("../migrations/006_play_session.sql");
 
 /// Embedded migrations. Ordered ascending by `version`; the runner sorts
 /// defensively before applying so the source order can stay readable.
@@ -38,6 +39,7 @@ const MIGRATIONS: &[(i64, &str)] = &[
     (3, MIGRATION_003_TRACK_REMAP_INDEXES),
     (4, MIGRATION_004_TRACK_TITLE_INDEX),
     (5, MIGRATION_005_TRACK_GENRE_YEAR_INDEXES),
+    (6, MIGRATION_006_PLAY_SESSION),
 ];
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]