feat(player,queue): loudness strip controls and normalization readout fixes

- Add Tauri command to delete loudness_cache rows for a track and helpers in AnalysisCache.
- Queue tech strip: click dB to reseed loudness; LUFS target picker via body portal; metric styling aligned with strip (no link chrome).
- Player store: reseed clears local cache and replays analysis seed; show loudness dB from SQLite cache when live state is still null; allow first numeric normalization-state update through the short duplicate filter.
- audio_update_replay_gain: resolve loudness from the requested gain when playback URL is not pinned yet.

src-tauri/src/lib.rs

@@ -1250,6 +1250,14 @@ fn analysis_get_loudness_for_track(
     }}))
 }
 
+#[tauri::command]
+fn analysis_delete_loudness_for_track(
+    track_id: String,
+    cache: tauri::State<'_, analysis_cache::AnalysisCache>,
+) -> Result<u64, String> {
+    cache.delete_loudness_for_track_id(&track_id)
+}
+
 #[tauri::command]
 fn analysis_enqueue_seed_from_url(
     track_id: String,
@@ -4099,6 +4107,7 @@ pub fn run() {
             analysis_get_waveform,
             analysis_get_waveform_for_track,
             analysis_get_loudness_for_track,
+            analysis_delete_loudness_for_track,
             analysis_enqueue_seed_from_url,
             download_track_offline,
             delete_offline_track,