Add lyrics pipeline, playlist views, admin toggles, and player polish

Lyrics pipeline (Whisper + Demucs + description alignment):
- New GenerateLyricsJob runs WhisperX with VAD filtering and forced word
  alignment, writes per-track JSON to NAS.
- New DecorateLyricsJob calls the active LLM provider to bake one to
  several emojis into each line (heavy decoration prompt).
- LyricsDescriptionParser strips heading content, section markers, and
  emoji-decoration from a song's description while preserving every
  language verbatim.
- correct_whisper_with_description aligner: strong-match anchors only,
  vocal-region-aware gap-fill so missing verses land on actual singing.
- Owner UI for generate/regenerate/edit/delete in the player gear.

Admin pages:
- /admin/lyrics    toggles for VAD, vocal gap-fill, Demucs, master
- /admin/gpu       extracted GPU section, encoder picker, FFmpeg path
- /admin/backup    extracted users-and-settings export/import
- /admin/settings  now AI/LLM only with provider list and Test button
- /admin/nas-storage hosts NAS settings, repair, disable flow, browser
- Shared partials/settings-styles for a uniform look across pages.

Playlist view tracking:
- Migration adds playlists.view_count and playlist_views dedup table.
- Playlist::bumpViewIfNew increments per device with a one-hour window.
- Tracked from /playlists/{id}, /playlists/share/{token}, /ps/{token},
  and /videos/{id}?playlist={token}.  Dispatched after-response so it
  never blocks the page render.
- Loading a playlist on the video page now runs one query instead of
  the four the old getNextVideo/getPreviousVideo path triggered.
- View counts shown on every playlist card and the playlist hero.

Player polish:
- Floating mini-player is draggable, persists its position in
  localStorage, clamps to viewport on resize.
- Mini disabled entirely on mobile (less than 768px).
- New gear-menu Mini Player toggle (persists in localStorage) lets the
  user disable both scroll-activation and SPA-nav-activation.
- Close button keeps media playing when used on the player's own page.
- SPA navigator now swaps a #page-scripts container so per-page JS
  (channel tabs, etc.) gets re-executed after content swaps.

Storage layout:
- Runtime data moved from /storage/* to /data/* and gitignored.
- /ml/venv, /ml/cache, /ml/__pycache__ excluded.

Co-Authored-By: Claude Opus 4.7 <[email protected]>

database/migrations/2026_05_31_000001_add_audio_track_id_to_video_slides.php

@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('video_slides', function (Blueprint $table) {
+            // NULL = song-wide (legacy / shared). Non-null = owned by that audio track.
+            // On track delete, slides become song-wide rather than disappear.
+            $table->foreignId('audio_track_id')
+                ->nullable()
+                ->after('video_id')
+                ->constrained('video_audio_tracks')
+                ->nullOnDelete();
+
+            $table->index(['video_id', 'audio_track_id']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('video_slides', function (Blueprint $table) {
+            $table->dropIndex(['video_id', 'audio_track_id']);
+            $table->dropConstrainedForeignId('audio_track_id');
+        });
+    }
+};

database/migrations/2026_05_31_000002_add_playlist_views_tracking.php

@@ -0,0 +1,49 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Add playlist view tracking — mirrors the video_views pattern.
+     *
+     *  • playlists.view_count   — denormalised total for fast card rendering
+     *  • playlist_views table   — one row per (playlist, viewer-id) so a refresh
+     *                             within the dedup window doesn't double-count
+     */
+    public function up(): void
+    {
+        Schema::table('playlists', function (Blueprint $table) {
+            $table->unsignedBigInteger('view_count')->default(0)->after('share_token');
+        });
+
+        Schema::create('playlist_views', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('playlist_id');
+            $table->unsignedBigInteger('user_id')->nullable();
+            $table->string('device_id', 64)->nullable();
+            $table->string('device_hash', 64)->nullable();
+            $table->string('ip_address', 64)->nullable();
+            $table->string('country', 8)->nullable();
+            $table->string('country_name', 64)->nullable();
+            $table->string('user_agent', 512)->nullable();
+            $table->timestamp('viewed_at');
+
+            $table->foreign('playlist_id')->references('id')->on('playlists')->onDelete('cascade');
+            $table->index(['playlist_id', 'viewed_at']);
+            $table->index(['playlist_id', 'user_id', 'viewed_at']);
+            $table->index(['playlist_id', 'device_id', 'viewed_at']);
+            $table->index(['playlist_id', 'device_hash', 'viewed_at']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('playlist_views');
+        Schema::table('playlists', function (Blueprint $table) {
+            $table->dropColumn('view_count');
+        });
+    }
+};