Include Essentia models in repo + optimize CI/CD

Problème: Les modèles Essentia (28 MB) étaient téléchargés à chaque build CI/CD
- Ralentit les builds (~30 secondes de download)
- Consomme bande passante
- Point de défaillance si serveur Essentia down

Solution:
- Commit les 6 modèles dans backend/models/
- Supprime steps "Download Essentia models" du workflow Gitea
- Retire backend/models/*.pb et *.json du .gitignore

Modèles inclus (~28 MB total):
- discogs-effnet-bs64-1.pb (18 MB) - embedding model
- genre_discogs400-discogs-effnet-1.pb (2 MB) - genre classifier
- genre_discogs400-discogs-effnet-1.json (15 KB) - genre metadata
- mtg_jamendo_moodtheme-discogs-effnet-1.pb (2.6 MB) - mood
- mtg_jamendo_instrument-discogs-effnet-1.pb (2.6 MB) - instruments
- mtg_jamendo_genre-discogs-effnet-1.pb (2.7 MB) - genre alt

Bénéfices:
✅ Builds CI/CD plus rapides (~30s gagnées)
✅ Pas de dépendance externe au serveur Essentia
✅ Versioning des modèles avec le code
✅ Repo offline-friendly

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend/models/genre_discogs400-discogs-effnet-1.json

@@ -0,0 +1,462 @@
+{
+    "name": "Genre Discogs400",
+    "type": "Music genre classification",
+    "link": "https://essentia.upf.edu/models/classification-heads/genre_discogs400/genre_discogs400-discogs-effnet-1.pb",
+    "version": "1",
+    "description": "Prediction of 400 music styles in the from the Discogs taxonomy",
+    "author": "Pablo Alonso",
+    "email": "pablo.alonso@upf.edu",
+    "release_date": "2023-05-04",
+    "framework": "tensorflow",
+    "framework_version": "2.8.0",
+    "classes": [
+        "Blues---Boogie Woogie",
+        "Blues---Chicago Blues",
+        "Blues---Country Blues",
+        "Blues---Delta Blues",
+        "Blues---Electric Blues",
+        "Blues---Harmonica Blues",
+        "Blues---Jump Blues",
+        "Blues---Louisiana Blues",
+        "Blues---Modern Electric Blues",
+        "Blues---Piano Blues",
+        "Blues---Rhythm & Blues",
+        "Blues---Texas Blues",
+        "Brass & Military---Brass Band",
+        "Brass & Military---Marches",
+        "Brass & Military---Military",
+        "Children's---Educational",
+        "Children's---Nursery Rhymes",
+        "Children's---Story",
+        "Classical---Baroque",
+        "Classical---Choral",
+        "Classical---Classical",
+        "Classical---Contemporary",
+        "Classical---Impressionist",
+        "Classical---Medieval",
+        "Classical---Modern",
+        "Classical---Neo-Classical",
+        "Classical---Neo-Romantic",
+        "Classical---Opera",
+        "Classical---Post-Modern",
+        "Classical---Renaissance",
+        "Classical---Romantic",
+        "Electronic---Abstract",
+        "Electronic---Acid",
+        "Electronic---Acid House",
+        "Electronic---Acid Jazz",
+        "Electronic---Ambient",
+        "Electronic---Bassline",
+        "Electronic---Beatdown",
+        "Electronic---Berlin-School",
+        "Electronic---Big Beat",
+        "Electronic---Bleep",
+        "Electronic---Breakbeat",
+        "Electronic---Breakcore",
+        "Electronic---Breaks",
+        "Electronic---Broken Beat",
+        "Electronic---Chillwave",
+        "Electronic---Chiptune",
+        "Electronic---Dance-pop",
+        "Electronic---Dark Ambient",
+        "Electronic---Darkwave",
+        "Electronic---Deep House",
+        "Electronic---Deep Techno",
+        "Electronic---Disco",
+        "Electronic---Disco Polo",
+        "Electronic---Donk",
+        "Electronic---Downtempo",
+        "Electronic---Drone",
+        "Electronic---Drum n Bass",
+        "Electronic---Dub",
+        "Electronic---Dub Techno",
+        "Electronic---Dubstep",
+        "Electronic---Dungeon Synth",
+        "Electronic---EBM",
+        "Electronic---Electro",
+        "Electronic---Electro House",
+        "Electronic---Electroclash",
+        "Electronic---Euro House",
+        "Electronic---Euro-Disco",
+        "Electronic---Eurobeat",
+        "Electronic---Eurodance",
+        "Electronic---Experimental",
+        "Electronic---Freestyle",
+        "Electronic---Future Jazz",
+        "Electronic---Gabber",
+        "Electronic---Garage House",
+        "Electronic---Ghetto",
+        "Electronic---Ghetto House",
+        "Electronic---Glitch",
+        "Electronic---Goa Trance",
+        "Electronic---Grime",
+        "Electronic---Halftime",
+        "Electronic---Hands Up",
+        "Electronic---Happy Hardcore",
+        "Electronic---Hard House",
+        "Electronic---Hard Techno",
+        "Electronic---Hard Trance",
+        "Electronic---Hardcore",
+        "Electronic---Hardstyle",
+        "Electronic---Hi NRG",
+        "Electronic---Hip Hop",
+        "Electronic---Hip-House",
+        "Electronic---House",
+        "Electronic---IDM",
+        "Electronic---Illbient",
+        "Electronic---Industrial",
+        "Electronic---Italo House",
+        "Electronic---Italo-Disco",
+        "Electronic---Italodance",
+        "Electronic---Jazzdance",
+        "Electronic---Juke",
+        "Electronic---Jumpstyle",
+        "Electronic---Jungle",
+        "Electronic---Latin",
+        "Electronic---Leftfield",
+        "Electronic---Makina",
+        "Electronic---Minimal",
+        "Electronic---Minimal Techno",
+        "Electronic---Modern Classical",
+        "Electronic---Musique Concr\u00e8te",
+        "Electronic---Neofolk",
+        "Electronic---New Age",
+        "Electronic---New Beat",
+        "Electronic---New Wave",
+        "Electronic---Noise",
+        "Electronic---Nu-Disco",
+        "Electronic---Power Electronics",
+        "Electronic---Progressive Breaks",
+        "Electronic---Progressive House",
+        "Electronic---Progressive Trance",
+        "Electronic---Psy-Trance",
+        "Electronic---Rhythmic Noise",
+        "Electronic---Schranz",
+        "Electronic---Sound Collage",
+        "Electronic---Speed Garage",
+        "Electronic---Speedcore",
+        "Electronic---Synth-pop",
+        "Electronic---Synthwave",
+        "Electronic---Tech House",
+        "Electronic---Tech Trance",
+        "Electronic---Techno",
+        "Electronic---Trance",
+        "Electronic---Tribal",
+        "Electronic---Tribal House",
+        "Electronic---Trip Hop",
+        "Electronic---Tropical House",
+        "Electronic---UK Garage",
+        "Electronic---Vaporwave",
+        "Folk, World, & Country---African",
+        "Folk, World, & Country---Bluegrass",
+        "Folk, World, & Country---Cajun",
+        "Folk, World, & Country---Canzone Napoletana",
+        "Folk, World, & Country---Catalan Music",
+        "Folk, World, & Country---Celtic",
+        "Folk, World, & Country---Country",
+        "Folk, World, & Country---Fado",
+        "Folk, World, & Country---Flamenco",
+        "Folk, World, & Country---Folk",
+        "Folk, World, & Country---Gospel",
+        "Folk, World, & Country---Highlife",
+        "Folk, World, & Country---Hillbilly",
+        "Folk, World, & Country---Hindustani",
+        "Folk, World, & Country---Honky Tonk",
+        "Folk, World, & Country---Indian Classical",
+        "Folk, World, & Country---La\u00efk\u00f3",
+        "Folk, World, & Country---Nordic",
+        "Folk, World, & Country---Pacific",
+        "Folk, World, & Country---Polka",
+        "Folk, World, & Country---Ra\u00ef",
+        "Folk, World, & Country---Romani",
+        "Folk, World, & Country---Soukous",
+        "Folk, World, & Country---S\u00e9ga",
+        "Folk, World, & Country---Volksmusik",
+        "Folk, World, & Country---Zouk",
+        "Folk, World, & Country---\u00c9ntekhno",
+        "Funk / Soul---Afrobeat",
+        "Funk / Soul---Boogie",
+        "Funk / Soul---Contemporary R&B",
+        "Funk / Soul---Disco",
+        "Funk / Soul---Free Funk",
+        "Funk / Soul---Funk",
+        "Funk / Soul---Gospel",
+        "Funk / Soul---Neo Soul",
+        "Funk / Soul---New Jack Swing",
+        "Funk / Soul---P.Funk",
+        "Funk / Soul---Psychedelic",
+        "Funk / Soul---Rhythm & Blues",
+        "Funk / Soul---Soul",
+        "Funk / Soul---Swingbeat",
+        "Funk / Soul---UK Street Soul",
+        "Hip Hop---Bass Music",
+        "Hip Hop---Boom Bap",
+        "Hip Hop---Bounce",
+        "Hip Hop---Britcore",
+        "Hip Hop---Cloud Rap",
+        "Hip Hop---Conscious",
+        "Hip Hop---Crunk",
+        "Hip Hop---Cut-up/DJ",
+        "Hip Hop---DJ Battle Tool",
+        "Hip Hop---Electro",
+        "Hip Hop---G-Funk",
+        "Hip Hop---Gangsta",
+        "Hip Hop---Grime",
+        "Hip Hop---Hardcore Hip-Hop",
+        "Hip Hop---Horrorcore",
+        "Hip Hop---Instrumental",
+        "Hip Hop---Jazzy Hip-Hop",
+        "Hip Hop---Miami Bass",
+        "Hip Hop---Pop Rap",
+        "Hip Hop---Ragga HipHop",
+        "Hip Hop---RnB/Swing",
+        "Hip Hop---Screw",
+        "Hip Hop---Thug Rap",
+        "Hip Hop---Trap",
+        "Hip Hop---Trip Hop",
+        "Hip Hop---Turntablism",
+        "Jazz---Afro-Cuban Jazz",
+        "Jazz---Afrobeat",
+        "Jazz---Avant-garde Jazz",
+        "Jazz---Big Band",
+        "Jazz---Bop",
+        "Jazz---Bossa Nova",
+        "Jazz---Contemporary Jazz",
+        "Jazz---Cool Jazz",
+        "Jazz---Dixieland",
+        "Jazz---Easy Listening",
+        "Jazz---Free Improvisation",
+        "Jazz---Free Jazz",
+        "Jazz---Fusion",
+        "Jazz---Gypsy Jazz",
+        "Jazz---Hard Bop",
+        "Jazz---Jazz-Funk",
+        "Jazz---Jazz-Rock",
+        "Jazz---Latin Jazz",
+        "Jazz---Modal",
+        "Jazz---Post Bop",
+        "Jazz---Ragtime",
+        "Jazz---Smooth Jazz",
+        "Jazz---Soul-Jazz",
+        "Jazz---Space-Age",
+        "Jazz---Swing",
+        "Latin---Afro-Cuban",
+        "Latin---Bai\u00e3o",
+        "Latin---Batucada",
+        "Latin---Beguine",
+        "Latin---Bolero",
+        "Latin---Boogaloo",
+        "Latin---Bossanova",
+        "Latin---Cha-Cha",
+        "Latin---Charanga",
+        "Latin---Compas",
+        "Latin---Cubano",
+        "Latin---Cumbia",
+        "Latin---Descarga",
+        "Latin---Forr\u00f3",
+        "Latin---Guaguanc\u00f3",
+        "Latin---Guajira",
+        "Latin---Guaracha",
+        "Latin---MPB",
+        "Latin---Mambo",
+        "Latin---Mariachi",
+        "Latin---Merengue",
+        "Latin---Norte\u00f1o",
+        "Latin---Nueva Cancion",
+        "Latin---Pachanga",
+        "Latin---Porro",
+        "Latin---Ranchera",
+        "Latin---Reggaeton",
+        "Latin---Rumba",
+        "Latin---Salsa",
+        "Latin---Samba",
+        "Latin---Son",
+        "Latin---Son Montuno",
+        "Latin---Tango",
+        "Latin---Tejano",
+        "Latin---Vallenato",
+        "Non-Music---Audiobook",
+        "Non-Music---Comedy",
+        "Non-Music---Dialogue",
+        "Non-Music---Education",
+        "Non-Music---Field Recording",
+        "Non-Music---Interview",
+        "Non-Music---Monolog",
+        "Non-Music---Poetry",
+        "Non-Music---Political",
+        "Non-Music---Promotional",
+        "Non-Music---Radioplay",
+        "Non-Music---Religious",
+        "Non-Music---Spoken Word",
+        "Pop---Ballad",
+        "Pop---Bollywood",
+        "Pop---Bubblegum",
+        "Pop---Chanson",
+        "Pop---City Pop",
+        "Pop---Europop",
+        "Pop---Indie Pop",
+        "Pop---J-pop",
+        "Pop---K-pop",
+        "Pop---Kay\u014dkyoku",
+        "Pop---Light Music",
+        "Pop---Music Hall",
+        "Pop---Novelty",
+        "Pop---Parody",
+        "Pop---Schlager",
+        "Pop---Vocal",
+        "Reggae---Calypso",
+        "Reggae---Dancehall",
+        "Reggae---Dub",
+        "Reggae---Lovers Rock",
+        "Reggae---Ragga",
+        "Reggae---Reggae",
+        "Reggae---Reggae-Pop",
+        "Reggae---Rocksteady",
+        "Reggae---Roots Reggae",
+        "Reggae---Ska",
+        "Reggae---Soca",
+        "Rock---AOR",
+        "Rock---Acid Rock",
+        "Rock---Acoustic",
+        "Rock---Alternative Rock",
+        "Rock---Arena Rock",
+        "Rock---Art Rock",
+        "Rock---Atmospheric Black Metal",
+        "Rock---Avantgarde",
+        "Rock---Beat",
+        "Rock---Black Metal",
+        "Rock---Blues Rock",
+        "Rock---Brit Pop",
+        "Rock---Classic Rock",
+        "Rock---Coldwave",
+        "Rock---Country Rock",
+        "Rock---Crust",
+        "Rock---Death Metal",
+        "Rock---Deathcore",
+        "Rock---Deathrock",
+        "Rock---Depressive Black Metal",
+        "Rock---Doo Wop",
+        "Rock---Doom Metal",
+        "Rock---Dream Pop",
+        "Rock---Emo",
+        "Rock---Ethereal",
+        "Rock---Experimental",
+        "Rock---Folk Metal",
+        "Rock---Folk Rock",
+        "Rock---Funeral Doom Metal",
+        "Rock---Funk Metal",
+        "Rock---Garage Rock",
+        "Rock---Glam",
+        "Rock---Goregrind",
+        "Rock---Goth Rock",
+        "Rock---Gothic Metal",
+        "Rock---Grindcore",
+        "Rock---Grunge",
+        "Rock---Hard Rock",
+        "Rock---Hardcore",
+        "Rock---Heavy Metal",
+        "Rock---Indie Rock",
+        "Rock---Industrial",
+        "Rock---Krautrock",
+        "Rock---Lo-Fi",
+        "Rock---Lounge",
+        "Rock---Math Rock",
+        "Rock---Melodic Death Metal",
+        "Rock---Melodic Hardcore",
+        "Rock---Metalcore",
+        "Rock---Mod",
+        "Rock---Neofolk",
+        "Rock---New Wave",
+        "Rock---No Wave",
+        "Rock---Noise",
+        "Rock---Noisecore",
+        "Rock---Nu Metal",
+        "Rock---Oi",
+        "Rock---Parody",
+        "Rock---Pop Punk",
+        "Rock---Pop Rock",
+        "Rock---Pornogrind",
+        "Rock---Post Rock",
+        "Rock---Post-Hardcore",
+        "Rock---Post-Metal",
+        "Rock---Post-Punk",
+        "Rock---Power Metal",
+        "Rock---Power Pop",
+        "Rock---Power Violence",
+        "Rock---Prog Rock",
+        "Rock---Progressive Metal",
+        "Rock---Psychedelic Rock",
+        "Rock---Psychobilly",
+        "Rock---Pub Rock",
+        "Rock---Punk",
+        "Rock---Rock & Roll",
+        "Rock---Rockabilly",
+        "Rock---Shoegaze",
+        "Rock---Ska",
+        "Rock---Sludge Metal",
+        "Rock---Soft Rock",
+        "Rock---Southern Rock",
+        "Rock---Space Rock",
+        "Rock---Speed Metal",
+        "Rock---Stoner Rock",
+        "Rock---Surf",
+        "Rock---Symphonic Rock",
+        "Rock---Technical Death Metal",
+        "Rock---Thrash",
+        "Rock---Twist",
+        "Rock---Viking Metal",
+        "Rock---Y\u00e9-Y\u00e9",
+        "Stage & Screen---Musical",
+        "Stage & Screen---Score",
+        "Stage & Screen---Soundtrack",
+        "Stage & Screen---Theme"
+    ],
+    "model_types": [
+        "frozen_model",
+        "SavedModel",
+        "onnx"
+    ],
+    "dataset": {
+        "name": "Discogs-4M (unreleased)",
+        "citation": "In-house dataset",
+        "size": "4M full tracks (3.3M used)",
+        "metrics": {
+            "ROC-AUC": 0.95417,
+            "PR-AUC": 0.20629
+        }
+    },
+    "schema": {
+        "inputs": [
+            {
+                "name": "serving_default_model_Placeholder",
+                "type": "float",
+                "shape": [
+                    "batch_size",
+                    1280
+                ]
+            }
+        ],
+        "outputs": [
+            {
+                "name": "PartitionedCall:0",
+                "type": "float",
+                "shape": [
+                    "batch_size",
+                    400
+                ],
+                "op": "Sigmoid",
+                "output_purpose": "predictions"
+            }
+        ]
+    },
+    "citation": "@inproceedings{alonso2022music,\n  title={Music Representation Learning Based on Editorial Metadata from Discogs},\n  author={Alonso-Jim{\\'e}nez, Pablo and Serra, Xavier and Bogdanov, Dmitry},\n  booktitle={Conference of the International Society for Music Information Retrieval (ISMIR)},\n  year={2022}\n}",
+    "inference": {
+        "sample_rate": 16000,
+        "algorithm": "TensorflowPredict2D",
+        "embedding_model": {
+            "algorithm": "TensorflowPredictEffnetDiscogs",
+            "model_name": "discogs-effnet-bs64-1",
+            "link": "https://essentia.upf.edu/models/music-style-classification/discogs-effnet/discogs-effnet-bs64-1.pb"
+        }
+    }
+}