Added AI agent to manage metadata

furumi-agent/migrations/0001_initial.sql

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+CREATE EXTENSION IF NOT EXISTS pg_trgm;
+
+CREATE TABLE artists (
+    id   BIGSERIAL PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE albums (
+    id        BIGSERIAL PRIMARY KEY,
+    artist_id BIGINT NOT NULL REFERENCES artists(id) ON DELETE CASCADE,
+    name      TEXT NOT NULL,
+    year      INT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    UNIQUE (artist_id, name)
+);
+
+CREATE TABLE tracks (
+    id              BIGSERIAL PRIMARY KEY,
+    artist_id       BIGINT NOT NULL REFERENCES artists(id) ON DELETE CASCADE,
+    album_id        BIGINT REFERENCES albums(id) ON DELETE SET NULL,
+    title           TEXT NOT NULL,
+    track_number    INT,
+    genre           TEXT,
+    duration_secs   DOUBLE PRECISION,
+    codec           TEXT,
+    bitrate         INT,
+    sample_rate     INT,
+    file_hash       TEXT NOT NULL UNIQUE,
+    file_size       BIGINT NOT NULL,
+    storage_path    TEXT NOT NULL,
+    manual_override BOOLEAN NOT NULL DEFAULT FALSE,
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE pending_tracks (
+    id               UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    status           TEXT NOT NULL DEFAULT 'pending',
+    inbox_path       TEXT NOT NULL,
+    file_hash        TEXT NOT NULL,
+    file_size        BIGINT NOT NULL,
+    raw_title        TEXT,
+    raw_artist       TEXT,
+    raw_album        TEXT,
+    raw_year         INT,
+    raw_track_number INT,
+    raw_genre        TEXT,
+    duration_secs    DOUBLE PRECISION,
+    path_title       TEXT,
+    path_artist      TEXT,
+    path_album       TEXT,
+    path_year        INT,
+    path_track_number INT,
+    norm_title       TEXT,
+    norm_artist      TEXT,
+    norm_album       TEXT,
+    norm_year        INT,
+    norm_track_number INT,
+    norm_genre       TEXT,
+    norm_featured_artists TEXT,
+    confidence       DOUBLE PRECISION,
+    llm_notes        TEXT,
+    error_message    TEXT,
+    created_at       TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at       TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE track_artists (
+    id        BIGSERIAL PRIMARY KEY,
+    track_id  BIGINT NOT NULL REFERENCES tracks(id) ON DELETE CASCADE,
+    artist_id BIGINT NOT NULL REFERENCES artists(id) ON DELETE CASCADE,
+    role      TEXT NOT NULL DEFAULT 'featured',
+    UNIQUE (track_id, artist_id, role)
+);
+
+-- Indexes
+CREATE INDEX idx_artists_name_trgm    ON artists USING gin (name gin_trgm_ops);
+CREATE INDEX idx_albums_name_trgm     ON albums  USING gin (name gin_trgm_ops);
+CREATE INDEX idx_tracks_file_hash     ON tracks (file_hash);
+CREATE INDEX idx_pending_status       ON pending_tracks (status);
+CREATE INDEX idx_pending_file_hash    ON pending_tracks (file_hash);
+CREATE INDEX idx_track_artists_track  ON track_artists (track_id);
+CREATE INDEX idx_track_artists_artist ON track_artists (artist_id);