feat: bootstrap temporserv project scaffold

Add the initial project blueprint, Go backend skeleton, frontend app shell, database schema draft, and local development/deployment files.

migrations/0001_initial.sql

@@ -0,0 +1,74 @@
+CREATE TABLE IF NOT EXISTS users (
+  id TEXT PRIMARY KEY,
+  username TEXT NOT NULL UNIQUE,
+  password_hash TEXT NOT NULL,
+  is_admin INTEGER NOT NULL DEFAULT 0,
+  created_at TEXT NOT NULL,
+  last_login_at TEXT
+);
+
+CREATE TABLE IF NOT EXISTS library_roots (
+  id TEXT PRIMARY KEY,
+  path TEXT NOT NULL UNIQUE,
+  created_at TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS artists (
+  id TEXT PRIMARY KEY,
+  name TEXT NOT NULL,
+  sort_name TEXT,
+  cover_art_id TEXT,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS albums (
+  id TEXT PRIMARY KEY,
+  artist_id TEXT NOT NULL,
+  title TEXT NOT NULL,
+  sort_title TEXT,
+  year INTEGER,
+  genre TEXT,
+  cover_art_id TEXT,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS tracks (
+  id TEXT PRIMARY KEY,
+  album_id TEXT NOT NULL,
+  artist_id TEXT NOT NULL,
+  title TEXT NOT NULL,
+  track_number INTEGER,
+  disc_number INTEGER,
+  duration_seconds INTEGER,
+  file_path TEXT NOT NULL UNIQUE,
+  content_type TEXT,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS playlists (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  comment TEXT,
+  public INTEGER NOT NULL DEFAULT 0,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS playlist_tracks (
+  playlist_id TEXT NOT NULL,
+  track_id TEXT NOT NULL,
+  position INTEGER NOT NULL,
+  PRIMARY KEY (playlist_id, position)
+);
+
+CREATE TABLE IF NOT EXISTS favorites (
+  user_id TEXT NOT NULL,
+  entity_id TEXT NOT NULL,
+  entity_type TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  PRIMARY KEY (user_id, entity_id, entity_type)
+);