Retire legacy implementations and flatten managed layout

src/VoiceCat.Server/Data/schema.sql

@@ -0,0 +1,38 @@
+CREATE TABLE IF NOT EXISTS accounts (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    username TEXT UNIQUE NOT NULL,
+    pw_hash TEXT NOT NULL,
+    is_admin INTEGER NOT NULL DEFAULT 0,
+    created_at INTEGER NOT NULL,
+    last_login INTEGER NOT NULL DEFAULT 0
+);
+CREATE TABLE IF NOT EXISTS server_meta (key TEXT PRIMARY KEY, value TEXT NOT NULL);
+CREATE TABLE IF NOT EXISTS channels (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    parent_id INTEGER NOT NULL DEFAULT 0,
+    name TEXT UNIQUE NOT NULL,
+    topic TEXT NOT NULL DEFAULT '',
+    password_hash TEXT NOT NULL DEFAULT '',
+    max_users INTEGER NOT NULL DEFAULT 0,
+    type INTEGER NOT NULL DEFAULT 0,
+    audio_codec INTEGER NOT NULL DEFAULT 0,
+    audio_mode INTEGER NOT NULL DEFAULT 0,
+    audio_sample_rate INTEGER NOT NULL DEFAULT 48000,
+    audio_bitrate_bps INTEGER NOT NULL DEFAULT 24000,
+    audio_frame_ms INTEGER NOT NULL DEFAULT 20,
+    audio_application INTEGER NOT NULL DEFAULT 0,
+    audio_fec INTEGER NOT NULL DEFAULT 1,
+    audio_expected_packet_loss INTEGER NOT NULL DEFAULT 10,
+    audio_dtx INTEGER NOT NULL DEFAULT 1,
+    audio_complexity INTEGER NOT NULL DEFAULT 5,
+    sort_order INTEGER NOT NULL DEFAULT 0
+);
+CREATE TABLE IF NOT EXISTS bans (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    subject_type TEXT NOT NULL,
+    subject TEXT NOT NULL,
+    reason TEXT NOT NULL DEFAULT '',
+    expires_at INTEGER NOT NULL DEFAULT 0,
+    created_at INTEGER NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_bans_subject ON bans(subject_type, subject);