Server-Monitor v3, Composer v2, Temp-Voice-Panel und Embed-Polish

- Server-Monitor v3: gamedig-Integration (300+ Spiele), GSM-Stil-Embeds
  (Spieler-Balken mit %, Map, Spieler-Liste, klickbarer Connect-Link,
  Ping im Footer), Down/Up-Alerts (2 Fails → 🚨, Recovery → ✅ mit
  Downtime) in konfigurierbaren Alert-Kanal; Server-Tab mit 19
  Spiel-Presets, Host/Port bzw. Query-URL und Connect-URL
- Composer v2: visueller Embed-Builder mit Live-Discord-Preview
  (Autor, Felder, Bilder, Farbe, Footer, Timestamp), speicherbare
  Vorlagen (/api/templates), /api/compose versteht volle Embeds
- Temp-Voice: Control-Panel im erstellten Kanal (Umbenennen, Sperren,
  Limit, Löschen) — nur der Kanal-Besitzer darf bedienen
- Embed-Polish: brandEmbed-Factory (src/embeds.js), Footer überall
  mit Bot-Avatar-Icon

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/db.js

@@ -361,7 +361,26 @@ db.exec(`
     CREATE TABLE IF NOT EXISTS temp_voice (
         channel_id TEXT PRIMARY KEY
     );
+    CREATE TABLE IF NOT EXISTS message_templates (
+        id      INTEGER PRIMARY KEY AUTOINCREMENT,
+        name    TEXT NOT NULL UNIQUE,
+        payload TEXT NOT NULL
+    );
 `);
+// Migration: Temp-Voice-Besitzer (fürs Control-Panel)
+{
+    const cols = db.prepare('PRAGMA table_info(temp_voice)').all().map((c) => c.name);
+    if (!cols.includes('owner_id')) db.exec(`ALTER TABLE temp_voice ADD COLUMN owner_id TEXT NOT NULL DEFAULT ''`);
+}
+const upsertTemplate = db.prepare(`
+    INSERT INTO message_templates (name, payload) VALUES (?, ?)
+    ON CONFLICT(name) DO UPDATE SET payload = excluded.payload
+`);
+const listTemplatesStmt = db.prepare('SELECT id, name, payload FROM message_templates ORDER BY name');
+const deleteTemplateStmt = db.prepare('DELETE FROM message_templates WHERE name = ?');
+export const saveTemplate = (name, payload) => upsertTemplate.run(name, JSON.stringify(payload));
+export const listTemplates = () => listTemplatesStmt.all().map((t) => ({ ...t, payload: JSON.parse(t.payload) }));
+export const deleteTemplate = (name) => deleteTemplateStmt.run(name).changes > 0;
 const upsertTrigger = db.prepare(`
     INSERT INTO triggers (keyword, reply) VALUES (?, ?)
     ON CONFLICT(keyword) DO UPDATE SET reply = excluded.reply
@@ -395,10 +414,12 @@ const activityRangeStmt = db.prepare(
 );
 export const activityRange = (days = 30) => activityRangeStmt.all(`-${days} days`);
 
-const insertTempVoice = db.prepare('INSERT OR IGNORE INTO temp_voice (channel_id) VALUES (?)');
+const insertTempVoice = db.prepare('INSERT OR IGNORE INTO temp_voice (channel_id, owner_id) VALUES (?, ?)');
+const tempVoiceOwnerStmt = db.prepare('SELECT owner_id FROM temp_voice WHERE channel_id = ?');
+export const tempVoiceOwner = (id) => tempVoiceOwnerStmt.get(id)?.owner_id ?? null;
 const deleteTempVoiceStmt = db.prepare('DELETE FROM temp_voice WHERE channel_id = ?');
 const listTempVoiceStmt = db.prepare('SELECT channel_id FROM temp_voice');
-export const trackTempVoice = (id) => insertTempVoice.run(id);
+export const trackTempVoice = (id, ownerId = '') => insertTempVoice.run(id, ownerId);
 export const untrackTempVoice = (id) => deleteTempVoiceStmt.run(id);
 export const listTempVoice = () => listTempVoiceStmt.all().map((r) => r.channel_id);
 const isTempVoiceStmt = db.prepare('SELECT 1 FROM temp_voice WHERE channel_id = ?');
@@ -453,11 +474,21 @@ db.exec(`
         db.prepare(`DELETE FROM settings WHERE key = 'gameservers'`).run();
     }
 }
+// Migration v3: host/port (gamedig) + connect_url (Connect-Link im Embed)
+{
+    const cols = db.prepare('PRAGMA table_info(gameservers)').all().map((c) => c.name);
+    if (!cols.includes('host')) db.exec(`ALTER TABLE gameservers ADD COLUMN host TEXT NOT NULL DEFAULT ''`);
+    if (!cols.includes('port')) db.exec('ALTER TABLE gameservers ADD COLUMN port INTEGER');
+    if (!cols.includes('connect_url')) db.exec(`ALTER TABLE gameservers ADD COLUMN connect_url TEXT NOT NULL DEFAULT ''`);
+}
 const insertGameserver = db.prepare(`
-    INSERT INTO gameservers (name, type, query_url, address) VALUES (@name, @type, @query_url, @address)
+    INSERT INTO gameservers (name, type, query_url, address, host, port, connect_url)
+    VALUES (@name, @type, @query_url, @address, @host, @port, @connect_url)
 `);
 const updateGameserverStmt = db.prepare(`
-    UPDATE gameservers SET name = @name, type = @type, query_url = @query_url, address = @address WHERE id = @id
+    UPDATE gameservers SET name = @name, type = @type, query_url = @query_url, address = @address,
+        host = @host, port = @port, connect_url = @connect_url
+    WHERE id = @id
 `);
 const setGameserverMessageStmt = db.prepare('UPDATE gameservers SET message_id = ? WHERE id = ?');
 const listGameserversStmt = db.prepare('SELECT * FROM gameservers ORDER BY id');