fix: make dave telegram alerts conversational

test/telegram-chat.test.mjs

@@ -146,6 +146,74 @@ test('Telegram conversation delivery strips visible markdown and splits large AI
   assert.equal('reply_to_message_id' in sent[1].body, false);
 });
 
+test('Telegram conversation defaults to short human-sized chat chunks', async () => {
+  const alerter = new TelegramAlerter({ botToken: 'test-token', chatId: '42' });
+  const requests = [];
+  const originalFetch = globalThis.fetch;
+  globalThis.fetch = async (url, options = {}) => {
+    requests.push({ url, body: options.body ? JSON.parse(options.body) : null });
+    return { ok: true, json: async () => ({ ok: true, result: { message_id: requests.length } }) };
+  };
+
+  try {
+    const text = [
+      'Das ist die erste kurze Einschaetzung. Sie soll separat lesbar bleiben und nicht wie ein Bericht wirken.',
+      'Hier kommt mehr Kontext, aber auch dieser Kontext bleibt in natuerlichen Chat-Haeppchen. '.repeat(8),
+      'Soll ich die Details danach sauber aufdrillen?',
+    ].join('\n\n');
+    const result = await alerter.sendConversation(text, { delayMs: 0 });
+    assert.equal(result.ok, true);
+  } finally {
+    globalThis.fetch = originalFetch;
+  }
+
+  const sent = requests.filter(request => request.url.includes('/sendMessage'));
+  assert.ok(sent.length >= 3);
+  for (const message of sent) {
+    assert.ok(message.body.text.length <= 420, `message too long: ${message.body.text.length}`);
+    assert.equal('parse_mode' in message.body, false);
+  }
+});
+
+test('Telegram tiered fallback alert is sent as conversational DAVE messages', async () => {
+  const alerter = new TelegramAlerter({ botToken: 'test-token', chatId: '42' });
+  const requests = [];
+  const originalFetch = globalThis.fetch;
+  globalThis.fetch = async (url, options = {}) => {
+    requests.push({ url, body: options.body ? JSON.parse(options.body) : null });
+    return { ok: true, json: async () => ({ ok: true, result: { message_id: requests.length } }) };
+  };
+  const memory = {
+    getAlertedSignals: () => ({}),
+    markAsAlerted: () => {},
+  };
+  const delta = {
+    summary: { totalChanges: 1, criticalChanges: 1, direction: 'mixed' },
+    signals: {
+      new: [{
+        key: 'source_degradation',
+        severity: 'critical',
+        label: '7 additional sources failing',
+        direction: 'up',
+      }],
+      escalated: [],
+    },
+  };
+
+  try {
+    const sent = await alerter.evaluateAndAlert(null, delta, memory, { language: 'de', delayMs: 0 });
+    assert.equal(sent, true);
+  } finally {
+    globalThis.fetch = originalFetch;
+  }
+
+  const texts = requests.filter(request => request.url.includes('/sendMessage')).map(request => request.body.text);
+  assert.ok(texts.length >= 2);
+  assert.match(texts[0], /^\[DAVE \/\/ HINWEIS\]/);
+  assert.doesNotMatch(texts.join('\n'), /CRUCIX ROUTINE|Confidence:|Direction:|Cross-correlation:|Werkzeuge|Tools used/);
+  for (const text of texts) assert.ok(text.length <= 380, `alert chunk too long: ${text.length}`);
+});
+
 test('Telegram OSINT extraction excludes private AI chat messages', () => {
   const messages = extractBotChannelMessages([
     { update_id: 1, message: { text: 'private question', chat: { id: 42, type: 'private' } } },