agent_panel: alerts use the macro persona's verdict; all 4 takes still logged

agent_panel.verdict_source defaults to "macro": the macro take's stance is the
verdict, the synthesizer call is skipped (4 LLM calls per panel instead of 5);
"chair" restores the four-voice consensus + OPPOSE guard. Verdict source is
cached per mode and logged (panel_verdict_source). 406 tests.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FC4s6VCURFte4dub4xKxYL

telegram_bot.py

@@ -415,8 +415,10 @@ def format_signal_message(report: SignalReport) -> str:
     if report.panel_verdict:
         mark = {"AGREE": "✅", "OPPOSE": "⛔", "NEUTRAL": "➖"}.get(
             report.panel_verdict, "")
+        panel_label = ("AI macro view"
+                      if report.panel_verdict_source == "macro" else "AI Panel")
         extra.append(
-            f"🤖 AI Panel {mark} *{_escape_md(report.panel_verdict)}* "
+            f"🤖 {panel_label} {mark} *{_escape_md(report.panel_verdict)}* "
             f"({report.panel_confidence:.0f}%) — "
             f"{_escape_md(report.panel_rationale)}")
         if report.panel_takes: