agent_panel: plain-language output — simple, short, no jargon/acronyms

Owner request: panel notes and rationale must read like plain everyday
English for a non-trader. Style rule added to the shared take contract
and synthesizer prompt, all few-shot examples rewritten in the target
voice (examples carry the style), and the Telegram votes line now spells
out full stances ("macro: support") instead of "macro:sup".

Before: "BUY against Bollinger SELL and price above upper band; 4h
neutral, mixed MTF"  →  After: "The price is above its usual range, and
the bigger picture is not clearly rising, so buying now is risky."

Claude-Session: https://claude.ai/code/session_01SisdfkxnXNL9iZsXxN3T15

telegram_bot.py

@@ -417,7 +417,7 @@ def format_signal_message(report: SignalReport) -> str:
             f"{_escape_md(report.panel_rationale)}")
         if report.panel_takes:
             votes = " · ".join(
-                f"{t['persona']}:{t['stance'][:3]}" for t in report.panel_takes)
+                f"{t['persona']}: {t['stance']}" for t in report.panel_takes)
             extra.append(f"   _{_escape_md(votes)}_")
     if extra:
         lines += [""] + extra