refactor: telegram + portfolio in-process (drop shared MCP)

Each bot now manages its own notification + portfolio aggregation:

* TelegramClient calls the public Bot API directly via httpx, reading
  CERBERO_BITE_TELEGRAM_BOT_TOKEN / CERBERO_BITE_TELEGRAM_CHAT_ID from
  env. No credentials → silent disabled mode.
* PortfolioClient composes DeribitClient + HyperliquidClient + the new
  MacroClient.get_asset_price/eur_usd_rate to expose equity (EUR) and
  per-asset exposure as the bot's own slice (no cross-bot view).
* mcp-telegram and mcp-portfolio removed from MCP_SERVICES / McpEndpoints
  and the cerbero-bite ping CLI; health_check no longer probes portfolio.

Docs (02/04/06/07) and docker-compose updated to reflect the new
architecture.

353/353 tests pass; ruff clean; mypy src clean.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/cerbero_bite/runtime/health_check.py

@@ -66,7 +66,6 @@ class HealthCheck:
             _probe("macro", self._ctx.macro.get_calendar(days=1)),
             _probe("sentiment", self._probe_sentiment()),
             _probe("hyperliquid", self._ctx.hyperliquid.funding_rate_annualized("ETH")),
-            _probe("portfolio", self._ctx.portfolio.total_equity_eur()),
         )
 
         # SQLite health: lightweight transaction.