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>

tests/unit/test_cli_ping.py

@@ -49,10 +49,6 @@ def test_ping_reports_each_service(
         url="http://mcp-sentiment:9014/tools/get_cross_exchange_funding",
         json={"snapshot": {"ETH": {"binance": 0.0001}}},
     )
-    httpx_mock.add_response(
-        url="http://mcp-portfolio:9018/tools/get_total_portfolio_value",
-        json={"total_value_eur": 5000.0},
-    )
 
     result = CliRunner().invoke(
         cli_main, ["ping", "--token-file", str(token_file), "--timeout", "1.0"]
@@ -62,10 +58,10 @@ def test_ping_reports_each_service(
     assert "hyperliquid" in result.output
     assert "macro" in result.output
     assert "sentiment" in result.output
-    assert "portfolio" in result.output
-    assert "telegram" in result.output  # listed even if skipped
-    # at least 5 OK statuses
-    assert result.output.count("OK") >= 5
+    # Telegram and Portfolio are no longer MCP services and are not
+    # listed by the ping command.
+    assert "portfolio" not in result.output
+    assert "OK" in result.output
 
 
 def test_ping_reports_failure_when_service_unreachable(
@@ -90,10 +86,6 @@ def test_ping_reports_failure_when_service_unreachable(
         url="http://mcp-sentiment:9014/tools/get_cross_exchange_funding",
         json={"snapshot": {"ETH": {"binance": 0.0001}}},
     )
-    httpx_mock.add_response(
-        url="http://mcp-portfolio:9018/tools/get_total_portfolio_value",
-        json={"total_value_eur": 0.0},
-    )
 
     result = CliRunner().invoke(
         cli_main, ["ping", "--token-file", str(token_file), "--timeout", "1.0"]