fix: resolve pylint/pyright issues in runner, sidecar, and test_runner

runner.py: use 'from bot_bottle import api' (satisfies R0402) with
type: ignore and pylint disable for the cross-branch dependency on
bot_bottle.api (added in PR #318, which merges before this one).
sidecar.py: add pylint disable for intentional broad-exception-caught.
test_runner.py: annotate _make_api_stub(**overrides: object) -> Any and
type stub variable as Any to allow attribute assignment without
type: ignore per-line.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bot_bottle/orchestrator/sidecar.py

@@ -106,7 +106,7 @@ class ForgeSidecar:
     def dispatch(self, method: str, params: dict[str, Any]) -> dict[str, Any]:
         try:
             result = self._invoke(method, params)
-        except Exception as exc:  # noqa: BLE001 — surface as JSON-RPC error
+        except Exception as exc:  # noqa: BLE001  # pylint: disable=broad-exception-caught
             self._log.record(method, params.get("number"), f"error: {exc}")
             return {"ok": False, "error": str(exc)}
         return {"ok": True, "result": result}