Narrow exception suppression to OperationalError only

Address code review feedback: catch only sqlalchemy.exc.OperationalError
instead of all exceptions, so legitimate errors (permissions, disk space)
are not silently swallowed.

Agent-Logs-Url: https://github.com/GitHubSecurityLab/seclab-taskflows/sessions/84c7962f-5966-4924-8617-8378affd1621

Co-authored-by: p- <176818+p-@users.noreply.github.com>

Author: Copilot

src/seclab_taskflows/mcp_servers/gh_file_viewer.py

@@ -10,6 +10,7 @@
 import contextlib
 from sqlalchemy.orm import DeclarativeBase, mapped_column, Mapped
 from sqlalchemy import create_engine
+from sqlalchemy.exc import OperationalError
 from sqlalchemy.orm import Session
 from typing import Optional
 from pathlib import Path
@@ -54,7 +55,7 @@ def __repr__(self):
 SEARCH_RESULT_DIR = mcp_data_dir("seclab-taskflows", "gh_file_viewer", "SEARCH_RESULTS_DIR")
 
 engine = create_engine(f"sqlite:///{os.path.abspath(SEARCH_RESULT_DIR)}/search_result.db", echo=False)
-with contextlib.suppress(Exception):
+with contextlib.suppress(OperationalError):
     Base.metadata.create_all(engine, tables=[SearchResults.__table__])