feat: log schwab-scraper and mcp-server commit SHAs at container startup

Bake commit SHAs into the Docker image via CI and log them on server
startup so it's easy to verify which version of schwab-scraper is running.

server.py

@@ -32,6 +32,41 @@ _scraper_logger = logging.getLogger("schwab_scraper")
 _scraper_logger.setLevel(logging.DEBUG if os.getenv("SCHWAB_DEBUG", "").lower() in ("1", "true") else logging.INFO)
 _scraper_logger.propagate = True
 
+_startup_logger = logging.getLogger("schwab_mcp_custom")
+
+
+def _read_commit_file(path: str) -> str | None:
+    try:
+        with open(path) as f:
+            return f.read().strip() or None
+    except FileNotFoundError:
+        return None
+
+
+_scraper_commit = _read_commit_file(
+    os.path.join(os.path.dirname(__file__), "schwab-scraper-commit.txt")
+)
+_mcp_commit = _read_commit_file(
+    os.path.join(os.path.dirname(__file__), "mcp-server-commit.txt")
+)
+
+if _scraper_commit:
+    _startup_logger.info("schwab-scraper commit: %s", _scraper_commit)
+else:
+    _startup_logger.info("schwab-scraper commit: (not available)")
+
+if _mcp_commit:
+    _startup_logger.info("mcp-server commit: %s", _mcp_commit)
+else:
+    _startup_logger.info("mcp-server commit: (not available)")
+
+try:
+    from importlib.metadata import version as _pkg_version
+
+    _startup_logger.info("schwab-scraper package version: %s", _pkg_version("schwab-scraper"))
+except Exception:
+    _startup_logger.info("schwab-scraper package version: (unknown)")
+
 
 # ---------------------------------------------------------------------------
 # Log capture helper — captures scraper logs to a string buffer AND tees