Make MinIO bucket creation opt-in with production-safe defaults.

Require buckets to exist by default on connect, extract env_bool parsing, and document local dev overrides for secure and auto-creation settings.

Co-authored-by: Cursor <[email protected]>

python_repositories/config/env_bool.py

@@ -0,0 +1,21 @@
+"""Parse boolean values from environment variables."""
+
+from __future__ import annotations
+
+import os
+
+_TRUTHY = frozenset({"1", "true", "yes", "on"})
+_FALSY = frozenset({"0", "false", "no", "off"})
+
+
+def env_bool(name: str, default: bool) -> bool:
+    """Parse an environment variable as a boolean value."""
+    raw = os.getenv(name)
+    if raw is None:
+        return default
+    normalized = raw.strip().lower()
+    if normalized in _TRUTHY:
+        return True
+    if normalized in _FALSY:
+        return False
+    raise ValueError(f"Invalid boolean value for {name}: {raw!r}")