feat: implement profile activation and runtime identity clarity (#131)

gitea_config.py

@@ -192,11 +192,32 @@ def config_path():
     return (os.environ.get(ENV_CONFIG_PATH) or "").strip() or None
 
 
+_active_profile_override = None
+
+
 def selected_profile_name():
     """Return the selected profile name from the environment, or None."""
+    if _active_profile_override is not None:
+        return _active_profile_override
     return (os.environ.get(ENV_PROFILE) or "").strip() or None
 
 
+def is_runtime_switching_enabled(path=None):
+    """Check if runtime profile switching is explicitly enabled in config."""
+    try:
+        config = load_config(path)
+    except Exception:
+        return False
+    if not config:
+        return False
+    rules = config.get("rules") or {}
+    if rules.get("allow_runtime_switching") is True:
+        return True
+    if config.get("allow_runtime_switching") is True:
+        return True
+    return False
+
+
 def load_config(path=None):
     """Load and minimally validate the canonical JSON config.