fix(core): resolve context initialization mismatch and ensure spread-safety

- Added unit tests to verify AgentLoopContext spread-safety in Config.
- Restored AgentLoopContext abstraction in ShellTool, WebFetchTool, and WebSearchTool constructors.
- Removed redundant defensive optional chaining on config properties in UI and policy logic.
- Updated PR title to follow Conventional Commits.

packages/cli/src/ui/components/messages/ToolConfirmationMessage.tsx

@@ -88,14 +88,13 @@ export const ToolConfirmationMessage: React.FC<
   const settings = useSettings();
   const allowPermanentApproval =
     settings.merged.security.enablePermanentToolApproval &&
-    (config?.getDisableAlwaysAllow ? !config.getDisableAlwaysAllow() : true);
+    !config.getDisableAlwaysAllow();
 
   const handlesOwnUI =
     confirmationDetails.type === 'ask_user' ||
     confirmationDetails.type === 'exit_plan_mode';
   const isTrustedFolder =
-    config?.isTrustedFolder?.() &&
-    (config?.getDisableAlwaysAllow ? !config.getDisableAlwaysAllow() : true);
+    config.isTrustedFolder() && !config.getDisableAlwaysAllow();
 
   const handleConfirm = useCallback(
     (outcome: ToolConfirmationOutcome, payload?: ToolConfirmationPayload) => {