feat(automation): complete unified automation system redesign

Phase 4 completion:
- Add ApprovalQueue component for managing pending approvals
- Add ExecutionResult component for displaying hand/workflow results
- Update Sidebar navigation to use unified AutomationPanel
- Replace separate 'hands' and 'workflow' tabs with single 'automation' tab
- Fix TypeScript type safety issues with unknown types in JSX expressions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

desktop/src-tauri/src/lib.rs

@@ -15,6 +15,9 @@ mod llm;
 // Browser automation module (Fantoccini-based Browser Hand)
 mod browser;
 
+// Secure storage module for OS keyring/keychain
+mod secure_storage;
+
 use serde::Serialize;
 use serde_json::{json, Value};
 use std::fs;
@@ -1066,7 +1069,12 @@ pub fn run() {
             browser::commands::browser_element_screenshot,
             browser::commands::browser_get_source,
             browser::commands::browser_scrape_page,
-            browser::commands::browser_fill_form
+            browser::commands::browser_fill_form,
+            // Secure storage commands (OS keyring/keychain)
+            secure_storage::secure_store_set,
+            secure_storage::secure_store_get,
+            secure_storage::secure_store_delete,
+            secure_storage::secure_store_is_available
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");