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/Cargo.lock

@@ -735,6 +735,7 @@ dependencies = [
  "dirs 5.0.1",
  "fantoccini",
  "futures",
+ "keyring",
  "regex",
  "reqwest 0.11.27",
  "serde",
@@ -2117,6 +2118,16 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "keyring"
+version = "3.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eebcc3aff044e5944a8fbaf69eb277d11986064cba30c468730e8b9909fb551c"
+dependencies = [
+ "log",
+ "zeroize",
+]
+
 [[package]]
 name = "kuchikiki"
 version = "0.8.8-speedreader"
@@ -5913,6 +5924,12 @@ dependencies = [
  "synstructure",
 ]
 
+[[package]]
+name = "zeroize"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
+
 [[package]]
 name = "zerotrie"
 version = "0.2.3"

desktop/src-tauri/Cargo.toml

@@ -35,3 +35,6 @@ base64 = "0.22"
 thiserror = "2"
 uuid = { version = "1", features = ["v4", "serde"] }
 
+# Secure storage (OS keyring/keychain)
+keyring = "3"
+

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");