feat: overhaul OpenClaw config panels with JSON5 round-trip write engine

- Add json-five crate for JSON5 serialization preserving comments and formatting
- Rewrite openclaw_config.rs with comment-preserving JSON5 read/write engine
- Add Tauri commands: get_openclaw_live_provider, write_openclaw_config_section
- Redesign EnvPanel as full JSON editor with structured error handling
- Add tools.profile selection (minimal/coding/messaging/full) to ToolsPanel
- Add legacy timeout migration support to AgentsDefaultsPanel
- Add OpenClawHealthBanner component for config validation warnings
- Add supporting hooks, mutations, utility functions, and unit tests

src-tauri/Cargo.lock

@@ -714,6 +714,7 @@ dependencies = [
  "futures",
  "hyper",
  "indexmap 2.11.4",
+ "json-five",
  "json5",
  "log",
  "objc2 0.5.2",
@@ -2510,6 +2511,16 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "json-five"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "865f2d01a4549c1fd8c60640c03ae5249eb374cd8cde8b905628d4b1af95c87c"
+dependencies = [
+ "serde",
+ "unicode-general-category",
+]
+
 [[package]]
 name = "json-patch"
 version = "3.0.1"
@@ -6001,6 +6012,12 @@ dependencies = [
  "unic-common",
 ]
 
+[[package]]
+name = "unicode-general-category"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b993bddc193ae5bd0d623b49ec06ac3e9312875fdae725a975c51db1cc1677f"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.19"