feat(openclaw): add Env/Tools/Agents config panels

- Migrate OpenClaw commands from provider.rs to dedicated commands/openclaw.rs
- Add backend types and read/write for env, tools, agents.defaults sections
- Create EnvPanel (API key + custom vars KV editor)
- Create ToolsPanel (profile selector + allow/deny lists)
- Create AgentsDefaultsPanel (default model + runtime parameters)
- Extend App.tsx menu bar with Env/Tools/Agents buttons
- Remove Prompts button for OpenClaw (overlaps with Workspace AGENTS.md)

src-tauri/src/lib.rs

@@ -13,8 +13,8 @@ mod gemini_config;
 mod gemini_mcp;
 mod init_status;
 mod mcp;
-mod opencode_config;
 mod openclaw_config;
+mod opencode_config;
 mod panic_hook;
 mod prompt;
 mod prompt_files;
@@ -1013,6 +1013,12 @@ pub fn run() {
             commands::set_openclaw_default_model,
             commands::get_openclaw_model_catalog,
             commands::set_openclaw_model_catalog,
+            commands::get_openclaw_agents_defaults,
+            commands::set_openclaw_agents_defaults,
+            commands::get_openclaw_env,
+            commands::set_openclaw_env,
+            commands::get_openclaw_tools,
+            commands::set_openclaw_tools,
             // Global upstream proxy
             commands::get_global_proxy_url,
             commands::set_global_proxy_url,