feat(desktop-context): add approved desktop context capsules

apps/desktop/src-tauri/Cargo.toml

@@ -67,6 +67,7 @@ clipboard-rs = "0.3.4"
 html5gum = { version = "0.8.3", default-features = false }
 sha2 = "0.10"
 velopack = { version = "=0.0.1589-ga2c5a97", features = ["public-utils"] }
+xcap = "0.9.6"
 
 [dev-dependencies]
 tempfile = "3"
@@ -109,6 +110,7 @@ windows = { version = "0.58", features = [
     "Win32_System_Com",
     "Win32_System_Threading",
     "Win32_UI_Controls_Dialogs",
+    "Win32_UI_Accessibility",
     "Win32_UI_Input_KeyboardAndMouse",
     "Win32_UI_Shell",
     "Win32_UI_Shell_Common",

apps/desktop/src-tauri/src/commands/desktop_context.rs

@@ -0,0 +1,36 @@
+// Copyright (c) 2026. Qian Cheng. Licensed under GPL v3.
+
+//! Desktop context commands.
+
+use tauri::{AppHandle, Runtime, State};
+
+use crate::core::system::desktop_context::{
+    BoundDesktopContext, DesktopContextCapsule, DesktopContextRuntime,
+};
+
+#[tauri::command]
+pub fn desktop_context_get_capsule(
+    runtime: State<'_, DesktopContextRuntime>,
+    capsule_id: String,
+) -> Result<Option<DesktopContextCapsule>, String> {
+    runtime.get_capsule(&capsule_id)
+}
+
+#[tauri::command]
+pub fn desktop_context_bind_capsule(
+    runtime: State<'_, DesktopContextRuntime>,
+    capsule_id: String,
+) -> Result<Option<BoundDesktopContext>, String> {
+    runtime.bind_capsule(&capsule_id)
+}
+
+#[tauri::command]
+pub fn desktop_context_capture_sensitive<R: Runtime>(
+    app: AppHandle<R>,
+    runtime: State<'_, DesktopContextRuntime>,
+    capsule_id: String,
+    include: Vec<String>,
+    screenshot_target: Option<String>,
+) -> Result<Option<DesktopContextCapsule>, String> {
+    runtime.capture_sensitive(&app, &capsule_id, &include, screenshot_target.as_deref())
+}

apps/desktop/src-tauri/src/commands/mod.rs

@@ -5,6 +5,7 @@ pub mod autostart;
 pub mod built_in_tools;
 pub mod clipboard;
 pub mod database;
+pub mod desktop_context;
 pub mod mcp;
 pub mod paths;
 pub mod quick_search;
@@ -42,6 +43,9 @@ pub fn invoke_handler<R: tauri::Runtime>(
         clipboard::read_clipboard_payload,
         clipboard::consume_shortcut_auto_paste_payload,
         clipboard::write_clipboard_text,
+        desktop_context::desktop_context_get_capsule,
+        desktop_context::desktop_context_bind_capsule,
+        desktop_context::desktop_context_capture_sensitive,
         autostart::enable_autostart,
         autostart::disable_autostart,
         autostart::is_autostart_enabled,