feat: Agent Orchestrator — multi-project agent dashboard

Tauri + Svelte 5 + Rust application for orchestrating multiple AI coding agents.
Includes Claude, Aider, Codex, and Ollama provider support, multi-agent
communication (btmsg/bttask), session anchors, plugin sandbox, FTS5 search,
Landlock sandboxing, and 507 vitest + 110 cargo tests.

src-tauri/src/commands/secrets.rs

@@ -0,0 +1,34 @@
+use crate::secrets::SecretsManager;
+
+#[tauri::command]
+pub fn secrets_store(key: String, value: String) -> Result<(), String> {
+    SecretsManager::store_secret(&key, &value)
+}
+
+#[tauri::command]
+pub fn secrets_get(key: String) -> Result<Option<String>, String> {
+    SecretsManager::get_secret(&key)
+}
+
+#[tauri::command]
+pub fn secrets_delete(key: String) -> Result<(), String> {
+    SecretsManager::delete_secret(&key)
+}
+
+#[tauri::command]
+pub fn secrets_list() -> Result<Vec<String>, String> {
+    SecretsManager::list_keys()
+}
+
+#[tauri::command]
+pub fn secrets_has_keyring() -> bool {
+    SecretsManager::has_keyring()
+}
+
+#[tauri::command]
+pub fn secrets_known_keys() -> Vec<String> {
+    crate::secrets::KNOWN_KEYS
+        .iter()
+        .map(|s| s.to_string())
+        .collect()
+}