Tori: AI agent workflow manager - initial implementation

Rust (Axum) + Vue 3 + SQLite. Features:
- Project CRUD REST API with proper error handling
- Per-project agent loop (mpsc + broadcast channels)
- LLM-driven plan generation and replan on user feedback
- SSH command execution with status streaming
- WebSocket real-time updates to frontend
- Four-zone UI: requirement, plan (left), execution (right), comment

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/api/mod.rs

@@ -0,0 +1,12 @@
+mod projects;
+mod workflows;
+
+use std::sync::Arc;
+use axum::Router;
+use crate::AppState;
+
+pub fn router(state: Arc<AppState>) -> Router {
+    Router::new()
+        .merge(projects::router(state.clone()))
+        .merge(workflows::router(state))
+}