Method spawn

src/daemon/git_watch.rs:258–285

Registers the recently-seen projects and starts the backstop timer. Called once from `run_foreground_unix` after the engine is built. Safe to call on a disabled watcher (no-op).

(&self, global_db_path: Option<PathBuf>)

    /// Called once from `run_foreground_unix` after the engine is built. Safe to
    /// call on a disabled watcher (no-op).
    pub async fn spawn(&self, global_db_path: Option<PathBuf>) {
        if !self.inner.enabled {
            return;
        }
        // Enumerate recently-seen code projects (most-recent first, capped).
        let window = 14 * 86_400;
        let cap = self.inner.config.watch_max_projects;
        let db = match global_db_path.as_deref() {
            Some(path) => crate::global_db::GlobalDb::open_at(path).await,
            None => crate::global_db::GlobalDb::open().await,
        };
        if let Some(db) = db {
            let projects = db.code_projects_seen_within(window, cap).await;
            for record in projects {
                let root = PathBuf::from(&record.canonical_root);
                if root.is_dir() {
                    self.ensure_watching(&root).await;
                }
            }
        }

        // Start the single backstop timer.
        let watcher = self.clone();
        let db_path = global_db_path.clone();
        tokio::spawn(async move {
            backstop::run(watcher, db_path).await;
        });
    }

    /// Lazily starts watching `project_root` if not already watched and under
    /// the project cap. Idempotent and cheap on the hot path (a map lookup).