CREATE TABLE IF NOT EXISTS task_runs (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    task_id TEXT NOT NULL REFERENCES tasks(id) ON DELETE CASCADE,
    trigger_type TEXT NOT NULL
        CHECK (trigger_type IN ('schedule', 'manual', 'retry')),
    status TEXT NOT NULL
        CHECK (status IN (
            'queued', 'running', 'succeeded', 'failed',
            'timed_out', 'cancelled', 'skipped'
        )),
    started_at TEXT,
    finished_at TEXT,
    duration_ms INTEGER,
    exit_code INTEGER,
    error_message TEXT,
    created_at TEXT NOT NULL
);

CREATE INDEX IF NOT EXISTS idx_task_runs_task_created
    ON task_runs(task_id, created_at DESC);

CREATE INDEX IF NOT EXISTS idx_task_runs_status
    ON task_runs(status);