Production readiness hardening and ops tooling

migrations/002_export_jobs.sql

@@ -0,0 +1,16 @@
+CREATE TABLE IF NOT EXISTS export_jobs (
+  id TEXT PRIMARY KEY,
+  job_type TEXT NOT NULL,
+  status TEXT NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'running', 'completed', 'failed')),
+  requested_by TEXT,
+  request_json JSONB NOT NULL DEFAULT '{}'::jsonb,
+  result_content_type TEXT,
+  result_filename TEXT,
+  result_body TEXT,
+  error_message TEXT,
+  created_at TIMESTAMPTZ NOT NULL,
+  started_at TIMESTAMPTZ,
+  completed_at TIMESTAMPTZ
+);
+
+CREATE INDEX IF NOT EXISTS idx_export_jobs_status ON export_jobs (status, created_at DESC);