feat: add fake acquisition pipeline

worker/lyra_worker/pipeline.py

@@ -0,0 +1,36 @@
+import time
+
+import psycopg
+
+# (state, currentStage) pairs the job moves through, in order, after claim.
+_STAGES = [
+    ("matched", "rank"),
+    ("downloading", "download"),
+    ("tagging", "tag"),
+    ("imported", "import"),
+]
+
+
+def _set_state(conn: psycopg.Connection, job_id: str, state: str, stage: str) -> None:
+    with conn.cursor() as cur:
+        cur.execute(
+            'UPDATE "Job" SET state = %s, "currentStage" = %s, "updatedAt" = now() WHERE id = %s',
+            (state, stage, job_id),
+        )
+    conn.commit()
+
+
+def run_pipeline(conn: psycopg.Connection, job_id: str, stage_delay: float = 0.0) -> None:
+    """Fake acquisition: walk the claimed job through to 'imported'."""
+    for state, stage in _STAGES:
+        if stage_delay:
+            time.sleep(stage_delay)
+        _set_state(conn, job_id, state, stage)
+
+    with conn.cursor() as cur:
+        cur.execute(
+            'UPDATE "Request" SET status = \'completed\' '
+            'WHERE id = (SELECT "requestId" FROM "Job" WHERE id = %s)',
+            (job_id,),
+        )
+    conn.commit()