feat(webhook): pull reject reason from latest comment

handle_verdict(rejected): the reason is now pulled from the issue latest Plane
comment (_latest_comment_reason: GET comments, newest by created_at, HTML
stripped) instead of a fixed stub. Slava writes the reason in a comment before
flipping the status to Rejected. Falls back to a fixed note when there is no
comment / the API call fails.

tests: add test_status_only_verdict.py (test_inreview_comment_does_not_revert
[bug 3 root], test_any_comment_no_pipeline_action,
test_approved_status_advances_without_inprogress_reset,
test_rejected_status_pulls_reason_from_comment) and
test_inprogress_from_needs_input_relaunches_analyst in test_status_trigger.py.
Rewrote the comment-based tests (test_verdict_status, test_plane_approved/
rejected in test_webhooks) under the status-only model: comments are no-ops,
verdicts come from status changes.

tests/test_status_trigger.py

@@ -2,8 +2,9 @@
 
   * work_item.created / issue created -> NO task, NO branch, NO analyst.
   * issue updated -> In Progress (from backlog) -> task created + analyst enqueued.
-  * a second In Progress update for the same issue -> NO duplicate, NO restart
-    (protects handle_comment, which also flips issues to In Progress).
+  * a second In Progress update while the agent is busy -> NO duplicate, NO
+    restart (busy-guard).
+  * In Progress returned from Needs Input (agent idle) -> agent RELAUNCHED.
 
 launcher / Gitea network are mocked. Real FastAPI endpoint via TestClient.
 """
@@ -125,15 +126,34 @@ def test_in_progress_starts_pipeline(mock_seq, mock_branch, mock_docs, mock_enqu
 @patch("src.webhooks.plane._create_initial_docs", new_callable=AsyncMock)
 @patch("src.webhooks.plane._create_gitea_branch", new_callable=AsyncMock)
 @patch("src.plane_sync.fetch_issue_sequence_id", return_value=5)
-def test_repeat_in_progress_is_idempotent(mock_seq, mock_branch, mock_docs, mock_enqueue):
+def test_repeat_in_progress_while_job_active_does_not_relaunch(
+    mock_seq, mock_branch, mock_docs, mock_enqueue
+):
+    """Status-only model busy-guard: a duplicate In Progress webhook that arrives
+    while the stage agent still has a queued/running job must NOT relaunch the
+    agent (no double launch).
+    """
     mock_enqueue.return_value = 1
     _to_in_progress("st-2")
     assert _count("st-2") == 1
     assert mock_enqueue.call_count == 1
 
-    # Second In Progress update (e.g. handle_comment re-set the status). Use a
-    # DISTINCT body (different activity old_value) so webhook dedup does NOT
-    # short-circuit it — this exercises the existing-task idempotency guard in
+    # enqueue_job is mocked above, so no real job row exists. Seed an ACTIVE
+    # (queued) job for the task so has_active_job_for_task() reports the agent as
+    # busy -> the busy-guard fires.
+    conn = get_db()
+    task_id = conn.execute(
+        "SELECT id FROM tasks WHERE plane_id='st-2'"
+    ).fetchone()[0]
+    conn.execute(
+        "INSERT INTO jobs (agent, repo, task_id, status) VALUES (?, ?, ?, 'queued')",
+        ("analyst", "enduro-trails", task_id),
+    )
+    conn.commit()
+    conn.close()
+
+    # Second In Progress update. DISTINCT body (different activity old_value) so
+    # webhook dedup does NOT short-circuit it — this exercises the busy-guard in
     # handle_status_start, not the delivery-dedup layer.
     resp = client.post("/webhook/plane", json={
         "event": "issue", "action": "updated",
@@ -147,4 +167,77 @@ def test_repeat_in_progress_is_idempotent(mock_seq, mock_branch, mock_docs, mock
     })
     assert resp.status_code == 200
     assert _count("st-2") == 1          # still exactly one task
-    assert mock_enqueue.call_count == 1  # analyst NOT re-enqueued
+    assert mock_enqueue.call_count == 1  # analyst NOT re-enqueued (busy-guard)
+
+
+@patch("src.webhooks.plane.add_comment", create=True)
+@patch("src.webhooks.plane.enqueue_job")
+@patch("src.webhooks.plane._create_initial_docs", new_callable=AsyncMock)
+@patch("src.webhooks.plane._create_gitea_branch", new_callable=AsyncMock)
+@patch("src.plane_sync.fetch_issue_sequence_id", return_value=5)
+def test_inprogress_from_needs_input_relaunches_analyst(
+    mock_seq, mock_branch, mock_docs, mock_enqueue, mock_comment
+):
+    """Status-only answer-to-questions flow: an existing analysis task whose agent
+    is IDLE (no active job — it went to Needs Input) is returned to In Progress
+    -> the analyst is relaunched to read Slava's fresh comments.
+
+    + double-webhook protection: a second In Progress while the relaunch job is
+    active does NOT relaunch again.
+    """
+    mock_enqueue.return_value = 1
+    # First In Progress: starts the pipeline (creates task + enqueues analyst).
+    _to_in_progress("st-ni")
+    assert _count("st-ni") == 1
+    assert mock_enqueue.call_count == 1
+
+    # The analyst finished and asked questions -> Needs Input. In our model that
+    # means NO active job for the task (enqueue_job is mocked, so no job row).
+    conn = get_db()
+    task_id = conn.execute(
+        "SELECT id FROM tasks WHERE plane_id='st-ni'"
+    ).fetchone()[0]
+    has_job = conn.execute(
+        "SELECT COUNT(*) FROM jobs WHERE task_id=? AND status IN ('queued','running')",
+        (task_id,),
+    ).fetchone()[0]
+    conn.close()
+    assert has_job == 0  # agent idle
+
+    # Slava answers + returns the issue to In Progress (distinct body).
+    resp = client.post("/webhook/plane", json={
+        "event": "issue", "action": "updated",
+        "data": {
+            "id": "st-ni", "name": "A valid backlog item title",
+            "description_stripped": "A sufficiently long description for QG-0.",
+            "project": ENDURO_PLANE_ID,
+            "state": {"id": IN_PROGRESS, "name": "In Progress", "group": "started"},
+        },
+        "activity": {"field": "state", "new_value": IN_PROGRESS, "old_value": "needs-input"},
+    })
+    assert resp.status_code == 200
+    assert _count("st-ni") == 1               # no duplicate task
+    assert mock_enqueue.call_count == 2        # analyst RELAUNCHED
+    assert mock_enqueue.call_args.args[0] == "analyst"
+
+    # Seed an active job for the relaunch, then a SECOND In Progress webhook must
+    # NOT relaunch again (busy-guard against double webhooks).
+    conn = get_db()
+    conn.execute(
+        "INSERT INTO jobs (agent, repo, task_id, status) VALUES (?, ?, ?, 'running')",
+        ("analyst", "enduro-trails", task_id),
+    )
+    conn.commit()
+    conn.close()
+    resp2 = client.post("/webhook/plane", json={
+        "event": "issue", "action": "updated",
+        "data": {
+            "id": "st-ni", "name": "A valid backlog item title",
+            "description_stripped": "A sufficiently long description for QG-0.",
+            "project": ENDURO_PLANE_ID,
+            "state": {"id": IN_PROGRESS, "name": "In Progress", "group": "started"},
+        },
+        "activity": {"field": "state", "new_value": IN_PROGRESS, "old_value": "x-y-z"},
+    })
+    assert resp2.status_code == 200
+    assert mock_enqueue.call_count == 2        # still 2 — busy-guard held