fix(projekt-matching): break infinite alert loop (issue 2)

Root cause chain (evidence: 25+ failed traces on nproj/3022414):
straight quote in page text ends the guided-decoding JSON string
early -> grammar deadlock -> whitespace loop until context/token
limit -> chat_json fails 3x (~35 min) -> IMAP conn idles out ->
move_to_trash raises -> mail never trashed -> reprocessed forever.

- ingest/mailer: MailBox.ensure_alive() reconnect before finalize;
  move_to_trash failure falls back to flag_checked, run continues
- stages: page_text() feeds only div.content minus skill-tag cloud
  to the LLM and maps quote chars to apostrophes (the actual
  degeneration trigger, live-verified: extract now OK in 21 s)
- llm: requirements maxItems 40; max_tokens 8192 caps degenerate
  runs at ~100 s instead of ~10 min

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

projekt-matching/tests/test_ingest.py

@@ -156,6 +156,63 @@ def test_close_called_even_if_unchecked_uids_raises(tmp_path):
     box.close.assert_called_once()
 
 
+def test_ensure_alive_called_before_finalize(tmp_path):
+    mails = {"1": mail("Mail", PROJECT_HTML)}
+    summary, box, sent = run(tmp_path, mails,
+                             dispatch_result={"status": "failed",
+                                              "error": "Read timed out"})
+    names = [c[0] for c in box.method_calls]
+    assert "ensure_alive" in names
+    assert names.index("ensure_alive") < names.index("move_to_trash")
+    box.move_to_trash.assert_called_once_with("1")
+    assert len(sent) == 1
+
+
+def test_trash_failure_falls_back_to_flag_and_continues(tmp_path):
+    mails = {"1": mail("Mail A", PROJECT_HTML),
+             "2": mail("Mail B", PROJECT_HTML)}
+    box = mock.Mock()
+    box.unchecked_uids.return_value = ["1", "2"]
+    box.fetch.side_effect = lambda uid: mails[uid]
+    box.move_to_trash.side_effect = [OSError("socket error: EOF"), None]
+    espo = mock.Mock()
+    espo.find_opportunity_by_link.return_value = None
+    with mock.patch("projektmatch.ingest.mailparse.bodies",
+                    side_effect=lambda m: (m["html"], "")), \
+         mock.patch("projektmatch.ingest.mailer.send_mail", lambda *a: None):
+        summary = ingest.run_ingest(
+            cfg(tmp_path), mailbox=box, espo=espo,
+            resolve=lambda url: "https://www.freelancermap.de/projekt/eins",
+            dispatch=lambda item: {"status": "created"})
+    assert summary["trashFailed"] == 1
+    assert summary["created"] == 2
+    box.flag_checked.assert_called_once_with("1")
+    assert box.move_to_trash.call_count == 2
+
+
+def test_dead_connection_everywhere_still_finishes_run(tmp_path):
+    mails = {"1": mail("Mail A", PROJECT_HTML),
+             "2": mail("Mail B", PROJECT_HTML)}
+    box = mock.Mock()
+    box.unchecked_uids.return_value = ["1", "2"]
+    box.fetch.side_effect = lambda uid: mails[uid]
+    box.ensure_alive.side_effect = OSError("server unreachable")
+    box.move_to_trash.side_effect = OSError("socket error: EOF")
+    box.flag_checked.side_effect = OSError("socket error: EOF")
+    espo = mock.Mock()
+    espo.find_opportunity_by_link.return_value = None
+    with mock.patch("projektmatch.ingest.mailparse.bodies",
+                    side_effect=lambda m: (m["html"], "")), \
+         mock.patch("projektmatch.ingest.mailer.send_mail", lambda *a: None):
+        summary = ingest.run_ingest(
+            cfg(tmp_path), mailbox=box, espo=espo,
+            resolve=lambda url: "https://www.freelancermap.de/projekt/eins",
+            dispatch=lambda item: {"status": "created"})
+    assert summary["trashFailed"] == 2
+    assert summary["created"] == 2
+    box.close.assert_called_once()
+
+
 def test_parse_run_result_finds_status_json():
     inner = json.dumps({"status": "created", "mustMatch": 90})
     payload = {"outputs": [{"outputs": [{"results": {"text": {