fix(api): unconditional /git/file window cap; defer Telegram sends after commit; docs/map periodic re-index

_compute_file_range now caps any resolved window at _FILE_MAX_LINES
instead of only the exact whole-file shape, closing the near-whole-file
bypass. Telegram sends ride a generalized after-commit outbox
(defer_after_commit over the F107 machinery) so a slow Bot API can no
longer hold the caller's transaction open; TelegramClient grows an
abstract close(). The KB update loop iterates AUTO_INDEX_DIRS so
docs/map edits re-index without a restart. PR-label application
catches all exceptions per its never-raises contract, and pr_merge's
CEO-only message names the resolved branch.

tests/unit/services/test_git.py

@@ -714,6 +714,43 @@ async def test_ensure_base_falls_back_to_default_when_create_fails() -> None:
     assert out == "master"
 
 
+# ---------------------------------------------------------------------------
+# _apply_pr_labels / _ensure_label_exists: never raise, even on a non-httpx
+# error — labeling must not surface as a spurious tool failure after the PR
+# itself was already created.
+# ---------------------------------------------------------------------------
+
+
+def _non_httpx_raising_client() -> MagicMock:
+    """An AsyncClient whose POST raises a plain (non-httpx) exception."""
+    fake_client = MagicMock()
+    fake_client.__aenter__ = AsyncMock(return_value=fake_client)
+    fake_client.__aexit__ = AsyncMock(return_value=False)
+    fake_client.post = AsyncMock(side_effect=RuntimeError("boom"))
+    return fake_client
+
+
+@pytest.mark.asyncio
+async def test_ensure_label_exists_swallows_non_httpx_error() -> None:
+    svc = _service()
+    with patch(
+        "roboco.services.git.httpx.AsyncClient",
+        return_value=_non_httpx_raising_client(),
+    ):
+        await svc._ensure_label_exists("acme", "repo", "tok", "cell/backend")
+
+
+@pytest.mark.asyncio
+async def test_apply_pr_labels_swallows_non_httpx_error() -> None:
+    svc = _service()
+    _bind(svc, "_ensure_label_exists", AsyncMock())
+    with patch(
+        "roboco.services.git.httpx.AsyncClient",
+        return_value=_non_httpx_raising_client(),
+    ):
+        await svc._apply_pr_labels("acme", "repo", "tok", 11, ["cell/backend"])
+
+
 # ---------------------------------------------------------------------------
 # pr_merge: returns merge commit dict
 # ---------------------------------------------------------------------------