phase: 107_git_full_history_dates

All green — verification complete. Final report:

**Phase 107 — final verification pass (all tasks already in `complete/`)**

- **Verified:** `clone_or_pull` full-history fix (no `--depth` clone; `--is-shallow-repository` probe → one-time `git fetch --unshallow` self-heal → `git pull --ff-only`; D12 fail-loud) in `scripts/git_sync.py`; E2E suite `tests/e2e/test_git_source_dates.py` present; all five stale shallow/tip-date narratives corrected (no residual claims repo-wide; `docs_push.py` `--depth` fetches untouched as designed).
- **Unit+integration:** `uv run pytest tests/unit/test_git_sync.py tests/integration/test_git_file_dates.py tests/integration/test_import_docs_git.py tests/integration/test_sync_api.py -v --no-cov` → **66 passed** (D10 tip-date test replaced by `test_url_clone_yields_true_per_file_dates` + `test_existing_shallow_checkout_self_heals`; unit pins: clone argv w/o `--depth`, probe→unshallow→pull order, unshallow-failure → `GitSyncError`).
- **New E2E in isolation:** `uv run pytest tests/e2e/test_git_source_dates.py -v --no-cov` → **4 passed** (old file 2020-06-15 ≠ tip file 2024-06-15 in `GET /api/docs`, Sources `Created`/`Updated` columns, viewer `Created` badge ISO title; folder `updated_at` subtree maxes).
- **Phase-106 regressions in isolation:** `test_document_dates.py` → 6 passed; `test_sync_button.py` → 3 passed; `test_git_sources_admin.py` → 6 passed.
- **Full gates:** `uv run pytest` → **2302 passed**; `uv run pytest --cov=app --cov-report=term-missing` → **TOTAL 99%** (>90%); `uv run ruff check . && uv run pyright` → **clean, 0 errors**.
- **Completion criteria:** 1 ✅ non-shallow URL clone + true per-file dates · 2 ✅ self-heal / plain-pull / fail-loud · 3 ✅ both suites green, bug-pin replaced · 4 ✅ E2E green in isolation · 5 ✅ all regressions + full suite + coverage + lint · 6 ✅ narratives corrected · 7 — no commit made (harness override: changes left in working tree; task files already in `complete/`).
- **No defects found; no deviations.** Next pending phase: **108_history_wire_check**.

tests/integration/test_git_file_dates.py

@@ -1,21 +1,26 @@
 """Integration: phase 106 task 03 — ``file_commit_dates`` against real
-git scratch repos (D2/D10).
+git scratch repos (D2; phase 107 D11 supersedes phase 106 D10).
 
 Builds scratch repositories with controlled ``GIT_COMMITTER_DATE``s
 (the 2026-09-13 verification recipe: file ``a.md`` committed once in
 2020, file ``b.md`` committed in 2020 and touched again in 2024, a
 ``docs/deep.md`` subdirectory file committed once in 2020) and pins
-the VERIFIED checkout behavior:
+the VERIFIED checkout behavior (phase 107):
 
-* a LOCAL-PATH ``clone_or_pull`` keeps FULL history (git's own
-  "--depth is ignored in local clones" warning — the ``--depth 1``
-  flag stays, D10) → TRUE per-file last-commit dates (first-sighting
-  wins: ``a.md`` 2020, ``b.md`` 2024, ``docs/deep.md`` 2020);
-* a shallow URL-transport clone (``file://``, made directly in this
-  test — the test harness, not ``clone_or_pull``, makes this one) →
-  the TIP commit's date for EVERY working-tree file (the
-  shallow-boundary property, D10: uniform per repo, real across
-  repos);
+* a LOCAL-PATH ``clone_or_pull`` checkout is FULL history → TRUE
+  per-file last-commit dates (first-sighting wins: ``a.md`` 2020,
+  ``b.md`` 2024, ``docs/deep.md`` 2020);
+* a URL-TRANSPORT (``file://``) ``clone_or_pull`` checkout is FULL
+  history TOO (D11: no ``--depth`` on the clone) → the SAME true
+  per-file dates — the regression pin for the 2026-09-16 bug
+  (pre-fix, D10's shallow ``--depth 1`` clone returned the TIP date
+  for EVERY file, uniform per repo);
+* an EXISTING shallow checkout (made ``--depth 1`` directly by the
+  test harness — simulating every pre-phase-107 deployed checkout)
+  self-heals on the next ``clone_or_pull``: the
+  ``--is-shallow-repository`` probe finds it shallow → ``git fetch
+  --unshallow`` → ``git pull --ff-only`` → no longer shallow, true
+  per-file dates;
 * fail-soft: a directory without ``.git``, an empty repo (no
   commits), a git failure, and a malformed log output all yield
   ``{}`` — a date walk must never break a sync (the importer, task
@@ -39,6 +44,7 @@ from scripts.git_sync import (
     _parse_commit_dates,  # pyright: ignore[reportPrivateUsage]
     clone_or_pull,
     file_commit_dates,
+    run_git,
 )
 
 
@@ -103,10 +109,10 @@ def scratch_repo(tmp_path: Path) -> Path:
 
 
 def test_local_clone_yields_true_per_file_dates(scratch_repo: Path, tmp_path: Path) -> None:
-    """(a) LOCAL-PATH ``clone_or_pull`` → full history (git warns
-    "--depth is ignored in local clones" and does not shallow) → TRUE
-    per-file last-commit dates: the first (newest) sighting of each
-    path wins — ``b.md`` the 2024 touch, the rest the 2020 commit."""
+    """(a) LOCAL-PATH ``clone_or_pull`` → full history (no ``--depth``
+    at all, phase 107 D11) → TRUE per-file last-commit dates: the
+    first (newest) sighting of each path wins — ``b.md`` the 2024
+    touch, the rest the 2020 commit."""
     dest = tmp_path / "local"
     clone_or_pull(str(scratch_repo), dest)
     assert (dest / ".git").exists()  # a real checkout
@@ -117,21 +123,61 @@ def test_local_clone_yields_true_per_file_dates(scratch_repo: Path, tmp_path: Pa
     }
 
 
-def test_shallow_file_clone_yields_tip_date_for_every_file(
-    scratch_repo: Path, tmp_path: Path
-) -> None:
-    """(b) SHALLOW URL-TRANSPORT clone (``file://``, made directly in
-    the test — D10): in a shallow clone git reports the TIP commit as
-    every existing file's last commit (the shallow boundary is each
-    file's history root) → EVERY working-tree file carries the tip
-    date, uniform within the repo."""
+def test_url_clone_yields_true_per_file_dates(scratch_repo: Path, tmp_path: Path) -> None:
+    """(b) URL-TRANSPORT ``clone_or_pull`` (``file://`` through the REAL
+    function — the 2026-09-16 regression pin): the checkout is FULL
+    history (no ``--depth`` — phase 107 D11 supersedes phase 106 D10)
+    → NOT shallow, and TRUE per-file last-commit dates: the 2020 files
+    stay 2020 and ``b.md`` (touched again at the tip) gets the 2024
+    tip date. PRE-FIX this returned DATE_B (the uniform tip date) for
+    all three files — the exact bug the owner reported.
+    """
+    dest = tmp_path / "url-clone"
+    clone_or_pull(f"file://{scratch_repo}", dest)
+    assert (dest / ".git").exists()  # a real checkout
+    assert (
+        run_git(["git", "rev-parse", "--is-shallow-repository"], cwd=dest).strip()
+        == "false"
+    )  # a full-history checkout, not shallow
+    assert file_commit_dates(dest) == {
+        "a.md": DATE_A,
+        "b.md": DATE_B,  # touched again by the tip commit
+        "docs/deep.md": DATE_A,
+    }
+
+
+def test_existing_shallow_checkout_self_heals(scratch_repo: Path, tmp_path: Path) -> None:
+    """(c) an EXISTING shallow checkout — built ``--depth 1`` directly
+    by the harness, simulating every pre-phase-107 deployed checkout
+    (live + dev homelab included) — self-heals on the next
+    ``clone_or_pull`` (D11): the ``--is-shallow-repository`` probe
+    finds it shallow → the ONE-TIME ``git fetch --unshallow`` restores
+    the full history (no re-clone) → the usual ``--ff-only`` pull. Pre-
+    heal: shallow + the uniform tip date for all files; post-heal:
+    full history + true per-file dates."""
     dest = tmp_path / "shallow"
     _git(tmp_path, "clone", "-q", "--depth", "1", f"file://{scratch_repo}", str(dest))
+    # Pre-heal: the deployed state the fix must cure.
+    assert (
+        run_git(["git", "rev-parse", "--is-shallow-repository"], cwd=dest).strip()
+        == "true"
+    )
     assert file_commit_dates(dest) == {
         "a.md": DATE_B,
         "b.md": DATE_B,
         "docs/deep.md": DATE_B,
     }
+    clone_or_pull(f"file://{scratch_repo}", dest)
+    # Post-heal: full history and true per-file dates, same as (b).
+    assert (
+        run_git(["git", "rev-parse", "--is-shallow-repository"], cwd=dest).strip()
+        == "false"
+    )
+    assert file_commit_dates(dest) == {
+        "a.md": DATE_A,
+        "b.md": DATE_B,
+        "docs/deep.md": DATE_A,
+    }
 
 
 def test_directory_without_dotgit_fails_soft(tmp_path: Path) -> None: