fix(qg): find 14-deploy-log.md in origin/main when absent in feature worktree

ET-013: deployer writes 14-deploy-log.md and merges deploy artifacts into
main via a separate PR, so the log lands in origin/main, not the feature
branch worktree that check_deploy_status reads via _repo_path(repo, branch).
Result: every successful deploy was falsely failed (Deploy log not found)
and rolled back deploy->development.

Fix: when the log is absent in the worktree, fall back to reading it from
origin/main on the shared clone (git fetch origin main + git show
origin/main:docs/work-items/<WI>/14-deploy-log.md). Lookup order:
worktree -> origin/main -> not found. Fetch/show failures degrade to
not found (never raise). Does not touch the merge-gate in gitea.py.

Tests: origin/main SUCCESS->PASS (ET-013 case), origin/main FAILED->FAILED,
absent everywhere->not found, fetch failure->degrades no exception,
worktree log short-circuits main lookup.

tests/test_qg.py

@@ -242,6 +242,65 @@ class TestCheckDeployStatus:
         passed, reason = check_deploy_status("enduro-trails", "ET-011")
         assert passed is False
 
+    # --- ET-013 path-sync fix: log written to origin/main via separate PR ---
+
+    def test_origin_main_success_passes_when_absent_in_worktree(self, monkeypatch):
+        # Deployer merged 14-deploy-log.md into main via a separate PR; it is NOT
+        # in the feature worktree. Gate must recover it from origin/main -> PASS.
+        # (This is the exact ET-013 regression.)
+        monkeypatch.setattr(
+            "src.qg.checks._deploy_log_from_main",
+            lambda repo, wi: "---\ndeploy_status: SUCCESS\nversion: v0.0.5\n---\n\nLive.\n",
+        )
+        passed, reason = check_deploy_status("enduro-trails", "ET-013")
+        assert passed is True
+        assert "SUCCESS" in reason
+
+    def test_origin_main_failed_fails(self, monkeypatch):
+        # A genuine FAILED log in main must still fail.
+        monkeypatch.setattr(
+            "src.qg.checks._deploy_log_from_main",
+            lambda repo, wi: "---\ndeploy_status: FAILED\nversion: v0.0.5\n---\n\nboom.\n",
+        )
+        passed, reason = check_deploy_status("enduro-trails", "ET-013")
+        assert passed is False
+        assert "FAILED" in reason
+
+    def test_absent_everywhere_fails(self, monkeypatch):
+        # Not in worktree and origin/main lookup yields nothing -> not found.
+        monkeypatch.setattr(
+            "src.qg.checks._deploy_log_from_main", lambda repo, wi: None
+        )
+        passed, reason = check_deploy_status("enduro-trails", "ET-013")
+        assert passed is False
+        assert "not found" in reason.lower()
+
+    @patch("src.qg.checks.subprocess.run")
+    @patch("src.qg.checks.os.path.isdir", return_value=True)
+    def test_fetch_failure_degrades_no_exception(self, mock_isdir, mock_run):
+        # git fetch/show raising (e.g. network) must degrade to "not found",
+        # never propagate an exception out of the gate.
+        import subprocess as _sp
+        mock_run.side_effect = _sp.TimeoutExpired(cmd="git", timeout=30)
+        passed, reason = check_deploy_status("enduro-trails", "ET-013")
+        assert passed is False
+        assert "not found" in reason.lower()
+
+    def test_worktree_log_short_circuits_main_lookup(self, setup_work_item_dir, monkeypatch):
+        # If the log IS present in the worktree, origin/main must NOT be consulted.
+        self._write_log(
+            setup_work_item_dir,
+            "---\ndeploy_status: SUCCESS\nversion: v0.0.3\n---\n\nDeployed OK.\n",
+        )
+        called = {"n": 0}
+        def _boom(repo, wi):
+            called["n"] += 1
+            return None
+        monkeypatch.setattr("src.qg.checks._deploy_log_from_main", _boom)
+        passed, reason = check_deploy_status("enduro-trails", "ET-011")
+        assert passed is True
+        assert called["n"] == 0
+
     def test_deploy_stage_qg_is_check_deploy_status(self):
         assert get_qg_for_stage("deploy") == "check_deploy_status"