diff --git a/.wolf/buglog.json b/.wolf/buglog.json
index 92292027..4dca5a9f 100644
--- a/.wolf/buglog.json
+++ b/.wolf/buglog.json
@@ -16804,6 +16804,31 @@
         "4f44a689"
       ],
       "record": ".wolf/bugs/bug-1901.md"
+    },
+    {
+      "id": "bug-1902",
+      "status": "cannot-reproduce",
+      "status_updated": "2026-10-01",
+      "status_note": "seen once during task 4.3; passed 5 subsequent runs",
+      "component": "harness",
+      "severity": "noise",
+      "timestamp": "2026-10-01T11:22:43Z",
+      "last_seen": "2026-10-01T11:22:43Z",
+      "occurrences": 1,
+      "error_message": "harness pty test test_source_missing_file_rejected_with_error timed out once after quit\n\n**Observed:** during task 4.3 of spec job-array-one-based-index, one run of the harness suite under ASAN failed in the pty CLI test:\n```\ntest_test_cli.c: test_source_missing_file_rejected_with_error: FAIL: xce_test did not exit within the harness's safety timeout after 'quit'\n```\n**Expected:** after `quit`, `xce_test` exits within the test's safety timeout and the test passes, as it does in every other run.\n**Impact:** noise: an intermittent false failure of the harness suite; no product impact observed.\n**Found by:** test (harness suite run during task 4.3, 2026-10-01)",
+      "file": "src/harness/testsuite/test_test_cli.c",
+      "root_cause": "TODO: required for fixed/partial",
+      "fix": "TODO: required for fixed/partial\n\nVerification:\n- Test: TODO: name + file; RED before the fix, GREEN after\n- Suites: TODO: suite results and build profile\n- Live: TODO: soak/deploy run, or n/a and why",
+      "tags": [
+        "harness",
+        "test",
+        "flaky",
+        "pty"
+      ],
+      "related_bugs": [],
+      "fix_commits": [],
+      "record": ".wolf/bugs/bug-1902.md",
+      "repro_attempts": "0/5 reruns, 2026-10-01 (4 targeted meson reruns + reviewer full run)"
     }
   ]
 }
diff --git a/.wolf/bugs/bug-1902.md b/.wolf/bugs/bug-1902.md
new file mode 100644
index 00000000..6b76888b
--- /dev/null
+++ b/.wolf/bugs/bug-1902.md
@@ -0,0 +1,53 @@
+---
+id: "bug-1902"
+status: "cannot-reproduce"
+status_updated: "2026-10-01"
+status_note: "seen once during task 4.3; passed 5 subsequent runs"
+component: "harness"
+severity: "noise"
+timestamp: "2026-10-01T11:22:43Z"
+last_seen: "2026-10-01T11:22:43Z"
+occurrences: 1
+files: ["src/harness/testsuite/test_test_cli.c"]
+tags: ["harness", "test", "flaky", "pty"]
+related: []
+repro_attempts: "0/5 reruns, 2026-10-01 (4 targeted meson reruns + reviewer full run)"
+---
+
+# bug-1902: harness pty test test_source_missing_file_rejected_with_error timed out once after quit
+
+## Description
+**Observed:** during task 4.3 of spec job-array-one-based-index, one run of the harness suite under ASAN failed in the pty CLI test:
+```
+test_test_cli.c: test_source_missing_file_rejected_with_error: FAIL: xce_test did not exit within the harness's safety timeout after 'quit'
+```
+**Expected:** after `quit`, `xce_test` exits within the test's safety timeout and the test passes, as it does in every other run.
+**Impact:** noise: an intermittent false failure of the harness suite; no product impact observed.
+**Found by:** test (harness suite run during task 4.3, 2026-10-01)
+
+## Environment
+- OS: no /etc/os-release; Docker container; NixOS kernel; kernel Linux 6.18.33 x86_64
+- libc: glibc 2.42-47 (interpreter /nix/store/wb6rhpznjfczwlwx23zmdrrw74bayxw4-glibc-2.42-47/lib/ld-linux-x86-64.so.2)
+- Toolchain: gcc (GCC) 15.2.0, meson 1.9.1
+- Build: asan (src/build.jai)
+- Code: scheduler-framework @ 1812a80d-dirty (task 4.3 in progress)
+- Deployment: none (harness_unit_test, pty-driven xce_test, no controller)
+
+## Reproduction
+1. `bash src/tools/xce-build.sh harness asan build.jai --jobs 8 --incremental` (runs the harness suite, including `test_test_cli.c` over a pty)
+- Frequency: 1/6 runs, 2026-10-01 (passed in 4 targeted reruns and in the reviewer's run)
+- Evidence: not kept (the failing build log was overwritten by the passing reruns)
+
+## Root cause
+TODO: required for fixed/partial
+
+## Fix
+TODO: required for fixed/partial
+
+## Verification
+- Test: TODO: name + file; RED before the fix, GREEN after
+- Suites: TODO: suite results and build profile
+- Live: TODO: soak/deploy run, or n/a and why
+
+## References
+- Related: none