diff --git a/.github/instructions/test.instructions.md b/.github/instructions/test.instructions.md
index e83b7bb452..26bd1650a4 100644
--- a/.github/instructions/test.instructions.md
+++ b/.github/instructions/test.instructions.md
@@ -35,6 +35,14 @@ Most tests should be unit tests. Integration and end-to-end tests are for testin
 - No network calls should ever happen in unit tests, but file access is okay
 - Unit tests should be fast and can be run in parallel.
 
+## Correctness Test Timeouts
+
+- For unit-test subprocesses whose timeout only prevents a hang, use `TEST_WATCHDOG_SECONDS` from `unit.async_utils` rather than a short wall-clock deadline. The shared watchdog allows for startup, filesystem, and scheduling delays on busy CI workers; it is not an expected runtime.
+- Use the same watchdog for thread-barrier rendezvous that test concurrency correctness, not worker startup speed. Keep the barrier and assertions that require distinct workers.
+- Preserve intentional performance limits, operation deadlines, timeout/cancellation assertions, and JavaScript VM execution limits. Do not increase them merely to make a test pass.
+- For a single `node:test` suite that does not need child-process isolation, run `node --test-reporter=tap <suite>` without `--test` to avoid an extra Node process. Preserve fresh subprocesses where isolation is part of the test contract, such as import guards.
+- Still require a successful process exit and, for Node suites, a positive collected-test count with every collected test passing. A longer watchdog must not hide failures, skipped tests, or an empty suite.
+
 ## Integration Test Rules
 
 - Mark with `@pytest.mark.run_only_if_all_tests` (skipped unless `RUN_ALL_TESTS=true`)
diff --git a/doc/contributing/4_running_tests.md b/doc/contributing/4_running_tests.md
index 2606b9eada..aa4b11ddc0 100644
--- a/doc/contributing/4_running_tests.md
+++ b/doc/contributing/4_running_tests.md
@@ -58,14 +58,30 @@ cancellation when a matrix job has already failed. The CodeQL job needs
 Fork PRs use native CodeQL publishing and GitHub's read-only fork token policy.
 
 Run the deterministic, offline regression coverage with Node.js installed.
-The pytest entry point runs the Node scenario tests and checks workflow wiring:
+The pytest entry point runs the Node scenario tests and checks workflow wiring.
+It runs `node:test` in a single Node process, with the shared 300-second correctness
+watchdog to allow for startup and filesystem delays on busy Windows runners.
+The watchdog is a hang backstop, not a performance requirement; API calls and
+polling delays remain mocked.
 
 ```bash
 uv run --frozen pytest tests/unit/build_scripts/test_codeql_merge_group.py -q
 ```
 
 The helper's scenarios can also run directly with
-`node --test tests/unit/build_scripts/test_codeql_merge_group.cjs`.
+`node --test-reporter=tap tests/unit/build_scripts/test_codeql_merge_group.cjs`.
+
+The documentation JavaScript suites in `test_docs_javascript.py` also use one
+Node process per suite and the shared correctness watchdog. Their per-VM
+execution limits remain unchanged.
+
+The Bash deployment helper in `test_code_deployment.py` uses the same shared
+watchdog for subprocess completion. Readiness and rollback tests retain their
+simulated operation deadlines, polling assertions, and signal exit-code checks.
+
+The seeded-converter worker-thread test also uses the shared watchdog for its
+two-worker barrier. It still requires distinct random generators and identical
+seeded draws; worker startup speed is not part of that contract.
 
 ## Running a subset while iterating
 
@@ -84,6 +100,10 @@ release any test-controlled waits and join their tasks before removing mocks or
 disposing fixtures, including when a watchdog expires. When waiting for a task to
 signal readiness, also watch for that task finishing so an early exception is not
 hidden by the readiness timeout.
+The analytics quick-lane capacity test observes request admission and completion
+with these shared watchdogs, then releases its reader gate and drains all requests
+before restoring mocks. Its 503/Retry-After and independent-execution assertions
+remain unchanged.
 Use `wait_for_event_async` to observe readiness and `wait_for_completion_async` to
 observe the outcome, including failures after readiness. Observation timeouts do
 not cancel owned work. Release gates before calling `settle_tasks_async` in `finally`.
diff --git a/tests/unit/backend/test_analytics_routes.py b/tests/unit/backend/test_analytics_routes.py
index 033ede82e4..8e1b6c9e9e 100644
--- a/tests/unit/backend/test_analytics_routes.py
+++ b/tests/unit/backend/test_analytics_routes.py
@@ -43,7 +43,7 @@
     AttackAnalyticsResultsQuery,
     AttackOutcome,
 )
-from unit.async_utils import TEST_WATCHDOG_SECONDS, wait_for_completion_async, wait_for_event_async
+from unit.async_utils import TEST_WATCHDOG_SECONDS, settle_tasks_async, wait_for_completion_async, wait_for_event_async
 from unit.memory.test_attack_analytics import make_result
 
 
@@ -447,18 +447,18 @@ async def blocked_async(**kwargs: object) -> Any:
             asyncio.create_task(analytics_client.post("/api/analytics/attacks/results", json={})) for _ in range(12)
         ]
         try:
-            await asyncio.wait_for(admitted.wait(), 10)
+            await wait_for_event_async(event=admitted, tasks=requests)
             rejected = await analytics_client.post("/api/analytics/attacks/results", json={})
             assert rejected.status_code == 503
             assert rejected.headers["Retry-After"] == "1"
             assert analytics_service.has_active_work
             release.set()
-            responses = await asyncio.wait_for(asyncio.gather(*requests), 30)
+            responses = await wait_for_completion_async(future=asyncio.gather(*requests))
             assert all(response.status_code == 200 for response in responses)
             assert read.await_count == 12
         finally:
             release.set()
-            await asyncio.gather(*requests, return_exceptions=True)
+            await settle_tasks_async(*requests)
 
 
 @pytest.mark.parametrize(
diff --git a/tests/unit/build_scripts/test_codeql_merge_group.py b/tests/unit/build_scripts/test_codeql_merge_group.py
index f6be8d6054..45f203f7b4 100644
--- a/tests/unit/build_scripts/test_codeql_merge_group.py
+++ b/tests/unit/build_scripts/test_codeql_merge_group.py
@@ -4,6 +4,7 @@
 
 from __future__ import annotations
 
+import re
 import subprocess
 from pathlib import Path
 from typing import Any
@@ -11,6 +12,7 @@
 
 import pytest
 import yaml
+from unit.async_utils import TEST_WATCHDOG_SECONDS
 
 REPO_ROOT = Path(__file__).resolve().parents[3]
 CODEQL_PIN = "24c54180a607b1449ed407dd24f251e4e9147c8d"
@@ -42,15 +44,19 @@ def steps() -> dict[str, Any]:
 def test_codeql_merge_group_scenarios(steps: dict[str, Any]) -> None:
     script = steps["Publish merge-group CodeQL results"]["with"]["script"]
     with patch.dict("os.environ", {"CODEQL_TEST_SCRIPT": script}):
+        # Run node:test in-process, without --test's extra child process on busy Windows runners.
         result = subprocess.run(
-            ["node", "--test", "--test-reporter=tap", str(Path(__file__).with_suffix(".cjs"))],
+            ["node", "--test-reporter=tap", str(Path(__file__).with_suffix(".cjs"))],
             cwd=REPO_ROOT,
             capture_output=True,
             text=True,
             check=False,
-            timeout=60,
+            timeout=TEST_WATCHDOG_SECONDS,
         )
     assert result.returncode == 0, result.stdout + result.stderr
+    summary = dict(re.findall(r"^# (tests|pass) (\d+)$", result.stdout, re.MULTILINE))
+    assert int(summary.get("tests", "0")) > 0, result.stdout
+    assert summary.get("pass") == summary["tests"], result.stdout
     assert "# fail 0" in result.stdout and "# skipped 0" in result.stdout
 
 
diff --git a/tests/unit/build_scripts/test_docs_javascript.py b/tests/unit/build_scripts/test_docs_javascript.py
index 01ce6a3445..ed9ed1c96e 100644
--- a/tests/unit/build_scripts/test_docs_javascript.py
+++ b/tests/unit/build_scripts/test_docs_javascript.py
@@ -2,8 +2,8 @@
 # Licensed under the MIT license.
 """Run documentation JavaScript tests with one Node startup per suite.
 
-The Node tests use fresh, time-limited VMs for behavior checks. The process
-deadline allows for slow CI startup, not slow JavaScript execution.
+The Node tests use fresh, time-limited VMs for behavior checks. The shared
+correctness watchdog allows for slow CI startup, not slow JavaScript execution.
 Local environments without Node skip these tests.
 """
 
@@ -13,6 +13,7 @@
 from pathlib import Path
 
 import pytest
+from unit.async_utils import TEST_WATCHDOG_SECONDS
 
 
 @pytest.mark.skipif(shutil.which("node") is None, reason="node not installed")
@@ -22,7 +23,7 @@ def test_docs_javascript(suite: str) -> None:
         ["node", "--test-reporter=tap", str(Path(__file__).with_name(suite))],
         capture_output=True,
         text=True,
-        timeout=60,
+        timeout=TEST_WATCHDOG_SECONDS,
     )
     assert result.returncode == 0, result.stdout + result.stderr
     summary = dict(re.findall(r"^# (tests|pass) (\d+)$", result.stdout, re.MULTILINE))
diff --git a/tests/unit/converter/test_seeded_converter_determinism.py b/tests/unit/converter/test_seeded_converter_determinism.py
index 80952b3e9a..e07309ced0 100644
--- a/tests/unit/converter/test_seeded_converter_determinism.py
+++ b/tests/unit/converter/test_seeded_converter_determinism.py
@@ -7,6 +7,7 @@
 from collections.abc import Callable
 
 import pytest
+from unit.async_utils import TEST_WATCHDOG_SECONDS
 
 from pyrit.common.random_context import configure_random_seed
 from pyrit.converter import (
@@ -134,7 +135,7 @@ async def convert_async(self, *, prompt: str, input_type: PromptDataType = "text
         barrier = threading.Barrier(2)
 
         def draw() -> tuple[random.Random, float]:
-            barrier.wait(timeout=5)
+            barrier.wait(timeout=TEST_WATCHDOG_SECONDS)
             rng = self._get_random_generator(stream="values")
             return (rng, rng.random())
 
diff --git a/tests/unit/infra/test_code_deployment.py b/tests/unit/infra/test_code_deployment.py
index 8c7ba492c2..ba1276ccf4 100644
--- a/tests/unit/infra/test_code_deployment.py
+++ b/tests/unit/infra/test_code_deployment.py
@@ -12,6 +12,8 @@
 import unittest
 from pathlib import Path
 
+from unit.async_utils import TEST_WATCHDOG_SECONDS
+
 REPO_ROOT = Path(__file__).resolve().parents[3]
 PIPELINES = REPO_ROOT / "infra" / "pipelines"
 SUBSCRIPTION = "11111111-1111-1111-1111-111111111111"
@@ -246,7 +248,7 @@ def _run(
             text=True,
             check=False,
             env=environment,
-            timeout=30,
+            timeout=TEST_WATCHDOG_SECONDS,
         )
         assert "Unexpected " not in result.stderr, result.stderr
         return result