Add the missing workflow validation example and keep the #1039 TDD regression active by removing the expected-fail tag and updating scenario narrative.\n\nTo satisfy the required full quality gates, stabilize flaky integration behavior encountered during this issue run: use a shared SQLAlchemy session in resource DAG scripts, isolate RxPY validation temp paths per test run, extend transient subprocess timeouts/retry behavior, and clear stale pabot worker artifacts before integration runs so repeated nox executions are reliable.\n\nISSUES CLOSED: #1039

@@ -762,3 +762,1 @@
-    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=60s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1
-    Remove File    ${temp_file}
-    # Check if process failed and log stderr if present
+    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=180s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1

@@ -83,3 +83,3 @@
         capture_output=True,
         text=True,
-        timeout=30,
+        timeout=120,

@@ -13,18 +13,20 @@ Link Child And Verify Tree
     ...    import json
     ...    from datetime import datetime, UTC
     ...    from sqlalchemy import create_engine, event
+    ...    from sqlalchemy.pool import StaticPool

@@ -45,0 +45,4 @@
+    # Integration tests are significantly heavier than unit tests and can
+    # become unstable on shared runners when pabot fans out aggressively.
+    # Keep default parallelism conservative (<=2) unless explicitly overridden.
+    pabot_default = min(2, _default_processes())

@@ -762,3 +762,1 @@
-    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=60s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1
-    Remove File    ${temp_file}
-    # Check if process failed and log stderr if present
+    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=180s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1

@@ -83,3 +83,3 @@
         capture_output=True,
         text=True,
-        timeout=30,
+        timeout=120,

@@ -762,3 +762,1 @@
-    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=60s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1
-    Remove File    ${temp_file}
-    # Check if process failed and log stderr if present
+    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=180s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1

@@ -83,3 +83,3 @@
         capture_output=True,
         text=True,
-        timeout=30,
+        timeout=120,

@@ -762,3 +762,1 @@
-    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=60s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1
-    Remove File    ${temp_file}
-    # Check if process failed and log stderr if present
+    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=180s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1

@@ -83,3 +83,3 @@
         capture_output=True,
         text=True,
-        timeout=30,
+        timeout=120,

@@ -45,0 +45,4 @@
+    # Integration tests are significantly heavier than unit tests and can
+    # become unstable on shared runners when pabot fans out aggressively.
+    # Keep default parallelism conservative (<=2) unless explicitly overridden.
+    pabot_default = min(2, _default_processes())

@@ -762,3 +762,1 @@
-    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=60s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1
-    Remove File    ${temp_file}
-    # Check if process failed and log stderr if present
+    ${result}=    Run Process    ${PYTHON}    ${temp_file}    timeout=180s    stderr=STDOUT    env:PYTHONWARNINGS=ignore    env:PYTHONDONTWRITEBYTECODE=1

@@ -83,3 +83,3 @@
         capture_output=True,
         text=True,
-        timeout=30,
+        timeout=120,