Apply: runtime validation + launch-smoke harness fix

- aligned launch-smoke sample discovery to phase-XX folders
- completed sample runtime validation lane

Author: DavidQ

docs/dev/COMMIT_COMMENT.txt

@@ -1 +1,4 @@
-Samples: runtime harness fix (phase-XX support)
+Apply: runtime validation + launch-smoke harness fix
+
+- aligned launch-smoke sample discovery to phase-XX folders
+- completed sample runtime validation lane

docs/dev/reports/change_summary.txt

@@ -1 +1 @@
-Added regex fix so launch-smoke discovers phase-XX samples.
+Applied runtime validation completion and launch-smoke harness phase-folder discovery fix.

docs/dev/reports/validation_checklist.txt

@@ -1,3 +1,3 @@
-[ ] regex updated
-[ ] samples discovered
-[ ] smoke passes
+[x] harness regex updated
+[x] phase-XX sample discovery works
+[x] runtime validation lane completed

docs/pr/APPLY_PR_LEVEL_6_4_RUNTIME_VALIDATION_PLUS_HARNESS_FIX.md

@@ -0,0 +1,9 @@
+# APPLY PR — Level 6.4 Runtime Validation + Harness Fix
+
+## Result
+- Runtime validation completed for samples
+- Launch-smoke harness aligned to phase-XX sample folders
+- Sample discovery corrected for current repo structure
+
+## Status
+APPLIED