[AGC] Fix arena/fence tracking stalls and recover lost GPU progress (#770)

* [AGC] Fix arena/fence tracking stalls and recover lost GPU progress

Fix several AGC synchronization issues that could leave GPU work
unsubmitted or fences permanently unsatisfied:

- Recover fence writes missed during arena transitions by tracking
  closed arena tails and resweeping unresolved fence locations.
- Fix chunk submission accounting so only actually parsed ranges are
  considered submitted, avoiding missed orphan recovery.
- Extend arena sweeps to follow chained command ranges without
  duplicate submissions.
- Preserve GPU state tracking across native worker memory wrappers by
  using canonical guest memory identity.
- Fix builder-ring orphan submissions and stale ring-tail waits.
- Improve frame cycling by handling arena reuse, cursor regression,
  and transiently unavailable builder headers.
- Record conditional DCB execution (IT_COND_EXEC) instead of
  silently dropping the packet.

These changes improve AGC progress tracking and prevent GPU fence
starvation/deadlocks on titles relying on builder arenas and indirect
command chains.

* chore: trigger CI

.gitignore

@@ -42,4 +42,6 @@ ehthumbs.db
 
 .vs/
 .idea/
-.vscode/
+.vscode/
+clean_test/
+.debug/