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| 1 | +# PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup |
| 2 | + |
| 3 | +## Summary |
| 4 | + |
| 5 | +Team Delta cleaned up runtime event-system clone debt by moving event publishing onto the shared runtime clone helper. |
| 6 | + |
| 7 | +`runtimeEventSystem.js` now uses `cloneRuntimeValue(...)` from `src/shared/runtime/snapshotClone.js`, removing its local JSON clone helper. The runtime event test now covers the shared-helper fallback path with `structuredClone` unavailable. |
| 8 | + |
| 9 | +## Scope |
| 10 | + |
| 11 | +- Team: Delta |
| 12 | +- Backlog item: `Delta - Event system audit` |
| 13 | +- Runtime file changed: `src/engine/runtime/runtimeEventSystem.js` |
| 14 | +- Test file changed: `tests/engine/RuntimeEventSystem.test.mjs` |
| 15 | +- Backlog updated: `docs_build/dev/ProjectInstructions/backlog/BACKLOG_MASTER.md` |
| 16 | + |
| 17 | +## Runtime Impact |
| 18 | + |
| 19 | +PASS - Event publishing behavior remains backward compatible. |
| 20 | + |
| 21 | +- Published event payloads are still cloned before output. |
| 22 | +- Runtime event output records remain frozen. |
| 23 | +- Existing event, trigger, action, and final systems validation continues to pass. |
| 24 | +- Runtime event cloning now uses the same shared clone path as other Delta runtime consolidation work. |
| 25 | + |
| 26 | +## Backlog Update |
| 27 | + |
| 28 | +PASS - `Delta - Event system audit` is marked complete with this PR as the completion reference. |
| 29 | + |
| 30 | +## Team Delta Sequence Completion |
| 31 | + |
| 32 | +| PR | Status | Result | |
| 33 | +| --- | --- | --- | |
| 34 | +| `PR_26175_DELTA_001_Runtime_Performance_Optimization` | PASS | Merged to `main`. | |
| 35 | +| `PR_26175_DELTA_002_Shared_Runtime_Consolidation` | PASS | Merged to `main`. | |
| 36 | +| `PR_26175_DELTA_003_API_Client_Standardization` | PASS | Merged to `main`. | |
| 37 | +| `PR_26175_DELTA_004_Runtime_Test_Expansion` | PASS | Merged to `main`. | |
| 38 | +| `PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup` | PASS | Prepared for validation and merge. | |
| 39 | + |
| 40 | +## Tool State Update |
| 41 | + |
| 42 | +SKIP - No Build Path tool status or tool tile state changed. |
| 43 | + |
| 44 | +## Validation Summary |
| 45 | + |
| 46 | +PASS - Focused runtime event, trigger, action, and final systems validation completed. |
| 47 | + |
| 48 | +See `PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-validation.md` for command details. |
| 49 | + |
| 50 | +## Branch Disposition |
| 51 | + |
| 52 | +Source branch should be retained after merge unless OWNER later approves branch deletion. |
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