PR_26175_DELTA_005: clean up runtime event clone debt

docs_build/dev/ProjectInstructions/backlog/BACKLOG_MASTER.md

@@ -249,7 +249,8 @@ Current OWNER clarification:
   - Completion reference: PR_26175_DELTA_001_Runtime_Performance_Optimization.
 - [x] Delta - Engine test coverage improvements
   - Completed by PR_26175_DELTA_004_Runtime_Test_Expansion.
-- [ ] Delta - Event system audit
+- [x] Delta - Event system audit
+  - Completed by PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup.
 - [ ] Delta - Controls runtime framework audit
 - [ ] Delta - Object runtime framework audit
 - [ ] Delta - World runtime framework audit

docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-branch-validation.md

@@ -0,0 +1,15 @@
+# PR_26175_DELTA_005 Branch Validation
+
+| Gate | Status | Evidence |
+| --- | --- | --- |
+| Current branch before work | PASS | `main` after PR_004 merge |
+| Worktree before work | PASS | Clean |
+| Local/origin sync before work | PASS | `0 0` |
+| Team ownership | PASS | Team Delta owns Runtime, Event systems, Shared JS, Performance, and technical debt remediation. |
+| Work branch | PASS | `PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup` |
+| Previous Delta PR closed | PASS | PR_004 was merged and `main` was verified before PR_005 started. |
+| Scope boundary | PASS | Runtime event clone cleanup, focused test update, backlog, and reports only. |
+
+## Instruction Reads
+
+PASS - All files under `docs_build/dev/ProjectInstructions/` were read before the Delta sequence, and updated instructions were reread after pulling latest `main`.

docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-manual-validation-notes.md

@@ -0,0 +1,15 @@
+# PR_26175_DELTA_005 Manual Validation Notes
+
+## Manual Review
+
+- Confirmed the removed local clone helper was replaced with `cloneRuntimeValue(...)`.
+- Confirmed event output clone/freeze expectations remain covered by tests.
+- Confirmed no Theme V2, UI, API client, browser-owned data, or status bar files changed.
+
+## Manual Validation
+
+PASS - Code review found no unrelated runtime behavior change.
+
+## Follow-Up
+
+- The requested five-PR Delta sequence is complete after this PR merges and `main` is verified.

docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-requirement-checklist.md

@@ -0,0 +1,19 @@
+# PR_26175_DELTA_005 Requirement Checklist
+
+| Requirement | Status | Notes |
+| --- | --- | --- |
+| Team Delta ownership only | PASS | Runtime event-system cleanup is Delta-owned. |
+| One PR purpose | PASS | Shared runtime clone adoption in event publishing only. |
+| Preserve backward compatibility | PASS | Event, trigger, action, and final systems validation passed. |
+| Update backlog | PASS | `Delta - Event system audit` marked complete. |
+| Update tool state if applicable | PASS | Not applicable; no tool tile/status changed. |
+| Produce governance reports | PASS | Summary, branch validation, checklist, validation lane, manual notes, Codex diff, changed-file list, and ZIP. |
+| Runtime validation | PASS | Focused runtime tests and final systems test passed. |
+| No unrelated files | PASS | Changes are limited to event runtime cleanup, focused test, backlog, and reports. |
+| No branch deletion | PASS | Source branch retained. |
+
+## Compatibility Notes
+
+- `publishRuntimeEvents(...)` public output shape is unchanged.
+- The shared runtime clone helper keeps the existing JSON fallback path when `structuredClone` is unavailable.
+- PR_005 does not touch status bar, Theme V2, browser-owned data, or unrelated tool runtime code.

docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-validation.md

@@ -0,0 +1,33 @@
+# PR_26175_DELTA_005 Validation Lane
+
+## Commands
+
+```powershell
+node --check src/engine/runtime/runtimeEventSystem.js
+node --check tests/engine/RuntimeEventSystem.test.mjs
+node tests/engine/RuntimeEventSystem.test.mjs
+node tests/engine/RuntimeTriggerProcessing.test.mjs
+node tests/engine/RuntimeActionSystem.test.mjs
+node tests/final/FinalSystems.test.mjs
+git diff --check
+```
+
+## Results
+
+| Command | Status |
+| --- | --- |
+| `node --check src/engine/runtime/runtimeEventSystem.js` | PASS |
+| `node --check tests/engine/RuntimeEventSystem.test.mjs` | PASS |
+| `node tests/engine/RuntimeEventSystem.test.mjs` | PASS |
+| `node tests/engine/RuntimeTriggerProcessing.test.mjs` | PASS |
+| `node tests/engine/RuntimeActionSystem.test.mjs` | PASS |
+| `node tests/final/FinalSystems.test.mjs` | PASS |
+| `git diff --check` | PASS |
+
+## Browser Validation
+
+SKIP - No browser UI files changed.
+
+## Playwright Validation
+
+SKIP - Runtime event technical debt cleanup is covered by focused Node tests.

docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup.md

@@ -0,0 +1,52 @@
+# PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup
+
+## Summary
+
+Team Delta cleaned up runtime event-system clone debt by moving event publishing onto the shared runtime clone helper.
+
+`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.
+
+## Scope
+
+- Team: Delta
+- Backlog item: `Delta - Event system audit`
+- Runtime file changed: `src/engine/runtime/runtimeEventSystem.js`
+- Test file changed: `tests/engine/RuntimeEventSystem.test.mjs`
+- Backlog updated: `docs_build/dev/ProjectInstructions/backlog/BACKLOG_MASTER.md`
+
+## Runtime Impact
+
+PASS - Event publishing behavior remains backward compatible.
+
+- Published event payloads are still cloned before output.
+- Runtime event output records remain frozen.
+- Existing event, trigger, action, and final systems validation continues to pass.
+- Runtime event cloning now uses the same shared clone path as other Delta runtime consolidation work.
+
+## Backlog Update
+
+PASS - `Delta - Event system audit` is marked complete with this PR as the completion reference.
+
+## Team Delta Sequence Completion
+
+| PR | Status | Result |
+| --- | --- | --- |
+| `PR_26175_DELTA_001_Runtime_Performance_Optimization` | PASS | Merged to `main`. |
+| `PR_26175_DELTA_002_Shared_Runtime_Consolidation` | PASS | Merged to `main`. |
+| `PR_26175_DELTA_003_API_Client_Standardization` | PASS | Merged to `main`. |
+| `PR_26175_DELTA_004_Runtime_Test_Expansion` | PASS | Merged to `main`. |
+| `PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup` | PASS | Prepared for validation and merge. |
+
+## Tool State Update
+
+SKIP - No Build Path tool status or tool tile state changed.
+
+## Validation Summary
+
+PASS - Focused runtime event, trigger, action, and final systems validation completed.
+
+See `PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-validation.md` for command details.
+
+## Branch Disposition
+
+Source branch should be retained after merge unless OWNER later approves branch deletion.

docs_build/dev/reports/codex_changed_files.txt

@@ -1,9 +1,10 @@
 docs_build/dev/ProjectInstructions/backlog/BACKLOG_MASTER.md
-docs_build/dev/reports/PR_26175_DELTA_004_Runtime_Test_Expansion-branch-validation.md
-docs_build/dev/reports/PR_26175_DELTA_004_Runtime_Test_Expansion-manual-validation-notes.md
-docs_build/dev/reports/PR_26175_DELTA_004_Runtime_Test_Expansion-requirement-checklist.md
-docs_build/dev/reports/PR_26175_DELTA_004_Runtime_Test_Expansion-validation.md
-docs_build/dev/reports/PR_26175_DELTA_004_Runtime_Test_Expansion.md
+docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-branch-validation.md
+docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-manual-validation-notes.md
+docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-requirement-checklist.md
+docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup-validation.md
+docs_build/dev/reports/PR_26175_DELTA_005_Runtime_Technical_Debt_Cleanup.md
 docs_build/dev/reports/codex_changed_files.txt
 docs_build/dev/reports/codex_review.diff
+src/engine/runtime/runtimeEventSystem.js
 tests/engine/RuntimeEventSystem.test.mjs