PR_26175_DELTA_006: add runtime validation harness

docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness-branch-validation.md

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+# PR_26175_DELTA_006 Branch Validation
+
+| Gate | Status | Evidence |
+| --- | --- | --- |
+| Current branch before work | PASS | `main` |
+| Worktree before work | PASS | Clean |
+| Local/origin sync before work | PASS | `0 0` |
+| Team ownership | PASS | Team Delta owns Runtime, Shared JS, API clients, Event systems, Performance, technical debt remediation, and runtime test coverage. |
+| Work branch | PASS | `PR_26175_DELTA_006-runtime-validation-harness` |
+| Scope boundary | PASS | Harness and package script only; no runtime or UI behavior changed. |
+| Project Instructions read | PASS | Every file under `docs_build/dev/ProjectInstructions/` was read before implementation. |
+
+## Merge Approval
+
+PENDING - Current governance requires OWNER approval before merge to `main`.

docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness-manual-validation-notes.md

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+# PR_26175_DELTA_006 Manual Validation Notes
+
+## Manual Review
+
+- Confirmed the harness maps DELTA_001 through DELTA_005 to targeted automated test files.
+- Confirmed no runtime implementation, UI, browser-owned data, Local API/Local DB behavior, or status bar files changed.
+- Confirmed no fake-login, MEM DB, local-mem, silent fallback, or hidden default behavior was introduced.
+
+## Manual Validation
+
+PASS - Code review found the change limited to validation orchestration and package script exposure.
+
+## Follow-Up
+
+- PR_26175_DELTA_007 should add deeper API client regression coverage after PR_006 is merged and `main` is verified.

docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness-requirement-checklist.md

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+# PR_26175_DELTA_006 Requirement Checklist
+
+| Requirement | Status | Notes |
+| --- | --- | --- |
+| Team Delta ownership only | PASS | Runtime validation harness is Delta-owned. |
+| One PR purpose only | PASS | Adds one targeted Delta runtime validation harness. |
+| No UI changes unless required | PASS | No UI files changed. |
+| No browser-owned product data | PASS | No product data or browser storage contract changed. |
+| No fake-login, MEM DB, local-mem, silent fallback, or hidden defaults | PASS | Harness invokes existing tests only and adds no data-source fallback. |
+| DEV terminology current direction | PASS | No deprecated data-source terminology introduced. |
+| Required reports | PASS | Summary, branch validation, checklist, validation lane, manual notes, Codex diff, changed-file list, and ZIP are included. |
+| Targeted automated validation | PASS | `npm run test:delta-runtime` passed. |
+| Full samples smoke skipped by default | PASS | Full samples smoke was not run. |
+| Legacy `test:workspace-v2` avoided | PASS | Narrower Delta harness exists, so the legacy command was not used. |
+
+## Compatibility Notes
+
+- Existing individual test files remain directly runnable.
+- The new package script only aggregates targeted existing lanes.

docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness-validation.md

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+# PR_26175_DELTA_006 Validation Lane
+
+## Commands
+
+```powershell
+node --check scripts/run-delta-runtime-validation.mjs
+npm run test:delta-runtime
+git diff --check
+```
+
+## Results
+
+| Command | Status |
+| --- | --- |
+| `node --check scripts/run-delta-runtime-validation.mjs` | PASS |
+| `npm run test:delta-runtime` | PASS |
+| `git diff --check` | PASS |
+
+## Browser Validation
+
+SKIP - No browser UI files changed.
+
+## Playwright Validation
+
+SKIP - No UI or browser runtime changed; the narrower Node harness is the relevant validation lane.
+
+## Full Samples Smoke
+
+SKIP - Not run by default per instruction.

docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness.md

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+# PR_26175_DELTA_006-runtime-validation-harness
+
+## Summary
+
+Team Delta added a targeted validation harness for the already-merged DELTA_001 through DELTA_005 workstream.
+
+The new `npm run test:delta-runtime` command runs the exact automated lanes that prove the runtime tick optimization, replay clone consolidation, API client standardization, runtime event coverage, and runtime event clone cleanup remain testable without invoking full samples smoke or broad Workspace V2 validation.
+
+## Scope
+
+- Team: Delta
+- Purpose: Runtime validation harness only
+- Script added: `scripts/run-delta-runtime-validation.mjs`
+- Package script added: `test:delta-runtime`
+- Runtime code changed: none
+- UI changed: none
+- Browser-owned product data changed: none
+
+## Harness Coverage
+
+| Delta work | Targeted lane |
+| --- | --- |
+| DELTA_001 runtime tick optimization | `tests/engine/RuntimeTickLoop.test.mjs` |
+| DELTA_002 replay clone consolidation | `tests/replay/ReplaySystem.test.mjs` |
+| DELTA_003 API client standardization | `tests/dev-runtime/ServerApiClientStandardization.test.mjs` |
+| DELTA_004 runtime event coverage | `tests/engine/RuntimeEventSystem.test.mjs` |
+| DELTA_005 runtime event clone cleanup | `tests/engine/RuntimeTriggerProcessing.test.mjs` |
+| DELTA_005 action/event integration | `tests/engine/RuntimeActionSystem.test.mjs` |
+| Delta closeout regression | `tests/final/FinalSystems.test.mjs` |
+
+## Backlog Update
+
+SKIP - This OWNER-assigned follow-up adds validation harnessing for completed Delta work and does not change a backlog source item.
+
+## Tool State Update
+
+SKIP - No Build Path tool status or tool tile state changed.
+
+## Validation Summary
+
+PASS - `npm run test:delta-runtime` passed all seven targeted lanes.
+
+See `PR_26175_DELTA_006-runtime-validation-harness-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

@@ -1,10 +1,9 @@
-docs_build/dev/ProjectInstructions/backlog/BACKLOG_MASTER.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/PR_26175_DELTA_006-runtime-validation-harness-branch-validation.md
+docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness-manual-validation-notes.md
+docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness-requirement-checklist.md
+docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness-validation.md
+docs_build/dev/reports/PR_26175_DELTA_006-runtime-validation-harness.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
+package.json
+scripts/run-delta-runtime-validation.mjs