Govern task context and advance execution pointer

docs/status/M14-04H.md

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+# M14-04H Status
+
+status: done
+task: Chromium keyboard-only, accessible names/roles and focus restoration
+updated: 2026-08-19 America/New_York
+enablingTask: false
+parityStateChange: false
+
+## Scope
+
+The Chromium keyboard gate runs real main-thread and OffscreenCanvas pages. Tab reaches the File
+menu, Enter opens it with menuitem focus, Escape restores the trigger, and F3 opens Operator Search
+with Escape restoring its trigger. The checker also scans visible interactive elements for an
+accessible name and records the count per backend.
+
+## Evidence
+
+- `npm --prefix web run build` passed.
+- `npm --prefix web run test:chromium-accessibility` passed for both production backends.
+- Checker output: `chromium-accessibility-ok backends=main,offscreen menuFocus=RESTORED operatorSearchFocus=RESTORED names=COMPLETE execution=DISABLED next=M15-01A`.
+- `npm --prefix web run typecheck` and `git diff --check` passed.
+
+## Artifact Hashes
+
+- parent manifest: `a5a80cedd824cc4aac27bd2cec39e11560d4cf3207ab947a1abe19c8bb9e053f`
+- checker: `b39cdef61007e5ac1f2e7686ccdffd42f6b9723b2e93a7bd63e46800c4453ced`
+- app: `5861988f3dfbb8c05d36aee3033a72514de53a0cb4ec6f3d832418ef6b5cc8b2`
+- CSS: `5961164f29e25b461c03201534fe56e32020633cac6c0970e149a58ba9f6e9fc`
+- reference e2e: `e74a53a1f9e9bfea73be8da1de486938d0dcc4718e7585b57bee27a5ce78a978`
+- report: `508adab3c6ced83c95bcced36d610c20f2f2fd456637cb79568b4b824d66ead9`
+- manifest: `2c4e4323250f3426f610babb42978ba36c48e471729b20b0ce8f3483eb6f899c`
+
+## Next Task
+
+`M15-01A`: generate a Blender 5.2 RNA data-block type inventory.
+
+## Rollback
+
+Remove the accessibility checker, accessible-name fix, report, manifest, package command and this
+status/task entry; restore `M14-04G` as the queue tail.