Ac Execute

1. Use $ac-memory to validate the active task state structure before execution.
2. Verify PLAN_FROZEN=true and Execution Contract completeness.
3. Set CURRENT_ROLE: executor and keep WORKFLOW_STATUS: active.
4. Change only files listed in Files to change.
5. Follow Steps exactly:

• code tasks run the declared gradlew / device checks
• docs / skills / templates tasks run the declared consistency checks 5.5. Execute one declared step at a time whenever practical; do not silently batch multiple unfinished steps and call them done together. 5.6. After each material step, record the new result in 验收证据（Evidence） or explicitly note why the planned evidence is still pending.

6. When the task changes shared workflow assets, update the coupled documents together so terminology and routing stay in sync.
7. Record results in 验收证据（Evidence） and update Top 3 completion.
8. If the route is single + reviewer or planner -> executor -> reviewer, hand off to $ac-review, which returns control to $ac-workflow after a pass.
9. If the route is pure single, return control to $ac-workflow for summary closeout (CURRENT_ROLE: single, WORKFLOW_STATUS: completed).

Unfreeze fallback (mandatory):

1. Stop execution immediately when new design, scope, or file impact appears.
2. Append a decision log entry with date, decision, and impact.
3. Set PLAN_FROZEN: false, CURRENT_ROLE: planner, and WORKFLOW_STATUS: active.
4. Return to $ac-plan for a new Contract.

Hard rules:

• Do not add design alternatives during execution.
• Do not edit files outside the Contract scope.
• Do not claim checks ran if they did not.
• Do not mark a step complete before its result is reflected in Evidence or explicitly carried as pending verification.
• Do not skip declared checks just because the remaining diff looks small or nearly finished.