Execute

Execute (Antigravity Edition)

Skill-Managed Lifecycle

Apply this skill directly through conversation state and its Markdown record. Plugin availability or external hooks are not prerequisites for this skill. Continue to respect independently enforced runtime restrictions; this instruction does not authorize bypassing them.

• On entry, resume, and after compaction, read this complete entrypoint, every currently required reference, index.md, and every manifest file before substantive work. For a new bundle, read the initialization guidance first, create the bundle, then verify its complete contents.
• Treat compaction recovery as a hard gate, not as optional rereading. Before the first substantive tool call after compaction, recover the active mode, canonical bundle root, and tracker ID from durable state; read and validate the bundle; reconcile open action markers and any completed but unrecorded work; and verify the Active Snapshot, Resume Checkpoint, implementation status, and next safe action. If the exact active bundle cannot be resolved, do not guess from the newest directory: ask for its path and stop substantive work.
• On later turns, reuse current context only while it remains reliable. Reread the Active Snapshot for snapshot-only changes; reread the complete bundle when record content changes outside known writes or its state is uncertain.
• Treat a record write transaction as one coordinated file update: read the affected current files, declare new Markdown files in the manifest, update all affected content and cross-links, then verify identity, metadata, phase links, dependencies, and evidence agree. Finish or repair that update before unrelated mutation, handoff, or a final response. If persistence fails, report the blocker instead of treating unsaved state as durable.
• Before every user-facing response, persist material turn deltas and the resume checkpoint. A genuinely unchanged turn requires only verifying that the saved state remains accurate.
• Keep the exact canonical bundle root and tracker ID in the durable resume instruction and checkpoint so compaction can preserve the recovery key. A compacted conversation summary is context only; the validated bundle is authoritative workflow state.

On adoption or handoff, follow references/intake.md and keep the exact accepted bundle. Persist exit metadata only when the user explicitly exits; implementation completion alone does not exit execute.

Before each bounded mutating work unit, record one action covering its declared paths and source, Git, or external effects:

1. Persist a stable evidence ID and <!-- workflow-action:<ID> status:open --> in evidence.md, its authorization and scope, and the matching active-action summary in index.md.
2. Verify the saved action before performing only the covered mutations. Use one action per complete work unit, not per file or tool call; never carry it into an unrelated goal or materially different scope.
3. Persist terminal evidence with result completed, failed, or blocked, update affected phase and verification files, clear the active-action summary, and replace the open marker with its matching terminal marker before a final response, exit, or unrelated work unit.

If the record becomes unreadable during an action, stop other mutations, repair or restore the record, and reconcile the action evidence before resuming. Recorded scope and evidence never grant authority withheld by the user, plan, or higher-priority instructions.

Use this skill to adopt either an approved plan bundle or an execution-ready discussion bundle as the persistent execution record.

Before any directory change on adoption, capture the user's initial terminal working directory as an absolute path. New and replacement worktrees must be created inside <worktree-anchor>/.worktrees/. Preserve the initial directory for worktree placement under Dedicated Worktree in references/implementation.md; on resume, retain the recorded anchor unless the user explicitly changes it. Repository discovery or a tool's later working-directory override must not replace that anchor.

Execute accepts only workflow-record version 4 bundles and defaults to Durable. Upgrade Lightweight to Durable on adoption and preserve Audited.

Scripted Bundle Updates

Prefer a short Python standard-library script when one record update must coordinate several Markdown files, such as the index, decisions, phase files, and evidence. Use replace_file_content or write_to_file for small local edits when clearer; Python is a preferred method for coordinated multi-file persistence, not a requirement for single-file edits. Keep the existing authorization, decision, and handoff gates unchanged.

• Use a literal script input (for example, a quoted heredoc via run_command in a compatible shell) so Markdown backticks, dollar signs, and newlines are not evaluated by the shell. Use explicit UTF-8 encoding and preserve existing newline style and file permissions.
• Resolve the bound bundle root, use an explicit path allowlist from its manifest plus declared additions, and reject escaping paths or symlink targets. Do not discover mutation targets through a broad recursive glob.
• Read the affected files into a before-snapshot and construct all proposed contents in memory before writing. For replacements, check the expected occurrence count or unique section markers and raise an explicit error on missing or ambiguous matches; never rely on an unchecked .replace() or Python assert for write-safety checks. Preserve unrelated content and skip unchanged files.
• Validate the proposed bundle before the first write: identity, manifest, metadata, links, question mappings, and phase/dependency/evidence consistency where applicable. Keep one writer for the bundle and recheck that source files still match the snapshot before replacement; if they changed, reread and reconcile instead of overwriting.
• For whole-file rewrites, stage complete contents in temporary sibling files and replace each destination with os.replace, writing index.md last. Temporary staging files are not record artifacts; clean up only those created by this operation. Per-file replacement does not make a multi-file bundle atomic. On interruption or failure, inspect which replacements succeeded and repair the coordinated update before continuing; never blindly restore over another writer's changes.
• Read back the saved files, compare them with the intended contents, and revalidate the complete bundle and scoped diff. Report validation failures accurately; successful script exit alone does not prove that the update is consistent.

Reference Routing

Remove a conditional reference from Required references only after its stage and any dependent work have ended; persist and verify the set change under the record persistence contract. After compaction, reread every reference still required.

Load only the reference needed for the current stage, and read it completely before applying it.

• Read references/implementation.md before implementation, tracker amendments, commits, worktree setup, phase scheduling, recovery, or any mutating work unit.
• Read references/completion.md after implementation work is integrated and before claiming completion, simplifying, updating agent docs, offering security review, handling a user-requested PR/MR merge or post-merge worktree cleanup, or sending the final implementation response.
• Read references/intake.md before record validation or adoption.
• Read references/parallel-execution.md before evaluating delegation, dispatching subagents via invoke_subagent, or recovering delegated work.
• Read references/post-merge-cleanup.md before a user-requested PR/MR merge or dedicated-worktree cleanup.
• Read-only adoption and summary turns do not require either implementation reference unless their conditions arise.
• Keep references/intake.md required through adoption or re-entry. For a later read-only summary with no intake or other routed work, Required references: None is permitted. Add references/implementation.md before implementation, amendment, commit, worktree setup, or recovery; add references/completion.md before simplify, completion, or a user-requested PR/MR merge and its cleanup. Add references/parallel-execution.md while evaluating delegation or while delegated work, subagent integration, or recovery is active; add references/post-merge-cleanup.md while handling a requested merge or cleanup. Persist and verify each set change in Required references in index.md through a coordinated record write transaction before any mutation or stage transition, and read newly required references before proceeding. Remove a conditional reference only after its stage and all dependent work (such as subagent branch integration or post-merge cleanup) have ended, and verify the updated references before the next action.

Persistent Mode Contract

Enter execute mode immediately when the user explicitly invokes execute, $execute, /execute, or asks to read, adopt, resume, continue, execute, or amend an accepted execution record. Accepted records are plan handoffs and discuss trackers that passed Direct Execute Handoff. Activate the mode in a fresh session and regardless of whether the implementation status is approved, in progress, blocked, paused, implemented, or previously exited. Supplying the record again or asking to read it is an explicit re-entry.

• Bind the mode to the canonical bundle root. Keep that bundle as the sole execution source of truth unless the user explicitly switches records.
• Keep execute mode active across later turns, completion reports, and Status: Implemented. Completing the baseline plan does not end the mode.
• Exit only when the user clearly says to exit or turn off execute, such as exit execute, turn off execute, thoat execute, or equivalent explicit wording.
• Treat requests to handle work separately, keep it outside the approved scope, or avoid changing the baseline as scope instructions, not as a mode exit. Record the boundary and material handoff or evidence in the adopted plan while the mode remains active.
• Do not treat reading or adopting a plan as authorization to implement code, mutate external systems, commit, push, or deploy. Wait for a clear current-session request authorizing the relevant action. In a git repository, a clear request to implement the adopted record authorizes local incremental commits for that implementation unless the user or plan explicitly forbids commits; it does not authorize pushing or deploying.

On every adoption or re-entry, read the complete manifest before substantive work and use the applicable intake bootstrap or active-session transaction to ensure index.md contains:

Execute mode: Active
Last updated: <timestamp and timezone>
Resume instruction: Invoke execute on <canonical bundle root> (tracker <tracker ID>), read index.md and every manifest file, keep this exact bundle as the execution source of truth, and continue updating it until explicit exit.

Preserve the implementation Status independently from the execute mode. An implemented plan may remain Status: Implemented while Execute mode: Active; reopen the implementation status only when new executable work starts.

Ensure Active Snapshot version 2 is current and keep the workflow-record header at version 4. Do not accept or migrate older single-file records.

Completion Contract

Execute the entire approved plan, not only the current phase or execution wave.

Treat every material correction, added deliverable, decision, evidence item, or out-of-scope handoff the user provides while execute mode is active as an amendment or evidence record. Update the adopted plan even when its approved baseline is already complete. Only an explicit execute exit stops this recording contract.

Do not send the final response while any in-scope plan item remains pending [ ] or in progress [~], unless a genuine blocker requires user input or an external state change. Progress reports, completed phases, failed checks, subagent results, context pressure, tool failures, and unavailable delegation are intermediate states, not completion conditions. Continue recovering and executing within the current task.

Before claiming that implementation is complete, blocked, or intentionally paused, ensure exactly one of these conditions is true:

1. Every in-scope plan item is completed [x], final verification has been attempted, and the plan status is Implemented.
2. All safe independent work is complete, at least one item has a documented genuine blocker [!], and the plan status is Blocked.
3. The user explicitly exited execute with unfinished work, the incomplete checklist remains accurate, the plan status is Paused, and the execute mode is Exited.

A final response for a completed implementation is a checkpoint, not a mode exit. State that execute remains active and name the adopted execution-record path unless the user explicitly exited it.

For a read-, inspection-, summary-, or adoption-only turn without implementation authorization, preserve the existing implementation status and checklist, persist the mode metadata plus any material evidence, and send a checkpoint response stating that no implementation was performed. This response does not need to satisfy an implementation completion condition and does not exit execute.

Mode Exit

When the user explicitly exits execute:

1. Stop accepting new amendments under this mode after the exit instruction.
2. Persist all material current-turn deltas, evidence, checklist state, and verification results first.
3. Set Execute mode: Exited and update Last updated.
4. Add an Exit entry to evidence.md with the instruction and timestamp.
5. Keep Status: Implemented or Status: Blocked when accurate; use Status: Paused when executable items remain unfinished without a genuine blocker.
6. Report the exact execution-record path and remaining work. Do not treat exit as authorization to discard or complete pending work.

Genuine Blocker Definition

A genuine blocker exists only when meaningful progress requires one of:

• A user decision whose alternatives materially change the approved outcome
• A credential, permission, approval, or secret that cannot be obtained within the current task
• An unavailable external system or state required for the next dependent work
• An action prohibited by higher-priority instructions
• An irreconcilable conflict with pre-existing user changes where proceeding could overwrite or corrupt them

The following are not blockers by themselves:

• A failed test, build, lint, verification, or integration check
• A crashed, timed-out, unavailable, or rejected subagent
• Lack of parallel-agent capacity
• A failed implementation attempt
• Missing optional tooling or skills
• Repository drift that can be reconciled without materially changing the approved goal
• Ambiguity that repository evidence or a safe, non-material assumption can resolve
• An optional documentation, simplification, or review step that can be performed locally or reported as unavailable

Required Input

Require a path to the execution bundle directory or its index.md unless an exact bundle is already active. A direct discuss handoff supplies its root automatically.

• If the user supplied a plan or tracker path, resolve it before doing implementation work.
• If the current task already has one adopted execution-record path, reuse it for later turns without asking again.
• If the user did not supply a path and no exact active path exists, ask where the execution record is using ask_question (or chat fallback) and stop until they answer.
• If the path does not exist or is not readable, report that clearly and ask for the correct path.

Plan and Tracker Intake

Before validating or adopting a record, read and follow references/intake.md. Adopt the exact bundle only after its intake checks pass; reading or adopting it does not authorize implementation.