executing-plans skill

Executing Plans

Execute the plan yourself, task by task, in this session: no implementer subagent per task, no reviewer per task. One fresh-context review of the whole branch at the end.

Why inline: Subagent-driven development pays for a fresh implementer and a fresh reviewer on every task, each re-reading the codebase from zero. Inline execution pays for one context (yours) plus one reviewer at the end. What it gives up is a fresh context per task and a second pair of eyes per task. This skill keeps what those two things bought, by other means: the brief is the spec, the ledger is your memory, TDD is the per-task gate, and the final reviewer is the second pair of eyes.

Core principle: The plan already did the thinking. Execute it exactly, prove each step with a test you watched fail and then pass, and leave a record that survives your own forgetting.

Narration: between tool calls, narrate at most one short line — the ledger and the tool results carry the record.

Continuous execution: Do not pause to check in with your human partner between tasks. They chose inline execution to spend less, not to answer "should I continue?" after every task. Execute all tasks from the plan without stopping.

Rulings, not stalls. Conflicts, ambiguities, plan defects — decide them. The spec is the binding authority, the plan is its argument, and your judgment settles what neither answers. Record every decision in the ledger as Ruling: — — , and keep going. Deviating from the plan without a ledgered ruling is a decision made in secret.

Four things stop you, and only these: an irreversible or destructive operation; a security-sensitive action; a side effect outside this worktree that norms say you ask about first (a merge, a push to a shared branch, a publish); and a plan so broken that every path forward is a guess. For those, stop and ask.

When to Use

chose inline execution at the handoff.

• You have a plan from superpowers:writing-plans and your human partner

../using-superpowers/references/). Never fabricate a dispatch; run the plan here.

• Your harness has no subagent tool (see the per-platform references in

superpowers:subagent-driven-development.

• Tasks are mostly independent — the same precondition as

A fully specified plan makes inline execution transcription plus testing: it runs well on a mid-tier session model, and the one place the most capable model earns its cost is the final review, which this skill dispatches separately. Tell your human partner so when they choose inline.

Prefer superpowers:subagent-driven-development when your human partner wants a review gate on every task, or when the plan is long enough that its later tasks would run on a compacted context. Inline execution over a long plan still works — the ledger is what makes it recoverable — but the last tasks get the least of you.

The Process

digraph process {
    rankdir=TB;

    subgraph cluster_per_task {
        label="Per Task";
        "task-start: brief + BASE; read the brief" [shape=box];
        "Work the steps in order: TDD, run every verification, read every output" [shape=box];
        "Step output matches plan's Expected?" [shape=diamond];
        "Plan wrong? Rule and ledger. Code wrong? systematic-debugging" [shape=box];
        "Commit as the plan's commit steps say" [shape=box];
        "Completion contract met?" [shape=diamond];
        "task-done: run tests, ledger the result; mark todo complete" [shape=box];
    }

    "Setup: worktree, workspace + ledger, read plan + spec, pre-flight scan" [shape=box];
    "More tasks remain?" [shape=diamond];
    "Final whole-branch review (fresh reviewer if you have one)" [shape=box];
    "Re-grade, then: Critical/Important → ONE fix pass, each fix RED→GREEN + green suite; Minor → ledger" [shape=box];
    "Final review clean: delete this plan's workspace" [shape=box];
    "Use superpowers:finishing-a-development-branch" [shape=box style=filled fillcolor=lightgreen];

    "Setup: worktree, workspace + ledger, read plan + spec, pre-flight scan" -> "task-start: brief

Setup

Ensure the work happens in an isolated workspace: use superpowers:using-git-worktrees to create one or verify the existing one. Never start implementation on a main/master branch without your human partner's explicit consent.

Conversation memory does not survive compaction. An inline executor that loses its place re-implements tasks whose commits already exist — the same failure as a controller re-dispatching them, paid for in your own context. Track progress in a ledger file, not only in todos. Harness todos are a live view; the ledger is the record.

The workspace and ledger are shared with superpowers:subagent-driven-development — same directory, same format — so a plan can change executors mid-flight and the new one resumes from the same ledger.

../subagent-driven-development/scripts/sdd-workspace PLAN_FILE — it prints the plan's git-ignored directory (/.superpowers/sdd//), home to every artifact for THIS plan: ledger, briefs, review packages. Another plan's directory is never yours to read or write.

• Each plan owns a workspace: at skill start, run

line names your plan file, tasks with a Task : complete line are DONE — do not redo them; resume at the first task without one. Their commits exist in git even when your context no longer remembers making them: after compaction, trust the ledger and git log over your own recollection. A ledger whose first line names a different plan file is another plan's progress: leave it and start your own, fresh.

• Check for this plan's ledger at /progress.md. If its first

# SDD ledger — plan: .

• Create the ledger with its identity as the first line:

if that happens, recover from git log.

• git clean -fdx will destroy the workspace (it's git-ignored scratch);

Read the plan once, note its context and Global Constraints, and create a todo per task. If the plan names a Spec, read that too: the spec is the authority the plan argues from, and conflicts inside the plan resolve against it. A plan with no reachable spec gets a ledger note saying so — rulings made without one are provisional.

REQUIRED SUB-SKILL: load superpowers:test-driven-development now, before Task 1. It governs every step of every task below; a plan whose steps already say "write the failing test first" does not exempt you from reading it.

Before Task 1, scan the plan for conflicts between tasks. The plan's Interfaces blocks tell you where to look: for every task that consumes what an earlier task produces, one ledger row — the two tasks, what one produces against what the other consumes, and what you found. Tasks that share nothing get no row; a plan whose tasks share nothing gets the single line Pre-flight: no shared interfaces. Rule on each conflict a row surfaces with the spec as the binding authority, record the ruling beside its row, and start Task 1. Each task's own text is checked when you read its brief, not here.

The Task Loop

Everything you print, and every tool result, stays resident in your context for the rest of the session. Redirect long test output to a file in the workspace and read its tail; read a brief, not the whole plan.

1. Take the task

path and BASE (the commit the task's range is cut from) in one call. Read the brief for every task, including ones you remember from setup: what you remember is a summary, the brief has the exact values, signatures, and test cases.

• Run this skill's scripts/task-start PLAN_FILE N. It prints the brief

• Mark the task's todo in_progress.

Every tool call is a turn that re-reads your whole context. Bookkeeping rides along with work — a ledger append in the same call as the commit, never in a call of its own.

2. Work the steps

The plan's steps are already in RED-GREEN order; follow them in that order under superpowers:test-driven-development, loaded at setup. A test step's code is written first and run first. Watching it fail is a step, not a formality — a test that passes before the implementation exists is a finding about the test.

Every step that runs a command has an Expected: line. Run the command, read its output, and compare. Three outcomes:

cause; never patch the symptom to make the step's output match.

• Matches. Next step.
• The code is wrong. Use superpowers:systematic-debugging. Find the

earlier task doesn't match what this task consumes, a command that cannot work. Rule on the smallest change that satisfies the spec, ledger it as Task : Ruling: — , and continue. The ruling is carried, not remembered: later tasks that touch the same interface read it from the ledger.

• The plan is wrong — a step contradicts the spec, an interface from an

Commit as the plan's commit steps say. A task that spans several commits is fine; BASE is what the review range is cut from, never HEAD~1.

3. The completion contract

Before a task's ledger line, all of the following are true, with evidence in this session — not inferred from the diff looking right:

the output.

• Every test the brief names exists and ran in this task, and you read

it writes the command and result into the ledger line.

• The final test run for the task passed — task-done is that run, and

• Every Expected: line in the brief was compared against real output.
• Every deviation from the brief has a Ruling: line in the ledger.

REQUIRED SUB-SKILL: superpowers:verification-before-completion governs the claim. If any item is missing, the task is not complete: finish it.

4. Complete the task

Run this skill's scripts/task-done PLAN_FILE N BASE -- with the test command the brief names for the whole task. It runs the tests, keeps the full output in the workspace, prints the tail, and — only if they pass — appends the completion line to the ledger:

Task : complete (commits .., tests: → )