dos-goal-fleet

name	dos-goal-fleet
description	Launch multiple goal-scoped workers in waves, each with a witness-gated stop condition and `dos arbitrate` file-tree safety. Use when an operator asks to run several independent goals in parallel and fold only verified ships.

dos-goal-fleet — wave-launched self-stopping goal workers, witnessed not narrated

A fleet that trusts each worker's "I'm done" is a fleet of silent fails. The move this skill makes is the one the whole substrate exists for: a worker's "the goal is met" is a claim with a byte-author, and the byte-author is the judged worker. So each child's stop is gated on dos-goal-gate — it cannot declare done until a witness it did not write (git ancestry, an effect read-back) corroborates the goal's effects. The fleet launches the leaves; the kernel decides which ones actually landed. The skill narrates; it never rules.

Take an operator-supplied context describing several independent objectives, turn each into ONE headless worker armed with a single goal, and fire them in waves sized to whatever seat pool the host exposes — so the launch is load-balanced and no single account walls. This is the fan-out analogue of two sibling skills:

• dos-goal-gate is one self-stopping leaf — a single agent whose "done" is grounded. dos-goal-fleet arms many such leaves at once. Each child runs the goal-gate discipline; this skill is the launcher and the rollup around them.
• dos-witness-claim is the fold — believing only the confirmed effects when many workers' results converge. Step 5 here is that fold, applied to the fleet's per-instance outcomes.

The shape is domain-free: decompose into independent goals → price the wave into its serial/concurrent partition → arbitrate co-launch safety → wave-launch one self-stopping child per goal → witness every claimed ship → roll up. Pricing the partition is the default first move, not an optional optimization: concurrency is earned per disjoint tree, never assumed for the wave. The policy (which lanes, which plan grammar, how the host rotates accounts, which model a child runs) is data read from dos doctor --json / dos.toml and from the host's own launch convention — never a literal this screenplay hardcodes. A shipped generic skill names no host (the litmus); the host-specific launch verb is a seam you fill in Step 3.

When to use this (and when not)

• Use it when the operator hands a context with 2+ independent objectives, each describable as a single goal condition (a visible deliverable), and wants them run concurrently rather than serially.
• Use dos-goal-gate when it is one objective — just arm a single self-stopping agent; no fleet needed.
• Use dos-dispatch / dos-next-up when the work is already shaped as a phased-plan dispatch packet of disjoint repo tasks — that is packet-driven; this skill is goal-condition-driven over free-form objectives.
• Use a single agent or a loop when the objectives are a sequenced plan — one goal waits on another's output. The fleet is for independent goals.

Never arm a loop spine. Do not goal-gate a dispatch-loop or a supervisor spine — those have their own typed stop authority. dos-goal-fleet arms leaf objectives, which is exactly the sanctioned use.

Inputs

Shape	What it looks like	Route
Explicit goal list	"goal 1: …, goal 2: …, goal 3: …"	one instance per listed goal
A context to decompose	a paragraph / doc / set of asks	Step 1: split into independent objectives, one instance each
A count + theme	"launch 5 workers to each find a bug in X"	derive 5 distinct goal conditions over X

Step 0 — Discover the workspace layout, and the host's seat pool

Run the doctor verb once and read the result. Every path / lane / exit-code below comes from here, never a literal (the WCR on-ramp — EXAMPLES.md Recipe 0).

dos doctor --workspace . --json

The fields this skill uses:

• lanes / lanes.trees — the lane taxonomy and each lane's file-tree, for the dos arbitrate co-launch check in Step 2.
• paths.plans_glob / stamp — the host's plan grammar and ship-stamp convention, for the dos verify ship-witness in Step 5.
• git — if false, the git-phase ship-witness (Step 5) has no history; every claimed ship resolves source="none". Say so; do not silently pass it.
• runtime_hooks — which runtimes already have dos hook stop wired (Step 3).

The seat pool (sizes the waves). The wave size is the host's serving-account count — read it from the host's own account/seat command, not from any verb this kernel ships (DOS names no account mechanism). The skill needs one number, SERVING = how many worker seats can run concurrently right now:

• SERVING == 0 (every seat walled) → STOP. Do not launch a paid child into a standing usage wall. Report the soonest reset the host exposes and offer to schedule the launch for after it.
• SERVING == 1 → rotation is a no-op; launch serially or in a wave of 1, and warn the operator that all goals share one seat's window.
• SERVING >= 2 → proceed; wave size = min(SERVING, total_goals, --max-concurrent).

Account rotation is a host seam, not a DOS verb. How launches spread across a seat pool — round-robin cursor, per-launch origin overlay, whatever — is the host's concern, wired into the launch command of Step 3. This skill only requires that the host's launch verb rotates seats per instance; it names no such mechanism itself. If the host has none, every child shares one seat — set SERVING = 1 and say so in the rollup.

Step 1 — Derive one goal per objective (the three-clause contract)

If the operator gave an explicit goal list, use it verbatim. Otherwise split the context into independent objectives — each must stand alone, no cross-goal dependency. For each objective write a goal condition stated as a checkable effect, obeying three clauses (this is what makes the child's "done" witnessable by dos-goal-gate, not self-certified):

1. Deliverable as a visible effect — a (plan, phase) the child will ship, a named file it will write, a commit it will land. State it as the thing a witness can later read back (dos verify, a fresh GET). Never "the work is good" — that has no byte-author but the worker.
2. The explicit-blocker escape clause — append literally: "— or the final report explicitly names why it could not be produced". Without it an honestly blocked child burns its whole turn ceiling re-trying. A blocked child that says why is a clean outcome, not a failure.
3. No uppercase verdict tokens in the condition text (no SHIPPED / BLOCKED / DONE literals) — the condition is echoed into the child's log and any grep-based verdict scan must not false-match it. Lowercase prose.

Decompose into effects; abstain rather than invent. An objective you cannot name a checkable identifier for is not a passable goal — it is a NO_CLAIM to surface for the operator, never an effect you fabricate. This is the same decomposition dos-goal-gate Step 2 spells out; the goal-gate wired into each child (Step 3) enforces it at the child's stop.

Write the derived (label, goal_condition, expected_paths, in_prompt_directives) tuples to a plan file under the run dir (Step 2) and show them to the operator before launching. If you derived the split (vs. the operator listing it), pause and let the operator confirm or edit it — a wrong decomposition wastes a whole wave.

Step 2 — Create the run dir and arbitrate co-launch safety

RUN_DIR="<host-scratch-root>/goal-fleet/$(date -u +%Y%m%dT%H%M%SZ)"
mkdir -p "$RUN_DIR"   # always mkdir -p BEFORE any `>` redirect, or the shell
                      # silently creates an empty file in the parent (hygiene)

(<host-scratch-root> is the host's gitignored scratch dir, read from config or chosen by the operator — not a literal this skill names.)

Price the whole wave first — the default first move, not an optimization. Before the per-child loop below, price the entire proposed partition at once and emit its serial/concurrent split — the three sets you then launch on: (1) the concurrent set (the maximal disjoint group that may co-launch this wave), (2) the serialized colliders (goals whose trees overlap a co-launched goal — held to a later wave, sequenced behind the goal they collide with), and (3) the peer-blocked holds (next paragraph). You compute this before you spend a single launch, instead of discovering a collision only when the K-th child's arbitrate refuses, after the earlier children already started. Run dos-plan-price on the wave; launch its safe_now set, sequence the colliders, hold the rest.

Fold in live peer WIP, not just in-fleet geometry. The price is geometric over the proposed trees, but a shared tree has a second collision source the lease WAL may not show yet: a lane a peer is actively editing right now (uncommitted or untracked files under that lane). A goal whose tree overlaps live peer WIP is hot — hold or serialize it even when dos arbitrate would acquire (no lease is held) and the in-fleet geometry is disjoint. Read the working tree's dirty/untracked set per lane and treat a hot lane as a peer-blocked hold; co-launching into it risks cross-pollinating a peer's in-flight work. The per-goal arbitrate below is still the unforgeable floor at acquire time — the price (geometry + live-WIP) is the early-warning ahead of it, not a replacement.

Collision check — the load-bearing safety step. Independent goals can still touch overlapping files if they ship code. Two same-wave children writing the same paths is the exact cross-pollution dos arbitrate exists to prevent. For each goal, pass its expected_paths (from Step 1) and the leases already held by the children you have already decided to co-launch this wave:

dos arbitrate --workspace . --lane <lane> --tree "<this goal's expected paths>" --json

• outcome: "acquire" → its file-tree is disjoint from the wave's other children; co-launch it.
• outcome: "refuse" → it overlaps a child already in the wave; do not co-launch. Push it to a later wave (sequence it) or scope its claim narrower and re-arbitrate. Read free_clusters for a lane it could take instead.

For read-only / report goals there is no write collision — co-launch freely (arbitrate still returns acquire). Only shipping goals need the gate. Prefer the MCP form mcp__plugin_dos-kernel_dos__dos_arbitrate when running inside an agent loop; the CLI form above is for a shell launcher.

Step 3 — Wire the goal-gate, then launch one self-stopping child per goal

First, wire the grounded Stop gate once per workspace (idempotent — merged into any existing hooks, never clobbering the operator's):

dos init --with-hooks --workspace .      # the default runtime
# cross-runtime:  dos init --hooks <runtime> --workspace .   (preview with --dry-run)

This binds dos hook stop — the gate that refuses a child's stop while a phase it claimed shipped is not backed by git. That refusal IS the grounded form of "keep working until the goal is met": the child cannot end on its own word that a phase shipped. This is the whole dos-goal-gate discipline; read that skill for how it composes with a host's own model-judged goal command (they AND — the grounded gate can only ever add a refusal, never loosen one).

Then launch each child as ONE headless worker subprocess. The launch command itself is the host's convention — this skill names no runtime binary, model, effort, or account flag. The host's launch verb must supply, per instance:

• The goal, armed as the runtime's stop-condition (so the child self-stops on the goal). The grounded dos hook stop (just wired) runs alongside it and vetoes a false done.
• The in-prompt directives on stdin — context, scope, and the ship rules below. (A goal armed as a positional and directives on stdin compose; do not rely on a stdin goal line to gate — that is inert text the model only reads.)
• Seat rotation per instance — the host's account/origin overlay (Step 0), evaluated before the launch so each child in the wave lands on a different seat. If the host has none, every child shares one seat (SERVING = 1).
• A hard turn ceiling matched to the goal's weight (a light read/report is small; a ship is larger) — independent of the goal-gate, as a runaway backstop.
• The model / effort from the host's registry, never hardcoded here.

Per-instance launch hygiene (record into the run dir):

N=<instance-index>
ITER_DIR="$RUN_DIR/inst-$N"
mkdir -p "$ITER_DIR"
echo "[goal-fleet] inst-$N seat: ${<host seat id var>:-<default>}" > "$ITER_DIR/seat.txt"
# ... host launch verb ...  > "$ITER_DIR/run.log" 2> "$ITER_DIR/run.err"

• Never merge stderr into the log (2>&1) — stderr goes to the sibling .err; merging poisons the verdict scan with warnings / preflight banners.
• In-prompt git rules (state them even though a host hook may also enforce): the child may git add / git commit on the current branch only if the goal calls for shipping; it may not push, tag, force-push, rewrite history, switch branches, git reset --hard, git clean, git restore, or git checkout -- <tracked>. The orchestrator (you) never switches branches or leaves the worktree.

Step 4 — Fire in waves; one background task per instance

Launch each instance as a background task so the harness auto-notifies on exit — do not poll the log (wait-don't-poll). Wave discipline:

1. WAVE = min(SERVING, remaining_goals, --max-concurrent) (from Step 0).
2. Launch WAVE instances in one message, multiple background launches so they start concurrently — and so the host's per-launch seat cursor advances once per child, landing each on a different seat.
3. Wait for the wave's notifications (the harness re-invokes you on each exit). Do not start the next wave until the current one drains — this keeps concurrency ≤ the seat pool and lets walled seats reset between waves.
4. Repeat until all goals are launched.

Re-read the seat pool between waves. If a live fleet (a dispatch-loop, a supervisor) is already consuming seats, SERVING overstates your free headroom — re-run Step 0's seat read between waves and shrink the wave to the live count.

Same-wave goals that dos arbitrate refused in Step 2 go to a later wave (their file-trees overlap a child already running) — never co-launched.

Step 5 — Per-instance outcome: witness, never narrate (the fold)

When an instance's task notification fires, read its result — and remember the goal-gate is transcript-grounded for early-quit, not git-grounded for ship: it proves the child didn't quit early, NOT that work landed. So fold only the confirmed effects (this is dos-witness-claim applied to the fleet):

• Did it meet the goal? Read the child's final result envelope in its run.log. The honest-blocker escape clause means a blocked child names why in its final report — a clean outcome, recorded as blocked-with-reason, not a failure.

• Did a claimed ship actually land? Prove it by a witness the child did not author — never by its transcript:

  dos verify --workspace . <PLAN> <PHASE> --json     # SHIPPED only on real git evidence
  dos commit-audit --workspace . <claimed-sha>       # subject vs its own diff
  

  Read the rung: source: "registry" is the strongest ship; source: "grep-subject" is SHIPPED-but-weaker (a subject is forgeable); source: "none" means git does not back the claim — the narrated success the world doesn't corroborate. A goal met is not a ship verified.

• Effect outside git (a created file, a row, a sent message)? There is no dos verify-effect CLI verb — gather an independently-authored read-back via the dos.evidence_sources seam (the Python-API pattern in dos-goal-gate Step 2b) and fold only on CONFIRMED. Log the gap if no witness is wired; never launder an unwitnessed effect into "goal met".

• Auth/launch wall on turn 1? is_error:true + a not-logged-in message + zero cost = the seat didn't reach the child. Re-check that instance's seat.txt and relaunch only that one instance.

Step 6 — Rollup + archive

Write a one-screen rollup to $RUN_DIR/rollup.md: per instance — label, seat used, outcome (met / blocked-with-reason / auth-failed / errored), cost, and any verified ship SHA (the dos verify / commit-audit verdict, not the child's claim). Also record, per goal, which price bucket it came from — concurrent / serialized-after / peer-blocked-hold — so the serial-vs-concurrent decision is auditable. Tally seats used to confirm the spread actually happened:

grep -h seat "$RUN_DIR"/inst-*/seat.txt | sort | uniq -c

If every instance shows the same seat id, rotation did not engage (SERVING == 1, or the host's overlay failed) — say so; do not imply a spread that didn't happen.

The run dir is local scratch (gitignored) — do not commit it. If any instance shipped code and the tree is coherent, the operator (not this skill) decides whether to push or release — dos-goal-fleet authorizes per-child commit, never an outward-facing push.

Anti-patterns

• ❌ Deciding "the goal is met" by reading the child's last message. That is consistency, not grounding — the worker judging its own bytes. Witness every ship with dos verify / commit-audit; fold only the confirmed (Step 5).
• ❌ Co-launching two shipping goals without dos arbitrate. Independent goals can still write the same files; arbitrate each child's tree before the wave and sequence the refusals (Step 2).
• ❌ Launching the wave without first pricing it into its serial/concurrent partition. Concurrency is the default only for the priced-disjoint set; colliders are serialized and lanes with live peer WIP are held. Price first (Step 2), then launch the concurrent set and sequence the rest.
• ❌ Launching more concurrent instances than serving seats. That forces ≥2 onto one seat's window and defeats the load-balance; re-read the pool between waves.
• ❌ Naming a specific runtime binary, model, effort flag, or account mechanism in this skill. The launch verb and seat rotation are the host's seam (Step 3); this skill names no host (the litmus).
• ❌ Goal-gating a loop spine (a dispatch-loop, a supervisor). Those carry their own typed stop authority; arm only leaf objectives.
• ❌ Treating a /goal-style model-judge as the ship oracle. The model-judge stops early-quitting (transcript-grounded); the git gate (dos hook stop) and dos verify are what confirm a ship. They AND — the grounded gate only ever adds a refusal.

The one rule under this skill

Each child's "the goal is met" is a claim with a byte-author — the child. The fleet lets a child stop only when dos hook stop finds git backs its claimed phases, and folds a child's ship into the rollup only when dos verify / commit-audit — a witness the child did not write — confirms it. The worker's confidence and its fluent description of success are irrelevant to both gates, which is the whole point: across a whole fleet, the part that decides a goal is done is never the part being judged.