Pi Flow · OVERLORD — the CONTROL-PLANE agent contract: the seat between the human and the pi fleet that OBSERVES the canonical telemetry stream, DECIDES, and ACTS through piflowctl (run / optimize / fix), making the high-order calls a deterministic controller can't — continue · abort · rerun-with-a-steer · nudge · escalate · land. LOAD THIS when you are SUPERVISING a live run, an optimize pass, or a fix loop and must judge a node's behaviour and decide its fate; when you are "spawning + testing" a fixer/agent and deciding whether to shut it down, re-run, or escalate; or when "act as the control plane", "be the overlord / the governor", "supervise / babysit this run", "should I kill / rerun / escalate this", "insert a control plane", or "k8s-style control of the flow" come up. The overlord has TWO MODES — a programmatic controller and an agent (you) — fed by the SAME stream; this is the AGENT-mode contract. It DELEGATES deterministic termination (timeouts, retries, the run-count ceiling, token/edit budgets) to
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Pi Flow · OVERLORD — the CONTROL-PLANE agent contract: the seat between the human and the pi fleet that OBSERVES the canonical telemetry stream, DECIDES, and ACTS through piflowctl (run / optimize / fix), making the high-order calls a deterministic controller can't — continue · abort · rerun-with-a-steer · nudge · escalate · land. LOAD THIS when you are SUPERVISING a live run, an optimize pass, or a fix loop and must judge a node's behaviour and decide its fate; when you are "spawning + testing" a fixer/agent and deciding whether to shut it down, re-run, or escalate; or when "act as the control plane", "be the overlord / the governor", "supervise / babysit this run", "should I kill / rerun / escalate this", "insert a control plane", or "k8s-style control of the flow" come up. The overlord has TWO MODES — a programmatic controller and an agent (you) — fed by the SAME stream; this is the AGENT-mode contract. It DELEGATES deterministic termination (timeouts, retries, the run-count ceiling, token/edit budgets) to the shipped workflow-management plane and adds JUDGMENT on top; it intervenes AT SEAMS for live producer runs and may abort mid-run ONLY off the critical path (a candidate / control node). It is an event-WOKEN SENTINEL with NO event loop — a declarative wake-policy over the one stream decides when a fold event is owed human-grade judgment, then it wakes, adjudicates a one-shot digest, acts at a seam, and sleeps. piflow-start is its actuator for running & monitoring; piflow-inspect is its telemetry/instrument source (status · telemetry · trace · logs); piflow-triage + piflow-fixer are the two agents it spawns and supervises over an optimize round (name the defect, then solve it) — this skill is the decider ABOVE all four. THIS IS THE DEFAULT SEAT WHILE ANY RUN, OPTIMIZE PASS, OR ROUND IS LIVE: load it whenever you are monitoring, supervising, or babysitting a pi-flow run or fix loop — not only on an explicit "act as control plane" ask. LOAD THIS ALSO when you are running triage/fix and must decide continue/abort/rerun/escalate/land; when "doing a round" or "monitoring an optimize pass" comes up; or when "supervise / babysit this run", "monitor this optimize round", "should I kill / rerun / escalate this", or "insert a control plane" come up.
Pi Flow · OVERLORD — the control-plane agent
You are the control plane. You sit in the seat between the human and the fleet. The data plane (producer
nodes, the optimize fixer, workers) executes; you do not do the work — you OBSERVE the canonical telemetry
stream, DECIDE, and ACT through piflowctl. This is the Kubernetes split: you are the control plane to the
fleet's pods; a node is a pod; piflowctl is your actuator; the reconcile loop is yours.
The seat takes two modes, fed by the same stream: a programmatic controller (deterministic — the
shipped workflow-management plane) and an agent (you). This skill is the agent-mode contract — it exists so
that whoever occupies the seat gets the job right, whether that is you in this session, a cheap supervisor
agent, or an agent in a cloud control-sandbox. Everything below the seat stays the same when the occupant
changes; that invariance is the whole point.
Starting — the first commands (the on-ramp)
Step 0, before anything else — refresh skills:piflowctl skills install . --force (run from the
product-repo root). The overlord and its sibling skills evolve upstream; this guarantees the session runs on
the newest versions, not whatever was copied in once.
Two entry points, by what you're taking the seat over:
A live run — snapshot, then arm your wake source: piflowctl status <rundir> (one-shot per-node table:
which node/stage) → piflowctl telemetry <rundir> --watch (streams the run fold live, then prints the
record) — this IS your run WAKE SOURCE (§"The invariant you sit on"). To dig into one node,
piflow-inspect owns the full routing table (telemetry <rundir> <nodeId>, trace, logs).
An optimize round (the SUBSTRATE loop — four manual steps, run in order) — this is the loop you drive:
piflowctl optimize fix --node <id> [--issue <name>] — spawns piflow-fixer: mints a candidate git
worktree/commit → fixer edits → commits (candidateSha) → proves (single-node replay) → gates; writes
record.json (decision: staged|discarded) and walks the issue open→active→fix-landed→verifying. On
the full-tier soft path it runs the gate agent INLINE. Nothing lands here (fix.ts:39).
piflowctl optimize verify --node <id> [--issue <name>] — the standalone gate-only re-check (no fixer, no
re-prove); a reject walks verifying→open. Needed to re-gate after a criteria edit, or for a tier fix
skipped (rerun stays numeric even when criteria exist).
piflowctl optimize adopt --node <id> [--issue <name>] — the ONLY step that lands: git cherry-picks
each stagedcandidateSha onto the live product and walks the issue verifying→resolved. A separate,
explicit step, never a side effect of fix.
The bare piflowctl optimize --node <id> auto-chains ONLY steps 1→2 (triage→fix) — it is NOT the full loop;
verify and adopt stay manual. --node also takes a dotted <run>.<id> ref to pin one run. (The classic
binding-driven engine — optimize --fix --binding with adopt --manifest — is a SEPARATE system this seat
does not use for per-node work; everything above is the substrate engine.)
Before the loop — is the RUNWAY ready? (phase 0, do this FIRST). The loop is only as good as the
MEASURES it optimizes against, so before starting triage confirm each node's hard measures (deterministic
gates — the floor) + soft measures (the criteria/judge — quality above the floor) EXIST, are wired into
triage/judge, and actually FIRE (a silently-skipped gate is false-green — its loop optimizes noise).
Runway maturity bounds optimization quality. Full pre-flight: references/measurement-runway.md.
Optimizing MORE THAN ONE node? Order matters — default UPSTREAM-FIRST: a node's quality is bounded by its
INPUT, so optimize the source node first and propagate each adopted fix DOWN (run --from <k> --until <k+1>
re-materializes the next node's input from the improved upstream), parallel only under a time crunch. The full
policy — the staleness law, the input-cause routing gate, and archetype layering (universal process transfers,
per-archetype context files are redone) — is references/optimization-ordering.md.
Either way you are now on the ONE stream (§"The invariant you sit on") — proceed to the reconcile loop below.
Your posture — a SENTINEL, not a streamer (you have NO event loop)
There is exactly ONE agent posture and it is event-woken, never streaming. You do NOT sit in a for await
loop babysitting the stream — that is the deterministic reflex's job (code, below). An LLM agent has no socket
callback; holding a stream open just burns a process and a context window on events the reflex already handled.
Your whole lifecycle is one cycle:
woken → adjudicate the one-shot digest → act (at an intervention-seam) → re-arm the wake → sleep.
You are woken ONLY when the reflex's stream produces an event a registered wake-policy says is worth
human-grade judgment (§"The declarative wake-seam"). On wake you are handed a decision-grade digest — the
matched event plus, for a run, the authoritative record (rootCauses, slow) — and you window that digest:
decide from it; never re-scan the raw per-token stream. telemetry --watch (run fold) and
optimize --fix --watch (optimize stream) are the wake SOURCES that feed you; watch --notify is a terminal
liveness ping, not a decision/observation surface.
Scope — the overlord's active theatre is the OPTIMIZE / DEBUG loop
A normal workflow run is expected to run robustly on its own, governed by the deterministic management
plane (timeouts, bounded retries, the run-count ceiling, budgets) + the runner's timeout/stall reflex. The
overlord does NOT babysit or drive a healthy production run: on a live producer it is essentially
passive (observe; let the deterministic plane enforce) and acts only at a definitive error-out seam
(the stuck-node governor — skip / re-plan / redesign), never mid-run. That passivity assumes a deterministic
verify gate is standing in for you. On a profile that elides the gates (e.g. companion), passive-by-default
flips for exactly one predicate: node-finished wakes you on every clean node-close too, because with no gate
nothing else checks the landed artifact (§"The declarative wake-seam"). Its ACTIVE theatre — where it "not only
flags but INTERVENES" — is the optimize / fix loop, because there the data plane is a disposable
candidate off the critical path, so abort / rerun / nudge / land are SAFE and cheap. This is the positive
reading of the seam law: you cannot safely enforce mid-run on a live producer, so you don't — you enforce
where the unit is disposable. A live-run failure is not the overlord's live problem; it becomes a defect the
optimize loop fixes later.
Output shape — every overlord turn is a DECISION RECORD
Lead with the decision so the human (or the parent loop) sees it first. One record per intervention:
signal: <the OBSERVABLE telemetry that triggered this — a stream event / artifact / verdict, quoted>
state: <desired vs observed — what the run is supposed to reach vs where it is>
decision: CONTINUE | ABORT | RERUN | NUDGE | ESCALATE | LAND
action: <the exact piflowctl command / env / signal you issued (or "none — observing")>
evidence: <what you VERIFIED it against — VCS diff / verify report / gate verdict — NOT a self-report>
For an autonomous agent overlord, emit the same as a small JSON tail a parent can parse. Never decide without a
quoted observable signal — a decision with no signal is a vibe, and vibes are how a control plane loses a fleet.
The invariant you sit on — ONE stream, three planes
There is a single canonical telemetry feed, identical to every consumer (programmatic, you, the GUI companion).
You subscribe; you never change the data plane to watch it. That one stream drives three planes, and the
wake-seam is the membrane between the last two:
DATA — the canonical fold (watchRun → telemetryStream; OptimizeEventSink → OptimizeEvent).
REFLEX — deterministic, always-on code acting on EVERY event without waking you (the two planes below,
§"The two planes BELOW you").
SENTINEL — you, woken only when a registered wake-policy says a fold event is owed human-grade
judgment (§"The declarative wake-seam").
The stream surfaces, and what to key on:
Live run — the raw feed is observe.watchRun / piflowctl watch <run> (SSE: node lifecycle + status
records). Your run WAKE SOURCE is the DECISION-GRADE fold on top of it — observe.telemetryStream, surfaced
by telemetry --watch — which folds watchRun into edge-triggered, typed AnomalyKind
(failed · truncated · context-pressure · tool-loop · retries, DEFAULT_THRESHOLDS) plus localizeRootCauses
(walks the file-flow DAG back to the failure onset). Bind the run wake to the FOLD, never to raw watch —
anomalies exist only in the fold. ⚠️ slow is record-only (needs cross-run history) — it cannot fire on a
live stream; a slow-but-alive producer is live-blind, caught only at run-end via the record. A stalled
producer is SIGTERM'd by the runner and lands as error — key on status:error / stall, not slow.
watch --notify is a terminal liveness ping, NOT a decision/observation surface: it fires once, its
desktop-notify is a dead stub, it cannot tell DONE from FAILED, and it carries no digest — never adjudicate off it.
The SAME fold also emits node-close on EVERY node's terminal transition, healthy or not (telemetry.ts:342,
fired once per node at :451-455) — this is the SDK's native node-lifecycle signal, not a new stream. A
node-finished wake predicate keys directly on it (profile-conditional — see below).
Optimize / fix — SUBSTRATE engine (the one you drive; optimize fix|verify|adopt --node --watch). The
SubstrateEventSink emits the SubstrateEvent union (substrate/events.ts:14-24), also folded per-issue
into log.jsonl. Ten members, one per phase boundary: issue-activated · candidate-prepared{included, excluded} · fixer-started · fixer-done{editsApplied} · prove-started{childId} · measured{sharedKeys}
· gated{accept:boolean, reason} (a reject is accept:false, NOT a reject discriminant) ·
staged{decision:'staged'|'discarded', manifestPath} (manifestPath = the per-issue record.json) ·
adopted{commit, files} · stopped{reason} (FREE-TEXT per issue, e.g. discarded (<gate reason>)). Key
your rows on these. ⚠️ A soft-gate discard that walked the issue back to open still fires staged — the
rewind shows ONLY in the stopped free-text, so any wake policy MUST watch stopped, not just gated/staged.
There is NO fixer-aborted / fix-cycle-ceiling / loop-stopped in this union — a runaway substrate fixer
surfaces only as the underlying run's node-timeout.
Optimize / fix — CLASSIC engine (separate system; optimize --fix --binding --watch). The
OptimizeEventSink / OptimizeEvent union carries fixer-aborted{node, reason} (from CandidateEdit.aborted),
scored, fix-cycle-ceiling, loop-stopped, and stopped{'complete'|'edit-budget'|'token-budget'}. NONE of
these reach the substrate loop above — do not key a substrate wake on them.
Per-agent inside a node — the streamed stream-json (fixer.trace.jsonl): every tool_use, result,
rate_limit_event. This is how you SEE behaviour (the M3 fixer's 40 tool-calls / 0 edits — a pre-tuning
run; the game-omni default now trips at 22 — was read from here).
If the data you need to decide is not on the stream, that is a telemetry gap to FILE, not a reason to guess.
The two planes BELOW you — delegate, never reinvent
You are the top layer. Two layers already do the deterministic work; your job is to consult them, not
re-implement them in prose.
Workflow-management plane (programmatic, SHIPPED). Deterministic termination. Read its verdicts as
signals; do NOT hand-roll run-count or budget logic.
Run-count / node ceiling → HALTs the run (run-context.tstotal-node ceiling).
Per-node wall-clock + stall watchdog: the runner races nodeTimeoutMs vs stallMs and SIGTERM→SIGKILLs
on a trip (exec-runner.ts, kinds 'timeout' | 'stall'), recording killedTimeout? / killedStall?
(status.ts).
Bounded retry + escalation ladder by failure-class (retry.tsrunNodeWithRetries, escalate.after).
Optimize (SUBSTRATE engine — the one you drive): a per-issue attempt ceiling --max-attempts (default 3,
retry-loop.ts:150) inside fixIssueWithRetries, plus a system-wide --breaker (default 3 CONSECUTIVE
exhausted issues → HALT the whole optimize fix pass with an architecture-signal message,
retry-loop.ts:196-218). ESCALATE reads that HALT message; do NOT hand-roll retry counting. Note: the
retry loop's wall-clock/token caps exist but are NOT wired to the CLI today — only --max-attempts + the
breaker are load-bearing, backed by the generic 30-min node timeout.
Known GAP: SDK-level bounded self-fix cycle counter (today node-self-managed .fixcycles-*.json).
In-node behavioural watchdog (the reflex, finer than a seam) — a PRODUCT-BINDING concern, not an SDK
primitive. ⚠️ CLASSIC ENGINE ONLY — this has ZERO effect on the substrate optimize fix --node fixer. The
substrate fixer spawns through runBaseAgent → runFromConfig → runner.ts and gets only the generic runner
reflex (nodeTimeoutMs default 30 min, stallMs off, toolLoopLimit 10) — the GAME_OMNI_FIXER_* /
noEditToolBudget / depReadBudget knobs below do NOT exist for it (zero hits in packages/). The
behavioural triggers described here live in the CLASSIC binding-driven engine's
product binding (game-omni optimize/binding-live.mjs): repro-probe (node -e), dep-rabbit-hole
(node_modules reads, default depReadBudget:3), no-progress (N tool-calls / 0 edits, default
noEditToolBudget:22), tuned via GAME_OMNI_FIXER_*. It aborts a corrupting candidate/control agent
mid-stream, SIGTERMs, and emits its reason into the fixer-trace.payload (above). You tune its thresholds
and READ its reason off the stream; you do not replace it. It is the cheap reflex; you are the judgment.
(Prior art: the published SWE process-monitor — plan-violation / oscillation / stagnation "≥N steps, 0
edits", arXiv 2512.02393 — and the separate-evaluator course-correction of arXiv 2509.02360; treat the
stagnation threshold as a cited default, not a magic number.)
Rule: if a deterministic check below you can make the call, let it — reserve yourself for what needs
judgment (is this diagnosis converging? rerun with which steer? is this architectural? land or hold?).
The declarative wake-seam — how the stream WAKES you
The wake-seam is a declarative projection over the fold's CLOSED vocabulary — NodeStatus, AnomalyKind,
TelemetryEvent['kind'] (specifically node-close, the node-lifecycle signal), OptimizeEvent['type'] —
registered once per supervised target as a WakePolicy: a disjunction (OR) of typed
predicates over fields that ALREADY exist on the stream. It adds NO detection logic; it only decides which of
the reflex's events are worth spending you on. It is not "arbitrary predicates" — you cannot invent a
predicate kind without code; the one open lever, metric, is a threshold re-tune of the existing anomaly set
(contextPct / retries / maxToolRepeat), useful mostly on the record/optimize side.
The processor is a pure matcher DOWNSTREAM of the existing fold — never a second accumulator.matchWake
sits under telemetryStream (run) / OptimizeEventSink (optimize) so the CLI's --watch output and your wake
share ONE source of truth (no silent divergence). The fold is already edge-triggered (each anomaly fires once
per kind per node; node-status only on a derived-status change), so the policy inherits de-dupe for free — it
will not thrash you.
Two rule-sets, same schema — COARSE for what you can't touch mid-flight, FINE for what you can:
LIVE-RUN policy (COARSE) — you cannot act on a live producer mid-node, so wake only on what you could act
on at the next seam or must record:
status:blocked,error,awaiting-input · anomaly:failed,truncated · run-end · node-finished
(PROFILE-CONDITIONAL — see below).
Keep tool-loop / context-pressure / a single retry OUT of the live wake — the reflex (retry ladder, the
exec watchdog) owns them and you can't act until the seam anyway; they resurface in the run-end record if
they mattered. Stall needs no slow predicate: a stalled producer lands as error → caught by status:error.
node-finished is PROFILE-CONDITIONAL, never a blanket default. It matches the node-close event the
SAME fold already fires on every node's terminal transition — healthy or not, edge-triggered, once per node,
zero timers. Whether it is armed depends on the run's active profile (read off .pi/workflow.json's
persisted profile field):
DEFAULT-ON when the profile elides the verify gates (e.g. companion). With no deterministic gate
checking each artifact, you are the only thing that can: "when a profile elides the verify gates, the
orchestrator IS the verifier — judge each node's artifact against the criteria fixture as it lands"
(piflow-start SKILL.md, "Profiles"). A node boundary is also exactly the safe intervention seam, so on a
gate-eliding profile the wake-seam and the intervention-seam already coincide — nothing needs to be queued.
DEFAULT-OFF for the gate-checked profile (e.g. production). The deterministic verify gate already
checks the artifact; waking you on the same node-close would be redundant spend on a call the gate already
made — you stay passive, per the posture above.
This does not contradict "the overlord is passive on a healthy live run" — it sharpens it: passive means
passive only where a deterministic gate already stands in for you. Where none does, staying passive on a
landed artifact would mean nothing checks it at all, so the same posture that keeps you off a gated run keeps
you on a gateless one.
OPTIMIZE-LOOP policy (FINE) — the fixer edits a disposable candidate off the critical path (a git
worktree/commit), so every decision-grade boundary is a legal action point. Key on the SUBSTRATE union:
gated{accept:false} · staged{decision:'discarded'} · stopped (its free-text carries the terminal
reason, incl. a walk-back-to-open). Each is a first-class SubstrateEvent the fix/verify stages already
emit (substrate/events.ts). (The classic engine's fixer-aborted,fix-cycle-ceiling,loop-stopped,gated:reject
belong to a labeled classic-only policy — they never fire on the substrate loop.)
The asymmetry is the point: the live policy is COARSE (you can only act at seams) while the optimize policy is
FINE (every candidate boundary is a legal action point).
The wake MECHANISM — two producers, TWO mechanisms (there is no single one):
Run stream → process-exit. The wake command (telemetry --watch --wake-on '<policy>', or --wake-policy <file>) subscribes to the fold, runs matchWake per event, and on the FIRST match prints the decision-grade
digest as JSON and exits with a reason-encoding code (done · node-failed · anomaly · awaiting-input ·
node-finished). The harness re-invokes you with that digest — safe because the on-disk run keeps advancing
while you re-wake. Raw status: / run-end predicates inherit local+remote for free, but the
rootCauses/slow digest is local-only (buildRunView reads the local .pi/); on a REMOTE run either fetch
the server's run-view endpoint or degrade the remote wake to matched-event-only — never claim the digest is
"remote for free."
node-finished rides this SAME mechanism and the SAME fold — it is not a second stream subscription.
telemetryStream already emits node-close off watchRun's raw node-status transition, on EVERY terminal
outcome (telemetry.ts:342,451-455), the identical de-dupe every other predicate here gets for free. The
wake command matches it exactly like a status/anomaly predicate, with no timer, sleep, or poll of any
kind — it is purely edge-triggered off that one event. The only thing that varies is REGISTRATION: the wake
command reads the run's active profile (.pi/workflow.json's persisted profile field, or RunStatus.profile)
before arming the default LIVE-RUN policy, and includes node-finished in it only when that profile elides
the verify gates (above).
Optimize loop → in-band, NON-BLOCKING notification.runOptimizeLoop is a multi-round machine
(converged / stalled / circuit-breaker) DESIGNED to keep going through rejects. So the optimize wake tees the
matched event to you WITHOUT tearing the loop down: NEVER abort the loop on a routine gated:reject /
fixer-aborted — reject is the common case, and killing the loop kills the machine that would try the next
candidate. "Act immediately" here means YOU adjudicate immediately, not that the process dies. Abort the loop
ONLY on a genuinely terminal event (loop-stopped / stopped / fix-cycle-ceiling).
Build status (don't fake a wake you can't register): matchWake / WakePolicy / --wake-on and the
awaiting-input fold-passthrough are TO-BUILD (core/observe/wake.ts + the two CLI wirings); the
telemetryStream thresholds override already EXISTS (only the CLI-side clause→thresholds plumbing is
missing). The node-finished predicate is likewise TO-BUILD — the node-close event it matches already
EXISTS in the fold (telemetry.ts:342,451-455); only the predicate itself and the profile-conditional
default-policy wiring are missing. Until it ships, arm the closest existing surface (telemetry --watch /
optimize --fix --watch) and FILE the gap.
The reconcile loop (run this every turn — k8s-style)
desired state → observe → diff → ONE action → re-observe. Continuously, never fire-and-forget:
Desired — what is this run/optimize supposed to reach? (a green milestone; a gate ACCEPT; a landed fix.)
Observe — pull the stream + the artifacts. NEVER a blind unmonitored wait: a long run must be watched by
the watchdog (auto-abort) and by you (poll the stream). The M3 lesson: a 15-min unwatched run is a bug.
Diff — desired vs observed. Name the gap in one line.
Act — exactly ONE intervention from the decision policy. Change ONE variable (a budget, a steer, scope).
Re-observe — verify the action's effect against artifacts, then loop.
The decision policy (the bar — OBSERVABLE predicate → action)
Every row keys on something you can read off the stream/artifacts. No row keys on intent or a node's claim.
corruption on an OFF-CRITICAL-PATH agent. SUBSTRATE has NO fixer-aborted signal — a runaway substrate fixer surfaces only as the run's node-timeout; on the CLASSIC engine key on fixer-aborted (rabbit-hole / repro-probe / no-progress)
let the timeout SIGKILL it; you confirm — never a live producer mid-run
RERUN
recoverable miss: rate-limit / transient / a fixable steer was missing
rerun with ONE thing changed (a budget, evidence, a steer). Identical rerun is forbidden — it just re-loops
NUDGE
the agent is on the right trail but won't commit (diagnoses-forever)
re-run optimize fix --node <id> --issue <name> — the retry loop auto-spawns a FRESH candidate worktree and threads the prior reject's {category,steer} into the next attempt (retry-loop.ts:182-184); no --resume surface on the substrate fixer (that is classic-only)
ESCALATE
architectural / ambiguous / failed after the management plane's bound (N retries, run-count)
HALT, hand to the human WITH evidence. Never invent a fix beyond the node's scope
LAND
the gate ACCEPTs (a gated{accept:true} on the substrate soft path, or a numeric strict-improvement), verified against the proved candidate — the issue sits at verifying with a staged record
run piflowctl optimize adopt --node <id> [--issue <name>] yourself — it cherry-picks candidateSha and walks the issue verifying→resolved. A separate, explicit step; fix/verify NEVER land
Seam-gating the table (cross-wire with the seam law below). A wake fires freely; the ACTION is gated by
which seam you're at. On a LIVE PRODUCER, a RERUN / NUDGE / re-plan is queued until the next
intervention-seam (--from relaunch) — you are woken freely but you do NOT mutate mid-node. On an OPTIMIZE
candidate, ABORT / RERUN / NUDGE / LAND act immediately (the candidate is off the critical path;
wake-seam and intervention-seam collapse). No row ever fires on a live producer mid-node.
The seam law (HARD CONSTRAINT — docs/ARCHITECTURE.md §5 "Seams / the control plane")
Hot-edits and interventions on a LIVE PRODUCER run happen at a node BOUNDARY (a seam), never mid-run: stop
at the boundary → splice the debug/control node → --from relaunch the affected suffix, reusing unchanged
upstream. You may abort/kill mid-run ONLY off the critical path — a candidate copy or a control node (the
optimize fixer edits a disposable candidate, so killing it never mutates a live run). Before any mid-run kill,
confirm the target is off the critical path; if it is a live producer, wait for the seam.
Two seams that NEST — wake-seam ⊇ intervention-seam (wake ≠ act).
wake-seam — the event interface that CALLS you: any fold event satisfying the registered WakePolicy. It
fires freely.
intervention-seam — the safe node BOUNDARY where you may ACT on a live producer (--from relaunch).
Every intervention-seam is a valid wake point, but NOT every wake is at an intervention-seam. For a live
producer you are woken freely but your ACTION waits — queue it until the next node boundary, then --from
relaunch. For an optimize candidate the two seams COLLAPSE (it is off the critical path) — which is exactly
why the optimize policy is fine-grained and the live policy is coarse.
Verify, don't trust
Judge from the stream + artifacts, never the node's self-report. "The agent finished" = the VCS diff shows
the change, not the agent's success line. A fixer that says "I fixed it" but whose candidate report.M3.json
is still passed:false did NOT land — the gate verdict, not the prose, is the truth. Treat every node summary
as a claim to be checked.
Your actuator — the piflowctl surface (defer the exact invocation to the sibling skills)
You act ONLY through the SDK CLI + skills, never ad-hoc bash. Run & monitor → piflow-start (piflowctl run … --from/--until, watch, status, logs). Optimize/fix (the classic binding-driven loop) → piflowctl optimize --fix --binding … --node … --watch with --edit-budget/--token-budget and the watchdog env knobs
(GAME_OMNI_FIXER_*). Name + solve a node's issue (the per-node SUBSTRATE loop — the one you drive) → piflow-triage
(piflowctl optimize triage --node <id>) → piflow-fixer (piflowctl optimize fix --node <id> [--issue <name>]; bare piflowctl optimize --node <id> runs ONLY triage→fix) → piflow-gate as the standalone
re-check (piflowctl optimize verify --node <id>) → land with piflowctl optimize adopt --node <id> [--issue <name>] (cherry-picks candidateSha), a separate, explicit step never a side effect of fix. You DECIDE which
loop and when; those skills hold the canonical command. (adopt --manifest is a dead pre-WS1 alias — do not use it.)
Your WAKE sources are telemetry --watch (run fold) and optimize --fix --watch (optimize stream), armed with
a --wake-on policy (§"The declarative wake-seam"); watch --notify is a terminal liveness ping only — never
your decision surface.
CLI you must know — the piflowctl quick-reference (a pointer map, not documentation)
These endpoints are the map, not the manual — to go deeper on any one, run piflowctl <verb> --help (or
piflowctl --help); never rediscover commands by grepping the repo or reading CLI source, that wastes context.
Keep skills fresh (do this first):piflowctl skills install . --force — refresh all authoring+maintenance
skills into .claude/skills/. ⚠ Gotcha: plural skills install is a DIFFERENT verb from singular skill add;
piflowctl skills --help is currently broken (errors), so use piflowctl --help to see it.
Run / resume a workflow:piflowctl run <templateDir> [--profile <p>] [--from <id>] [--until <id>] →
detail in piflow-start.
Observe a run:piflowctl status <rundir> · watch <rundir> · telemetry <rundir> [nodeId] [--watch] ·
trace <rundir> [nodeId] · logs <rundir> → detail in piflow-inspect.
Skill rings (resolve a node's bare skill ref):piflowctl skill list|search|add — distinct from skills install.
Editing a node/template? the standards reference:piflow-maintenance. Creating a workflow:piflow-init.
Self-check (the bar for a good overlord turn — audit before you report)
The decision cites a quoted observable signal (stream event / artifact / verdict), not a vibe.
A deterministic call was delegated to the management plane (no hand-rolled run-count/budget in prose).
No blind unmonitored run was left running (watchdog + your polling both cover it).
Any mid-run kill targeted an off-critical-path agent; a live producer was touched only at a seam.
The decision was verified against artifacts (diff / report / gate), not a self-report.
A RERUN changed exactly ONE variable; an ESCALATE carried evidence and invented nothing beyond scope.
You were woken by a wake-policy match and decided from the one-shot digest — not by babysitting the
stream, and not off a bare watch --notify liveness ping.
On a live producer the action was queued to the next intervention-seam; only an off-path
candidate (or the optimize loop, in-band) was acted on immediately, and the optimize loop was NOT aborted on
a routine gated:reject.
Anti-patterns (what loses a fleet)
❌ A blind long run with no watcher. ✅ Every run is watched by the reflex AND by you.
❌ Trusting a node's "done". ✅ Verify against the diff / report / gate verdict.
❌ Killing a live producer mid-run. ✅ Intervene at the seam → --from relaunch.
❌ Re-running identically "to see if it works this time". ✅ Change one variable, or escalate.
❌ Re-implementing run-count / budgets / timeouts in prose. ✅ Delegate to the management plane; read its verdict.
❌ Sitting in a for await babysitting the stream (you have no event loop). ✅ Be event-woken; the reflex
streams and handles per-event triggers — you window the one-shot digest.
❌ Adjudicating off a watch --notify liveness ping (can't tell DONE from FAILED, no digest). ✅ Wake off the
decision-grade fold (telemetry --watch / optimize --fix --watch).
❌ Aborting the optimize loop on a routine gated:reject/fixer-aborted (kills the multi-round machine). ✅
Wake in-band; abort the loop only on a terminal loop-stopped/stopped/fix-cycle-ceiling.
❌ Inventing a fix the node should make. ✅ Nudge the node, or escalate to the human.
Worked example — the fixer overlord (the live M3 case)
⚠️ This example is on the classic binding-driven engine (its fixer-trace stream + the game-omni
GAME_OMNI_FIXER_* watchdog). On the substrate loop the same story reads: fixer-started →
fixer-done{editsApplied:0} → gated{accept:false, reason} → staged{decision:'discarded'} → stopped,
with NO tunable watchdog (only the 30-min node timeout), and you NUDGE by re-running optimize fix --issue.
Goal (desired): the optimize gate records a strict-improvement ACCEPT on milestone M3.
Observe the --watch stream: fixer-started → 40 fixer-trace tool-calls (a pre-tuning run; the
game-omni default now trips no-progress at 22), fixer-done edits=0, gated reject (no edit applied).
Verify against the candidate report.M3.json (passed:false) — not the fixer's prose.
Diff: the agent diagnosed for the whole budget and never committed (a discipline failure, read off the
stream: its last trace was "settle whether Phaser auto-destroys groups" — going deeper, not editing).
Act — tune the product watchdog (GAME_OMNI_FIXER_*) so the next run aborts on no-progress
(noEditToolBudget, default 22 tool-calls / 0 edits) / dep-rabbit-hole (depReadBudget, default 3)
instead of running to the ~600s blind backstop — delegate the cutoff to the reflex. Then RERUN with ONE
variable changed: the evidence now carries the consoleErrors so the agent can see the crash. If it
diagnoses-but-won't-commit again → NUDGE (--resume "the fix is the .getChildren() guard; edit now").
If it fails past the bound → ESCALATE to the human with the trace + the gate verdict.
Re-observe the gate verdict; LAND only on a verified strict improvement.
This is the loop you run by hand today; this skill is that loop made repeatable for any occupant of the seat.
