pdca-watch

name	pdca-watch
classification	workflow
classification-reason	Live PDCA dashboard tied to bkit's state machine + token ledger
deprecation-risk	none
effort	low
description	Live PDCA dashboard ticking every 30s — reads pdca-status.json + token-ledger.ndjson tail, renders fixed-width panel via CC /loop. Triggers: pdca watch, live dashboard, watch progress
argument-hint	[feature]
user-invocable	true
allowed-tools	["Read","Glob"]
imports	[]
next-skill	null
pdca-phase	null
task-template	[Watch] {feature}

PDCA Watch — Live Tick Dashboard

v2.1.11 Sprint β FR-β4. Wraps lib/dashboard/watch.js over CC's /loop (v2.1.71+). Read-only — only consumes state files; never writes. Falls back to a single render when /loop is unsupported (E-β4-01).

Arguments

Argument	Description	Example
(none)	Auto-resolve active feature from pdca-status.primaryFeature	/pdca-watch
<feature>	Watch a specific feature by name	/pdca-watch bkit-v2111-integrated-enhancement

Behavior

Resolution

1. If <feature> is provided, use it verbatim.
2. Else read .bkit/state/pdca-status.json → primaryFeature, then activeFeatures[0] as fallback.
3. If still no feature → render "No active PDCA feature. Start one with /pdca pm <feature>" and exit.

Tick (every 30s via /loop)

For each tick, lib/dashboard/watch.js#renderTick produces a panel with:

Watch  <feature> — tick N (HH:MM:SS)
─────────────────────────────────────────────────────────────
Phase: <phase>     Match: <%>    Iter: <n / 5>
Tokens: <in> in / <out> out · samples <N>
Est cost: $<USD>
─────────────────────────────────────────────────────────────

Data sources:

• Phase / matchRate / iterationCount: pdca-status.features[<feature>]
• Token totals: last 50 lines of token-ledger.ndjson
• Cost: Sonnet-class flat estimate ($3/Mtok in, $15/Mtok out)

Termination

• Ctrl-C from user
• Feature phase === 'completed' or phase === 'archived'
• After max 60 ticks (≈30 min) — caller restarts if more time needed

CC /loop Support

CC Version	Behavior
≥ 2.1.71	Native /loop 30s ticker
< 2.1.71	E-β4-01: single render + warning, no loop
Unknown	Same as < 2.1.71 (fail-safe)

The check is performed via watch.checkLoopSupport({ ccVersion }) — caller passes the resolved CC version from lib/infra/cc-version-checker.

Security

• Pure read on .bkit/state/pdca-status.json and .bkit/runtime/token-ledger.ndjson.
• Tail bounded to MAX_TAIL_LINES = 200 regardless of caller input — defends against pathological NDJSON growth.
• No subprocess spawning, no network.
• PII redaction on the ledger is owned by the writer (Token Accountant); watch only reads what's already redacted.

Module Dependencies

Module	Function	Usage
lib/dashboard/watch.js	resolveFeature()	Auto-detect when no arg
lib/dashboard/watch.js	renderTick()	One frame per tick
lib/dashboard/watch.js	tailLedger()	NDJSON tail (≤200)
lib/dashboard/watch.js	checkLoopSupport()	CC version gate
lib/infra/cc-version-checker.js	getCurrent()	Version source

Examples

# Auto-detect active feature
/pdca-watch

# Watch a specific feature
/pdca-watch bkit-v2111-integrated-enhancement

Related

• /pdca status — single snapshot (no loop)
• /control trust — trust score informs auto-escalation
• /pdca-fast-track — Daniel-mode auto-approve checkpoints

ARGUMENTS: