Overseer verify tick

Catalogue row: overseer_verify_tick · Replacement: none yet

This skill is a temporary prose interface. The watchdog it wraps already
exists; what did not exist was a name for the recurring process of running it
and acting on the result, which is why this row was recorded as partial rather
than as present.

What it wraps

The dispatch watchdog. Which lanes are in scope, how a lane's last write is
read, and where stall findings are recorded are overlay content.

Overlay

Resolve the overlay with the shared resolver, the same search order every
overlay-configured skill uses:

python3 "${CLAUDE_PLUGIN_ROOT}/scripts/resolve_skill_overlay.py" overseer_verify_tick

Order	Location	Kind
1	OVERSEER_VERIFY_TICK_OVERLAY_PATH	explicit pointer — a miss is a hard stop, never a fall-through
2	each root in ONEX_SKILL_OVERLAY_ROOTS, joined with overseer_verify_tick/overlay.yaml	discovered

It prints the resolved path, or exits non-zero naming every location it
tried. A non-zero exit is a hard stop, not a fall back to a default —
there is no default. Report its standard error and stop.

Field	What it holds
lane_inventory_command	how the live lane set is enumerated
last_write_locator	how a lane's most recent write is read
positive_control_command	the same enumeration against a lane known to be live
stall_threshold_minutes	the default age at which a lane counts as stalled
finding_surface	where a stall finding is recorded

Preflight, by intent

Run the preflight first, at the given intent.

Verification contract

Every stalled lane is named with the age of its last write, or a zero is
proven by a positive control against a lane known to be live.

The tick has to add to or subtract from the live lane set, or say plainly why it
did neither. "Nothing stalled" is a legitimate outcome exactly once per run and
only with its control attached — an enumeration that silently returned nothing
produces the same sentence and means the opposite.

A stalled lane is named, with the age of its last write, and the finding is
recorded on finding_surface. It is not summarised as a count.

Mechanical replacement

none yet. The replacement is a watchdog that runs on its own schedule,
writes a firing receipt before it enumerates, and refuses to emit a zero without
its control. That removes the two ways this row fails today: nobody ran it, and
somebody ran it against an enumeration that was broken.

What this skill does NOT do

• Stop, restart or message any lane — it observes and records
• Report a zero without its positive control
• Match processes by command substring when acting on a finding; a stall is
  named by its own identifier, never by a pattern that matches its peers
• Name a lane, a host or a path in this file