True two-dev parallelism: a cell PM delegates the FULL set of code units up
front — each dev gets its own queue, both build at the same time, each works
its queue one task at a time in order. Replaces the old ceiling (≤2 code
subtasks per parent, one per dev) which structurally forced under-decomposition.
- Cap: `code` removed from `_SPINE_TYPE_CAPS` — no per-parent code cap (total
fan-out still bounded by `_SUBTASK_HARD_CAP=12`); `planning`/`documentation`
stay sequential at 1. `_same_assignee_rejection` exempts `code` so a dev may
own a queue, but still rejects an exact same-title duplicate (the accidental
re-delegation bug). `_spine_type_dup_envelope` simplified to the sequential
spine it now only serves.
- Dispatch barrier: `_blocked_by_earlier_lane_sibling` holds a dev's
higher-sequence pending code leaf while it still has an earlier non-terminal
code sibling under the same parent (keyed on assignee, gates only code) — the
dev works its queue in order. Wired into `_spawn_pending_dev`. Loop-free
(skip the tick, no reject/respawn) and best-effort (lookup failure → dispatch),
mirroring the existing merge barrier. The merge barrier is unchanged: leaf
PRs still merge serially in sequence order into the shared cell branch, so the
independent build lanes never wedge it.
- Prompt: cell_pm role guidance rewritten from the two-subtask-cap model to the
per-dev-queue model (delegate all units now; dependent units go in one dev's
queue, upstream first).
Independent per-dev queues (each lane advances at its own pace) rather than
strict cross-dev wave-sync, by design — more parallel and leaves the
wedge-prone merge barrier untouched. Pairs with the spec-2 idle coverage gate:
removing the code cap lets a PM claim every criterion up front, so that gate is
always satisfiable.
- Intake / Main-PM / Cell-PM prompts: enumerate independently-shippable work
units, inherit the breakdown down the chain, and dispatch independents in
parallel (dependency order, never one-at-a-time).
- Raise the code-spine concurrency cap from 1 to 2 per parent (one per cell
developer) so both devs build in parallel; keep the same-assignee guard and
the planning/documentation cap at 1, plus the cross-team planning exemption.
- Split-before-claim: hard-block an egregiously-bundled code leaf at delegate
time so the PM splits it before any dev claims it; nudge the moderate band
in the delegate success envelope.
Task #157 — spine-cap allows planning fanout across cells:
main-pm's pattern is to delegate planning to be-pm / fe-pm / ux-pm
in parallel — each on a different team. The previous spine-cap
rejected all planning siblings under one parent as
over-decomposition. New helper _is_cross_team_planning skips the
cap for planning when both teams are non-empty and distinct. Code
/ documentation stay capped regardless (single repo on one branch
shouldn't have two simultaneous code subtasks).
Task #159 — tracing-gap remediate hints every requirement:
journal:during_work>=1, journal:struggle, commits>=1, pr_open,
and self_verified had no entries in _hint_for_missing_key, so when
they were missing the agent saw the token in `missing[]` but the
`remediate` text had no instruction for how to satisfy them.
Smoke-10's be-dev-1 burned multiple turns retrying i_am_done not
knowing scope='reflect' doesn't count toward during_work. Now
every token has a hint, the during_work hint warns that reflect
doesn't satisfy it, and multi-hint remediate uses a numbered list
so the model treats each requirement as a distinct step instead
of a semicolon-blob.
Also coerce convert_plan._coerce_risk formatting (ruff-format follow-up
to 9cd73d0).
Renn F