Root cause: proposePlan unconditionally deleted and replaced the whole
session_plan_steps list on every call. The model isn't strictly held to
"call propose_plan once with the full list" — nothing stopped it (and
production evidence + live testing showed it happening) from calling
propose_plan once per step as it worked. Each such call wiped every
already-completed step, so the operator only ever saw the model's latest
single step ("1/1") instead of the real, growing plan.
Fix, two layers:
- store.go: proposePlan now only does a destructive replace when no step
has left 'pending' yet (a genuine pre-execution revision). Once any step
has started, a new call APPENDS after the current max seq instead of
wiping — so the panel accumulates the full history regardless of how the
model chooses to call the tool. plan.proposed now carries `appended` so
the frontend knows whether to replace or append.
- workspace.ts: plan.proposed handler respects `appended` (update vs set).
- tasks.go / SOUL.md: strengthened the propose_plan description and task-
loop guidance to call it ONCE with the complete step list end-to-end,
using update_plan_step (not re-calling propose_plan) to advance — fixing
the root behavioral cause, with the store-side append as a safety net
that holds even if the model still calls it incrementally.
Verified: forced the exact incremental-call pattern (propose_plan with 1
step, mark it running, propose_plan again with 1 more step) — the second
call appended at seq 2 instead of erasing seq 1, and its plan.proposed
event carried appended=true.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
dtoro
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