Submitting a plan's Questions form now persists it: POST /api/plan/answers
validates against the plan's spec, folds an ## Answers section into the plan
file (data/plans remounted rw in the homelab compose), and records a
submitted plan-type form linked to the planning session. New /forms page
lists every form (ask-form + plan) with a link back to its conversation
(conversationId joined from transcript summaries). Plan detail carries the
persisted answers; the questions form seeds from them and shows saved state.
Bumps @gabvdl/ui to 0.36.1 (stale local install broke the build).
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