Closes Stream H Task 6 (H4). Retires the manual approval-write workaround
the controller used throughout Stream H Tasks 1-5.
Two changes:
1. Pure module tools/askuser-answer-parser.mjs gains toApprovalRecord(answer, opts)
exporter that detects a git verb in the user's free-form answer and returns
a Stream B-compatible {type:'approve_git_operation', command, ts} record
(matches loadApprovedGitOps reader format in shell-content-rules.mjs:125).
Returns null for non-git answers and for stop/abort/cancel keywords.
2. New PostToolUse(AskUserQuestion) wrapper tools/enforce-askuser-answer-parser.mjs
reads each question/answer pair, calls toApprovalRecord, appends matching
records to ~/.claude/runtime/askuser-decisions-<sess>.jsonl. Fail-open
observability — never blocks AskUserQuestion.
Regression: vitest tools 1742/1742 GREEN (was 1731; +5 toApprovalRecord tests
under "toApprovalRecord (Stream H Task 6 — schema sync)" including non-string
guard, +6 wrapper-hook tests under "enforce-askuser-answer-parser wrapper
(Stream H Task 6)" including missing session_id fail-open guard).
DEFERRED: settings.json registration (matcher "AskUserQuestion", PostToolUse,
fail-open, timeout 2000ms) — batched with H5/H6/H7/H8 hook activations at end
of Phase H-α/H-β. Hook code is fully implemented and unit-tested; activation
pending settings.json update.
Stream H Task 6 of 11. Plan: docs/superpowers/plans/2026-05-30-router-gate-v4-stream-H.md
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