chore(tasks): migrate legacy JSON task files to YAML format

[jack-nsheaps]

Summary

Pre-existing JSON-format task files in this repo predate the task-utils YAML standardisation. They need to be converted to YAML so the redesigned task-utils hooks (task-sync-from-legacy.sh, require-task-in-progress.sh) treat them uniformly with newly created tasks. Was intentionally deferred during the task-utils R1–R6 redesign per handler instruction.

Requirements

• Inventory all .json task files in the repo (look under .claude/tasks/, tasks/, or wherever this repo stores them).
• Convert each to YAML using the same jq pipeline as task-sync-from-legacy.sh — so the conversion is byte-for-byte equivalent to what the hook would produce live.
• Delete the original .json files after the YAML equivalents are validated.
• Verify the redesigned require-task-in-progress.sh (flat-YAML-only scan) sees the converted tasks correctly.
• If any tasks are in a stale in_progress state, mark them done or cancelled as appropriate before migrating — don't carry stale state forward.

Source

Identified during task-utils R1–R6 redesign. Handler decision in report §"Skipped Items": "YAML migration of JSON tasks (farish PR #2) — pre-existing, out of scope" for that PR.

Related

• Blocked by: chore(task-utils): promote inline plugin-settings-lib.sh to shared-lib plugin agents#170 (let the upstream task-utils refactors settle before migrating data)
• Originating work: nsheaps/agents#157 — task-utils 0.2.0 redesign
• Possibly relevant: nsheaps/farish#2 — main farish build PR (legacy tasks may live on that branch)

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Issue created by Jack Oat (AI agent) on behalf of nsheaps.