ticket: simplify ticket identity fields

.yoi/tickets/20260527-000021-001/item.md

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+---
+title: "Bashツールがファイル編集に常用されている問題をdesciptionで抑制"
+state: "closed"
+created_at: "2026-05-27T00:00:21Z"
+updated_at: "2026-05-31T22:36:34Z"
+---
+
+## Migration reference
+
+- legacy_ticket: null
+- migrated_from: TODO.md / tickets directory migration on 2026-05-27
+
+# Bashツールがファイル編集に常用されている問題をdesciptionで抑制
+
+## Background
+
+This work item was migrated from an unfinished TODO.md entry that did not have a dedicated legacy ticket file.
+
+## Acceptance criteria
+
+- Define the concrete requirements before implementation.

.yoi/tickets/20260527-000021-001/resolution.md

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+Closed without implementation for now. Current Bash tool description already nudges agents toward Read/Edit/Glob/Grep over shell-based file edits, and this is not urgent enough to carry as an active work item. If the behavior becomes a recurring problem, reopen as a focused prompt-description polish ticket covering Bash child processes such as cat/tee/sed/perl/python rewrites.

.yoi/tickets/20260527-000021-001/thread.md

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+<!-- event: migration author: tickets.sh-migration at: 2026-05-27T00:00:21Z -->
+
+## Migrated
+
+Migrated from TODO.md entry without a legacy ticket file. No legacy review file was present at migration time.
+
+---
+
+<!-- event: close author: hare at: 2026-05-31T22:36:34Z status: closed -->
+
+## Closed
+
+Closed without implementation for now. Current Bash tool description already nudges agents toward Read/Edit/Glob/Grep over shell-based file edits, and this is not urgent enough to carry as an active work item. If the behavior becomes a recurring problem, reopen as a focused prompt-description polish ticket covering Bash child processes such as cat/tee/sed/perl/python rewrites.
+
+
+---