test(workspace): add 36-case coverage for shared_runtime helpers (closes #366) #511

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fcb5086132 test(workspace): add 36-case coverage for shared_runtime helpers (closes #366)
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Six helper functions previously had zero test coverage:

| Function | Cases |
|----------|-------|
| `_extract_part_text` | 10 — dict/object/root nesting, None, unexpected types |
| `extract_message_text` | 6 — parts list, context objects, whitespace |
| `format_conversation_history` | 4 — user/agent roles, interleaved history |
| `build_task_text` | 4 — history prepending, empty history |
| `append_peer_guidance` | 6 — base text, None/empty/whitespace, empty peers |
| `brief_task` | 6 — limit variants including 0/1 edge cases |

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-11 16:26:03 +00:00