fix(healing): escape stray {variable} placeholders that crash every LLM workflow generation

[Sangaibisi]

Bug

workflow_use/healing/prompts/workflow_creation_prompt.md lines 26/29 contain single-braced {variable} while every other placeholder in the file is correctly escaped as {{...}}. The template is rendered with str.format(goal=..., actions=...) (healing/service.py:296), so every call raises KeyError('variable').

Reproduce without any LLM key:

from pathlib import Path
content = Path('workflows/workflow_use/healing/prompts/workflow_creation_prompt.md').read_text()
content.format(goal='g', actions='a')   # KeyError: 'variable'

Impact

create_workflow_definition crashes after the browser agent has fully run — this is the default path of generate_workflow_from_prompt (HealingService(use_deterministic_conversion=False), used by the CLI), so every generation attempt burns a complete agent session + LLM cost and then dies.

Fix

Escape the two stray placeholders to {{variable}}. After rendering, the LLM still sees the intended single-braced {variable} example text.

Note

Found while auditing the replay/generation pipeline (see #165 for the recording-side findings). Happy to split or adjust if you'd like this folded into something larger.

🤖 Generated with Claude Code

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Summary by cubic

Escaped two stray {variable} placeholders in workflow_use/healing/prompts/workflow_creation_prompt.md to {{variable}} to stop KeyError from str.format. This fixes workflow generation crashes after the browser agent completes and avoids wasted sessions and cost.

^{Written for commit cf7d6bf. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 1 file

_{Re-trigger cubic}