[Fix] Automation action Sessions show internal execution prompts

[roomote-roomote]

​Opened on behalf of @mrubens. Follow up by mentioning @roomote-roomote, in the web UI, or in Slack.

What changed

• Automation-created action tasks now persist a concise title and brief as their visible Session prompt while keeping the full execution and security envelope in the existing agent-only prompt field.
• Task titles come directly from the structured work-item title instead of the execution prompt.
• Older auto-fix tasks project their visible prompt from the linked work-item title and brief, without parsing or exposing the legacy execution envelope.

Why this change was made

Automation action Sessions displayed their entire agent execution payload as the initial user message, including internal policies and untrusted-content wrappers. This made the transcript difficult to read and exposed implementation detail that belongs only in agent context.

Impact

Automation action Sessions show a short, readable title and brief on desktop and mobile. The agent still receives the complete scoped instructions and trust boundaries, and ordinary human-created Sessions keep their existing prompt behavior.

Screenshots

[roomote-community]

No code issues found. See task

_{Reviewed da2283d}