Design agent attachment and inline fix suggestions in review

[jmqd]

Summary

Explore a tighter loop between trueflow review feedback and a live local agent session so review comments can turn into immediate fixes instead of only durable review records.

Design ideas

• allow --attach $AGENT (or similar) to attach trueflow to a local agent instance / creds
• allow review feedback to be passed directly into the attached agent session for immediate follow-up work
• allow lightweight inline one-line suggestions directly from the TUI comment box and/or mode line as review blocks are shown

Why this seems useful

Today trueflow is good at review and recordkeeping, but the loop from “noticed an issue” to “get the agent to fix it now” is still manual. A tighter agent-attachment model could make review feel more interactive, especially for small corrections, nits, and fix-forward suggestions.

Open design questions

• what does --attach actually attach to: a running local agent process, a credential/profile, or both?
• should attached-agent feedback still create normal review records, or can some suggestions be ephemeral?
• what is the right UX split between durable review comments vs immediate fix requests?
• should inline one-liner suggestions live in the existing comment box, the mode line, or a separate lightweight action?
• how do we avoid making TUI review feel noisy or over-automated?

Acceptance criteria

• there is a concrete design for attaching trueflow to a local agent session
• the UX for “review feedback that should trigger immediate fixes” is specified
• the distinction between durable review records and ephemeral inline suggestions is explicit
• at least one small implementation slice is identified after the design is settled