feat(files-widget): notify after sending inline comments

[tmustier]

Summary

• show a success toast after an inline comment is sent back to the agent
• include the file path and line range in the notification for quick confirmation
• mark the remaining comment-send notification TODO item as done

Validation

• tsc --noCheck --noEmit --moduleResolution nodenext --module nodenext --target ES2022 files-widget/*.ts

[tmustier]

pr-reviewer run 1

Findings

• [P2] Success toast reports queued comments as already sent
  files-widget/index.ts:48
pi.sendUserMessage(..., { deliverAs: "followUp" }) does not deliver immediately while the agent is streaming; per the API docs it queues the message until the current run finishes. The new “Comment sent to agent…” toast therefore gives false confirmation in the busy case, which is exactly when inline comments are likely to be used.
  Check ctx.isIdle?.() before choosing the toast text, or show “queued” while streaming instead of “sent”.

Verdict

needs attention — the new notification can claim delivery before the agent has actually received the inline comment.

[tmustier]

pr-reviewer run 2

Findings

Code looks good.

Verdict

correct — no remaining P0-P2 issues found in the current PR diff against main.