* feat(coding-agent,tui): support argument-hint frontmatter in prompt templates
Parse argument-hint from prompt template frontmatter and display it
in the autocomplete dropdown description, matching Claude Code's
convention for custom commands.
Frontmatter format:
---
description: Code review
argument-hint: "[file | #PR | PR-URL]"
---
The hint renders in the description column of the autocomplete list:
review [file | #PR | PR-URL] — Code review
Closes#2761
* docs(coding-agent,tui): add argument-hint documentation, tests, and built-in hints
- Document argument-hint frontmatter in prompt-templates.md with <required>/[optional] convention
- Add argument-hint to built-in prompts: pr, is, wr
- Expand tests: required/optional hints, missing hints, empty hints, special characters
- Add changelog entries for coding-agent and tui
Messages sent during branch summarization are added to the compaction
queue but never flushed when summarization ends. The user sees the
message in the steering queue and has to manually dequeue and resend it.
The fix is to flush the compaction queue after successful tree
navigation, matching the existing behavior of auto-compaction and
`/compact`. If the user jumps to a user message, the queued message is
sent as a prompt, and the jumped-to text is placed in the editor.