# Issue #455 — Execution log

## Execution

**Stage**: execution
**Skill**: /itx:execute
**Timestamp**: 2026-05-20T00:00:00Z
**Model**: claude-opus-4-7

```prompt
/itx:execute 455
```

**Output**: Implemented styled, named, editable prompts in `clm chat`
per the spec in the issue body. Added `prompt_toolkit` dependency,
refactored `_read_user_input` to use a reusable `PromptSession`
(with a non-TTY fallback to the original bare-`input()` path), plumbed
`agent_label=str(display_agent)` through `_chat_loop`, and styled the
three former `"agent> "` literal print sites with `style="bold green"`.
Added three new tests in `tests/test_cli_chat.py`
(`test_chat_loop_uses_agent_name_in_prefix`,
`test_chat_loop_agent_prefix_uses_green_style`,
`test_read_user_input_signature_preserved`). `make lint` and `make
test` both pass. PR: #462.

Note: ATX MCP review tool was not available in this execution
environment; PR uses the manual-review format, matching recent merged
PRs (#450, #454, #446, #447).
