v1.2.3

## What's Changed
* docs: Add uv tool installation instructions by @mikeyobrien in https://github.com/mikeyobrien/ralph-orchestrator/pull/35
* refactor(adapters): Move scratchpad instructions to base adapter by @mikeyobrien in https://github.com/mikeyobrien/ralph-orchestrator/pull/37
* feat: add default completion promise by @mikeyobrien in https://github.com/mikeyobrien/ralph-orchestrator/pull/38
* Improve ACP tool call visibility by @mikeyobrien in https://github.com/mikeyobrien/ralph-orchestrator/pull/41
* fix: correct agent validation in _apply_codex_shortcut by @CoderMageFox in https://github.com/mikeyobrien/ralph-orchestrator/pull/42
* Add ACP agent profiles and Gemini-specific handling by @mikeyobrien in https://github.com/mikeyobrien/ralph-orchestrator/pull/43
* fix(completion-detection): detect completion string by @mikeyobrien in https://github.com/mikeyobrien/ralph-orchestrator/pull/49
* release/v1.2.3 by @mikeyobrien in https://github.com/mikeyobrien/ralph-orchestrator/pull/56

## New Contributors
* @CoderMageFox made their first contribution in https://github.com/mikeyobrien/ralph-orchestrator/pull/42

**Full Changelog**: https://github.com/mikeyobrien/ralph-orchestrator/compare/v1.2.2...v1.2.3