feat(claude/commands): add recent commits to commit-push-pr context

Give the agent visibility into recent commit history so it can
follow the project's commit message conventions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

claude/commands/commit-push-pr.md

@@ -9,6 +9,7 @@ source: https://github.com/anthropics/claude-plugins-official/blob/main/plugins/
 - Current git status: !`git status`
 - Current git diff (staged and unstaged changes): !`git diff HEAD`
 - Current branch: !`git branch --show-current`
+- Recent commits: !`git log --oneline -10`
 
 ## Your Task