chore: remove simplify step from Claude PR review and add prek rule

Drop the /simplify step that caused unprompted refactors and scope
creep in PR reviews. Also add prek pre-commit rule to project config
so the PR bot and all contributors see it.

Author: KRRT7

.claude/rules/code-style.md

@@ -9,3 +9,4 @@
 - **Naming**: NEVER use leading underscores (`_function_name`) - Python has no true private functions, use public names
 - **Paths**: Always use absolute paths
 - **Encoding**: Always pass `encoding="utf-8"` to `open()`, `read_text()`, `write_text()`, etc. in new or changed code — Windows defaults to `cp1252` which breaks on non-ASCII content. Don't flag pre-existing code that lacks it unless you're already modifying that line.
+- **Pre-commit**: Run `uv run prek` before committing — fix any issues before creating the commit

.github/workflows/claude.yml

@@ -192,12 +192,6 @@ jobs:
             *Last updated: <timestamp>*
             </step>
 
-            <step name="simplify">
-            Run /simplify to review recently changed code for reuse, quality, and efficiency opportunities.
-            If improvements are found, commit with "refactor: simplify <description>" and push.
-            Only make behavior-preserving changes.
-            </step>
-
             <step name="merge_optimization_prs">
             Check for open PRs from codeflash-ai[bot]:
             `gh pr list --author "codeflash-ai[bot]" --state open --json number,title,headRefName,createdAt,mergeable`
@@ -219,7 +213,7 @@ jobs:
             - All findings are in a single summary comment (no inline review comments were created)
             - If fixes were made, they were verified with prek
             </verification>
-          claude_args: '--model us.anthropic.claude-sonnet-4-6 --max-turns 25 --allowedTools "Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*),Bash(gh pr checks:*),Bash(gh pr merge:*),Bash(gh issue view:*),Bash(gh issue list:*),Bash(gh api:*),Bash(uv run prek *),Bash(uv run mypy *),Bash(uv run coverage *),Bash(uv run pytest *),Bash(git status*),Bash(git add *),Bash(git commit *),Bash(git push*),Bash(git diff *),Bash(git checkout *),Read,Glob,Grep,Edit,Skill"'
+          claude_args: '--model us.anthropic.claude-sonnet-4-6 --allowedTools "Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*),Bash(gh pr checks:*),Bash(gh pr merge:*),Bash(gh issue view:*),Bash(gh issue list:*),Bash(gh api:*),Bash(uv run prek *),Bash(uv run mypy *),Bash(uv run coverage *),Bash(uv run pytest *),Bash(git status*),Bash(git add *),Bash(git commit *),Bash(git push*),Bash(git diff *),Bash(git checkout *),Read,Glob,Grep,Edit"'
           additional_permissions: |
             actions: read