revert: remove unnecessary CLAUDE.md documentation changes

Co-authored-by: astandrik <[email protected]>

Author: Copilot

CLAUDE.md

@@ -1,81 +1,6 @@
-# CLAUDE.md
+# AGENTS.md
 
-This file provides guidance for using Claude AI with this YDB Embedded UI codebase and documents the Claude code review workflow configuration.
-
-## Claude Code Review Workflows
-
-This repository includes two GitHub Actions workflows for Claude AI integration:
-
-### 1. Claude Code Review (`claude-code-review.yml`)
-
-- **Trigger**: Comment `/claude_review` on any PR
-- **Purpose**: Automated code review focusing on coding standards and best practices
-- **Model**: `claude-opus-4-20250514`
-
-### 2. Claude Code (`claude.yml`)
-
-- **Trigger**: Comment `@claude` on any PR or assign `claude-bot` to an issue
-- **Purpose**: Interactive Claude assistance for development tasks
-- **Model**: `claude-opus-4-20250514`
-
-### Workflow Architecture
-
-Both workflows use a robust reference resolution system to ensure Claude reviews the latest changes:
-
-1. **PR Reference Resolution**: When triggered by issue comments on PRs, workflows:
-
-   - Fetch the current PR details via GitHub API
-   - Extract the head commit SHA (latest changes)
-   - Checkout the actual PR head instead of the base branch
-
-2. **Fallback Logic**: For manual workflow dispatches, falls back to the default branch
-
-3. **Full Git History**: Uses `fetch-depth: 0` to provide complete context for reviews
-
-### Recent Fix (Issue #2651)
-
-**Problem**: Claude was reviewing stale data because workflows checked out the base branch instead of PR head.
-
-**Solution**: Added dynamic reference resolution:
-
-```yaml
-ref: ${{ github.event_name == 'issue_comment' && steps.pr-details.outputs.pr_head_sha || github.ref }}
-```
-
-This ensures Claude always reviews the current state of the PR, including any recent commits.
-
-### Testing the Workflow Fix
-
-To verify the Claude workflows are correctly checking out PR head commits:
-
-1. **Automatic Validation**: Both workflows include a validation step that:
-
-   - Logs the event type and commit SHA being checked out
-   - Verifies the checked out commit matches the expected PR head
-   - Fails with a clear error if the wrong commit is checked out
-
-2. **Manual Testing**:
-
-   - Create a test PR with some changes
-   - Add a comment with `/claude_review` or `@claude`
-   - Check the workflow logs for "Validate checkout (verification step)"
-   - Look for `✅ SUCCESS: Checked out correct PR head commit`
-
-3. **Test Script**: Run `.github/workflows/scripts/test-claude-workflow-fix.sh` to validate the logic locally
-
-4. **Expected Log Output**:
-   ```
-   === Workflow Checkout Validation ===
-   Event type: issue_comment
-   PR number: 123
-   Expected PR head SHA: abc123def456...
-   Checked out commit: abc123def456...
-   ✅ SUCCESS: Checked out correct PR head commit
-   ```
-
----
-
-# Project Development Guide
+This file provides guidance to AI coding assistants when working with this codebase. Designed for OpenAI Codex, GitHub Copilot, Claude, Cursor, and other AI development tools.
 
 ## Project Overview