revert last 5 commits that may have caused landing page load error (#576)

* Revert last 5 commits

* revert last 5 commits

CLAUDE.md

@@ -1 +0,0 @@
-AGENTS.md

CLAUDE.md

@@ -0,0 +1,155 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Dify documentation repository built with Mintlify, supporting multi-language documentation (English, Chinese, Japanese) with AI-powered automatic translation via Dify workflows.
+
+## Documentation Structure
+
+- **Format**: MDX files with YAML frontmatter (`title` and `description` required)
+- **Languages**: `en/`, `cn/`, `jp/` (source: en)
+- **Configuration**: `docs.json` (navigation structure) - [Mintlify schema](https://mintlify.com/docs.json)
+
+## Translation System
+
+### Language Configuration
+
+All language settings in `tools/translate/config.json` (single source of truth):
+
+```json
+{
+  "source_language": "en",
+  "target_languages": ["cn", "jp"],
+  "languages": {
+    "en": {"code": "en", "name": "English", "directory": "en"},
+    "cn": {
+      "code": "cn",
+      "name": "Chinese",
+      "directory": "cn",
+      "translation_notice": "<Note>⚠️ AI translation...</Note>"
+    }
+  }
+}
+```
+
+**Adding new language**: Edit config.json only - add to `target_languages` and `languages` object with required fields.
+
+### Workflow
+
+- **Trigger**: Push to non-main branches with `.md/.mdx` changes in `en/`
+- **Process**: Dify API streaming mode with terminology database (`termbase_i18n.md`)
+- **Timing**: New files ~30-60s/lang | Modified files ~2-3min/lang (context-aware with git diff)
+- **Auto-operations**: Translation notices, incremental docs.json sync
+
+### Surgical Reconciliation (Move & Rename)
+
+**Purpose**: Detect and apply structural changes (moves, renames) from English section to cn/jp automatically.
+
+**How it works**:
+1. Compares English section between base commit and HEAD
+2. Detects **moves** (same file, different `group_path`) and **renames** (deleted+added in same location)
+3. Applies identical operations to cn/jp using **index-based navigation**
+
+**Index-based navigation**:
+- Groups matched by position index, not name (works across translations: "Nodes" ≠ "节点")
+- Location tracked as `group_indices: [0, 1]` (parent group index 0, child index 1)
+- Navigates nested structures regardless of translated group names
+
+**Rename specifics**:
+- Detects file extension (.md, .mdx) from physical file
+- Preserves extension when renaming cn/jp files
+- Updates docs.json entries (stored without extensions)
+
+### Navigation Sync Behavior
+
+**Manual editing**: Only edit English (`en`) section in docs.json - workflow syncs to cn/jp automatically.
+
+**Auto-sync operations**:
+- **Added files**: Fresh translation, inserted at same index position as English
+- **Modified files**: Context-aware update using existing translation + git diff
+- **Deleted files**: Removed from all language sections + physical files
+- **Moved files**: Detected via `group_path` changes, cn/jp relocated using index-based navigation
+- **Renamed files**: Detected when deleted+added in same location, physical files renamed with extension preserved
+
+## Development Commands
+
+```bash
+# Local preview
+npm i -g mintlify
+mintlify dev
+
+# Local translation testing
+pip install -r tools/translate/requirements.txt
+echo "DIFY_API_KEY=your_key" > tools/translate/.env
+python tools/translate/main.py
+```
+
+**Configuration**:
+- Terminology: `tools/translate/termbase_i18n.md`
+- Languages: `tools/translate/config.json`
+- Model: Configure in Dify Studio
+
+**Git Rules**:
+- NEVER use `--no-verify` or skip hooks
+- Create new branch for each feature/fix
+- Commit frequently with descriptive messages
+
+## Testing & Debugging
+
+### Test Translation Workflow
+
+Create test PR with branch name `test/{operation}-{scope}`:
+
+- **Add**: New file + docs.json entry
+- **Delete**: Remove file + docs.json entry
+- **Update**: Modify existing file content
+- **Move**: Move file between groups in docs.json (e.g., Getting Started → Nodes)
+- **Rename**: Rename file + update docs.json entry (tests extension preservation)
+
+### Common Issues
+
+**Translation failures**:
+- **HTTP 504**: Verify `response_mode: "streaming"` in `main.py` (NOT `"blocking"`)
+- **Missing output**: Check Dify workflow has output variable `output1`
+- **Failed workflow**: Review Dify workflow logs for node errors
+
+**Move/Rename issues**:
+- **Not detected**: Check logs for "INFO: Detected X moves, Y renames" - if 0 when expecting changes, verify `group_path` actually changed between commits
+- **Wrong location**: Structure mismatch between languages - verify group indices align (same nested structure)
+- **File not found**: Extension detection failed - ensure file has .md or .mdx extension
+
+**Success log pattern**:
+```
+INFO: Detected 1 moves, 0 renames, 0 adds, 0 deletes
+INFO: Moving en/test-file from 'Dropdown > GroupA' to 'Dropdown > GroupB'
+SUCCESS: Moved cn/test-file to new location
+SUCCESS: Moved jp/test-file to new location
+```
+
+## Translation A/B Testing
+
+For comparing translation quality between models or prompt variations:
+
+```bash
+cd tools/translate-test-dify
+./setup.sh
+source venv/bin/activate
+python run_test.py <spec.md>
+python compare.py results/<folder>/
+```
+
+**Important**:
+- Never commit `results/`, `mock_docs/`, or real API keys
+- Always redact keys with `app-***` before committing
+- See `tools/translate-test-dify/README.md` for details
+
+## Key Paths
+
+- `docs.json` - Navigation structure
+- `tools/translate/config.json` - Language configuration (single source of truth)
+- `tools/translate/termbase_i18n.md` - Translation terminology database
+- `tools/translate/sync_and_translate.py` - Core translation + surgical reconciliation logic
+- `tools/translate-test-dify/` - Translation A/B testing framework
+- `.github/workflows/sync_docs_*.yml` - Auto-translation workflow triggers