diff --git a/docs/gen_api_ref_v2.py b/docs/gen_api_ref_v2.py
new file mode 100644
index 0000000..3d481f8
--- /dev/null
+++ b/docs/gen_api_ref_v2.py
@@ -0,0 +1,194 @@
+#!/usr/bin/env python3
+"""Improved Doxygen→Markdown extractor. Handles multi-line signatures."""
+import re, os, glob
+
+def read_until_braces(text, start):
+    """Read from start position until we find a complete function/struct/enum declaration.
+    Returns (full_signature, end_position)"""
+    pos = start
+    result = []
+    paren_depth = 0
+    angle_depth = 0
+    found_open = False
+    found_template = False
+    
+    while pos < len(text):
+        ch = text[pos]
+        result.append(ch)
+        
+        if ch == '(':
+            paren_depth += 1
+            found_open = True
+        elif ch == ')':
+            paren_depth -= 1
+        elif ch == '<' and found_open:
+            angle_depth += 1
+        elif ch == '>' and found_open:
+            angle_depth -= 1
+        elif ch == '{' and found_open and paren_depth == 0 and angle_depth == 0:
+            # Function body started
+            break
+        elif ch == ';' and found_open and paren_depth == 0 and angle_depth == 0:
+            # Declaration ended
+            break
+        elif ch == '\n' and not found_open:
+            # Too many newlines without finding a function
+            if len(result) > 200:
+                break
+        
+        pos += 1
+    
+    return ''.join(result).strip(), pos + 1
+
+def extract_blocks(text):
+    """Extract /** */ blocks and the function/struct/enum that follows."""
+    results = []
+    for m in re.finditer(r'/\*\*\s*\n(.*?)\*/', text, re.DOTALL):
+        doc_raw = m.group(1)
+        after_start = m.end()
+        
+        # Skip whitespace, includes, comments
+        while after_start < len(text):
+            ch = text[after_start]
+            if ch in ' \t\n\r':
+                after_start += 1
+                continue
+            line_start = after_start
+            line_end = text.find('\n', line_start)
+            if line_end < 0: line_end = len(text)
+            line = text[line_start:line_end].strip()
+            if line.startswith('#') or line.startswith('//') or line.startswith('using ') or line == '':
+                after_start = line_end + 1
+                continue
+            break
+        
+        if after_start >= len(text):
+            continue
+            
+        # Read full signature (multi-line)
+        sig, end_pos = read_until_braces(text, after_start)
+        
+        # Clean doc
+        doc_lines = []
+        for line in doc_raw.split('\n'):
+            line = line.strip()
+            if line.startswith('*'):
+                line = line[1:].strip()
+            if line.startswith('@') or line:
+                doc_lines.append(line)
+        clean_doc = '\n'.join(doc_lines).strip()
+        
+        results.append((clean_doc, sig))
+    
+    return results
+
+def to_md(doc, sig):
+    """Convert doxygen doc + signature to markdown."""
+    brief, params, ret, notes, sees, warns = '', [], '', [], [], []
+    in_code = False
+    
+    for line in doc.split('\n'):
+        line = line.strip()
+        if line.startswith('@brief '):
+            brief = line[7:]
+        elif line.startswith('@param '):
+            params.append(line[7:])
+        elif line.startswith('@return ') or line.startswith('@retval '):
+            ret = line.split(' ', 1)[1] if ' ' in line else ''
+        elif line.startswith('@note '):
+            notes.append(f'> {line[6:]}')
+        elif line.startswith('@warning '):
+            warns.append(f'> 🔴 {line[9:]}')
+        elif line.startswith('@see '):
+            sees.append(line[5:].strip())
+        elif line.startswith('@code'):
+            in_code = True
+        elif line.startswith('@endcode'):
+            in_code = False
+        elif line.startswith('@ingroup') or line.startswith('@defgroup'):
+            pass
+        elif not in_code and line and not line.startswith('@') and not line.startswith('\\'):
+            if not brief:
+                brief = line
+    
+    if not brief:
+        return ''
+    
+    md = f"### {brief}\n\n"
+    
+    # Clean signature
+    clean = sig.strip().rstrip(';')
+    if clean and 'namespace' not in clean and clean != '};':
+        # Truncate very long signatures
+        if len(clean) > 200:
+            # Find last complete parameter
+            paren = clean.rfind(')')
+            if paren > 50:
+                clean = clean[:paren+1]
+        md += f"```cpp\n{clean}\n```\n\n"
+    
+    if params:
+        md += "| 参数 | 说明 |\n|------|------|\n"
+        for p in params:
+            sp = p.split(' ', 1)
+            name = sp[0]
+            desc = sp[1] if len(sp) > 1 else ''
+            md += f"| `{name}` | {desc} |\n"
+        md += "\n"
+    
+    if ret:
+        md += f"**返回**: {ret}\n\n"
+    
+    for n in notes:
+        md += f"{n}\n\n"
+    for w in warns:
+        md += f"{w}\n\n"
+    
+    if sees:
+        md += f"**参见**: {', '.join(f'`{s}`' for s in sees)}\n\n"
+    
+    return md
+
+# Main
+all_headers = sorted(glob.glob('/ws/ViewDesignEngine/include/vde/**/*.h', recursive=True))
+modules = {}
+for h in all_headers:
+    mod = h.split('/include/vde/')[1].split('/')[0]
+    modules.setdefault(mod, []).append(h)
+
+out = ['# ViewDesignEngine API 参考手册\n\n> 版本 3.2.0 | 76 个头文件 | 自动生成\n\n']
+
+names = {
+    'foundation':'基础模块','core':'核心几何','curves':'曲线曲面','mesh':'网格处理',
+    'spatial':'空间索引','boolean':'布尔运算','collision':'碰撞检测','brep':'B-Rep建模',
+    'sdf':'SDF隐式建模','sketch':'草图约束','capi':'C API'
+}
+
+for mod in ['foundation','core','curves','mesh','spatial','boolean','collision','brep','sdf','sketch','capi']:
+    if mod not in modules: continue
+    out.append(f'## {names[mod]} (`vde::{mod}`)\n\n')
+    
+    for h in sorted(modules[mod]):
+        with open(h) as f: content = f.read()
+        blocks = extract_blocks(content)
+        if not blocks: continue
+        
+        fname = os.path.basename(h)
+        out.append(f'### {fname}\n\n')
+        
+        for doc, sig in blocks:
+            if len(doc) < 15 and not sig.strip(): continue
+            md = to_md(doc, sig)
+            if md.strip():
+                out.append(md)
+        out.append('\n')
+
+result = '\n'.join(out)
+
+# Remove empty ### headers
+result = re.sub(r'### \n\n+', '', result)
+
+with open('/ws/ViewDesignEngine/docs/API-REFERENCE.md', 'w') as f:
+    f.write(result)
+
+print(f'Written: {len(result)} chars, {result.count(chr(10))} lines')