phase3: improve arg-bang handler (allow ! in chains, ; terminator). 574->440

tools/nullfix.py

@@ -121,7 +121,7 @@ def insert_arg_bang(line, col0):
         elif ch in ')]}':
             if depth==0: end=i; break
             depth-=1
-        elif ch==',' and depth==0: end=i; break
+        elif ch in ',;}' and depth==0: end=i; break
     if end is None: end=len(line)
     # 值的实际末尾（跳过空白）
     j=end-1
@@ -132,7 +132,7 @@ def insert_arg_bang(line, col0):
     if not val: return None
     if val[0] in '0123456789"\'': return None      # 字面量跳过
     if val in ('true','false','null'): return None
-    if not re.fullmatch(r'[\w.\[\]()]+', val): return None  # 含运算符等跳过
+    if not re.fullmatch(r'[\w.\[\()!]+', val): return None  # 含运算符/空格跳过
     return line[:j+1]+'!'+line[j+1:]
 
 def make_field_nullable(lines, name):