fix: use full type.name refs in TF needs and symbols to prevent over-matching

Author: nikolay-e

src/treemapper/diffctx/parsers/config.py

@@ -17,6 +17,15 @@
 
 
 def _tf_block_symbol(header_line: str) -> str | None:
+    m = re.match(r'^resource\s+"([^"]+)"\s+"([^"]+)"', header_line)
+    if m:
+        return f"{m.group(1)}.{m.group(2)}"
+    m = re.match(r'^data\s+"([^"]+)"\s+"([^"]+)"', header_line)
+    if m:
+        return f"data.{m.group(1)}.{m.group(2)}"
+    m = re.match(r'^variable\s+"([^"]+)"', header_line)
+    if m:
+        return m.group(1)
     names = re.findall(r'"([^"]+)"', header_line)
     return names[-1] if names else None
 

src/treemapper/diffctx/utility.py

@@ -423,8 +423,8 @@ def _collect_terraform_needs(
             ref_type, ref_name = m.group(1).lower(), m.group(2).lower()
             if ref_type in _TF_SKIP_REF_TYPES:
                 continue
-            if len(ref_name) >= 3 and ref_name not in CODE_STOPWORDS:
-                needs.setdefault(("definition", ref_name), InformationNeed("definition", ref_name, None, 0.9))
+            full_ref = f"{ref_type}.{ref_name}"
+            needs.setdefault(("definition", full_ref), InformationNeed("definition", full_ref, None, 0.9))
 
 
 def needs_from_diff(