fix(razor): extract methods from @functions blocks, not just @code

@code is the Blazor (.razor) spelling of an embedded C# member block;
@functions is the equivalent Razor Pages / MVC (.cshtml) spelling. Both
compile to class members, and this extractor serves both file types, but
only @code was matched. A .cshtml page that declared its methods inside an
@functions block lost every one of them.

Match @functions alongside @code in the block regex; the existing
brace-balanced body scan and method extraction are reused unchanged.

graphify/extractors/razor.py

@@ -9,7 +9,7 @@ from graphify.security import sanitize_metadata
 
 
 def extract_razor(path: Path) -> dict:
-    """Extract directives, component refs, and @code methods from .razor/.cshtml."""
+    """Extract directives, component refs, and @code/@functions methods from .razor/.cshtml."""
     try:
         src = path.read_text(encoding="utf-8", errors="replace")
     except OSError:
@@ -158,7 +158,11 @@ def extract_razor(path: Path) -> dict:
         line_num = src[:m.start()].count("\n") + 1
         _add_ref(comp_name, "calls", line_num)
 
-    _CODE_BLOCK_RE = re.compile(r'@code\s*\{', re.MULTILINE)
+    # @code is the Blazor (.razor) spelling; @functions is the equivalent
+    # Razor-Pages / MVC (.cshtml) spelling. Both compile to class members, and
+    # this extractor serves both file types, so a .cshtml that declares its
+    # methods in an @functions block lost every one of them.
+    _CODE_BLOCK_RE = re.compile(r'@(?:code|functions)\s*\{', re.MULTILINE)
     for m in _CODE_BLOCK_RE.finditer(src):
         block_start = m.end()
         depth = 1

tests/test_languages.py

@@ -3719,6 +3719,23 @@ def test_razor_finds_code_block_methods():
     assert any("IncrementCount" in l for l in labels)
     assert any("LoadData" in l for l in labels)
 
+def test_razor_finds_functions_block_methods(tmp_path):
+    # @functions is the Razor Pages / MVC (.cshtml) spelling of the Blazor
+    # @code block. Both compile to class members and this extractor serves both
+    # file types, but only @code was recognised, so .cshtml methods vanished.
+    page = tmp_path / "Page.cshtml"
+    page.write_text(
+        "@functions {\n"
+        "    public int Square(int x) { return x * x; }\n"
+        "    public string Greet() { return \"hi\"; }\n"
+        "}\n",
+        encoding="utf-8",
+    )
+    r = extract_razor(page)
+    labels = _labels(r)
+    assert "Square" in labels
+    assert "Greet" in labels
+
 def test_razor_no_dangling_edges():
     r = extract_razor(FIXTURES / "sample.razor")
     node_ids = {n["id"] for n in r["nodes"]}