fix(extraction): land upstream declaration initializer walks (#1511) (#1802)

Squash danusha2345's PR #1511 at d282f9e8 onto main 8c9c4761,
preserving its nine non-merge commits and main's existing Unreleased notes.
Calls in Kotlin, Java, TS/JS, Scala, Rust and Python declaration initializers
now retain the owner established by the upstream regression expectations.
Include the upstream CFML, dynamic-dispatch summary and viewer follow-ups.

Linux fail-to-pass validation (Node 22.19.0, rebuilt dist and native kernel):
- Before: TS load belonged to file:app.ts; Python/Kotlin/Scala/Rust calls
  vanished; Java lost the field-lambda, anonymous override and eager calls.
- After: all six languages PASS; 12 native/WASM LF/CRLF parity checks PASS.
- Focused initializer regressions: 10 passed with CODEGRAPH_KERNEL=0 and
  10 passed with the kernel enabled; Kotlin's grammar fallback is recorded.
- Related regression suites: 879 passed, 1 skipped across 15 test files.
- Evidence: /workspace/cg-1510-repro/before and /workspace/cg-1510-repro/after
  (combined test output: after/vitest.log).

Fixes #1510
Supersedes #1511

Co-authored-by: Colby McHenry <colbymchenry@users.noreply.github.com>
Co-authored-by: danusha2345 <ewidusoc498@gmail.com>

codegraph-kernel/src/rustlang.rs

@@ -667,6 +667,8 @@ impl<'t> Walker<'t> {
     /// and the initializer value is never body-walked.
     fn extract_variable(&mut self, node: Node<'t>) {
         let docstring = preceding_docstring(node, self.src);
+        let name_field = node.child_by_field_name("name");
+        let mut declared: Option<(u32, String)> = None;
         for i in 0..node.named_child_count() {
             let Some(child) = node.named_child(i) else { continue };
             if child.kind() != "identifier" {
@@ -674,7 +676,7 @@ impl<'t> Walker<'t> {
             }
             let name = self.text(child).to_string();
             if !name.is_empty() {
-                self.create_node(
+                let row = self.create_node(
                     "variable",
                     &name,
                     child,
@@ -684,6 +686,26 @@ impl<'t> Walker<'t> {
                         ..Extra::default()
                     },
                 );
+                if let (Some(row), Some(nf)) = (row, name_field) {
+                    if child.start_byte() == nf.start_byte() {
+                        declared = Some((row, name));
+                    }
+                }
+            }
+        }
+        // Walk the initializer ATTRIBUTED to the declared symbol (#693):
+        // `const N: usize = compute()` and
+        // `static REGISTRY: Lazy<T> = Lazy::new(|| build())` dropped every call
+        // inside the initializer, so a handler table or a lazily-built
+        // singleton linked to nothing.
+        if let Some(value) = node.child_by_field_name("value") {
+            match declared {
+                Some((row, name)) => {
+                    self.stack.push(Scope { row, kind: "variable", name });
+                    self.visit_function_body(value);
+                    self.stack.pop();
+                }
+                None => self.visit_function_body(value),
             }
         }
     }