fix(extraction): capture top-level initializer and inline-object-method calls (#465)

The variable / method-definition extractors never walked top-level
initializer values or inline-object method bodies, so calls like
`const token = getTokenMp()` and `methods: { save() { getTokenMp() } }`
showed up nowhere in `codegraph_callers`. The variable extractor now
walks any non-object initializer value; the method-definition extractor
still skips synthetic nodes for inline-object methods (noise rationale
unchanged) but now walks their bodies for calls. Surfaces in plain
`.ts`/`.js` files as well as Vue SFCs (`<script setup>` initializers +
Options API `methods: {...}` / `setup()`), which is where the bug was
originally reported.

Closes #425.

src/extraction/tree-sitter.ts

@@ -688,6 +688,11 @@ export class TreeSitterExtractor {
       // in inline objects). These are ephemeral and create noise (e.g., Svelte context
       // objects: `ctx.set({ get view() { ... } })`).
       if (node.parent?.type === 'object' || node.parent?.type === 'object_expression') {
+        const body = this.extractor.resolveBody?.(node, this.extractor.bodyField)
+          ?? getChildByField(node, this.extractor.bodyField);
+        if (body) {
+          this.visitFunctionBody(body, '');
+        }
         return;
       }
       // Not inside a class-like node and no receiver type, treat as function
@@ -1109,6 +1114,12 @@ export class TreeSitterExtractor {
               this.extractVariableTypeAnnotation(child, varNode.id);
             }
 
+            if (valueNode &&
+                valueNode.type !== 'object' &&
+                valueNode.type !== 'object_expression') {
+              this.visitFunctionBody(valueNode, '');
+            }
+
             // Exported const object-of-functions: `export const actions =
             // { default: async () => {} }` (SvelteKit form actions / handler maps
             // / route tables). Extract each function-valued property as a function