Function flutterBuildEdges

src/resolution/callback-synthesizer.ts:456–486

* Phase 4b: Flutter setState → build (the Dart analog of react-render). In a * StatefulWidget's State class, `setState(() {…})` re-runs `build(context)`, but * that hop is framework-internal (Flutter calls build), so a flow like * "onPressed → _increment → setState → rebuilt UI" dead-ends at setS

(queries: QueryBuilder, ctx: ResolutionContext, onYield: MaybeYield)

 * Flutter State classes. Over-approximation accepted (reachability-correct).
 */
async function flutterBuildEdges(queries: QueryBuilder, ctx: ResolutionContext, onYield: MaybeYield): Promise<Edge[]> {
  let scanned255 = 0;
  const edges: Edge[] = [];
  const seen = new Set<string>();
  for (const cls of queries.iterateNodesByKind('class')) {
    if ((++scanned255 & 63) === 0) await onYield();
    const children = queries.getOutgoingEdges(cls.id, ['contains'])
      .map((e) => queries.getNodeById(e.target))
      .filter((n): n is Node => !!n && n.kind === 'method');
    const build = children.find((n) => n.name === 'build');
    if (!build || !build.filePath.endsWith('.dart')) continue;
    let added = 0;
    for (const m of children) {
      if (added >= MAX_CALLBACKS_PER_CHANNEL) break;
      if (m.id === build.id) continue;
      const content = ctx.readFile(m.filePath);
      const src = content && sliceLines(content, m.startLine, m.endLine);
      if (!src || !FLUTTER_SETSTATE_RE.test(src)) continue;
      const key = `${m.id}>${build.id}`;
      if (seen.has(key)) continue;
      seen.add(key);
      edges.push({
        source: m.id, target: build.id, kind: 'calls', line: m.startLine,
        provenance: 'heuristic',
        metadata: { synthesizedBy: 'flutter-build', via: 'setState', registeredAt: `${build.filePath}:${build.startLine}` },
      });
      added++;
    }
  }
  return edges;
}

/**
 * Reactive ArkUI property decorators: assigning a property carrying one of