fix(canvas): align flow reconciliation hook with task plan

Rename the hook test to the planned path, revert the persistent Vitest config tweak, and narrow the hook inputs to reconciliation data plus shared refs. Keep verification working with a temporary test config instead of expanding the repo-level include list.

vitest.config.ts

@@ -12,7 +12,6 @@ export default defineConfig({
     include: [
       "tests/**/*.test.ts",
       "components/canvas/__tests__/canvas-flow-reconciliation-helpers.test.ts",
-      "components/canvas/__tests__/use-canvas-flow-reconciliation.test.tsx",
       "components/canvas/__tests__/use-canvas-sync-engine.test.ts",
       "components/canvas/__tests__/use-canvas-sync-engine-hook.test.tsx",
     ],