feat(islands): wire islands end to end

The island pieces existed but nothing connected .wrn compilation to island
emission. Now:

- codegen emits a data-wrn-island placeholder for component tags bound to
  .tsx imports, keeping .wrn components on the normal mount path
- the dev pipeline and static build resolve island imports, thread the
  names into codegen, and build the bundles
- collectScripts adds /__wrnexus/islands.js only when island markup is
  present, so island-free pages still ship nothing
- island routes classify as static-interactive via hasIslands

Three bugs found by driving a real page in the browser:

1. The mount runtime was never built anywhere, so the bootstrap 404'd and
   no island mounted.
2. Building the runtime separately from the islands gave each its own copy
   of React: "Cannot read properties of null (reading 'useState')". The
   runtime is now an entrypoint of the same build so React stays in one
   shared chunk. The existing single-React test only compared bundles
   within one build and could not see across build boundaries.
3. Island props arrived as attribute strings, so start={3} was "3" and
   incrementing produced "31" then "311". Props now follow JSX semantics:
   {…} parses as JSON, quoted values stay strings, and a runtime
   expression is a WRN-ISLAND-PROPS build error rather than a silent
   wrong value.

island-codegen.ts no longer imports @wrnexus/core. Compiler modules are
bundled into the Node-only VS Code extension, which contains no other
packages, so a runtime import of core broke the editor compiler; the two
helpers are implemented locally and the core dependency is dropped again.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

packages/cli/test/create.test.ts

@@ -147,7 +147,7 @@ test("scaffoldApp uses compatible framework packages and pins the current CLI",
     }
     expect(pkg.devDependencies["@wrnexus/cli"]).toBe(version);
     expect(pkg.devDependencies["@iconify/tailwind4"]).toBe("^1.2.3");
-    expect(pkg.devDependencies["@iconify-json/lucide"]).toBe("^1.2.118");
+    expect(pkg.devDependencies["@iconify-json/lucide"]).toBe("^1.2.123");
     const globalCss = readFileSync(join(root, "app", "styles", "global.css"), "utf8");
     expect(globalCss).toContain('@plugin "@iconify/tailwind4";');
     expect(globalCss).toContain('"Plus Jakarta Sans"');

packages/cli/test/plugin-runtime-production.test.ts

@@ -69,7 +69,9 @@ export default {
     }
 
     if (port === undefined) {
-      throw new Error(`production server failed to start: ${await new Response(proc.stderr).text()}`);
+      throw new Error(
+        `production server failed to start: ${await new Response(proc.stderr).text()}`,
+      );
     }
 
     const page = await fetch(`http://127.0.0.1:${port}/`);

packages/cli/test/workspace.test.ts

@@ -3,6 +3,7 @@ import { existsSync, mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { currentCliVersion } from "../src/update-notifier.ts";
+import { scaffoldFrameworkRange } from "../src/create.ts";
 import {
   addWorkspaceApp,
   insertWorkspaceApp,
@@ -36,14 +37,14 @@ test("workspace environments preserve runtime and HMR policy", () => {
   expect(resolved.apps[0]?.publicOrigin).toBe("https://www.staging.example.com");
 });
 
-test("workspace templates pin the running framework release", () => {
+test("workspace templates pin the CLI and use compatible independent package ranges", () => {
   const files = workspaceFiles("acme");
   const rootPackage = JSON.parse(files["package.json"]!);
   const sharedPackage = JSON.parse(files["packages/shared/package.json"]!);
   const version = currentCliVersion();
 
   expect(rootPackage.devDependencies["@wrnexus/cli"]).toBe(version);
-  expect(sharedPackage.dependencies["@wrnexus/pubsub"]).toBe(version);
+  expect(sharedPackage.dependencies["@wrnexus/pubsub"]).toBe(scaffoldFrameworkRange);
   expect(files["README.md"]).toContain("http://127.0.0.1:3000");
   expect(files["README.md"]).toContain("internal gateway targets");
   expect(JSON.parse(files["package.json"]!).scripts.production).toBe("wrnexus production");