fix: normalize file paths embedded in virtual modules for Windows compatibility (#95)

Use Vite's normalizePath() to convert backslashes to forward slashes
in resolved paths before embedding them in generated virtual module code.

Closes #93

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: uhyo

packages/static/src/plugin/index.ts

@@ -1,5 +1,5 @@
 import path from "node:path";
-import type { Plugin } from "vite";
+import { normalizePath, type Plugin } from "vite";
 import rsc from "@vitejs/plugin-rsc";
 import { buildApp } from "../build/buildApp";
 import { serverPlugin } from "./server";
@@ -129,20 +129,28 @@ export default function funstackStatic(
       name: "@funstack/static:config",
       configResolved(config) {
         if (isMultiEntry) {
-          resolvedEntriesModule = path.resolve(config.root, options.entries);
+          resolvedEntriesModule = normalizePath(
+            path.resolve(config.root, options.entries),
+          );
         } else {
           // For single-entry, we store both resolved paths to generate a
           // synthetic entries module in the virtual module loader.
-          const resolvedRoot = path.resolve(config.root, options.root);
-          const resolvedApp = path.resolve(config.root, options.app);
+          const resolvedRoot = normalizePath(
+            path.resolve(config.root, options.root),
+          );
+          const resolvedApp = normalizePath(
+            path.resolve(config.root, options.app),
+          );
           // Encode as JSON for safe embedding in generated code
           resolvedEntriesModule = JSON.stringify({
             root: resolvedRoot,
             app: resolvedApp,
           });
         }
         if (clientInit) {
-          resolvedClientInitEntry = path.resolve(config.root, clientInit);
+          resolvedClientInitEntry = normalizePath(
+            path.resolve(config.root, clientInit),
+          );
         }
       },
       configEnvironment(_name, config) {