xavier loop: iteration 1 — preserve JSX in @solidjs/image build output

Configure tsdown to output preserved JSX via Rolldown's jsx: "preserve"
option. Update package.json exports to use solid/default conditions
pointing to dist/index.jsx. Add CSS copy step to build script.

Co-authored-by: Isaac

Author: atilafassina

packages/image/package.json

@@ -4,7 +4,7 @@
   "type": "module",
   "types": "./env.d.ts",
   "scripts": {
-    "build": "tsdown",
+    "build": "tsdown && cp src/styles.css dist/styles.css",
     "dev": "tsdown --watch",
     "typecheck": "tsc --noEmit -p tsconfig.build.json",
     "typecheck:dist": "pnpm build && pnpx @arethetypeswrong/cli --pack . --profile esm-only"
@@ -16,14 +16,20 @@
     "README.md"
   ],
   "exports": {
-    ".": "./dist/index.js",
+    ".": {
+      "solid": "./dist/index.jsx",
+      "default": "./dist/index.jsx"
+    },
     "./vite": "./dist/vite.js",
     "./env": "./env.d.ts"
   },
   "publishConfig": {
     "access": "public",
     "exports": {
-      ".": "./dist/index.js",
+      ".": {
+        "solid": "./dist/index.jsx",
+        "default": "./dist/index.jsx"
+      },
       "./vite": "./dist/vite.js",
       "./env": "./env.d.ts"
     }

packages/image/tsdown.config.ts

@@ -10,10 +10,11 @@ export default defineConfig([
     tsconfig: "tsconfig.build.json",
     clean: true,
     platform: "browser",
+    inputOptions: { jsx: "preserve" },
     outExtensions: () => ({
-      js: ".js",
+      js: ".jsx",
     }),
-    external: ["solid-js", "vite", "sharp"],
+    external: ["solid-js", "vite", "sharp", "*.css"],
   },
   {
     entry: {