build: configure multi-entry Vite build for reader

- Add reader.ts as second entry point alongside main.ts in vite.config.ts
- Set assetsDir to empty string to output chunks to /static/ root
- Remove reader-shell import from main.ts (loaded separately via reader.js)
- Update .gitignore to exclude web/static/assets/*.js chunks
- Update Bruno environment with new test IDs

vite.config.ts

@@ -3,13 +3,14 @@ export default defineConfig({
   build: {
     outDir: "web/static",
     emptyOutDir: false,
+    assetsDir: "",
     rollupOptions: {
-      input: "web/src/main.ts",
+      input: {
+        main: "web/src/main.ts",
+        reader: "web/src/reader/reader.ts",
+      },
       output: {
-        entryFileNames: "main.js",
-        manualChunks: () => {
-          return "everything";
-        },
+        entryFileNames: "[name].js",
       },
     },
     target: "es2020",