The page's script is TypeScript in web/src, built and minified with swc

- web/src/*.ts: the script that was inline in index.html and login.html, split along its
  existing sections. Still one scope, concatenated in order, not modules.
- web/build.mjs strips the types, puts the script in the page and minifies it with swc;
  build.rs runs it into OUT_DIR and web.rs include_str!s the result. 137 KB -> 106 KB.
- npx tsc -p . type-checks web/src, loosely; the handful of annotations it needed
  change no behaviour.
- The Docker build installs node and swc (npm ci --omit=dev).
- Two list requests racing no longer let the older one win, and switching tabs clears
  the selection it closes, which made a browser test flaky.

Closes #23, #24.

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

package.json

@@ -1,13 +1,20 @@
 {
-  "name": "ipx-ui-tests",
+  "name": "ipx-web",
   "private": true,
-  "description": "Browser tests for the ipx web UI. The Rust tests cover the server; these cover the page.",
+  "description": "Builds the ipx web pages from web/src (web/build.mjs, run by build.rs) and tests them. The Rust tests cover the server.",
   "scripts": {
+    "build": "node web/build.mjs",
+    "typecheck": "tsc -p .",
+    "smoke": "node tests/page-smoke.js",
     "test": "playwright test",
-    "test:headed": "playwright test --headed",
-    "smoke": "node tests/page-smoke.js"
+    "test:headed": "playwright test --headed"
   },
   "devDependencies": {
-    "@playwright/test": "^1.56.0"
+    "@playwright/test": "^1.56.0",
+    "typescript": "^7.0.2"
+  },
+  "dependencies": {
+    "@swc/core": "^1.16.2",
+    "@swc/html": "^1.16.2"
   }
 }