fix(bankai): survive real-world CSS and serve real media types

Lightning CSS refuses IE-era hacks (*zoom and friends) that established
libraries like tachyons still carry; enable errorRecovery so bankai
strips them instead of failing the build — a zero-config tool ingesting
decade-old CSS should shrug, not crash. Found migrating an actual choo
v7 production site. Also: proper MIME types for avif/jpg/gif/mp4/woff in
the static server.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014NgfSjHE11oFpoSnLVKLXd

packages/bankai/lib/build.js

@@ -32,6 +32,9 @@ export default async function buildApp ({ entry, outDir = 'dist', title = 'choo'
     appType: 'custom',
     plugins: [bankaiPlugin(entry, { css })],
     logLevel: 'warn',
+    // real-world stylesheets (tachyons et al) carry IE-era hacks like
+    // *zoom; strip them instead of refusing to build
+    css: { lightningcss: { errorRecovery: true } },
     build: {
       outDir,
       emptyOutDir: true,

packages/bankai/lib/dev.js

@@ -16,6 +16,7 @@ export default async function dev ({ entry, port = 8080, title = 'choo' }) {
     appType: 'custom',
     server: { middlewareMode: true },
     plugins: [bankaiPlugin(entry, { css })],
+    css: { lightningcss: { errorRecovery: true } },
     logLevel: 'warn'
   })
 

packages/bankai/lib/serve.js

@@ -31,8 +31,14 @@ const MIME = {
   '.map': 'application/json',
   '.txt': 'text/plain; charset=utf-8',
   '.woff2': 'font/woff2',
+  '.woff': 'font/woff',
   '.png': 'image/png',
+  '.jpg': 'image/jpeg',
+  '.jpeg': 'image/jpeg',
+  '.gif': 'image/gif',
   '.webp': 'image/webp',
+  '.avif': 'image/avif',
+  '.mp4': 'video/mp4',
   '.ico': 'image/x-icon'
 }