fix: resolve JavaScript syntax error in dimension parsing logic

[BaiyuScope3]

Fix Testing UI and Security Updates

Summary

This PR fixes a JavaScript error in the testing UI and addresses a high-severity security vulnerability.

Changes

🐛 Bug Fix: Testing UI JavaScript Error

Fixed a syntax error in src/public/index.html that prevented the testing page from loading correctly:

Uncaught SyntaxError: Unexpected token 'else'
Uncaught ReferenceError: toggleAddAgent is not defined

Cause: Invalid } else { ... } else if { ... } structure in the format dimension parsing logic.

Fix: Restructured to proper nested conditionals:

if (format.dimensions) { ... }
else {
  if (dimensionAsset) { ... }
  else if (format.format_id.includes('x')) { ... }
}

🔒 Security: Update hono to 4.11.4

Updated hono from 4.11.3 to 4.11.4 to address high-severity vulnerabilities:
GHSA-3vhc-576x-3qv4 - JWK Auth Middleware JWT algorithm confusion
GHSA-f67f-6cw9-8mq4 - JWT Middleware algorithm confusion via unsafe HS256 default

🔄 Chore: Regenerate Types

Regenerated TypeScript types to sync with v2.6 schemas.

Testing

[x] Local server starts without errors
[x] Testing UI loads correctly
[x] No JavaScript console errors
[x] npm audit shows 0 vulnerabilities