1. Settings panel: wire TokensTab into "API Tokens" tab (was imported
but not rendered). Rename "API Keys" → "Secrets", add "API Tokens"
tab. Fix docs link → doc.moleculesai.app/docs/tokens.
2. Referer match hardening: require exact host match or trailing slash
to prevent evil.com subdomain bypass. Cache CANVAS_PROXY_URL at
init time instead of per-request os.Getenv.
3. Extract shared deriveWsBaseUrl() to lib/ws-url.ts — eliminates
duplicate 12-line derivation in socket.ts and TerminalTab.tsx.
4. Token list pagination: add ?limit= and ?offset= params (default
50, max 200) to GET /workspaces/:id/tokens.
507/507 canvas tests pass, Go build + vet clean.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>