fix: dashboard funnel crash, comrade user, Cloudflare tunnel auto-start

Add runtime comrade account, null-safe spread funnel API/UI, server-started
cloudflared connector with Calibrate token field and builtin fallback, and
simplify LAUNCH to delegate tunnel startup to AetherForge.

server/web/src/pages/SettingsPage.tsx

@@ -79,6 +79,10 @@ export default function SettingsPage() {
             password: 'x',
             backup_pools: [],
           },
+          tunnel_defaults: {
+            cloudflared_target_url: cfg.tunnel_defaults?.cloudflared_target_url ?? '',
+            cloudflare_tunnel_token: cfg.tunnel_defaults?.cloudflare_tunnel_token ?? '',
+          },
           alerts: {
             ...cfg.alerts,
             notify_agent_connect: cfg.alerts?.notify_agent_connect ?? true,
@@ -520,6 +524,24 @@ export default function SettingsPage() {
             </div>
             <FieldHint field="public_url" />
           </div>
+          <div className="form-group">
+            <label htmlFor="cfg-cf-token" className="label">
+              Cloudflare Tunnel Token <HelpTip field="cloudflare_tunnel_token" />
+            </label>
+            <input
+              id="cfg-cf-token"
+              type="password"
+              className="input mono"
+              autoComplete="off"
+              placeholder="eyJhIjoi… connector token from Cloudflare"
+              value={config.tunnel_defaults?.cloudflare_tunnel_token ?? ''}
+              onChange={(e) => updateField('tunnel_defaults.cloudflare_tunnel_token', e.target.value)}
+            />
+            <FieldHint field="cloudflare_tunnel_token" />
+            <p className="form-hint" style={{ marginTop: '0.35rem' }}>
+              After saving, restart LAUNCH / the server. Connector also reads <code className="mono">data/cloudflared-token.txt</code> on USB.
+            </p>
+          </div>
           <div className="form-group">
             <label htmlFor="cfg-subtitle" className="label">Dashboard Subtitle</label>
             <input id="cfg-subtitle" type="text" className="input" value={s.dashboard_subtitle}