fix(ui): site-status modal API, honest agent version fallback, Directory default org name

Fresh-install bug report fixes:

- 'Master Site' button error 'app.modal.show is not a function': the
  multi-site status modal used the legacy app.modal.show() signature; the app
  exposes app.modal.open({title, bodyHtml, size}). The site-status request
  itself worked -- only the rendering call was wrong.
- Agents with no discovery yet showed a fake 'v2.0.0' (three hardcoded
  fallbacks). Now 'unknown', so a host whose agent never connected isn't
  presented as an old version.
- The default org name (browser tab title) is set by theta-suite's setup.sh;
  that default is fixed separately there (CFG_ORG -> Theta Directory).

nodejs/drivers/theta_agent_driver.js

@@ -42,7 +42,7 @@ class ThetaAgentDriver extends BaseDriver {
       status: 'online',
       driver: this.name,
       agentId: agent.id,
-      agentVersion: agent.version || (telemetry && telemetry.version) || 'v2.0.0',
+      agentVersion: agent.version || (telemetry && telemetry.version) || 'unknown',
       lastSeen: agent.lastSeen,
       system: {
         cpu: telemetry.cpu || null,

nodejs/models/agent.js

@@ -100,7 +100,7 @@ class Agent extends Model {
 		delete data.tokenHash;
 		return {
 			...data,
-			version: data.version || (data.lastDiscovery && data.lastDiscovery.version) || (data.lastTelemetry && data.lastTelemetry.version) || 'v2.0.0',
+			version: data.version || (data.lastDiscovery && data.lastDiscovery.version) || (data.lastTelemetry && data.lastTelemetry.version) || 'unknown',
 			lastSeen: data.last_seen ? new Date(data.last_seen * 1000).toISOString() : null,
 			connected: !!(liveState && liveState.connected),
 			// "Online" is a live-connection fact, not a stored one. A row with a

nodejs/utils/agent_manager.js

@@ -118,7 +118,7 @@ class AgentManager {
 
   async handleDiscovery(agent, payload) {
     const discovery = {
-      version: payload.version || payload.agent_version || 'v2.0.0',
+      version: payload.version || payload.agent_version || 'unknown',
       hostname: payload.hostname || '',
       ip_addresses: Array.isArray(payload.ip_addresses) ? payload.ip_addresses : [],
       public_ip: payload.public_ip || '',

nodejs/views/directory.ejs

@@ -3360,7 +3360,7 @@
 
       html += '</div>';
 
-      app.modal.show('Multi-Site & Network Gateway Status', html, [], 'modal-lg');
+      app.modal.open({ title: 'Multi-Site & Network Gateway Status', bodyHtml: html, size: 'lg' });
     } catch (e) {
       app.messages.toast('Error fetching site status: ' + e.message, 'danger');
     }