chore(automation): drop unused bridge accessors (aethersdr-agent review)

isAutomationBridgeRunning() and automationBridgeEndpoint() were defined
but unused. The MCP server auto-discovers the socket via the discovery
file, so a UI endpoint display isn't needed — remove the dead API rather
than wire a nicety. The empty-except in aether_mcp.py flagged by Copilot /
aethersdr-agent already carries an explanatory comment (647bfb2).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: ten9876

src/gui/MainWindow.h

@@ -222,17 +222,13 @@ class MainWindow : public QMainWindow {
     // bridge is listening afterwards.
     bool startAutomationBridge(const QString& sockName = QString());
     void stopAutomationBridge();
-    bool isAutomationBridgeRunning() const;
     // Persist a new shared-secret token and push it to the running bridge
     // (the Radio Setup → Network rotate button). Old tokens stop working
     // immediately.
     void setAutomationBridgeToken(const QString& token);
     // Persist the TX-via-MCP opt-in and push it live (Radio Setup → Network).
     // Enabling arms the force-unkey watchdog; disabling force-unkeys the radio.
     void setAutomationTxAllowed(bool allowed);
-    // Resolved socket path / pipe name, or empty when stopped — shown in
-    // the Network toggle so the operator can point their MCP client at it.
-    QString automationBridgeEndpoint() const;
 
 protected:
     void showEvent(QShowEvent* event) override;

src/gui/MainWindow_Session.cpp

@@ -1718,16 +1718,6 @@ void MainWindow::stopAutomationBridge()
     }
 }
 
-bool MainWindow::isAutomationBridgeRunning() const
-{
-    return m_automation && m_automation->isRunning();
-}
-
-QString MainWindow::automationBridgeEndpoint() const
-{
-    return m_automation ? m_automation->fullServerName() : QString();
-}
-
 void MainWindow::setAutomationBridgeToken(const QString& token)
 {
     // Persist to the OS secret store (survives restart; read by