Offer T3 Code as the preferred agent, opening a thread in the Panama project, and install it with the desktop

config/dot/quickshell/modules/settings/AgentsPage.qml

@@ -37,8 +37,8 @@ SettingsPage {
     // them not to believe the page.
     //
     // Probed through a LOGIN shell rather than this one. Quickshell is started
-    // by systemd, whose PATH does not include ~/.local/bin -- where both of
-    // these usually land -- and a login shell is the environment the launcher
+    // by systemd, whose PATH does not include ~/.local/bin -- where all three of
+    // these usually land (T3 Code's CLI is `t3`) -- and a login shell is the environment the launcher
     // hands the agent when it spawns a terminal. Asking with the shell's own
     // PATH would report "not installed" for an agent that starts perfectly.
     property var installed: ({})
@@ -60,7 +60,7 @@ SettingsPage {
 
         running: true
         command: ["bash", "-lc",
-            "for agent in claude codex; do command -v \"$agent\" >/dev/null 2>&1 && printf '%s\\n' \"$agent\"; done"]
+            "for agent in claude codex t3; do command -v \"$agent\" >/dev/null 2>&1 && printf '%s\\n' \"$agent\"; done"]
         stdout: StdioCollector {
             onStreamFinished: root.absorbProbe(this.text)
         }
@@ -70,6 +70,7 @@ SettingsPage {
         switch (value) {
         case "claude": return "starred-symbolic";
         case "codex": return "utilities-terminal-symbolic";
+        case "t3": return "view-dual-symbolic";
         default: return "notifications-disabled-symbolic";
         }
     }