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

config/dot/quickshell/config/PreferenceSchema.qml

@@ -184,7 +184,8 @@ Singleton {
             options: [
                 { value: "none", label: "None" },
                 { value: "claude", label: "Claude Code" },
-                { value: "codex", label: "Codex" }
+                { value: "codex", label: "Codex" },
+                { value: "t3", label: "T3 Code" }
             ]
         },
         {
@@ -205,7 +206,7 @@ Singleton {
         {
             key: "agentAutoApprove", type: "bool", def: true, group: "agents",
             label: "Launched agents approve their own tools",
-            detail: "Investigations run without permission prompts. The diagnose skill still holds agents to reading rather than fixing, and root still goes through panama-sudo, reason and all"
+            detail: "Investigations run without permission prompts. T3 Code threads use the mode set on the Panama project in T3 instead. The diagnose skill still holds agents to reading rather than fixing, and root still goes through panama-sudo, reason and all"
         },
         {
             key: "agentUsageClaude", type: "bool", def: true, group: "agents",