diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index 2b00c70..60ca054 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -2,24 +2,33 @@
   "version": "2.0.0",
   "tasks": [
     {
-      "label": "Update Dependencies",
+      "label": "start-agents",
       "type": "shell",
-      "command": "act workflow_dispatch -W .github/workflows/update_dependencies.yaml --secret GITHUB_TOKEN=$(gh auth token)",
+      // Open the tmux session (orchestrator / implementer / codex) as soon as the
+      // folder opens. VS Code has no per-task property for terminal location, so the
+      // editor-area placement comes from "terminal.integrated.defaultLocation" in
+      // settings.json (microsoft/vscode#212070).
+      //
+      // Guarded because this file is copied into every project: repositories without
+      // .devcontainer/start-agents.sh must not get a failing task on open.
+      "command": "[ -x .devcontainer/start-agents.sh ] && exec .devcontainer/start-agents.sh || true",
       "options": {
         "cwd": "${workspaceFolder}"
       },
-      "problemMatcher": [],
-      "group": "test"
-    },
-    {
-      "label": "Update Dependencies (Dry Run)",
-      "type": "shell",
-      "command": "act workflow_dispatch -W .github/workflows/update_dependencies.yaml --secret GITHUB_TOKEN=$(gh auth token) -n",
-      "options": {
-        "cwd": "${workspaceFolder}"
+      "runOptions": {
+        "runOn": "folderOpen"
+      },
+      "presentation": {
+        "reveal": "always",
+        "panel": "dedicated",
+        // This terminal owns tmux: never auto-close it, and do not echo the command.
+        "echo": false,
+        "close": false,
+        "clear": true,
+        // Show it without stealing focus from the editor.
+        "focus": false
       },
-      "problemMatcher": [],
-      "group": "test"
+      "problemMatcher": []
     }
   ]
 }