Restore Codespace sidebar/extensions and keep chat panel disabled

.devcontainer/devcontainer.json

@@ -16,7 +16,7 @@
       "settings": {
         "files.autoSave": "afterDelay",
         "workbench.statusBar.visible": false,
-        "workbench.sideBar.visible": false,
+        "workbench.sideBar.visible": true,
         "workbench.panel.defaultLocation": "bottom",
         "workbench.editor.showTabs": "none",
         "breadcrumbs.enabled": false,
@@ -27,9 +27,9 @@
           "*": false
         },
         "github.copilot.editor.enableAutoCompletions": false,
-        "workbench.activityBar.location": "hidden",
-        "workbench.activityBar.visible": false,
-        "workbench.explorer.enabled": false,
+        "workbench.activityBar.location": "default",
+        "workbench.activityBar.visible": true,
+        "workbench.explorer.enabled": true,
         "github.copilot-chat.enable": false,
         "chat.disableAIFeatures": true,
         "chat.editor.show": false,

.devcontainer/postCreate.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-# Match the terminal-in-editor experience used in the reference exercise.
-code --command workbench.action.createTerminalEditor >/dev/null 2>&1 || true
+echo "Configuring terminal to open in the editor area..."
 
-echo "Terminal is configured to open in the editor area."
+# Keep terminal launch as the final startup action.
+code --command workbench.action.createTerminalEditor >/dev/null 2>&1 || true

.gitignore

@@ -47,3 +47,6 @@ package-lock.json
 .eslintcache
 dist/
 build/
+
+# Impeccable local cache
+.impeccable/hook.cache.json