chore: Improvements to codespaces (#11635)

- Remove the deprecated extensions
- Install claude code in base image 
- Fix rails deprecation warning

.devcontainer/scripts/setup.sh

@@ -4,5 +4,13 @@ sed -i -e '/POSTGRES_HOST/ s/=.*/=localhost/' .env
 sed -i -e '/SMTP_ADDRESS/ s/=.*/=localhost/' .env
 sed -i -e "/FRONTEND_URL/ s/=.*/=https:\/\/$CODESPACE_NAME-3000.app.github.dev/" .env
 
+# Setup Claude Code API key if available
+if [ -n "$CLAUDE_CODE_API_KEY" ]; then
+  mkdir -p ~/.claude
+  echo '{"apiKeyHelper": "~/.claude/anthropic_key.sh"}' > ~/.claude/settings.json
+  echo "echo \"$CLAUDE_CODE_API_KEY\"" > ~/.claude/anthropic_key.sh
+  chmod +x ~/.claude/anthropic_key.sh
+fi
+
 # codespaces make the ports public
 gh codespace ports visibility 3000:public 3036:public 8025:public -c $CODESPACE_NAME