Auto-create .sync_connection via printf command in bootstrap

Replace 'Save this to .sync_connection' prose with actual printf command
that Claude/user executes. Fix heredoc indentation in bootstrap.yaml.

docs/setup/bootstrap.yaml

@@ -137,11 +137,7 @@ setup:
         mkdir -p ./user/duckdb ./user/notifications ./user/artifacts ./user/scripts ./user/parquet ./user/sessions
 
         # Save connection details for sync_data.sh to use when generating CLAUDE.md
-        cat > ./.sync_connection << 'CONN'
-        ssh_alias={ssh_alias}
-        server_host={server_host}
-        webapp_url={webapp_url}
-        CONN
+        printf "ssh_alias={ssh_alias}\nserver_host={server_host}\nwebapp_url={webapp_url}\n" > ./.sync_connection
       message: |
         Project structure created (server/, user/).
 

webapp/templates/dashboard.html

@@ -2447,13 +2447,10 @@
             + '       IdentityFile ' + sshKey + '\n'
             + '       StrictHostKeyChecking accept-new\n'
             + '   Then test: ssh ' + sshAlias + ' echo ok\n\n'
-            + '2. Create project folders and save connection details:\n'
+            + '2. Create project folders:\n'
             + '   mkdir -p server/docs server/scripts server/parquet server/metadata server/examples\n'
             + '   mkdir -p user/duckdb user/notifications user/artifacts user/scripts user/parquet user/sessions\n'
-            + '   Save this to .sync_connection (used by sync script to generate CLAUDE.md):\n'
-            + '     ssh_alias=' + sshAlias + '\n'
-            + '     server_host=' + serverHost + '\n'
-            + '     webapp_url=' + webappUrl + '\n\n'
+            + '   printf "ssh_alias=' + sshAlias + '\\nserver_host=' + serverHost + '\\nwebapp_url=' + webappUrl + '\\n" > .sync_connection\n\n'
             + '3. Download from server via rsync (use --no-perms --no-group to avoid macOS permission errors).\n'
             + '   Skip directories that don\'t exist on the server (rsync exit code 23 = missing source).\n'
             + '   rsync -avz --no-perms --no-group ' + sshAlias + ':server/scripts/ ./server/scripts/\n'