feat: add language backend configuration and update documentation

- Added `language_backend` option to project.yml for specifying the language backend (LSP or JetBrains).
- Updated CLAUDE.md with a note on downloading log files from the FTP server.
- Removed unnecessary .DS_Store files from autoload and templates directories.
- Deleted outdated log files from the logs directory.

.claude/settings.local.json

@@ -67,7 +67,10 @@
       "Bash(rm -rf \"C:/visual studio code/projekty/shopPRO/temp/temp_314\" && cd \"C:/visual studio code/projekty/shopPRO\" && powershell -ExecutionPolicy Bypass -File build-update.ps1 -FromTag v0.313 -ToTag v0.314 -ChangelogEntry \"FIX - naprawa globalnej wyszukiwarki admin \\(Content-Type, Cache-Control, POST, try/catch\\), NEW - title strony z numerem zamówienia\" 2>&1)",
       "mcp__serena__initial_instructions",
       "mcp__serena__list_memories",
-      "mcp__serena__find_referencing_symbols"
+      "mcp__serena__find_referencing_symbols",
+      "Bash(cd C:\\\\visual studio code\\\\projekty\\\\shopPRO:*)",
+      "Bash(cd \"/c/visual studio code/projekty/shopPRO\" && rm -rf temp/temp_317 && powershell -ExecutionPolicy Bypass -File build-update.ps1 -FromTag v0.316 -ToTag v0.317 -ChangelogEntry \"FIX - klucz API: fix zapisu \\(brakowalo w whiteliście\\), przycisk Generuj losowy klucz, ulepszony routing API\" 2>&1)",
+      "Bash(./test.ps1)"
     ]
   }
 }