fix: use cross-platform cache directory#7
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The default cache_dir='.cache' resolved relative to CWD via Path.resolve(). When launched by MCP clients (Claude Desktop, Cursor, etc.), CWD is '/' which is read-only on macOS, causing: OSError: [Errno 30] Read-only file system: '/.cache' Now uses proper platform-specific cache directories: - macOS/Linux: $XDG_CACHE_HOME/scopus-mcp (default ~/.cache/scopus-mcp) - Windows: %LOCALAPPDATA%/scopus-mcp Fixes #OOM on macOS when used with Claude Desktop and other MCP clients.
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Problem
The default cache_dir='.cache' resolves relative to CWD via Path.resolve(). When launched by MCP clients (Claude Desktop, Cursor, Trae), CWD is '/' which is read-only on macOS, causing:
OSError: [Errno 30] Read-only file system: '/.cache'
Fix
Use proper platform-specific cache directories:
Backwards compatible: explicit cache_dir arguments still work as before.