v1.0.8

Fixes Cloudflare API Token cache purge auth and zero-parameter ability input validation.\n\nChanges:\n- Match the official Cloudflare plugin credential handling for API Token vs Global API Key auth.\n- Retry cache purge with alternate auth when Cloudflare returns an authentication error.\n- Accept empty/null representations produced by MCP/WordPress paths for no-parameter abilities.\n- Add regression coverage for token auth, auth fallback, object payload normalization, and no-parameter ability schemas.\n\nValidation: local PHP/regression tests passed, WordPress Plugin Check passed with 0 errors and 0 warnings, staged/public/release artifacts verified by SHA256, and functionality was tested across multiple Devenia-controlled WordPress environments.