[rhyots]

Adds Markdown with Mermaid 1.4.1 for x64 and x86. The plugin provides live Markdown preview, offline Mermaid diagrams, synchronized scrolling, formatted copy, and HTML/PDF/DOCX export.

• Minimum Notepad++ version: 8.4.1 ([8.4.1,]).
• Microsoft Edge WebView2 Runtime is required and stated in the catalog description.
• Both entries use the stable v1.4.1 release, with architecture-specific ZIP URLs and SHA-256 values. Each ZIP contains Markdown_with_Mermaid.dll at its root and the matching WebView2Loader.

Validation:

• Both complete modified catalogs passed the upstream pl.schema and uniqueness checks.
• The unchanged upstream validator.py passed for each submitted entry, downloading the public archive and checking its SHA-256, root DLL name and Windows version 1.4.1.0. These targeted runs did not download unrelated plugins.
• Additional checks passed for ZIP CRC/content and plugin/loader PE architecture.
• Both 1.4.1 packaged DLLs passed 26 native startup/API/runtime checks each in real Notepad++ 8.4.1, including Preview payload creation, WebView2 connection and clean shutdown.
• The accepted RC2 runtime baseline passed x64/x86 functional testing and a local Plugins Admin install/update/remove/reinstall cycle. Version 1.4.1 retains that runtime implementation; the version resources and documentation changed. Testing details.

Only src/pl.x64.json and src/pl.x86.json are changed; existing records and catalog versions are preserved.