[hlolli]

Updates the Csound packages together:

• @csound/browser: 7.0.0-beta39 → 7.0.0-beta41
• @csound/plugins: 7.0.0-beta.0 → 7.0.0-beta.1
• @csound/wasm-bin: 7.0.0-beta29 → 7.0.0-beta31

Regenerates the plugin catalog and uses the new shared-memory C/C++ examples in tests. Browser beta41 requires shared-memory plugins, so the Nix build now gives our metadata reader and type fixture the required memory and TLS exports. A retained one-byte TLS slot avoids beta41 rejecting the zero alignment LLVM emits for plugins with no TLS data. Plugin-defined objects and structs still reach diagnostics, completion, and synopsis.

Existing uploaded plugins built with the older, non-shared SDK need rebuilding with the shared-memory SDK.

Validation:

• Clean npm ci, lint, types, formatting, and plugin catalog checks pass.
• Nix builds the checker, metadata plugins, and FTGEN tool locally.
• Full Vitest suite: 1,415 passed, 3 skipped.
• Browser tests cover plugin playback and rendering, shared audio and fallback, I/O settings, score preprocessing, audio tools, plugin metadata, editor diagnostics, and FTGEN previews.
• Full production build passes and includes the rebuilt WASM helpers.