chore(deps): update CodeMirror and Csound browser

[hlolli]

Summary

• Update CodeMirror 6 and the CodeMirror packages used by the editor.
• Update @hlolli/codemirror-lang-csound to 1.0.0-alpha11.
• Update @csound/browser to 7.0.0-beta32, the newest forward prerelease.
• Declare direct CodeMirror and Lezer imports as runtime dependencies.
• Update block evaluation for the language plugin's new syntax-tree node names.
• Remove the old ambient language-plugin declaration so TypeScript uses the package's own types.
• Add tests for instruments, UDOs, top-level orchestra code, score lines, and CSD instruments.

Why

The new Csound language plugin uses one parser and changes its syntax-tree node names. Without the compatibility update, block evaluation inside instruments and UDOs would fall back to one line.

Checks

• npm run typecheck
• npm run lint
• npm run format:check
• npm run test:ci — 12 tests passed
• npm run build
• Puppeteer test lint and format checks from the pre-commit hook

[Copilot]

Pull request overview

Updates the editor’s CodeMirror/Csound dependencies and adapts block-evaluation logic to the updated Csound language plugin parser (new syntax-tree node names), with new tests to validate context selection across ORC/SCO/CSD inputs.

Changes:

• Bump @csound/browser and @hlolli/codemirror-lang-csound, and promote CodeMirror/Lezer packages to direct runtime dependencies.
• Update block-evaluation context detection to use the language plugin’s new syntax node names and return types.
• Add Vitest coverage for selecting instruments, UDOs, top-level ORC statements, SCO lines, and CSD instruments; remove the old ambient module declaration.

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/global.d.ts	Removes the ambient module declaration for the Csound CodeMirror language package.
src/components/editor/utils.ts	Updates block context discovery for new syntax-tree node names and tweaks evaluation selection/context handling.
src/components/editor/utils.test.ts	Adds tests for findSurroundingContext across ORC/SCO/CSD sources.
package.json	Updates dependency versions and declares CodeMirror/Lezer packages as runtime dependencies.
package-lock.json	Locks updated dependency tree for the CodeMirror/Csound upgrades.

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