feat: add @wterm/svelte package

[maxffarrell]

Summary

• Adds the @wterm/svelte package — a Svelte 5 component wrapping @wterm/dom
• Introduces a core prop so callers can supply a pre-constructed TerminalCore (e.g. from @wterm/ghostty) instead of relying on the default WASM binary / wasmUrl
• Props are fully reactive: cols, rows, and cursorBlink sync to the underlying WTerm instance on change
• All standard div attributes (class, style, id, ARIA props) are forwarded to the root element
• Adds TerminalHarness.svelte test helper and Vitest tests covering prop reactivity, the core option, and type-level assertions
• Updates README and docs to document core as a supported prop

Test plan

• pnpm test passes in packages/@wterm/svelte
• Type-check passes (pnpm typecheck / svelte-check)
• Docs page at /svelte renders correctly and lists all props
• Verify core prop works end-to-end with @wterm/ghostty binary

🤖 Generated with Claude Code

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​@​sveltejs/​package@​2.5.7
	npm/​vitest@​4.1.5
	npm/​@​vitest/​coverage-v8@​4.1.5
	npm/​@​sveltejs/​vite-plugin-svelte@​7.0.0
	npm/​svelte@​5.55.5
	npm/​prettier@​3.8.2 ⏵ 3.8.3	+1		+1
	npm/​svelte-check@​4.4.6

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[socket-security]

Warning

Review the following alerts detected in dependencies.

According to your organization's Security Policy, it is recommended to resolve "Warn" alerts. Learn more about Socket for GitHub.

Action	Severity	Alert  (click "▶" to expand/collapse)
Warn		Obfuscated code: npm svelte is 91.0% likely obfuscated Confidence: 0.91 Location: Package overview From: examples/svelte/package.json → npm/svelte@5.55.5 ℹ Read more on: This package | This alert | What is obfuscated code? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Packages should not obfuscate their code. Consider not using packages with obfuscated code. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore npm/svelte@5.55.5. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.
Warn		Obfuscated code: npm svelte2tsx is 91.0% likely obfuscated Confidence: 0.91 Location: Package overview From: pnpm-lock.yaml → npm/@sveltejs/package@2.5.7 → npm/svelte2tsx@0.7.53 ℹ Read more on: This package | This alert | What is obfuscated code? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Packages should not obfuscate their code. Consider not using packages with obfuscated code. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore npm/svelte2tsx@0.7.53. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.

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