fix: Address PR #5 review comments - hook ordering, error handling, polyfills

[Copilot]

Addresses code review feedback from PR #5 review thread #5 (review)

Changes

• Vue composable hook ordering: useOwner now calls useEvolu() unconditionally at function top, preventing conditional hook invocation that violates Vue's composable rules

• Relay error handling: startRelay return type changed from Task<Relay, never, ...> to Task<Relay, SqliteError, ...>. Errors now propagate correctly instead of returning a disposed AsyncDisposableStack

• Test polyfill: Added Promise.withResolvers polyfill to packages/nodejs/test/setup.ts for environments lacking ES2024 support

• Cleanup: Removed accidentally committed biome_errors_2.txt diagnostic file

Notes

Workflow file documentation changes (.github/workflows/*.yaml) not included due to repository protection rules requiring exemption approval.

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