Warn before tracing incremental builds

[rogierx]

Summary

• Warn when a generated trace is started while TypeScript build mode, incremental, or composite options are active.
• Inspect the active tsconfig before spawning the trace command, while also honoring CLI flags in the configured trace command.
• Remove package-manager caching from the tag-triggered release workflow so this branch avoids shared caches in a publish/release workflow.

Addresses #21.

Validation

• pnpm exec vitest run test/index.test.ts
• pnpm run typecheck
• pnpm exec eslint src/incrementalTrace.ts src/commands.ts test/index.test.ts
• pnpm exec rollup -c
• git diff --check