hakurei 0.3.4

Fixes:
- Treat `internal/pipewire` network errors as fatal.

Enhancements:
- No longer poll possibly blocking calls in `internal/pipewire`.
- Shared permissionless filesystem via `cmd/sharefs`.
- Intern checked absolute pathnames.

Internal:
- Handle socket fd directly in `internal/pipewire`.
- Hakurei is now fully self-hosted via `internal/rosa`.
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