Ensure that host file parsing doesn't drop entries when parsing.

[djeebus]

Note

Refactors Hyperloop hosts update to safely rewrite /etc/hosts without dropping entries, adds newline-sensitive tests, and bumps version to 0.3.6.

• Backend/API:
  • Hosts rewrite: Replace direct txeh file ops with rewriteHostsFile using RawText and explicit write to avoid dropped entries when missing trailing newline.
    • Ensures trailing newline, determines IP family via netip, no-ops if mapping unchanged, writes with 0o644 perms, and sets E2B_EVENTS_ADDRESS on success.
• Tests:
  • Add TestSimpleCases covering various newline edge cases to verify stable hosts rewriting.
• Version:
  • Bump envd version from 0.3.5 to 0.3.6.

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[jakubno]

Otherwise it looks good

changes were implemented

[jakubno]

Last thing, can you increase envd versions 🙏🏻

[jakubno]

Actually you need to bump it one more time :D

envd version has been bumped (twice!)