## What changed
Move inline crate tests into `lib_tests.rs` and nest related test suites under each crate's `tests` module. Update imports, subprocess test filters, logging targets, and snapshot names to match the new module paths.
Keep test helpers accessible where needed and preserve the schema writer's exact test name used by release tooling.
GitOrigin-RevId: de55eaae66dce4941abb33dd0b2f170093daa8f9
## What changed
- Add `RemoteEnvironmentOptions` and `upsert_environment_with_options` so embedding hosts can attach trusted HTTP headers to remote exec-server WebSocket handshakes.
- Preserve the headers across session reconnects while redacting them from debug output.
- Reject invalid, duplicate, and WebSocket-controlled headers, and require `wss://` for non-loopback destinations.
- Connect header-bearing loopback WebSockets directly, with DNS results restricted to loopback addresses.
## Testing
- Cover header validation and redaction, delivery on initial connections and reconnects, and loopback destination enforcement.
GitOrigin-RevId: f2e2b0456c8e33c13fd8ab4ee040a8b5c15e885d
Dmitriy Kovalenko