feat: support negotiated Linux read replies

[enaboapps]

Closes #154. Depends on #155 Expo patch alignment; desktop counterpart switchifyapp/switchify-pc#725. Adds explicit read-v1 discovery negotiation, single consuming response read at a time, bounded frames/timeouts, cancellation and stale completion suppression. Existing desktops retain notifications; unknown transports fail closed. No native bridge, identity, release version or persisted schema changes.

Full npm run validate passed: 580 tests, lint/typecheck/version checks and Expo Doctor21/21. Independent latest-head review and CI pending. Physical Android read interoperability still required before release.

[greptile-apps]

Greptile Summary

This PR adds negotiated BLE read-based replies for compatible Linux peers while retaining notification-based replies for existing peers. It introduces a bounded serial response poller, cancellation and timeout handling, stale-delivery suppression, receive-failure write lockout until reconnect, protocol discovery fields, compatibility documentation, and Expo SDK 57 patch dependency alignment.

Confidence Score: 5/5

Safe to merge: the read-response connection lifecycle and recovery behavior were exercised successfully.

No issues were found. Focused checks confirmed that late read completions and failures cannot affect a later connection, receive failures prevent further writes until reconnect, the relevant regression tests pass, and TypeScript validation succeeds.

Files Needing Attention: No files need follow-up changes.

T-Rex Logs

What T-Rex did

• Ran a focused deferred-read connection test against the prior implementation and the updated implementation.
• Ran the changed BLE transport and response-poller test suites; all tests passed (73/73).
• Ran TypeScript validation successfully.
• Compared baseline and HEAD behavior for the negotiated-read flow; baseline cannot run it while HEAD passes all focused cases and the changed transport/poller suite passes 73/73 with typecheck.

_{Ran code and verified through T-Rex}

_{Reviews (1): Last reviewed commit: "chore: align Expo SDK 57 patch dependenc..." | Re-trigger Greptile}

[enaboapps]

Latest head 43590fb passed independent agent review with no actionable findings, full local validation (580 tests; Expo Doctor 21/21), Android and iOS native CI, and Greptile review. Prerequisite #156 is merged and pulled. User approved merging and releasing the next Remote beta. Physical Linux pairing/control remains a separate supervised validation gate.