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d6d4eb2c9c
Critical fixes for NimBLE host task / BLE loop task concurrency: - Defer all disconnect map cleanup from NimBLE callbacks to loop task via SPSC ring buffer, preventing iterator invalidation and use-after-free - Defer enterErrorRecovery() from callback context to loop task - Add WDT feed in enterErrorRecovery() host-sync polling loop Operational hardening: - Cache NimBLERemoteCharacteristic* pointers in write() to avoid repeated service/characteristic lookups per fragment - Add isConnected() checks before GATT operations (read, enableNotifications) - Validate peer address in notification callback to guard against handle reuse - Skip stuck-state detector during CONNECTING/CONN_STARTING states - Expire stale pending data entries after HANDSHAKE_TIMEOUT (30s) - Read actual connection RSSI via ble_gap_conn_rssi() for peripheral connections instead of hardcoding 0 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>