Fix: ESP32 KISS modem becomes permanently unresponsive under TX backpressure#2646

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agessaman:fix/kiss-modem-esp32-usb-lockup

Commits on May 30, 2026

Implement non-blocking write mechanism in KissModem to prevent TX buffer stalls. Introduce frame write management and update related methods for improved handling of serial communication. Adjust pl…
agessaman
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Refine comments in KissModem to clarify non-blocking write behavior and timeout handling for USB-CDC. Enhance documentation for better understanding of frame management and serial communication flow.
agessaman
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