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FC-P2-T4: TUI call state machine - CallInfo struct + CallPhase enum (Calling/Ringing/Active) - Header shows call indicator: yellow "Calling...", magenta "Incoming", green timer - /call sets Calling, /accept sets Active, /reject+/hangup clears - Incoming signals show contextual messages (Offer→prompt, Answer→connected, etc.) FC-P2-T5: Missed call display in TUI - WS Text frames parsed for missed_call + bot_message JSON - Missed calls: "📞 Missed call from X at HH:MM" + terminal bell - Bot messages rendered as @botname: text FC-P8-T5: Inline keyboard buttons in web - CSS styled keyboard buttons (.kbd-btn) - Bot messages with reply_markup render clickable button rows - Click sends callback_data back to bot as bot_message - Works in both WS text handler and handleIncomingMessage fallback Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>