v0.0.37: TUI call state UI, missed calls, inline keyboards in web

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>

warzone/Cargo.toml

@@ -9,7 +9,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.0.36"
+version = "0.0.37"
 edition = "2021"
 license = "MIT"
 rust-version = "1.75"