wadamesh beta_51

wadamesh beta_51 is a community drop — a chat layout change, a channel-airtime tool, and a lockscreen fix. Thanks to @Yazutsu, @scratchdiver and @jacobpretorius.

Test build. Turn on Get test builds (beta) on the device, use the Beta toggle on the web flasher, or grab a -merged.bin below. Stable stays on beta_46.

Chat — by @scratchdiver (#182)

• Message bubbles now put the time on the top row next to the sender, so more messages fit on screen. Applies to channels, DMs and room-server threads.

New: Airtime tool — by @jacobpretorius (#176)

• A new Airtime app in the Apps drawer measures how busy the LoRa channel actually is, so congestion can be checked against real data instead of assumed. It shows channel utilization over time, packets lost at the radio (CRC errors, late reads, queue drops), live RSSI/noise, the LoRa preset, and a plain verdict.

Fixed

• Lockscreen wallpaper no longer corrupts into coloured noise after visiting the map — a stale LVGL image-cache entry pointed at freed PSRAM the map had reused. By @Yazutsu (#181, fixes #127).
• T-Display P4: the text-size setting works again — it was pinned to 100% and ignored your choice.

Boards

T-Deck · Heltec V4 TFT · Heltec V4-R8 · ThinkNode M9 · RAK TAP v2 · T-LoRa Pager (LR1121 / SX1262) · Attaky Core · T-Display P4 (AMOLED + LCD). Flash <board>-merged.bin at 0x0 for a full install, or <board>.bin for an app-only update.