[feat](trx-rs): expose marine mode and ft8 live bar

Add an FT8 live overlay bar, align APRS top controls with the other decoder tabs, advertise MARINE in the SoapySDR mode list, and make the VDES decoder emit raw unsynced diagnostic frames instead of dropping weak bursts outright.

Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>

src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html

@@ -81,6 +81,7 @@
         <div id="rds-ps-overlay" aria-live="polite" aria-label="RDS station name"></div>
         <div id="ais-bar-overlay" aria-live="polite" aria-label="Recent AIS messages"></div>
         <div id="vdes-bar-overlay" aria-live="polite" aria-label="Recent VDES bursts"></div>
+        <div id="ft8-bar-overlay" aria-live="polite" aria-label="Recent FT8 decodes"></div>
         <div id="aprs-bar-overlay" aria-live="polite" aria-label="Recent APRS frames"></div>
       </div>
       <div id="spectrum-bookmark-axis"></div>
@@ -473,7 +474,7 @@
         <div id="vdes-messages"></div>
       </div>
       <div id="subtab-aprs" class="sub-tab-panel" style="display:none;">
-        <div class="aprs-controls">
+        <div class="ft8-controls aprs-controls">
           <button id="aprs-pause-btn" type="button">Pause</button>
           <button id="aprs-clear-btn" type="button">Clear</button>
           <input id="aprs-filter" class="ft8-filter" type="text" placeholder="Filter (e.g. SP2, beacon)" />