Remove raw output display and filter DSD startup banner lines

The dmrRawOutput div was rendering garbled box-drawing characters from
the dsd-fme ASCII art banner below the signal activity canvas. Remove
the div and filter banner lines (box-drawing chars, version info) in
the parser so they never become events.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

routes/dmr.py

@@ -97,6 +97,13 @@ def parse_dsd_output(line: str) -> dict | None:
     if not line:
         return None
 
+    # Skip DSD/dsd-fme startup banner lines (ASCII art, version info, etc.)
+    # These contain box-drawing characters or are pure decoration.
+    if re.search(r'[╔╗╚╝║═██▀▄╗╝╩╦╠╣╬│┤├┘└┐┌─┼█▓▒░]', line):
+        return None
+    if re.match(r'^\s*(Build Version|MBElib|CODEC2|Audio (Out|In)|Decoding )', line):
+        return None
+
     ts = datetime.now().strftime('%H:%M:%S')
 
     # Sync detection: "Sync: +DMR (data)" or "Sync: +P25 Phase 1"

static/js/modes/dmr.js

@@ -193,9 +193,7 @@ function handleDmrMessage(msg) {
     } else if (msg.type === 'slot') {
         // Update slot info in current call
     } else if (msg.type === 'raw') {
-        // Raw DSD output — update last line display for diagnostics
+        // Raw DSD output — triggers synthesizer activity via dmrSynthPulse
-        const rawEl = document.getElementById('dmrRawOutput');
-        if (rawEl) rawEl.textContent = msg.text || '';
     } else if (msg.type === 'heartbeat') {
         // Decoder is alive and listening — keep synthesizer in listening state
         if (isDmrRunning && dmrSynthInitialized) {
@@ -222,8 +220,6 @@ function handleDmrMessage(msg) {
             if (typeof showNotification === 'function') {
                 showNotification('DMR Error', detail);
             }
-            const rawEl = document.getElementById('dmrRawOutput');
-            if (rawEl) rawEl.textContent = detail;
         } else if (msg.text === 'stopped') {
             isDmrRunning = false;
             updateDmrUI();

templates/index.html

@@ -1623,7 +1623,6 @@
                             <span id="dmrSynthStatus" style="color: var(--text-muted); font-size: 9px; font-family: var(--font-mono);">IDLE</span>
                         </div>
                         <canvas id="dmrSynthCanvas" style="width: 100%; height: 70px; background: rgba(0,0,0,0.4); border-radius: 4px; display: block;"></canvas>
-                        <div id="dmrRawOutput" style="font-size: 9px; font-family: var(--font-mono); color: var(--text-muted); margin-top: 4px; height: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;"></div>
                     </div>
                     <div style="display: grid; grid-template-columns: 1fr 1fr; gap: 12px;">
                         <!-- Call History Panel -->