feat: Apply a distinct background color to firehose lines.

engine/scroll.py

@@ -15,9 +15,10 @@ from engine.render import big_wrap, lr_gradient, make_block
 from engine.effects import noise, glitch_bar, fade_line, vis_trunc, next_headline, firehose_line
 
 _ANSI_LINE_RE = re.compile(r"^(\033\[[0-9;]*m)(.*)(\033\[0m)$")
+FIREHOSE_BG = "\033[48;5;233m"
 
 
-def _overlay_segments(ansi_line):
+def _overlay_segments(ansi_line, bg=""):
     """Return (1-indexed column, colored chunk) for non-space runs in a line."""
     m = _ANSI_LINE_RE.match(ansi_line)
     if m:
@@ -34,7 +35,10 @@ def _overlay_segments(ansi_line):
         while j < len(text) and text[j] != " ":
             j += 1
         chunk = text[i:j]
-        segs.append((i + 1, f"{color}{chunk}{RST}" if color else chunk))
+        if bg or color:
+            segs.append((i + 1, f"{bg}{color}{chunk}{RST}"))
+        else:
+            segs.append((i + 1, chunk))
         i = j
     return segs
 
@@ -223,7 +227,9 @@ def stream(items, ntfy_poller, mic_monitor):
                 scr_row = firehose_top + fr + 1
                 if scr_row <= msg_h or scr_row > h:
                     continue
-                for col, chunk in _overlay_segments(fline):
+                # Opaque row backdrop to distinguish firehose from ticker beneath it.
+                buf.append(f"\033[{scr_row};1H{FIREHOSE_BG}{' ' * w}{RST}")
+                for col, chunk in _overlay_segments(fline, FIREHOSE_BG):
                     buf.append(f"\033[{scr_row};{col}H{chunk}")
 
         sys.stdout.buffer.write("".join(buf).encode())