zebra-spaces: one transcript line per sentence (host self-transcribe parity)

Fox 2026-06-05: "the self speech to text is not creating new lines
for when there is new sentence, the listeners are doing a better
job."

Both self-capture and remote-speaker capture go through the same
handleWhisperChunk → appendTranscriptLine path. Each Whisper chunk
is 5 seconds. The listener-side capture often catches a peer mid-
pause, so each 5s chunk ends up holding one short sentence — one
line in the log. The host on a close mic talks continuously for
the full 5s window, so Whisper returns "Hello there. How are you.
Good to see you." as a single string → one mashed line.

Fix at the dispatch point (not the capture point): split the
Whisper output on sentence-terminating punctuation
(period/exclaim/question followed by whitespace) and call
appendTranscriptLine once per sentence. Each sentence gets the
same hallucination + min-length filtering as the original whole
result.

Applies to BOTH self capture and remote capture since they share
the same handler — listener-side transcripts also get cleaner when
two sentences happen to fit in one chunk.

web/zebra-spaces.html

@@ -2336,7 +2336,24 @@ async function handleWhisperChunk(uuid, chunk){
     if (WHISPER_HALLUCINATIONS.has(norm)) return;
     if (_lastTranscriptByUuid.get(uuid) === txt) return;
     _lastTranscriptByUuid.set(uuid, txt);
-    appendTranscriptLine(uuid, txt);
+    /* One chunk can contain multiple sentences when the speaker doesn't
+     * pause inside the 5s window (typical for the host on a close mic).
+     * Whisper concatenates them — split on sentence-terminating
+     * punctuation and emit one transcript line per sentence so the
+     * self-transcript matches the per-sentence cadence the listener
+     * captures already produce. Fox 2026-06-05: "the self speech to
+     * text is not creating new lines for when there is new sentence,
+     * the listeners are doing a better job." */
+    const sentences = txt
+      .split(/(?<=[.!?])\s+/)
+      .map(s => s.trim())
+      .filter(s => s.length > 0);
+    for (const s of sentences){
+      const sNorm = s.toLowerCase().replace(/[.!?,;:\s]+$/,'').trim();
+      if (sNorm.length < 2) continue;
+      if (WHISPER_HALLUCINATIONS.has(sNorm)) continue;
+      appendTranscriptLine(uuid, s);
+    }
     _whisperTick.emitted++;
   } catch (err){
     logLine('err', 'whisper transcribe '+uuid.slice(0,4)+': '+err.message);
@@ -7859,8 +7876,8 @@ logLine('', 'ready — pick a handle, type a rendezvous code, enter the space');
 
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