Clarify network semantic pause boundaries

app.py

@@ -137,6 +137,7 @@ NETWORK_REQUEST_ORDINARY_MAX_UNITS = 36
 NETWORK_INTERNAL_FADE_MS = 5.0
 NETWORK_INTERNAL_SILENCE_MS = 400.0
 SEMANTIC_CHUNK_MIN_SILENCE_MS = 250.0
+NETWORK_REQUEST_SEMANTIC_CHUNK_MIN_SILENCE_MS = 350.0
 STOP_THRESHOLD = 0.50
 STOP_LATE_THRESHOLD = 0.05
 STOP_LATE_START_RATIO = 0.75
@@ -977,6 +978,11 @@ def _assemble_trajectory_audio(
             ):
                 raise ValueError("network boundary lacks shared identifier proof")
     audio_chunks = [np.asarray(audio, dtype=np.float32).copy() for audio in trajectory]
+    semantic_min_silence_ms = (
+        NETWORK_REQUEST_SEMANTIC_CHUNK_MIN_SILENCE_MS
+        if chunk_specs is not None and any(spec.network_conditioned for spec in chunk_specs)
+        else SEMANTIC_CHUNK_MIN_SILENCE_MS
+    )
     pauses: list[int] = []
     fades_ms: list[float] = []
     crossfades_ms: list[float] = []
@@ -997,7 +1003,7 @@ def _assemble_trajectory_audio(
                 if network_internal
                 else max(
                     punctuation_pause_seconds(chunk),
-                    SEMANTIC_CHUNK_MIN_SILENCE_MS / 1000.0,
+                    semantic_min_silence_ms / 1000.0,
                 )
             )
             pauses.append(int(round(pause_seconds * SR)))

tests/test_release_pins.py

@@ -387,12 +387,13 @@ def test_app_rejects_silent_text_and_coalesces_before_runtime_budgeting():
     assert "NETWORK_INTERNAL_FADE_MS = 5.0" in source
     assert "NETWORK_INTERNAL_SILENCE_MS = 400.0" in source
     assert "SEMANTIC_CHUNK_MIN_SILENCE_MS = 250.0" in source
+    assert "NETWORK_REQUEST_SEMANTIC_CHUNK_MIN_SILENCE_MS = 350.0" in source
     assert 'chunk_specs[index].boundary_after == "network_internal"' in (
         assemble_source
     )
     assert "NETWORK_INTERNAL_SILENCE_MS / 1000.0" in assemble_source
     assert "punctuation_pause_seconds(chunk)" in assemble_source
-    assert "SEMANTIC_CHUNK_MIN_SILENCE_MS / 1000.0" in assemble_source
+    assert "semantic_min_silence_ms / 1000.0" in assemble_source
     assert "pauses.append(int(round(pause_seconds * SR)))" in assemble_source
     assert "join_audio_chunks_variable(" in assemble_source
     assert "network_conditioned=network_flags" in synthesize_source