Keep multiline beat prompts intact

dumas_h3_longvideos.py

@@ -317,34 +317,25 @@ def expand_beats(paras, mode="auto"):
     (beats, note).
 
     Beats are separated by a BLANK line (or a '##' line). That is unambiguous, but
-    it is also the single easiest thing to get wrong in a textarea: six beats typed
-    on six consecutive lines are one paragraph, so they render as ONE shot with six
-    actions crammed into it -- which reads as characters moving at triple speed, not
-    as a splitting problem.
+    it is also easy to misread once a dedicated beat editor exists: inside the
+    beat editor, one textbox is one beat, so plain newlines inside that textbox
+    should stay inside the same beat rather than quietly creating new shots.
 
     mode:
-      'auto'      -- blank lines first; any paragraph still holding more than one
-                     content line is then split one beat per line, and says so.
-      'each line' -- every content line is its own beat. Same result as 'auto'; kept
-                     so the intent can be stated explicitly.
-
-    There is deliberately no strict blank-lines-only mode any more. It was the ONE
-    setting that could silently lose beats: six beats typed as two blocks of three
-    rendered as two shots, with no note to say why, because the split note is only
-    written when a paragraph is actually split. Nothing else on the node can change
-    the beat count, so removing that option removes the whole failure class. A
-    workflow that still stores 'blank line' falls through to 'auto' below.
+      'auto'      -- preserve each paragraph as one beat.
+      'each line' -- every content line is its own beat, with directive lines
+                     attaching to the beat they configure.
 
     Directive lines ('wardrobe:', 'seconds:', 'exit:' ...) are never beats of their
     own: they attach to the next content line, or to the previous beat if they
     trail the paragraph."""
-    # Any unrecognized mode means AUTO, never "do nothing". An earlier version fell
-    # through an if/elif with no else and silently DROPPED every multi-line paragraph
-    # -- six beats arrived as two shots with four beats simply gone. A stale value on
-    # this widget (including 'blank line' from a workflow saved before it was removed)
-    # is enough to trigger it, so the safe branch has to be the default.
+    # Any unrecognized mode means AUTO, never "do nothing". Older workflows may
+    # still store removed values such as 'blank line'; those should preserve whole
+    # paragraphs instead of unexpectedly splitting every newline into a beat.
     if mode not in ("auto", "each line"):
         mode = "auto"
+    if mode == "auto":
+        return [p.strip() for p in (paras or []) if str(p or "").strip()], ""
     out, split_from = [], 0
     for p in paras:
         lines = [ln for ln in (p or "").splitlines() if ln.strip()]
@@ -370,10 +361,9 @@ def expand_beats(paras, mode="auto"):
                 else:
                     out.append(NL.join(pending))
     note = ""
-    if split_from and mode == "auto":
-        note = (f"{split_from} paragraph(s) held several lines and were split one beat per LINE "
-                f"-> {len(out)} beats. Separate beats with a BLANK line (or a '##' line) to control "
-                f"this yourself")
+    if split_from:
+        note = (f"beat_split '{mode}' split {split_from} multi-line paragraph(s) into "
+                f"{len(out)} beats")
     return out, note
 
 
@@ -6154,17 +6144,12 @@ class H3LongVideos:
                                "EVERY ref-conditioned shot, so on a long chain it is several times "
                                "slower. Neither ever upscales a small reference."}),
                 "beat_split": (["auto", "each line"], {"default": "auto",
-                    "tooltip": "How the prompt box becomes beats. Beats are meant to be separated by a "
-                               "BLANK line (or a '##' line) -- but six beats typed on six consecutive "
-                               "lines are ONE paragraph, so they would render as one shot with six actions "
-                               "crammed into it, which looks like everyone is moving at triple speed. "
-                               "auto (default): blank lines first, then any paragraph still holding "
-                               "several lines is split one beat per LINE, and the info output says so. "
-                               "'each line': every line is its own beat -- same result, stated explicitly. "
-                               "Neither can lose a beat. (The old strict 'blank line' option was REMOVED: "
-                               "it was the only setting that could silently collapse beats, and a stored "
-                               "value of it now reads as 'auto'.) Directive lines (wardrobe:, seconds:, exit:) "
-                               "are never beats -- they attach to the beat that follows them."}),
+                    "tooltip": "How the prompt box becomes beats. Beats are separated by a BLANK line "
+                               "(or a '##' line). auto (default): each paragraph stays one beat, so "
+                               "plain newlines inside a beat remain part of that beat. 'each line': every "
+                               "content line becomes its own beat, with directive lines (wardrobe:, "
+                               "seconds:, exit:, etc.) attaching to the beat they configure. Older "
+                               "removed values such as 'blank line' now behave like 'auto'."}),
                 "anchor_override": ("STRING", {"multiline": True, "forceInput": True, "default": "",
                     "tooltip": "Set the persistent look explicitly instead of using the first paragraph. "
                                "When this is filled in, EVERY paragraph of the prompt box is a beat/shot -- "

tests/test_dumas_h3_longvideos.py

@@ -160,6 +160,45 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             "keyframe carry",
         )
 
+    def test_expand_beats_auto_preserves_multiline_paragraph_as_one_beat(self):
+        beats, note = self.module.expand_beats(
+            ["wardrobe: Maya = red jacket\nMaya enters the room.\nShe sits at the table."],
+            "auto",
+        )
+
+        self.assertEqual(
+            beats,
+            ["wardrobe: Maya = red jacket\nMaya enters the room.\nShe sits at the table."],
+        )
+        self.assertEqual(note, "")
+
+    def test_expand_beats_legacy_blank_line_value_falls_back_to_auto(self):
+        beats, note = self.module.expand_beats(
+            ["Maya enters the room.\nShe sits at the table."],
+            "blank line",
+        )
+
+        self.assertEqual(
+            beats,
+            ["Maya enters the room.\nShe sits at the table."],
+        )
+        self.assertEqual(note, "")
+
+    def test_expand_beats_each_line_still_splits_multiline_paragraphs(self):
+        beats, note = self.module.expand_beats(
+            ["wardrobe: Maya = red jacket\nMaya enters the room.\nseconds: 8\nShe sits at the table."],
+            "each line",
+        )
+
+        self.assertEqual(
+            beats,
+            [
+                "wardrobe: Maya = red jacket\nMaya enters the room.",
+                "seconds: 8\nShe sits at the table.",
+            ],
+        )
+        self.assertIn("beat_split 'each line' split 1 multi-line paragraph(s) into 2 beats", note)
+
     def test_timing_summary_reports_retry_and_bucket_totals(self):
         note = self.module._format_timing_note([
             {