Add character helper reference outputs

H3_LONG_VIDEOS_GUIDE.md

@@ -1149,81 +1149,42 @@ These two belong together.
 
 If you change `shift_video`, you usually need to change `shift_audio` in proportion.
 
-## Group 8: Detail Pass
+## Group 8: Latent Upscale
 
-This is the optional second pass.
+This is the optional latent refinement stage, used before decode.
 
-### `detail_pass`
+The long-video node now expects a separate `Dumas H3 Latent Upscale Params` node for this stage.
-
+Wire that node into the `latent_upscale_param` input when you want the shot to be upscaled and lightly
-Enables the refinement pass.
+re-sampled before decode.
 
 What this really means:
 
 - the node renders the beat once
-- then runs a second sampler pass over that result
+- the sampled latent is upscaled in latent space to the target size
-- the goal is to polish, not to invent a whole different shot
+- the conditioning is rebuilt at that target size
-
+- the node then runs a short refinement pass over the upscaled latent with the sampler, scheduler, step count, denoise, and megapixel target you picked on the latent-upscale params node
-### `detail_sampler_name`
+- if the target is larger than the spatial tile size, that refinement pass is processed in spatial batches using the same tile defaults as the upstream latent-split node
-
+- the spatial stitch mode follows the upstream overlap controls, including `linear`, `smoothstep`, `overwrite`, and `midpoint`
-Sampler for the refinement pass.
+- the node also carries the upstream split compatibility knobs (`chunk_length`, `temporal_overlap`, `resize_conditioning`, and `anchor_strength`) so the control surface stays in one place
-
-### `detail_scheduler`
-
-Scheduler for the refinement pass.
-
-### `detail_steps`
-
-Extra steps for the refinement pass.
-
-What this really means:
-
-- more steps gives the second pass more opportunity to change the image
-- that can help detail
-- but after a point it stops being "cleanup" and starts becoming "rewrite"
-
-### `detail_denoise`
-
-How strongly the refinement pass is allowed to rewrite the beat.
-
-What this really means:
-
-- low denoise = polish what is already there
-- high denoise = let the second pass substantially alter what is already there
-
-### How The Detail-Pass Settings Work Together
-
-The detail pass starts from the first-pass result and tries to polish it.
-
-Gentle settings:
-
-- low to medium `detail_steps`
-- low `detail_denoise`
-
-Aggressive settings:
-
-- high `detail_steps`
-- high `detail_denoise`
-
-Aggressive settings can improve texture, but they can also:
-
-- change faces
-- pull away from references
-- break continuity
-
-That is why this group should be read as one combined strength control:
-
-- `detail_pass` decides whether the second pass exists
-- `detail_steps` decides how long it keeps working
-- `detail_denoise` decides how free it is to change things
-- `detail_sampler_name` and `detail_scheduler` shape how that rewrite behaves
 
 Good starting point:
 
-- `detail_pass = on`
+- use the `model` mode when you want the strongest latent detail recovery
-- `detail_sampler_name = euler`
+- use the interpolation mode when you want a cheaper resize-only path
-- `detail_scheduler = beta`
+- start with `euler_ancestral`, `simple`, `2` steps, and `0.2` denoise
-- `detail_steps = 4` to `8`
+- leave width and height at `0` unless you want an exact override; otherwise `megapixels` drives the target size
-- `detail_denoise = 0.20` to `0.35`
+- for long shots on smaller cards, start with `chunk_length = 85` and `temporal_overlap = 17` so the latent upscaler works in shorter temporal passes
+- leave the spatial tile inputs at their defaults first: `512x512` tiles, `64` overlap, `0` fade width, `earlier` overlap mode
+- keep `linear` blend first unless you want to reproduce a specific upstream stitch style
+- leave the split compatibility knobs alone unless you specifically need to mirror the upstream node behavior
+
+The important part is that this stage is still a latent pass, not a pixel-space resize:
+
+- it happens before decode
+- it can change structure more than a normal image upscale
+- it is the place to recover detail without adding another full detail-pass toggle
+
+If you do not wire the helper node, the long-video node skips latent upscale entirely and renders as before.
 
 ## Group 9: Performance, Decode, And Upscale
 

README.md

@@ -43,13 +43,26 @@
   - Prompt `<Picture N>` tags now map to the actual ref socket numbers you wire, even with gaps such as only `ref_2` and `ref_7` connected.
   - Character refs now contribute appearance and wardrobe context from the same structured object, while location refs contribute environment context from theirs.
   - The default ref2v bias is now stronger: `ref_mode` defaults to `auto ref2v` so untagged prompts condition every shot instead of only shot 1, and `ref_noise_aug` defaults to `0.95` rather than the upstream-literal `0.999`.
+  - `Dumas H3 Latent Upscale Params` provides the optional pre-decode latent refinement stage for the long-video node.
   - Per-shot directives now support `continuity:`, `ref_mode:`, `ref_noise_aug:`, `anchor_add:`, `soundscape:`, and `music:` in addition to the existing timing and wardrobe directives.
 
+- `Dumas H3 Latent Upscale Params`
+  - Inputs: `mode`, `model_name`, `method`, `width`, `height`, `device`, `precision`, `sampler_name`, `scheduler`, `steps`, `denoise`, `megapixels`, `tile_width`, `tile_height`, `overlap`, `fade_width`, `fade_height`, `overlap_mode`, `overlap_blend`, `tile_size_mode`, `grid_rows`, `grid_cols`, `spatial_w_overlap`, `spatial_h_overlap`, `min_tile_size`, `masked_area_noise`, `brightness_match`, `dynamic_fade`, `dynamic_fade_min`, `chunk_length`, `temporal_overlap`, `resize_conditioning`, `anchor_strength`
+  - Output: `latent_upscale_param`
+  - Bundles the optional latent-space upscaler settings used by `Dumas H3 Long Videos` before decode, so the main node can rebuild conditioning at the target size and run a short refinement pass with your chosen sampler, scheduler, step count, denoise, and the full upstream spatial split controls.
+
 - `Dumas H3 Beat Prompt`
   - Inputs: authored through the custom front-end beat editor
   - Output: `prompt`
   - Builds one H3 prompt block per beat, with quick controls for per-shot timing, continuity, ref behavior, anchor additions, soundscape, and music while staying compatible with direct text editing.
 
+- `Dumas H3 Prompt Curator`
+  - Inputs: `action_prompt`, `anatomy_guard`, `subject_count_guard`, optional `anchor`, optional `soundscape`, optional `ref_1` through `ref_9`
+  - Outputs: `prompt`, `ref_image_1` through `ref_image_9`, `reference_count`, `debug`
+  - Builds one standalone MiniMax H3 prompt from your final action text plus structured character/location references.
+  - The action text can mention references by character/location name, alias, `<Picture N>`, or `<refN>`. Only mentioned references are emitted, and the output images are compacted/renumbered so skipped inputs do not leave gaps.
+  - Adds curated reference context, anatomy guard text, optional subject-count guard text, anchor/style text, and `overall_soundscape:` text while respecting MiniMax H3's reference-generation shape: one prompt plus up to nine reference images.
+
 - `Dumas H3 Shot Length`
   - Inputs: `shot_seconds`, `fps`, optional `cap_to_h3_max`
   - Outputs: `seconds`, `frames`, `info`
@@ -70,6 +83,17 @@
   - Output: `reference`
   - Builds one structured `REFERENCE` object for a location/environment so H3 can use the same socket type for both character and scenic refs.
 
+- `Dumas Character Helper`
+  - Inputs: `image1`, `image2`, picture IDs, character identity fields, `general`, `wardrobe`
+  - Outputs: `image1`, `image2`, `reference_prompt`, `wardrobe`, `reference1`, `reference2`
+  - Restores the original general-purpose helper shape while also emitting two structured `REFERENCE` objects for the prompt curator.
+  - The structured references carry the same character name, alias, age, height, gender, nationality, occupation, accent, wardrobe, and notes, so mentioning the character name in `Dumas H3 Prompt Curator` can include both helper images and the character facts automatically.
+
+- `Dumas Location Helper`
+  - Inputs: `image1`, `image2`, picture IDs, `location_id`, `name`, `alias`, `description`, `general`
+  - Outputs: `image1`, `image2`, `reference_prompt`
+  - Matching general-purpose helper for environments/locations: pass two images through unchanged and emit location reference prompt text.
+
 - `Dumas Anchor Style`
   - Inputs: `anchor_style`, `style_description`
   - Output: `anchor`
@@ -77,6 +101,11 @@
   - The preset wording is tuned for H3-safe persistent anchors: camera language, lighting, texture, production treatment, and tone, without naming characters or describing one-off actions.
   - Selecting a preset fills the editable description field, and the edited multiline description is the `STRING` value passed downstream into H3 anchor sockets such as `anchor_override`.
 
+- `Dumas Soundscape Helper`
+  - Inputs: `soundscape`, `soundscape_description`
+  - Output: `soundscape`
+  - Matching soundscape helper for standalone H3 prompts. Pick a preset such as quiet interior, rainy street, cafe, city night, forest, industrial, or silent, then edit the text that flows into `Dumas H3 Prompt Curator`.
+
 - `Dumas JSON String to Object`
   - Input: `json_string`
   - Output: parsed `JSON`
@@ -233,7 +262,7 @@ decr  -> use index - 1
 
 `Dumas H3 Plan Attach Scene Images` and `Dumas H3 Plan Extract Scene Images` are a companion pair for `ComfyUI-MiniMaxH3-Contex-Loop` and the local `ref2v` lane. The upstream H3 plan node cannot dynamically grow nine new image sockets for every JSON-defined scene, so Dumas stores scene image bindings beside the plan using a lightweight token and an in-memory registry. That keeps `plan.json` archiving intact while still letting you wire up nine IMAGE sockets per scene through chained helper nodes.
 
-`Dumas Character Reference` and `Dumas Location Reference` live in `Dumas/MiniMax`. Both output a structured `REFERENCE` object that carries the image plus its semantic payload. `Dumas H3 Long Videos` accepts those `REFERENCE` sockets directly on `ref_1`..`ref_9`, resolves `<Picture N>` against the wired slot positions, and can also pull character wardrobe context from the structured ref data when `character_memory` is left blank.
+`Dumas Character Helper` is the restored two-image/text helper for general H3 workflows, and `Dumas Location Helper` mirrors it for scene/environment references. The structured `Dumas Character Reference` and `Dumas Location Reference` nodes remain available separately for workflows that want a single `REFERENCE` socket. `Dumas H3 Prompt Curator` consumes those structured references, assigns the final `<Picture N>` numbering, and outputs only the compacted images the prompt actually mentions.
 
 `Dumas Strip Iteration Suffix` keeps the part before the first underscore and drops the rest. Names like `char123_pose_final.png` become `char123.png`, while names with no underscore such as `char123.png` are left untouched.
 

__init__.py

@@ -14,6 +14,10 @@ from .dumas_h3_longvideos import (
     NODE_CLASS_MAPPINGS as H3_LONGVIDEO_NODE_CLASS_MAPPINGS,
     NODE_DISPLAY_NAME_MAPPINGS as H3_LONGVIDEO_NODE_DISPLAY_NAME_MAPPINGS,
 )
+from .dumas_h3_latent_upscale import (
+    NODE_CLASS_MAPPINGS as H3_LATENT_UPSCALE_NODE_CLASS_MAPPINGS,
+    NODE_DISPLAY_NAME_MAPPINGS as H3_LATENT_UPSCALE_NODE_DISPLAY_NAME_MAPPINGS,
+)
 from .dumas_h3_shot_length import (
     NODE_CLASS_MAPPINGS as H3_SHOT_LENGTH_NODE_CLASS_MAPPINGS,
     NODE_DISPLAY_NAME_MAPPINGS as H3_SHOT_LENGTH_NODE_DISPLAY_NAME_MAPPINGS,
@@ -31,6 +35,7 @@ NODE_CLASS_MAPPINGS = {}
 NODE_CLASS_MAPPINGS.update(JSON_NODE_CLASS_MAPPINGS)
 NODE_CLASS_MAPPINGS.update(IMAGE_NODE_CLASS_MAPPINGS)
 NODE_CLASS_MAPPINGS.update(H3_LONGVIDEO_NODE_CLASS_MAPPINGS)
+NODE_CLASS_MAPPINGS.update(H3_LATENT_UPSCALE_NODE_CLASS_MAPPINGS)
 NODE_CLASS_MAPPINGS.update(H3_SHOT_LENGTH_NODE_CLASS_MAPPINGS)
 NODE_CLASS_MAPPINGS.update(H3_INSPECTOR_NODE_CLASS_MAPPINGS)
 NODE_CLASS_MAPPINGS.update(H3_BEAT_PROMPT_NODE_CLASS_MAPPINGS)
@@ -39,6 +44,7 @@ NODE_DISPLAY_NAME_MAPPINGS = {}
 NODE_DISPLAY_NAME_MAPPINGS.update(JSON_NODE_DISPLAY_NAME_MAPPINGS)
 NODE_DISPLAY_NAME_MAPPINGS.update(IMAGE_NODE_DISPLAY_NAME_MAPPINGS)
 NODE_DISPLAY_NAME_MAPPINGS.update(H3_LONGVIDEO_NODE_DISPLAY_NAME_MAPPINGS)
+NODE_DISPLAY_NAME_MAPPINGS.update(H3_LATENT_UPSCALE_NODE_DISPLAY_NAME_MAPPINGS)
 NODE_DISPLAY_NAME_MAPPINGS.update(H3_SHOT_LENGTH_NODE_DISPLAY_NAME_MAPPINGS)
 NODE_DISPLAY_NAME_MAPPINGS.update(H3_INSPECTOR_NODE_DISPLAY_NAME_MAPPINGS)
 NODE_DISPLAY_NAME_MAPPINGS.update(H3_BEAT_PROMPT_NODE_DISPLAY_NAME_MAPPINGS)

dumas_h3_inspector.py

@@ -150,7 +150,16 @@ class H3ModelInspector:
 
     @classmethod
     def INPUT_TYPES(cls):
-        return {"required": {"model": ("MODEL",)}}
+        return {
+            "required": {
+                "model": (
+                    "MODEL",
+                    {
+                        "tooltip": "MiniMax / H3 model to inspect for quantization and tensor format."
+                    },
+                )
+            }
+        }
 
     def inspect(self, model):
         label, _counts, report = _detect(model)

dumas_h3_shot_length.py

@@ -39,10 +39,11 @@ class H3ShotLength:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "shot_seconds": ("FLOAT", {"default": 5.0, "min": 0.2, "max": 15.1, "step": 0.5,
+                "shot_seconds": ("FLOAT", {"default": 3.0, "min": 0.2, "max": 15.1, "step": 0.5,
                     "tooltip": "Length of each shot. Feeds the sampler's shot_seconds AND (as frames) "
-                               "the preview override. Max ~15s (362 frames)."}),
+                               "the preview override. Default 3s matches the common one-beat H3 test shot. Max ~15s (362 frames)."}),
-                "fps": ("INT", {"default": 24, "min": 1, "max": 60}),
+                "fps": ("INT", {"default": 24, "min": 1, "max": 60,
+                    "tooltip": "Frame rate used for the seconds->frames conversion. H3 itself renders at 24fps, so 24 is the realistic default."}),
             },
             "optional": {
                 "cap_to_h3_max": ("BOOLEAN", {"default": True,

dumas_image_nodes.py

@@ -27,6 +27,19 @@ _H3_PLAN_IMAGE_BINDINGS_CAP = 128
 _H3_PLAN_IMAGE_SLOTS = 9
 _FOLDER_IMAGE_EXTS = (".png", ".jpg", ".jpeg", ".webp", ".bmp", ".gif", ".tiff", ".tif")
 _ANCHOR_STYLE_H3_NOTE = ""
+_H3_PROMPT_REF_SLOTS = 9
+_H3_PROMPT_MAX_CHARS = 7000
+_PICTURE_TAG_RE = re.compile(r"<\s*picture[\s_\-]*(\d+)\s*>", re.I)
+_REF_TAG_RE = re.compile(r"<\s*ref[\s_\-]*(\d+)\s*>", re.I)
+_ANATOMY_GUARD_TEXT = (
+    "Each person has one head, two arms, two hands with five fingers on each hand, "
+    "and two legs with two feet. Limbs stay attached to the correct body and move "
+    "only with the person they belong to."
+)
+_SUBJECT_COUNT_FALLBACK_TEXT = (
+    "Only include the people explicitly described in the action. Do not invent "
+    "extra people, doubles, duplicate bodies, background performers, or extra faces."
+)
 _ANCHOR_STYLE_PRESETS = OrderedDict(
     [
         (
@@ -346,6 +359,47 @@ _ANCHOR_STYLE_PRESETS = OrderedDict(
         ),
     ]
 )
+_SOUNDSCAPE_PRESETS = OrderedDict(
+    [
+        (
+            "quiet interior",
+            "quiet indoor room tone, faint ventilation and distant household ambience",
+        ),
+        (
+            "rainy street",
+            "steady rain, wet pavement, distant traffic hum",
+        ),
+        (
+            "cafe",
+            "low room tone, faint glassware, cutlery, and muted conversation",
+        ),
+        (
+            "city night",
+            "distant traffic hum, occasional horn, night air",
+        ),
+        (
+            "forest",
+            "wind in leaves, distant birds, soft natural ambience",
+        ),
+        (
+            "industrial",
+            "large interior reverb, distant metal ticks, low machine hum",
+        ),
+        (
+            "silent",
+            "no dialogue, no vocals, only the natural ambient bed of the scene",
+        ),
+        ("custom", ""),
+    ]
+)
+
+
+def _soundscape_options():
+    return list(_SOUNDSCAPE_PRESETS.keys())
+
+
+def _soundscape_description(soundscape_name):
+    return _SOUNDSCAPE_PRESETS.get(soundscape_name, "")
 _LOAD_IMAGES_FOLDER_DEFAULT_STATE = {
     "version": 1,
     "folder": "",
@@ -920,6 +974,248 @@ def normalize_reference(value, picture_id=None, allow_image_fallback=True):
     )
 
 
+def _reference_text(value):
+    return " ".join(str(value or "").split()).strip()
+
+
+def _reference_sentence(value):
+    text = _reference_text(value)
+    if text and text[-1] not in ".!?":
+        text += "."
+    return text
+
+
+def _reference_name_keys(ref):
+    names = []
+    for key in ("name", "id"):
+        value = _reference_text(ref.get(key))
+        if value:
+            names.append(value)
+    for alias in ref.get("aliases") or []:
+        value = _reference_text(alias)
+        if value:
+            names.append(value)
+    seen = set()
+    out = []
+    for name in names:
+        key = name.lower()
+        if key in seen:
+            continue
+        seen.add(key)
+        out.append(name)
+    return out
+
+
+def _reference_image(ref):
+    if not isinstance(ref, dict):
+        return None
+    return ref.get("image")
+
+
+def _normalize_prompt_refs(raw_refs):
+    refs = []
+    for slot_number, raw in enumerate(raw_refs or (), 1):
+        if raw is None:
+            refs.append(None)
+            continue
+        try:
+            ref = normalize_reference(raw, picture_id=slot_number, allow_image_fallback=False)
+        except Exception:
+            refs.append(None)
+            continue
+        if _reference_image(ref) is None:
+            refs.append(None)
+        else:
+            refs.append(ref)
+    return refs
+
+
+def _explicit_reference_tags(text):
+    return sorted(
+        {
+            int(match.group(1))
+            for pattern in (_PICTURE_TAG_RE, _REF_TAG_RE)
+            for match in pattern.finditer(text or "")
+        }
+    )
+
+
+def _name_matches_reference(text, ref):
+    haystack = str(text or "")
+    for name in _reference_name_keys(ref):
+        if re.search(r"\b" + re.escape(name) + r"\b", haystack, re.I):
+            return True
+    return False
+
+
+def _selected_prompt_refs(action_prompt, refs):
+    selected = []
+    seen_slots = set()
+    for slot_number in _explicit_reference_tags(action_prompt):
+        if not (1 <= slot_number <= len(refs)):
+            continue
+        ref = refs[slot_number - 1]
+        if ref is None:
+            continue
+        selected.append((slot_number, ref))
+        seen_slots.add(slot_number)
+    for slot_number, ref in enumerate(refs, 1):
+        if slot_number in seen_slots or ref is None:
+            continue
+        if _name_matches_reference(action_prompt, ref):
+            selected.append((slot_number, ref))
+            seen_slots.add(slot_number)
+    return selected
+
+
+def _replace_reference_tags(text, picture_map):
+    def repl(match):
+        original = int(match.group(1))
+        compacted = picture_map.get(original)
+        if compacted is None:
+            return ""
+        return f"<Picture {compacted}>"
+
+    rewritten = _PICTURE_TAG_RE.sub(repl, str(text or ""))
+    rewritten = _REF_TAG_RE.sub(repl, rewritten)
+    return re.sub(r"[ \t]{2,}", " ", rewritten).strip()
+
+
+def _reference_fact_sentence(ref, label):
+    if ref.get("kind") != "character":
+        return ""
+    facts = dict(ref.get("facts") or {})
+    bits = []
+    aliases = [_reference_text(alias) for alias in (ref.get("aliases") or []) if _reference_text(alias)]
+    if aliases:
+        bits.append(f"also known as {aliases[0]}")
+    for key in ("gender", "nationality", "occupation"):
+        value = _reference_text(facts.get(key))
+        if value:
+            bits.append(value if key != "occupation" else f"works as {value}")
+    age = _parse_positive_int(facts.get("age"))
+    if age is not None:
+        bits.append(f"{age} years old")
+    feet = _reference_text(facts.get("height_feet"))
+    inches = _reference_text(facts.get("height_inches"))
+    if feet and inches:
+        bits.append(f"{feet} foot {inches} tall")
+    elif feet:
+        bits.append(f"{feet} foot tall")
+    accent = _reference_text(facts.get("accent"))
+    if accent:
+        bits.append(f"speaks with a {accent} accent")
+    if not bits:
+        return ""
+    return f"Character facts for {label}: " + ", ".join(bits) + "."
+
+
+def _reference_context(ref, compact_picture_number):
+    label_name = _reference_text(ref.get("name")) or _reference_text(ref.get("id")) or "this reference"
+    label = f"<Picture {compact_picture_number}> {label_name}"
+    parts = [_reference_sentence(_reference_summary(ref.get("kind"), label_name, compact_picture_number))]
+    description = _reference_sentence(ref.get("description"))
+    wardrobe = _reference_sentence(ref.get("wardrobe"))
+    general = _reference_sentence(ref.get("general"))
+    facts = _reference_fact_sentence(ref, label)
+    if ref.get("kind") == "location":
+        if description:
+            parts.append(f"Location context for {label}: {description}")
+        if general:
+            parts.append(f"Location notes for {label}: {general}")
+    else:
+        if facts:
+            parts.append(facts)
+        if description:
+            parts.append(f"Persistent appearance for {label}: {description}")
+        if wardrobe:
+            parts.append(f"Persistent wardrobe/style for {label}: {wardrobe}")
+        if general:
+            parts.append(f"Character notes for {label}: {general}")
+    return " ".join(part for part in parts if part).strip()
+
+
+def _subject_count_guard_text(selected_refs):
+    character_labels = []
+    seen_characters = set()
+    for picture_number, (_slot, ref) in enumerate(selected_refs or (), 1):
+        if ref.get("kind") != "character":
+            continue
+        name = _reference_text(ref.get("name")) or _reference_text(ref.get("id"))
+        key = (_reference_text(ref.get("id")) or name or f"picture-{picture_number}").lower()
+        if key in seen_characters:
+            continue
+        seen_characters.add(key)
+        label = f"<Picture {picture_number}>"
+        if name:
+            label = f"{label} {name}"
+        character_labels.append(label)
+    if not character_labels:
+        return _SUBJECT_COUNT_FALLBACK_TEXT
+    if len(character_labels) == 1:
+        return (
+            f"The shot contains exactly one named character: {character_labels[0]}. "
+            "Do not create any extra people, doubles, duplicate bodies, background "
+            "performers, or extra faces."
+        )
+    return (
+        f"The shot contains exactly {len(character_labels)} named characters: "
+        + ", ".join(character_labels)
+        + ". Do not create any extra people, doubles, duplicate bodies, background "
+          "performers, or extra faces."
+    )
+
+
+def _append_prompt_section(parts, label, text):
+    clean = _reference_text(text)
+    if clean:
+        parts.append(f"{label}: {clean}")
+
+
+def curate_h3_prompt(
+    action_prompt,
+    anchor="",
+    soundscape="",
+    refs=(),
+    anatomy_guard="auto",
+    subject_count_guard="auto",
+):
+    normalized_refs = _normalize_prompt_refs(refs)
+    selected = _selected_prompt_refs(action_prompt, normalized_refs)
+    picture_map = {slot_number: index for index, (slot_number, _ref) in enumerate(selected, 1)}
+    action = _replace_reference_tags(action_prompt, picture_map)
+
+    prompt_parts = []
+    _append_prompt_section(prompt_parts, "Scene anchor", anchor)
+    if selected:
+        contexts = [_reference_context(ref, picture_number) for picture_number, (_slot, ref) in enumerate(selected, 1)]
+        _append_prompt_section(prompt_parts, "Reference context", " ".join(contexts))
+    _append_prompt_section(prompt_parts, "Action", action)
+    if anatomy_guard == "on" or (anatomy_guard == "auto" and any(ref.get("kind") == "character" for _slot, ref in selected)):
+        _append_prompt_section(prompt_parts, "Anatomy guard", _ANATOMY_GUARD_TEXT)
+    if subject_count_guard == "on" or (
+        subject_count_guard == "auto" and any(ref.get("kind") == "character" for _slot, ref in selected)
+    ):
+        _append_prompt_section(prompt_parts, "Subject count guard", _subject_count_guard_text(selected))
+    _append_prompt_section(prompt_parts, "overall_soundscape", soundscape)
+
+    prompt = "\n\n".join(prompt_parts).strip()
+    if len(prompt) > _H3_PROMPT_MAX_CHARS:
+        prompt = prompt[: _H3_PROMPT_MAX_CHARS - 3].rstrip() + "..."
+    images = [_reference_image(ref) for _slot, ref in selected]
+    images.extend([None] * (_H3_PROMPT_REF_SLOTS - len(images)))
+    debug = (
+        f"Selected {len(selected)} reference(s): "
+        + ", ".join(
+            f"input {slot}-><Picture {index}> {_reference_text(ref.get('name')) or ref.get('id')}"
+            for index, (slot, ref) in enumerate(selected, 1)
+        )
+        if selected
+        else "Selected 0 references."
+    )
+    return (prompt, *images[:_H3_PROMPT_REF_SLOTS], len(selected), debug)
+
+
 def _parse_positive_int(value):
     text = str(value or "").strip()
     if not text:
@@ -1042,6 +1338,65 @@ def _build_character_wardrobe_text(wardrobe, character_id, name, alias):
     return text
 
 
+def _label_for_location(name, location_id):
+    return _normalize_free_text(name) or _normalize_free_text(location_id) or "the location"
+
+
+def _build_location_helper_text(
+    primary_picture_id,
+    secondary_picture_id,
+    location_id,
+    name,
+    alias,
+    description,
+    general,
+):
+    primary_picture = int(primary_picture_id)
+    secondary_picture = int(secondary_picture_id)
+    location_name = _normalize_free_text(name)
+    location_id = _normalize_free_text(location_id)
+    alias = _normalize_free_text(alias)
+    description = _ensure_sentence(description)
+    general = _ensure_sentence(general)
+    location_label = _label_for_location(location_name, location_id)
+
+    if location_name:
+        first_line = (
+            f"<Picture {primary_picture}> and <Picture {secondary_picture}> reference "
+            f"the same location called {location_name}."
+        )
+    elif location_id:
+        first_line = (
+            f"<Picture {primary_picture}> and <Picture {secondary_picture}> reference "
+            f'the same location with ID "{location_id}".'
+        )
+    else:
+        first_line = (
+            f"<Picture {primary_picture}> and <Picture {secondary_picture}> reference "
+            "the same location."
+        )
+
+    lines = [
+        first_line,
+        f"<Picture {primary_picture}> is the primary wide/environment reference for {location_label}.",
+        f"<Picture {secondary_picture}> is the secondary detail/angle reference for {location_label}.",
+    ]
+
+    facts = []
+    if alias:
+        facts.append(f"is also known as {alias}")
+    if description:
+        facts.append(description)
+
+    if facts:
+        lines.append(f"{location_label} {', '.join(facts)}")
+
+    if general:
+        lines.append(general)
+
+    return "\n".join(lines)
+
+
 class DumasImageCompareNode:
     DESCRIPTION = (
         "Dumas Image Compare shows the difference between two images directly on "
@@ -1604,6 +1959,303 @@ class DumasH3PlanExtractSceneImagesNode:
         return (passthrough_plan, *images, _connected_image_count(images))
 
 
+class DumasCharacterHelperNode:
+    DESCRIPTION = (
+        "Build a general character reference prompt and wardrobe sheet from two "
+        "IMAGE sockets plus simple identity fields, while passing both images "
+        "through unchanged."
+    )
+    RETURN_TYPES = ("IMAGE", "IMAGE", "STRING", "STRING", _REFERENCE_TYPE, _REFERENCE_TYPE)
+    RETURN_NAMES = ("image1", "image2", "reference_prompt", "wardrobe", "reference1", "reference2")
+    FUNCTION = "build_character_text"
+    CATEGORY = "Dumas/MiniMax"
+
+    @classmethod
+    def INPUT_TYPES(cls):
+        return {
+            "required": {
+                "image1": ("IMAGE", {"tooltip": "Primary image to pass through and describe."}),
+                "image2": ("IMAGE", {"tooltip": "Secondary image to pass through and describe."}),
+                "image1_picture_id": (
+                    ["1", "2", "3", "4", "5", "6", "7", "8", "9"],
+                    {
+                        "default": "1",
+                        "tooltip": "Picture number to mention for image1 in the reference prompt.",
+                    },
+                ),
+                "image2_picture_id": (
+                    ["1", "2", "3", "4", "5", "6", "7", "8", "9"],
+                    {
+                        "default": "2",
+                        "tooltip": "Picture number to mention for image2 in the reference prompt.",
+                    },
+                ),
+                "character_id": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional character ID string to include in the output text.",
+                    },
+                ),
+                "name": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Character name used in the main reference sentences.",
+                    },
+                ),
+                "alias": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional alternate name, codename, or nickname.",
+                    },
+                ),
+                "gender": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional gender field for non-visual character facts.",
+                    },
+                ),
+                "age": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional numeric age. Invalid values are omitted.",
+                    },
+                ),
+                "nationality": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional nationality, origin, or cultural background.",
+                    },
+                ),
+                "occupation": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional job, role, or function that is not visually obvious.",
+                    },
+                ),
+                "height_feet": (
+                    ["", "3", "4", "5", "6", "7", "8"],
+                    {
+                        "default": "",
+                        "tooltip": "Optional feet component for the character's height.",
+                    },
+                ),
+                "height_inches": (
+                    ["", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11"],
+                    {
+                        "default": "",
+                        "tooltip": "Optional inches component for the character's height.",
+                    },
+                ),
+                "accent": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional short accent description.",
+                    },
+                ),
+                "general": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": True,
+                        "tooltip": "Optional non-clothing details appended as the last sentence of the reference prompt.",
+                    },
+                ),
+                "wardrobe": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": True,
+                        "tooltip": "Optional wardrobe/channel text. Plain clothing lists are auto-wrapped as 'Name = ...' when a name, alias, or character ID is present.",
+                    },
+                ),
+            }
+        }
+
+    def build_character_text(
+        self,
+        image1,
+        image2,
+        image1_picture_id,
+        image2_picture_id,
+        character_id,
+        name,
+        alias,
+        gender,
+        age,
+        nationality,
+        occupation,
+        height_feet,
+        height_inches,
+        accent,
+        general,
+        wardrobe,
+    ):
+        text = _build_character_helper_text(
+            image1_picture_id,
+            image2_picture_id,
+            character_id,
+            name,
+            alias,
+            gender,
+            age,
+            nationality,
+            occupation,
+            height_feet,
+            height_inches,
+            accent,
+            general,
+        )
+        wardrobe_text = _build_character_wardrobe_text(
+            wardrobe,
+            character_id,
+            name,
+            alias,
+        )
+        facts = {
+            "gender": _normalize_free_text(gender),
+            "age": str(_parse_positive_int(age) or ""),
+            "nationality": _normalize_free_text(nationality),
+            "occupation": _normalize_free_text(occupation),
+            "height_feet": str(height_feet or "").strip(),
+            "height_inches": str(height_inches or "").strip(),
+            "accent": _normalize_free_text(accent),
+        }
+        common = {
+            "kind": "character",
+            "explicit_id": character_id,
+            "name": name,
+            "aliases": alias,
+            "description": general,
+            "wardrobe": wardrobe,
+            "general": general,
+            "facts": facts,
+        }
+        reference1 = make_reference(
+            image=image1,
+            summary="Primary full-body character reference.",
+            **common,
+        )
+        reference2 = make_reference(
+            image=image2,
+            summary="Secondary facial character reference.",
+            **common,
+        )
+        return (image1, image2, text, wardrobe_text, reference1, reference2)
+
+
+class DumasLocationHelperNode:
+    DESCRIPTION = (
+        "Build a general location reference prompt from two IMAGE sockets plus "
+        "simple environment fields, while passing both images through unchanged."
+    )
+    RETURN_TYPES = ("IMAGE", "IMAGE", "STRING")
+    RETURN_NAMES = ("image1", "image2", "reference_prompt")
+    FUNCTION = "build_location_text"
+    CATEGORY = "Dumas/MiniMax"
+
+    @classmethod
+    def INPUT_TYPES(cls):
+        return {
+            "required": {
+                "image1": ("IMAGE", {"tooltip": "Primary location image to pass through and describe."}),
+                "image2": ("IMAGE", {"tooltip": "Secondary location image to pass through and describe."}),
+                "image1_picture_id": (
+                    ["1", "2", "3", "4", "5", "6", "7", "8", "9"],
+                    {
+                        "default": "1",
+                        "tooltip": "Picture number to mention for image1 in the reference prompt.",
+                    },
+                ),
+                "image2_picture_id": (
+                    ["1", "2", "3", "4", "5", "6", "7", "8", "9"],
+                    {
+                        "default": "2",
+                        "tooltip": "Picture number to mention for image2 in the reference prompt.",
+                    },
+                ),
+                "location_id": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional location ID string to include in the output text.",
+                    },
+                ),
+                "name": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Location name used in the main reference sentences.",
+                    },
+                ),
+                "alias": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": False,
+                        "tooltip": "Optional alternate name, label, or area name.",
+                    },
+                ),
+                "description": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": True,
+                        "tooltip": "Persistent environment, layout, and atmosphere description.",
+                    },
+                ),
+                "general": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": True,
+                        "tooltip": "Optional extra notes appended as the last sentence of the reference prompt.",
+                    },
+                ),
+            }
+        }
+
+    def build_location_text(
+        self,
+        image1,
+        image2,
+        image1_picture_id,
+        image2_picture_id,
+        location_id,
+        name,
+        alias,
+        description,
+        general,
+    ):
+        text = _build_location_helper_text(
+            image1_picture_id,
+            image2_picture_id,
+            location_id,
+            name,
+            alias,
+            description,
+            general,
+        )
+        return (image1, image2, text)
+
+
 class DumasCharacterReferenceNode:
     DESCRIPTION = (
         "Build one structured REFERENCE object for a character so H3 can carry "
@@ -1836,6 +2488,166 @@ class DumasLocationReferenceNode:
         )
 
 
+class DumasSoundscapeHelperNode:
+    DESCRIPTION = (
+        "Choose a soundscape preset, auto-fill its editable description, and pass "
+        "the final soundscape text downstream for MiniMax H3 prompts."
+    )
+    RETURN_TYPES = ("STRING",)
+    RETURN_NAMES = ("soundscape",)
+    FUNCTION = "build_soundscape"
+    CATEGORY = "Dumas/MiniMax"
+
+    @classmethod
+    def INPUT_TYPES(cls):
+        default_soundscape = "quiet interior"
+        return {
+            "required": {
+                "soundscape": (
+                    _soundscape_options(),
+                    {
+                        "default": default_soundscape,
+                        "tooltip": "Preset title used to seed the editable soundscape description.",
+                    },
+                ),
+                "soundscape_description": (
+                    "STRING",
+                    {
+                        "default": _soundscape_description(default_soundscape),
+                        "multiline": True,
+                        "tooltip": (
+                            "Editable environmental audio description. Whatever text is here "
+                            "is what the node outputs to the soundscape socket."
+                        ),
+                    },
+                ),
+            }
+        }
+
+    def build_soundscape(self, soundscape, soundscape_description):
+        text = str(soundscape_description or "").strip()
+        if not text:
+            text = _soundscape_description(soundscape)
+        return (text,)
+
+
+class DumasH3PromptCuratorNode:
+    DESCRIPTION = (
+        "Curate one MiniMax H3 prompt from an action textbox, anchor text, "
+        "soundscape text, and up to nine structured references. References are "
+        "compacted so only mentioned names, aliases, or explicit <Picture N>/<refN> "
+        "tags are sent onward."
+    )
+    RETURN_TYPES = ("STRING",) + ("IMAGE",) * _H3_PROMPT_REF_SLOTS + ("INT", "STRING")
+    RETURN_NAMES = (
+        "prompt",
+        "ref_image_1",
+        "ref_image_2",
+        "ref_image_3",
+        "ref_image_4",
+        "ref_image_5",
+        "ref_image_6",
+        "ref_image_7",
+        "ref_image_8",
+        "ref_image_9",
+        "reference_count",
+        "debug",
+    )
+    FUNCTION = "curate_prompt"
+    CATEGORY = "Dumas/MiniMax"
+
+    @classmethod
+    def INPUT_TYPES(cls):
+        optional = {
+            "anchor": (
+                "STRING",
+                {
+                    "forceInput": True,
+                    "tooltip": "Optional anchor/style text, usually from Dumas Anchor Style.",
+                },
+            ),
+            "soundscape": (
+                "STRING",
+                {
+                    "forceInput": True,
+                    "tooltip": "Optional soundscape text, usually from Dumas Soundscape Helper.",
+                },
+            ),
+        }
+        for slot in range(1, _H3_PROMPT_REF_SLOTS + 1):
+            optional[f"ref_{slot}"] = (
+                _REFERENCE_TYPE,
+                {
+                    "tooltip": (
+                        f"Optional structured reference {slot}. The curator only outputs "
+                        "it if the action prompt mentions its name/alias or an explicit "
+                        f"<Picture {slot}>/<ref{slot}> tag."
+                    )
+                },
+            )
+        return {
+            "required": {
+                "action_prompt": (
+                    "STRING",
+                    {
+                        "default": "",
+                        "multiline": True,
+                        "tooltip": (
+                            "Write the final shot action here using character/location names. "
+                            "Mention a reference by name, alias, <Picture N>, or <refN> to use it."
+                        ),
+                    },
+                ),
+                "anatomy_guard": (
+                    ["auto", "on", "off"],
+                    {
+                        "default": "on",
+                        "tooltip": (
+                            "Add the anatomy guard. Auto adds it when a character reference is used."
+                        ),
+                    },
+                ),
+                "subject_count_guard": (
+                    ["auto", "on", "off"],
+                    {
+                        "default": "auto",
+                        "tooltip": (
+                            "Add a guard against extra people, duplicate bodies, or extra faces. "
+                            "Auto adds it when a character reference is used."
+                        ),
+                    },
+                ),
+            },
+            "optional": optional,
+        }
+
+    def curate_prompt(
+        self,
+        action_prompt,
+        anatomy_guard,
+        subject_count_guard,
+        anchor="",
+        soundscape="",
+        ref_1=None,
+        ref_2=None,
+        ref_3=None,
+        ref_4=None,
+        ref_5=None,
+        ref_6=None,
+        ref_7=None,
+        ref_8=None,
+        ref_9=None,
+    ):
+        return curate_h3_prompt(
+            action_prompt,
+            anchor=anchor,
+            soundscape=soundscape,
+            refs=(ref_1, ref_2, ref_3, ref_4, ref_5, ref_6, ref_7, ref_8, ref_9),
+            anatomy_guard=anatomy_guard,
+            subject_count_guard=subject_count_guard,
+        )
+
+
 class DumasAnchorStyleNode:
     DESCRIPTION = (
         "Choose an anchor-style preset, auto-fill its full description, and pass "
@@ -1887,9 +2699,12 @@ NODE_CLASS_MAPPINGS = {
     "DumasH3PlanExtractSceneImages": DumasH3PlanExtractSceneImagesNode,
     "DumasCharacterReference": DumasCharacterReferenceNode,
     "DumasLocationReference": DumasLocationReferenceNode,
+    "DumasSoundscapeHelper": DumasSoundscapeHelperNode,
+    "DumasH3PromptCurator": DumasH3PromptCuratorNode,
     "DumasAnchorStyle": DumasAnchorStyleNode,
-    "DumasCharacterHelper": DumasCharacterReferenceNode,
+    "DumasCharacterHelper": DumasCharacterHelperNode,
-    "DumasH3CharacterHelper": DumasCharacterReferenceNode,
+    "DumasLocationHelper": DumasLocationHelperNode,
+    "DumasH3CharacterHelper": DumasCharacterHelperNode,
 }
 
 NODE_DISPLAY_NAME_MAPPINGS = {
@@ -1900,7 +2715,10 @@ NODE_DISPLAY_NAME_MAPPINGS = {
     "DumasH3PlanExtractSceneImages": "Dumas H3 Plan Extract Scene Images",
     "DumasCharacterReference": "Dumas Character Reference",
     "DumasLocationReference": "Dumas Location Reference",
+    "DumasSoundscapeHelper": "Dumas Soundscape Helper",
+    "DumasH3PromptCurator": "Dumas H3 Prompt Curator",
     "DumasAnchorStyle": "Dumas Anchor Style",
-    "DumasCharacterHelper": "Dumas Character Reference",
+    "DumasCharacterHelper": "Dumas Character Helper",
-    "DumasH3CharacterHelper": "Dumas Character Reference",
+    "DumasLocationHelper": "Dumas Location Helper",
+    "DumasH3CharacterHelper": "Dumas Character Helper",
 }

dumas_json_nodes.py

@@ -277,7 +277,14 @@ class DumasJSONStringToObjectNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_string": ("STRING", {"multiline": True}),
+                "json_string": (
+                    "STRING",
+                    {
+                        "multiline": True,
+                        "default": '{\n  "shots": [\n    {\n      "prompt": "Francine stands by the window."\n    }\n  ]\n}',
+                        "tooltip": "Raw JSON text to parse into a structured JSON object."
+                    },
+                ),
             }
         }
 
@@ -299,7 +306,14 @@ class DumasStripIterationSuffixNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "filename": ("STRING", {"default": "", "multiline": False}),
+                "filename": (
+                    "STRING",
+                    {
+                        "default": "francine_pose_final.png",
+                        "multiline": False,
+                        "tooltip": "Filename to normalize by removing everything after the first underscore in the stem."
+                    },
+                ),
             }
         }
 
@@ -316,7 +330,14 @@ class DumasSlugifyStringNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "text": ("STRING", {"default": "", "multiline": False}),
+                "text": (
+                    "STRING",
+                    {
+                        "default": "Francine Coffee Shop",
+                        "multiline": False,
+                        "tooltip": "Text to slugify into lowercase ASCII words joined with hyphens."
+                    },
+                ),
             }
         }
 
@@ -334,8 +355,8 @@ class DumasJSONObjectToStringNode:
         return {
             "required": {
                 "json_object": ("JSON",),
-                "pretty": ("BOOLEAN", {"default": True}),
+                "pretty": ("BOOLEAN", {"default": True, "tooltip": "Pretty-print the JSON with indentation."}),
-                "sort_keys": ("BOOLEAN", {"default": False}),
+                "sort_keys": ("BOOLEAN", {"default": False, "tooltip": "Sort object keys alphabetically before serializing."}),
             }
         }
 
@@ -355,7 +376,7 @@ class DumasJSONGetValueNode:
         return {
             "required": {
                 "json_object": ("JSON",),
-                "path": ("STRING", {"default": "", "multiline": False}),
+                "path": ("STRING", {"default": "shots.0.prompt", "multiline": False, "tooltip": "Dot-path to read, such as 'shots.0.prompt'."}),
             }
         }
 
@@ -373,8 +394,8 @@ class DumasJSONSetValueNode:
         return {
             "required": {
                 "json_object": ("JSON",),
-                "path": ("STRING", {"default": "", "multiline": False}),
+                "path": ("STRING", {"default": "shots.0.prompt", "multiline": False, "tooltip": "Dot-path to write, such as 'shots.0.prompt' or 'shots.1.duration'."}),
-                "value_json": ("STRING", {"multiline": True, "default": "null"}),
+                "value_json": ("STRING", {"multiline": True, "default": '"Francine stands by the window."', "tooltip": "JSON value to store at the path. Must be valid JSON, so strings need quotes."}),
             }
         }
 
@@ -398,7 +419,7 @@ class DumasJSONHasKeyNode:
         return {
             "required": {
                 "json_object": ("JSON",),
-                "path": ("STRING", {"default": "", "multiline": False}),
+                "path": ("STRING", {"default": "shots.0.prompt", "multiline": False, "tooltip": "Dot-path to test for existence."}),
             }
         }
 
@@ -416,7 +437,7 @@ class DumasJSONRemoveKeyNode:
         return {
             "required": {
                 "json_object": ("JSON",),
-                "path": ("STRING", {"default": "", "multiline": False}),
+                "path": ("STRING", {"default": "shots.0.prompt", "multiline": False, "tooltip": "Dot-path to remove from the object."}),
             }
         }
 
@@ -434,7 +455,7 @@ class DumasJSONPickFieldsNode:
         return {
             "required": {
                 "json_object": ("JSON",),
-                "paths": ("STRING", {"multiline": True, "default": ""}),
+                "paths": ("STRING", {"multiline": True, "default": "shots.0.prompt\nshots.0.duration", "tooltip": "One dot-path per line. Only those fields are copied into the output object."}),
             }
         }
 
@@ -463,8 +484,8 @@ class DumasJSONMergeObjectsNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "base_object": ("JSON",),
+                "base_object": ("JSON", {"tooltip": "Base JSON object to start from."}),
-                "overlay_object": ("JSON",),
+                "overlay_object": ("JSON", {"tooltip": "Overlay JSON object whose keys replace or merge into the base object."}),
             }
         }
 
@@ -482,7 +503,7 @@ class DumasJSONKeysNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_object": ("JSON",),
+                "json_object": ("JSON", {"tooltip": "JSON object whose top-level keys should be listed."}),
             }
         }
 
@@ -502,7 +523,7 @@ class DumasJSONArrayLengthNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_array": ("JSON",),
+                "json_array": ("JSON", {"tooltip": "JSON array whose length should be measured."}),
             }
         }
 
@@ -521,8 +542,8 @@ class DumasJSONArrayAppendNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_array": ("JSON",),
+                "json_array": ("JSON", {"tooltip": "JSON array to append to."}),
-                "value_json": ("STRING", {"multiline": True, "default": "null"}),
+                "value_json": ("STRING", {"multiline": True, "default": '{"prompt":"Francine looks toward the door."}', "tooltip": "JSON value to append. Must be valid JSON."}),
             }
         }
 
@@ -548,10 +569,10 @@ class DumasJSONArraySliceNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_array": ("JSON",),
+                "json_array": ("JSON", {"tooltip": "JSON array to slice."}),
-                "start": ("INT", {"default": 0, "step": 1}),
+                "start": ("INT", {"default": 0, "step": 1, "tooltip": "Zero-based start index."}),
-                "end": ("INT", {"default": 0, "step": 1}),
+                "end": ("INT", {"default": 0, "step": 1, "tooltip": "Zero-based end index. Use 0 to mean 'to the end'."}),
-                "step": ("INT", {"default": 1, "step": 1, "min": 1}),
+                "step": ("INT", {"default": 1, "step": 1, "min": 1, "tooltip": "Slice step size."}),
             }
         }
 
@@ -572,9 +593,9 @@ class DumasJSONArrayIteratorNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_input": ("JSON",),
+                "json_input": ("JSON", {"tooltip": "JSON array to iterate over."}),
-                "index": ("INT", {"default": 0, "min": 0, "step": 1}),
+                "index": ("INT", {"default": 0, "min": 0, "step": 1, "tooltip": "Current zero-based index."}),
-                "mode": (["fixed", "incr", "decr"], {"default": "fixed"}),
+                "mode": (["fixed", "incr", "decr"], {"default": "fixed", "tooltip": "Keep the index fixed, increment it, or decrement it before reading."}),
             }
         }
 
@@ -600,9 +621,9 @@ class DumasJSONObjectIteratorNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_input": ("JSON",),
+                "json_input": ("JSON", {"tooltip": "JSON object whose key/value pairs should be iterated in insertion order."}),
-                "index": ("INT", {"default": 0, "min": 0, "step": 1}),
+                "index": ("INT", {"default": 0, "min": 0, "step": 1, "tooltip": "Current zero-based index into the object's items."}),
-                "mode": (["fixed", "incr", "decr"], {"default": "fixed"}),
+                "mode": (["fixed", "incr", "decr"], {"default": "fixed", "tooltip": "Keep the index fixed, increment it, or decrement it before reading."}),
             }
         }
 
@@ -628,7 +649,7 @@ class DumasJSONFlattenNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "json_input": ("JSON",),
+                "json_input": ("JSON", {"tooltip": "Nested JSON value to flatten into dot-path keys."}),
             }
         }
 
@@ -645,7 +666,7 @@ class DumasJSONUnflattenNode:
     def INPUT_TYPES(cls):
         return {
             "required": {
-                "flat_json_object": ("JSON",),
+                "flat_json_object": ("JSON", {"tooltip": "Flat JSON object whose keys are dot-paths to rebuild into nested JSON."}),
             }
         }
 

js/h3_longvideos/index.js

@@ -53,11 +53,10 @@ const GROUPS = [
   },
   {
     id: "finish",
-    label: "Upscale/Detail",
+    label: "Upscale",
     defaultCollapsed: true,
     widgets: [
       "upscale", "upscale_model", "upscale_target_short_edge", "upscale_batch",
-      "detail_pass", "detail_sampler_name", "detail_scheduler", "detail_steps", "detail_denoise",
     ],
   },
   {

tests/test_dumas_h3_longvideos.py

@@ -24,6 +24,7 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 "PIL.Image",
                 "folder_paths",
                 "dumas_image_nodes",
+                "dumas_h3_latent_upscale",
                 "dumas_h3_longvideos",
             )
         }
@@ -207,7 +208,7 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 "retry_elapsed": 1.2,
                 "attempts": 2,
                 "sample": 8.0,
-                "detail_sample": 0.5,
+                "latent_upscale_sample": 0.5,
                 "decode_video": 2.1,
                 "decode_audio": 0.4,
                 "cleanup": 0.2,
@@ -230,11 +231,11 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
         self.assertIn("decode audio 0.7s", note)
         self.assertIn("cleanup 0.3s", note)
         self.assertIn("retry elapsed 1.2s", note)
-        self.assertIn("detail 0.5s", note)
+        self.assertIn("latent upscale 0.5s", note)
         self.assertIn("retries 1", note)
         self.assertIn("slowest shot 1 12.4s", note)
 
-    def test_detail_pass_refines_video_but_preserves_audio(self):
+    def test_latent_upscale_refines_video_but_preserves_audio(self):
         class FakeTensor:
             def __init__(self, name):
                 self.name = name
@@ -263,6 +264,8 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
         original_decode_video = self.module._decode_video
         original_decode_audio = self.module._decode_audio
         original_cleanup = self.module._deep_cleanup
+        original_upscale = self.module._upscale_latent_video
+        original_copy_sample = self.module._copy_sample_latent
         original_nested = getattr(self.module.comfy.nested_tensor, "NestedTensor", None)
         try:
             self.module.comfy.nested_tensor.NestedTensor = FakeNestedTensor
@@ -277,6 +280,8 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 {"samples": FakeNestedTensor((FakeTensor("basev"), FakeTensor("basea")))},
             )
             self.module._evict_all_but = lambda *_args, **_kwargs: None
+            self.module._upscale_latent_video = lambda video, param: (FakeTensor("upv"), 8, 16)
+            self.module._copy_sample_latent = lambda sampled: sampled["samples"].unbind()
             self.module._decode_video = lambda _vae, out_latent, *_args, **_kwargs: out_latent
             self.module._decode_audio = lambda _vae, out_latent: out_latent
             self.module._deep_cleanup = lambda: None
@@ -298,18 +303,25 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 tiled=False,
                 sa=(123, 20, 1.0, "res_multistep", "simple", 1.0),
                 handoff=None,
-                detail_pass=True,
+                latent_upscale_param={
-                detail_sampler_name="euler",
+                    "mode": "model",
-                detail_scheduler="beta",
+                    "model_name": "upscale.safetensors",
-                detail_steps=5,
+                    "device": "cpu",
-                detail_denoise=0.4,
+                    "precision": "fp16",
+                    "sampler_name": "euler_ancestral",
+                    "scheduler": "simple",
+                    "steps": 2,
+                    "denoise": 0.4,
+                    "megapixels": 1.5,
+                },
             )
 
             self.assertEqual(len(calls), 2)
             self.assertIsNot(calls[1][0][8], first_out)
-            self.assertIs(calls[1][0][8]["samples"], first_out["samples"])
+            self.assertEqual(calls[1][0][8]["samples"].unbind()[0].name, "upv")
-            self.assertEqual(calls[1][0][4], "euler")
+            self.assertEqual(calls[1][0][2], 2)
-            self.assertEqual(calls[1][0][5], "beta")
+            self.assertEqual(calls[1][0][4], "euler_ancestral")
+            self.assertEqual(calls[1][0][5], "simple")
             self.assertAlmostEqual(calls[1][1]["denoise"], 0.4)
             self.assertEqual(result[1], first_out)
             self.assertEqual(result[2][0].name, "v2")
@@ -323,12 +335,14 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             self.module._decode_video = original_decode_video
             self.module._decode_audio = original_decode_audio
             self.module._deep_cleanup = original_cleanup
+            self.module._upscale_latent_video = original_upscale
+            self.module._copy_sample_latent = original_copy_sample
             if original_nested is None:
                 delattr(self.module.comfy.nested_tensor, "NestedTensor")
             else:
                 self.module.comfy.nested_tensor.NestedTensor = original_nested
 
-    def test_detail_pass_decodes_audio_before_video_and_cleans_up(self):
+    def test_latent_upscale_decodes_audio_before_video_and_cleans_up(self):
         class FakeTensor:
             def __init__(self, name):
                 self.name = name
@@ -348,6 +362,7 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 return self._parts
 
         order = []
+        build_calls = []
         first_out = {"samples": FakeNestedTensor((FakeTensor("v1"), FakeTensor("a1")))}
         second_out = {"samples": FakeNestedTensor((FakeTensor("v2"), FakeTensor("a2")))}
 
@@ -357,12 +372,16 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
         original_decode_video = self.module._decode_video
         original_decode_audio = self.module._decode_audio
         original_cleanup = self.module._deep_cleanup
+        original_upscale = self.module._upscale_latent_video
+        original_copy_sample = self.module._copy_sample_latent
+        original_unload = getattr(self.module.mm, "unload_model_and_clones", None)
+        original_unload_all = self.module.mm.unload_all_models
         original_nested = getattr(self.module.comfy.nested_tensor, "NestedTensor", None)
         try:
             self.module.comfy.nested_tensor.NestedTensor = FakeNestedTensor
 
             def common_ksampler(*args, **kwargs):
-                order.append("detail_sample" if len(order) else "sample")
+                order.append("latent_upscale_sample" if len(order) else "sample")
                 return (first_out if len([x for x in order if x.endswith("sample")]) == 1 else second_out,)
 
             def decode_audio(_vae, out_latent):
@@ -379,12 +398,31 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             def cleanup():
                 order.append("cleanup")
 
+            def unload_model_and_clones(*_args, **_kwargs):
+                order.append("unload_h3_failed")
+                raise RuntimeError("model wrapper does not expose clone metadata")
+
+            def unload_all_models(*_args, **_kwargs):
+                order.append("unload_all")
+
+            def upscale_latent_video(video, param):
+                order.append("upscale")
+                return FakeTensor("upv"), 8, 16
+
+            def build_conditioning(*_args, **_kwargs):
+                build_calls.append(True)
+                return (
+                    [["cond", {}]],
+                    {"samples": FakeNestedTensor((FakeTensor("basev"), FakeTensor("basea")))},
+                )
+
             self.module.nodes.common_ksampler = common_ksampler
-            self.module._build_shot_conditioning = lambda *_args, **_kwargs: (
+            self.module._build_shot_conditioning = build_conditioning
-                "cond",
-                {"samples": FakeNestedTensor((FakeTensor("basev"), FakeTensor("basea")))},
-            )
             self.module._evict_all_but = lambda *_args, **_kwargs: None
+            self.module.mm.unload_model_and_clones = unload_model_and_clones
+            self.module.mm.unload_all_models = unload_all_models
+            self.module._upscale_latent_video = upscale_latent_video
+            self.module._copy_sample_latent = lambda sampled: sampled["samples"].unbind()
             self.module._decode_video = decode_video
             self.module._decode_audio = decode_audio
             self.module._deep_cleanup = cleanup
@@ -406,17 +444,25 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 tiled=False,
                 sa=(123, 20, 1.0, "res_multistep", "simple", 1.0),
                 handoff=None,
-                detail_pass=True,
+                latent_upscale_param={
-                detail_sampler_name="euler",
+                    "mode": "model",
-                detail_scheduler="beta",
+                    "model_name": "upscale.safetensors",
-                detail_steps=5,
+                    "device": "cuda",
-                detail_denoise=0.4,
+                    "precision": "fp16",
+                    "sampler_name": "euler_ancestral",
+                    "scheduler": "simple",
+                    "steps": 2,
+                    "denoise": 0.4,
+                    "megapixels": 1.5,
+                },
             )
 
             self.assertEqual(order[0], "sample")
-            self.assertEqual(order[1], "detail_sample")
+            self.assertLess(order.index("unload_all"), order.index("upscale"))
+            self.assertLess(order.index("upscale"), order.index("latent_upscale_sample"))
             self.assertLess(order.index("audio"), order.index("video"))
             self.assertEqual(order[-1], "cleanup")
+            self.assertEqual(len(build_calls), 1)
         finally:
             self.module.nodes.common_ksampler = original_common_ksampler
             self.module._build_shot_conditioning = original_build
@@ -424,12 +470,25 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             self.module._decode_video = original_decode_video
             self.module._decode_audio = original_decode_audio
             self.module._deep_cleanup = original_cleanup
+            self.module._upscale_latent_video = original_upscale
+            self.module._copy_sample_latent = original_copy_sample
+            if original_unload is None:
+                delattr(self.module.mm, "unload_model_and_clones")
+            else:
+                self.module.mm.unload_model_and_clones = original_unload
+            self.module.mm.unload_all_models = original_unload_all
             if original_nested is None:
                 delattr(self.module.comfy.nested_tensor, "NestedTensor")
             else:
                 self.module.comfy.nested_tensor.NestedTensor = original_nested
 
-    def test_detail_pass_treats_falsey_strings_as_disabled(self):
+    def test_latent_refine_tiles_do_not_rebuild_conditioning(self):
+        source = inspect.getsource(self.module.H3LongVideos._render)
+        tile_branch = source[source.index("for col_index, c0 in enumerate(cols):"):]
+        self.assertIn("_crop_conditioning_to_tile", tile_branch)
+        self.assertNotIn("_build_shot_conditioning(", tile_branch)
+
+    def test_latent_upscale_off_skips_second_pass(self):
         calls = []
         original_common_ksampler = self.module.nodes.common_ksampler
         original_build = self.module._build_shot_conditioning
@@ -437,6 +496,8 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
         original_decode_video = self.module._decode_video
         original_decode_audio = self.module._decode_audio
         original_cleanup = self.module._deep_cleanup
+        original_upscale = self.module._upscale_latent_video
+        original_copy_sample = self.module._copy_sample_latent
         try:
             self.module.nodes.common_ksampler = lambda *args, **kwargs: (calls.append((args, kwargs)) or {"samples": "latent"},)
             self.module._build_shot_conditioning = lambda *_args, **_kwargs: ("cond", {"samples": "base"})
@@ -444,6 +505,8 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             self.module._decode_video = lambda _vae, out_latent, *_args, **_kwargs: out_latent
             self.module._decode_audio = lambda _vae, out_latent: out_latent
             self.module._deep_cleanup = lambda: None
+            self.module._upscale_latent_video = lambda *_args, **_kwargs: (_ for _ in ()).throw(RuntimeError("should not run"))
+            self.module._copy_sample_latent = lambda sampled: sampled
 
             self.module.H3LongVideos()._render(
                 model=object(),
@@ -459,7 +522,7 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 tiled=False,
                 sa=(123, 20, 1.0, "res_multistep", "simple", 1.0),
                 handoff=None,
-                detail_pass="false",
+                latent_upscale_param={"mode": "off"},
             )
 
             self.assertEqual(len(calls), 1)
@@ -470,6 +533,8 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             self.module._decode_video = original_decode_video
             self.module._decode_audio = original_decode_audio
             self.module._deep_cleanup = original_cleanup
+            self.module._upscale_latent_video = original_upscale
+            self.module._copy_sample_latent = original_copy_sample
 
     def test_distribute_generations_canonicalizes_per_shot_audio_and_anchor_directives(self):
         generations = self.module.distribute_generations(
@@ -736,6 +801,12 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             self.assertNotIn(f"ref_image_{index}", optional)
         self.assertNotIn("per_beat_length", optional)
         self.assertNotIn("cleanup_between_shots", optional)
+        self.assertNotIn("detail_pass", optional)
+        self.assertNotIn("detail_sampler_name", optional)
+        self.assertNotIn("detail_scheduler", optional)
+        self.assertNotIn("detail_steps", optional)
+        self.assertNotIn("detail_denoise", optional)
+        self.assertIn("latent_upscale_param", optional)
 
     def test_shot_seconds_tooltip_describes_ceiling_behavior(self):
         optional = self.module.H3LongVideos.INPUT_TYPES()["optional"]
@@ -743,7 +814,7 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
 
         self.assertIn("GLOBAL per-shot maximum", tooltip)
         self.assertIn("A beat's own `seconds:` directive can still ask for less", tooltip)
-        self.assertIn("honoring it; may spill to system RAM (slow) or OOM", tooltip)
+        self.assertIn("let the render fail instead of shrinking it", tooltip)
 
     def test_resolve_shot_frames_honors_forced_request_over_budget(self):
         original_estimate_shot_frames = self.module.estimate_shot_frames
@@ -928,12 +999,23 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
                 plan_only=True,
                 ref_1={"image": "live-1"},
                 ref_3={"image": "live-3"},
+                latent_upscale_param={
+                    "mode": "interp",
+                    "method": "bilinear",
+                    "sampler_name": "euler_ancestral",
+                    "scheduler": "simple",
+                    "steps": 2,
+                    "denoise": 0.2,
+                    "megapixels": 1.5,
+                },
             )
 
             self.assertEqual(calls["refs"][0]["image"], "live-1")
             self.assertIsNone(calls["refs"][1])
             self.assertEqual(calls["refs"][2]["image"], "live-3")
             self.assertEqual(result[2].count("ref2va: 2 reference image(s)"), 1)
+            self.assertIn("latent upscale:", result[2])
+            self.assertIn("euler_ancestral/simple", result[2])
         finally:
             self.module.parse_resolution = original_parse_resolution
             self.module._connected_refs = original_connected_refs
@@ -1061,6 +1143,389 @@ class DumasH3LongVideosHelperTests(unittest.TestCase):
             {"DumasH3LongVideos": "Dumas H3 Long Videos (FL2VA + REF2VA)"},
         )
 
+    def test_latent_upscale_params_node_is_exposed(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        required = latent.H3LatentUpscaleParams.INPUT_TYPES()["required"]
+
+        self.assertEqual(
+            latent.NODE_CLASS_MAPPINGS,
+            {"DumasH3LatentUpscaleParams": latent.H3LatentUpscaleParams},
+        )
+        self.assertEqual(
+            latent.NODE_DISPLAY_NAME_MAPPINGS,
+            {"DumasH3LatentUpscaleParams": "Dumas H3 Latent Upscale Params"},
+        )
+        self.assertEqual(required["sampler_name"][1]["default"], "euler_ancestral")
+        self.assertEqual(required["scheduler"][1]["default"], "simple")
+        self.assertEqual(required["steps"][1]["default"], 2)
+        self.assertEqual(required["denoise"][1]["default"], 0.2)
+        self.assertEqual(required["megapixels"][1]["default"], 1.0)
+        self.assertEqual(required["tile_width"][1]["default"], 512)
+        self.assertEqual(required["tile_height"][1]["default"], 512)
+        self.assertEqual(required["overlap"][1]["default"], 64)
+        self.assertEqual(required["fade_width"][1]["default"], 32)
+        self.assertEqual(required["fade_height"][1]["default"], 32)
+        self.assertEqual(required["overlap_mode"][1]["default"], "earlier")
+        self.assertEqual(required["overlap_blend"][1]["default"], "linear")
+        self.assertEqual(required["tile_size_mode"][1]["default"], "specific_size")
+        self.assertEqual(required["grid_rows"][1]["default"], 2)
+        self.assertEqual(required["grid_cols"][1]["default"], 2)
+        self.assertEqual(required["spatial_w_overlap"][1]["default"], 128)
+        self.assertEqual(required["spatial_h_overlap"][1]["default"], 128)
+        self.assertEqual(required["min_tile_size"][1]["default"], 256)
+        self.assertEqual(required["masked_area_noise"][1]["default"], 0.0)
+        self.assertFalse(required["brightness_match"][1]["default"])
+        self.assertEqual(required["dynamic_fade"][1]["default"], "off")
+        self.assertEqual(required["dynamic_fade_min"][1]["default"], 32)
+        self.assertEqual(required["chunk_length"][1]["default"], 85)
+        self.assertEqual(required["temporal_overlap"][1]["default"], 17)
+        self.assertFalse(required["resize_conditioning"][1]["default"])
+        self.assertEqual(required["anchor_strength"][1]["default"], 0.999)
+
+    def test_latent_upscale_mode_infers_legacy_model_payloads(self):
+        self.assertEqual(self.module._latent_upscale_mode({"model_name": "foo.safetensors"}), "model")
+        self.assertEqual(self.module._latent_upscale_mode({"method": "bilinear"}), "interp")
+        self.assertEqual(self.module._latent_upscale_mode({"mode": "model"}), "model")
+        self.assertEqual(self.module._latent_upscale_mode({}), "off")
+
+    def test_tag_oom_stage_marks_oom_exceptions(self):
+        exc = RuntimeError("CUDA out of memory")
+        tagged = self.module._tag_oom_stage(exc, "latent_upscale")
+        self.assertIs(tagged, exc)
+        self.assertEqual(getattr(tagged, "_h3_stage", ""), "latent_upscale")
+
+    def test_shrink_model_tile_param_reduces_tile_size(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        smaller = latent._shrink_model_tile_param({
+            "tile_size_mode": "specific_size",
+            "tile_width": 512,
+            "tile_height": 512,
+            "overlap": 64,
+            "fade_width": 32,
+            "fade_height": 32,
+        })
+        self.assertIsNotNone(smaller)
+        self.assertEqual(smaller["tile_size_mode"], "rows_cols")
+        self.assertEqual(smaller["grid_rows"], 4)
+        self.assertEqual(smaller["grid_cols"], 4)
+        self.assertEqual(smaller["spatial_w_overlap"], 0)
+        self.assertEqual(smaller["spatial_h_overlap"], 0)
+        self.assertEqual(smaller["fade_width"], 0)
+        self.assertEqual(smaller["fade_height"], 0)
+        self.assertEqual(smaller["min_tile_size"], 32)
+
+    def test_shrink_model_tile_param_rows_cols_resets_overlap(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        smaller = latent._shrink_model_tile_param({
+            "tile_size_mode": "rows_cols",
+            "grid_rows": 4,
+            "grid_cols": 4,
+            "spatial_w_overlap": 128,
+            "spatial_h_overlap": 128,
+            "fade_width": 64,
+            "fade_height": 64,
+            "min_tile_size": 256,
+        })
+        self.assertIsNotNone(smaller)
+        self.assertEqual(smaller["grid_rows"], 8)
+        self.assertEqual(smaller["grid_cols"], 8)
+        self.assertEqual(smaller["spatial_w_overlap"], 0)
+        self.assertEqual(smaller["spatial_h_overlap"], 0)
+        self.assertEqual(smaller["fade_width"], 0)
+        self.assertEqual(smaller["fade_height"], 0)
+        self.assertEqual(smaller["min_tile_size"], 32)
+
+    def test_shrink_model_tile_param_rows_cols_can_reach_thirty_two(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        smaller = latent._shrink_model_tile_param({
+            "tile_size_mode": "rows_cols",
+            "grid_rows": 16,
+            "grid_cols": 16,
+            "spatial_w_overlap": 0,
+            "spatial_h_overlap": 0,
+            "fade_width": 0,
+            "fade_height": 0,
+            "min_tile_size": 32,
+        })
+        self.assertIsNotNone(smaller)
+        self.assertEqual(smaller["grid_rows"], 32)
+        self.assertEqual(smaller["grid_cols"], 32)
+
+    def test_temporal_segments_split_long_sequences(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        bounds = latent._temporal_segments(36, 85, 17)
+        self.assertGreater(len(bounds), 1)
+        self.assertEqual(bounds[0][0], 0)
+        self.assertEqual(bounds[-1][2], 36)
+
+    def test_shrink_temporal_param_reduces_chunk_length(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        smaller = latent._shrink_temporal_param({
+            "chunk_length": 85,
+            "temporal_overlap": 17,
+        })
+        self.assertIsNotNone(smaller)
+        self.assertEqual(smaller["chunk_length"], 17)
+        self.assertEqual(smaller["temporal_overlap"], 0)
+
+    def test_cuda_model_temporal_params_keep_splitting_saved_workflows(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        chunk_length, temporal_overlap = latent._effective_temporal_params({
+            "mode": "model",
+            "device": "cuda",
+            "chunk_length": 85,
+            "temporal_overlap": 17,
+        }, frame_count=124)
+        self.assertEqual(chunk_length, 85)
+        self.assertEqual(temporal_overlap, 17)
+
+    def test_cuda_model_temporal_params_keep_short_saved_workflows_until_oom(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        chunk_length, temporal_overlap = latent._effective_temporal_params({
+            "mode": "model",
+            "device": "cuda",
+            "chunk_length": 85,
+            "temporal_overlap": 17,
+        }, frame_count=85)
+        self.assertEqual(chunk_length, 85)
+        self.assertEqual(temporal_overlap, 17)
+
+    def test_cuda_model_oom_retries_temporal_before_spatial_fallback(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+
+        calls = []
+        original_tiled = latent._upscale_video_model_tiled
+        original_shrink_model = latent._shrink_model_tile_param
+        try:
+            def tiled(_video, param):
+                calls.append(("tiled", param.get("chunk_length"), param.get("tile_size_mode")))
+                raise RuntimeError("out of memory")
+
+            latent._upscale_video_model_tiled = tiled
+            latent._shrink_model_tile_param = (
+                lambda param: calls.append(("shrink_spatial", param.get("tile_size_mode"))) or None
+            )
+
+            with self.assertRaisesRegex(RuntimeError, "smaller temporal chunk"):
+                latent.upscale_video_model(
+                    "video",
+                    {
+                        "mode": "model",
+                        "device": "cuda",
+                        "model_name": "upscale.safetensors",
+                        "chunk_length": 85,
+                        "temporal_overlap": 17,
+                    },
+                )
+
+            self.assertEqual(calls[0], ("tiled", 85, None))
+            self.assertNotIn(("shrink_spatial", None), calls)
+        finally:
+            latent._upscale_video_model_tiled = original_tiled
+            latent._shrink_model_tile_param = original_shrink_model
+
+    def test_interp_temporal_params_preserve_upstream_defaults(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        chunk_length, temporal_overlap = latent._effective_temporal_params({
+            "mode": "interp",
+            "device": "cuda",
+            "chunk_length": 85,
+            "temporal_overlap": 17,
+        })
+        self.assertEqual(chunk_length, 85)
+        self.assertEqual(temporal_overlap, 17)
+
+    def test_unload_upscale_model_defers_while_held(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+
+        class FakeParam:
+            device = "cuda"
+
+        class FakeModel:
+            def __init__(self):
+                self.moves = []
+
+            def parameters(self):
+                return iter((FakeParam(),))
+
+            def to(self, device):
+                self.moves.append(device)
+                return self
+
+        cache_key = "upscale.safetensors::cuda::fp16"
+        original_cache_value = latent._MODEL_CACHE.get(cache_key)
+        original_hold_depth = latent._MODEL_HOLD_DEPTH
+        fake_model = FakeModel()
+        try:
+            latent._MODEL_CACHE[cache_key] = fake_model
+            latent._MODEL_HOLD_DEPTH = 0
+            with latent._hold_upscale_model_loaded():
+                latent.unload_upscale_model("upscale.safetensors", "cuda", "fp16")
+            self.assertEqual(fake_model.moves, [])
+
+            latent.unload_upscale_model("upscale.safetensors", "cuda", "fp16")
+            self.assertEqual(fake_model.moves, ["cpu"])
+        finally:
+            latent._MODEL_HOLD_DEPTH = original_hold_depth
+            if original_cache_value is None:
+                latent._MODEL_CACHE.pop(cache_key, None)
+            else:
+                latent._MODEL_CACHE[cache_key] = original_cache_value
+
+    def test_model_upscale_releases_cached_model_after_pass(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        calls = []
+
+        original_temporal = latent._upscale_video_temporal_chunks
+        original_unload_now = latent._unload_upscale_model_now
+        original_cuda = latent.torch.cuda
+        original_device = getattr(latent.torch, "device", None)
+        try:
+            latent.torch.cuda = types.SimpleNamespace(is_available=lambda: True)
+            latent.torch.device = lambda value: value
+
+            def temporal(video, param, upscaler):
+                calls.append(("temporal", latent._MODEL_HOLD_DEPTH))
+                return "video", 8, 16
+
+            def unload_now(name, device, precision):
+                calls.append(("unload", name, device, precision, latent._MODEL_HOLD_DEPTH))
+
+            latent._upscale_video_temporal_chunks = temporal
+            latent._unload_upscale_model_now = unload_now
+
+            result = latent.upscale_latent_video("source", {
+                "mode": "model",
+                "model_name": "upscale.safetensors",
+                "device": "cuda",
+                "precision": "fp16",
+            })
+
+            self.assertEqual(result, ("video", 8, 16))
+            self.assertEqual(calls[0], ("temporal", 1))
+            self.assertEqual(calls[1], ("unload", "upscale.safetensors", "cuda", "fp16", 1))
+            self.assertEqual(latent._MODEL_HOLD_DEPTH, 0)
+        finally:
+            latent._upscale_video_temporal_chunks = original_temporal
+            latent._unload_upscale_model_now = original_unload_now
+            latent.torch.cuda = original_cuda
+            if original_device is None:
+                delattr(latent.torch, "device")
+            else:
+                latent.torch.device = original_device
+
+    def test_model_upscale_oom_falls_back_to_interp(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        calls = []
+
+        original_temporal = latent._upscale_video_temporal_chunks
+        original_interp = latent.upscale_video_interp
+        original_unload_now = latent._unload_upscale_model_now
+        original_cuda = latent.torch.cuda
+        original_device = getattr(latent.torch, "device", None)
+        try:
+            latent.torch.cuda = types.SimpleNamespace(
+                is_available=lambda: True,
+                empty_cache=lambda: calls.append(("empty_cache",)),
+            )
+            latent.torch.device = lambda value: value
+
+            def temporal(_video, _param, _upscaler):
+                calls.append(("temporal", latent._MODEL_HOLD_DEPTH))
+                raise RuntimeError("H3 latent upscale exhausted its GPU spatial fallbacks")
+
+            def interp(video, param):
+                calls.append(("interp", video, param.get("mode"), param.get("method")))
+                return "interp_video", 8, 16
+
+            def unload_now(name, device, precision):
+                calls.append(("unload", name, device, precision, latent._MODEL_HOLD_DEPTH))
+
+            latent._upscale_video_temporal_chunks = temporal
+            latent.upscale_video_interp = interp
+            latent._unload_upscale_model_now = unload_now
+
+            result = latent.upscale_latent_video("source", {
+                "mode": "model",
+                "model_name": "upscale.safetensors",
+                "method": "bilinear",
+                "device": "cuda",
+                "precision": "fp16",
+            })
+
+            self.assertEqual(result, ("interp_video", 8, 16))
+            self.assertEqual(calls[0], ("temporal", 1))
+            self.assertEqual(calls[1], ("unload", "upscale.safetensors", "cuda", "fp16", 1))
+            self.assertIn(("empty_cache",), calls)
+            self.assertEqual(calls[-1], ("interp", "source", "interp", "bilinear"))
+            self.assertEqual(latent._MODEL_HOLD_DEPTH, 0)
+        finally:
+            latent._upscale_video_temporal_chunks = original_temporal
+            latent.upscale_video_interp = original_interp
+            latent._unload_upscale_model_now = original_unload_now
+            latent.torch.cuda = original_cuda
+            if original_device is None:
+                delattr(latent.torch, "device")
+            else:
+                latent.torch.device = original_device
+
+    def test_model_upscale_skips_learned_model_on_8gb_cuda(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+        calls = []
+
+        original_temporal = latent._upscale_video_temporal_chunks
+        original_interp = latent.upscale_video_interp
+        original_cuda = latent.torch.cuda
+        try:
+            latent.torch.cuda = types.SimpleNamespace(
+                is_available=lambda: True,
+                mem_get_info=lambda: (1 * 1024 * 1024 * 1024, 8 * 1024 * 1024 * 1024),
+                empty_cache=lambda: calls.append(("empty_cache",)),
+            )
+
+            def temporal(_video, _param, _upscaler):
+                calls.append(("temporal",))
+                raise AssertionError("learned model path should be skipped on 8GB CUDA")
+
+            def interp(video, param):
+                calls.append(("interp", video, param.get("mode"), param.get("method")))
+                return "interp_video", 8, 16
+
+            latent._upscale_video_temporal_chunks = temporal
+            latent.upscale_video_interp = interp
+
+            result = latent.upscale_latent_video("source", {
+                "mode": "model",
+                "model_name": "upscale.safetensors",
+                "method": "bilinear",
+                "device": "cuda",
+                "precision": "fp16",
+            })
+
+            self.assertEqual(result, ("interp_video", 8, 16))
+            self.assertNotIn(("temporal",), calls)
+            self.assertIn(("empty_cache",), calls)
+            self.assertEqual(calls[-1], ("interp", "source", "interp", "bilinear"))
+        finally:
+            latent._upscale_video_temporal_chunks = original_temporal
+            latent.upscale_video_interp = original_interp
+            latent.torch.cuda = original_cuda
+
+    def test_upscale_video_model_raises_when_gpu_cannot_shrink(self):
+        latent = importlib.import_module("dumas_h3_latent_upscale")
+
+        original_tiled = latent._upscale_video_model_tiled
+        original_shrink = latent._shrink_model_tile_param
+        try:
+            latent._shrink_model_tile_param = lambda _param: None
+            latent._upscale_video_model_tiled = lambda *_args, **_kwargs: (_ for _ in ()).throw(RuntimeError("out of memory"))
+
+            with self.assertRaisesRegex(RuntimeError, "H3 latent upscale exhausted its GPU spatial fallbacks"):
+                latent.upscale_video_model("video", {"device": "cuda", "precision": "fp16"})
+        finally:
+            latent._upscale_video_model_tiled = original_tiled
+            latent._shrink_model_tile_param = original_shrink
+
     def test_compose_persistent_does_not_expand_ambiguous_plural_to_full_cast(self):
         active = self.module.parse_wardrobe(
             "Maya = she, red jacket\n"

tests/test_dumas_image_nodes.py

@@ -356,6 +356,233 @@ class DumasImageNodeTests(unittest.TestCase):
         required = self.image_nodes.DumasLocationReferenceNode.INPUT_TYPES()["required"]
         self.assertNotIn("picture_id", required)
 
+    def test_character_helper_restores_image_and_text_outputs(self):
+        node = self.image_nodes.DumasCharacterHelperNode()
+        image1 = FakeTensorBatch()
+        image2 = FakeTensorBatch()
+
+        result = node.build_character_text(
+            image1=image1,
+            image2=image2,
+            image1_picture_id="1",
+            image2_picture_id="2",
+            character_id="char_dave",
+            name="Dave",
+            alias="The Locksmith",
+            gender="male",
+            age="41",
+            nationality="English",
+            occupation="a detective",
+            height_feet="6",
+            height_inches="2",
+            accent="English",
+            general="Moves carefully and notices every exit",
+            wardrobe="weathered red flight jacket, grey cargo shorts, black boots",
+        )
+
+        self.assertIs(result[0], image1)
+        self.assertIs(result[1], image2)
+        self.assertIn("<Picture 1> and <Picture 2> reference the same character", result[2])
+        self.assertIn("Dave is also known as The Locksmith", result[2])
+        self.assertIn("is 41 years old", result[2])
+        self.assertEqual(result[3], "Dave = weathered red flight jacket, grey cargo shorts, black boots")
+        self.assertIs(result[4]["image"], image1)
+        self.assertIs(result[5]["image"], image2)
+        self.assertEqual(result[4]["id"], "char-dave")
+        self.assertEqual(result[5]["id"], "char-dave")
+        self.assertEqual(result[4]["name"], "Dave")
+        self.assertEqual(result[4]["aliases"], ["The Locksmith"])
+        self.assertEqual(result[4]["facts"]["age"], "41")
+        self.assertEqual(result[4]["facts"]["height_feet"], "6")
+        self.assertEqual(result[4]["facts"]["height_inches"], "2")
+        self.assertEqual(result[4]["wardrobe"], "weathered red flight jacket, grey cargo shorts, black boots")
+        self.assertEqual(len(result), 6)
+
+    def test_location_helper_matches_character_helper_shape_without_wardrobe(self):
+        node = self.image_nodes.DumasLocationHelperNode()
+        image1 = FakeTensorBatch()
+        image2 = FakeTensorBatch()
+
+        result = node.build_location_text(
+            image1=image1,
+            image2=image2,
+            image1_picture_id="3",
+            image2_picture_id="4",
+            location_id="coffee-shop-01",
+            name="Coffee Shop",
+            alias="Cafe Interior",
+            description="Warm tungsten lighting, narrow counter, rainy front window",
+            general="Evening ambience, cramped but cozy",
+        )
+
+        self.assertIs(result[0], image1)
+        self.assertIs(result[1], image2)
+        self.assertIn("<Picture 3> and <Picture 4> reference the same location", result[2])
+        self.assertIn("Coffee Shop is also known as Cafe Interior", result[2])
+        self.assertIn("Warm tungsten lighting, narrow counter, rainy front window.", result[2])
+        self.assertIn("Evening ambience, cramped but cozy.", result[2])
+        self.assertEqual(len(result), 3)
+
+    def test_soundscape_helper_defaults_to_selected_preset_description(self):
+        node = self.image_nodes.DumasSoundscapeHelperNode()
+
+        result = node.build_soundscape("rainy street", "")
+
+        self.assertEqual(result[0], "steady rain, wet pavement, distant traffic hum")
+
+    def test_h3_prompt_curator_compacts_named_references(self):
+        node = self.image_nodes.DumasH3PromptCuratorNode()
+        dave_image = FakeTensorBatch()
+        cafe_image = FakeTensorBatch()
+        van_image = FakeTensorBatch()
+        dave = self.image_nodes.make_reference(
+            kind="character",
+            image=dave_image,
+            name="Dave",
+            aliases="The Locksmith",
+            description="tired eyes, cropped brown hair",
+            wardrobe="red flight jacket",
+        )
+        cafe = self.image_nodes.make_reference(
+            kind="location",
+            image=cafe_image,
+            name="Coffee Shop",
+            description="warm tungsten lighting and rainy windows",
+        )
+        van = self.image_nodes.make_reference(
+            kind="location",
+            image=van_image,
+            name="Blue Van",
+            description="scuffed blue delivery van",
+        )
+
+        result = node.curate_prompt(
+            action_prompt="Dave runs from the Coffee Shop into the rain.",
+            anatomy_guard="auto",
+            subject_count_guard="auto",
+            anchor="grounded handheld thriller",
+            soundscape="steady rain",
+            ref_1=dave,
+            ref_2=van,
+            ref_3=cafe,
+        )
+
+        prompt = result[0]
+        self.assertIn("<Picture 1> Dave", prompt)
+        self.assertIn("<Picture 2> Coffee Shop", prompt)
+        self.assertIn("Action: Dave runs from the Coffee Shop into the rain.", prompt)
+        self.assertIn("Anatomy guard:", prompt)
+        self.assertIn("Subject count guard:", prompt)
+        self.assertIn("exactly one named character: <Picture 1> Dave", prompt)
+        self.assertIs(result[1], dave_image)
+        self.assertIs(result[2], cafe_image)
+        self.assertIsNone(result[3])
+        self.assertEqual(result[10], 2)
+        self.assertIn("input 3-><Picture 2> Coffee Shop", result[11])
+
+    def test_h3_prompt_curator_renumbers_explicit_reference_tags(self):
+        node = self.image_nodes.DumasH3PromptCuratorNode()
+        image1 = FakeTensorBatch()
+        image3 = FakeTensorBatch()
+        unused = FakeTensorBatch()
+        first = self.image_nodes.make_reference(kind="character", image=image1, name="Maya")
+        second = self.image_nodes.make_reference(kind="location", image=unused, name="Lobby")
+        third = self.image_nodes.make_reference(kind="location", image=image3, name="Rooftop")
+
+        result = node.curate_prompt(
+            action_prompt="<Picture 1> Maya crosses to <ref3> as the wind rises.",
+            anatomy_guard="off",
+            subject_count_guard="off",
+            ref_1=first,
+            ref_2=second,
+            ref_3=third,
+        )
+
+        prompt = result[0]
+        self.assertIn("<Picture 1> Maya crosses to <Picture 2>", prompt)
+        self.assertNotIn("<Picture 3>", prompt)
+        self.assertIs(result[1], image1)
+        self.assertIs(result[2], image3)
+        self.assertIsNone(result[3])
+        self.assertEqual(result[10], 2)
+
+    def test_h3_prompt_curator_can_force_subject_count_without_character_refs(self):
+        node = self.image_nodes.DumasH3PromptCuratorNode()
+
+        result = node.curate_prompt(
+            action_prompt="A locked-off shot of the empty corridor.",
+            anatomy_guard="off",
+            subject_count_guard="on",
+        )
+
+        self.assertIn("Subject count guard:", result[0])
+        self.assertIn("Only include the people explicitly described", result[0])
+        self.assertEqual(result[10], 0)
+
+    def test_h3_prompt_curator_treats_helper_image_pair_as_one_character(self):
+        helper = self.image_nodes.DumasCharacterHelperNode()
+        curator = self.image_nodes.DumasH3PromptCuratorNode()
+        image1 = FakeTensorBatch()
+        image2 = FakeTensorBatch()
+        helper_result = helper.build_character_text(
+            image1=image1,
+            image2=image2,
+            image1_picture_id="1",
+            image2_picture_id="2",
+            character_id="char_dave",
+            name="Dave",
+            alias="The Locksmith",
+            gender="male",
+            age="41",
+            nationality="English",
+            occupation="detective",
+            height_feet="6",
+            height_inches="2",
+            accent="English",
+            general="Tired eyes, cropped brown hair",
+            wardrobe="weathered red flight jacket",
+        )
+
+        result = curator.curate_prompt(
+            action_prompt="Dave checks the locked door.",
+            anatomy_guard="on",
+            subject_count_guard="auto",
+            ref_1=helper_result[4],
+            ref_2=helper_result[5],
+        )
+
+        self.assertIs(result[1], image1)
+        self.assertIs(result[2], image2)
+        self.assertEqual(result[10], 2)
+        self.assertIn("Character facts for <Picture 1> Dave", result[0])
+        self.assertIn("41 years old", result[0])
+        self.assertIn("6 foot 2 tall", result[0])
+        self.assertIn("exactly one named character: <Picture 1> Dave", result[0])
+        self.assertNotIn("exactly 2 named characters", result[0])
+
+    def test_h3_prompt_curator_defaults_anatomy_guard_to_on(self):
+        required = self.image_nodes.DumasH3PromptCuratorNode.INPUT_TYPES()["required"]
+
+        self.assertEqual(required["anatomy_guard"][1]["default"], "on")
+
+    def test_helper_node_mappings_use_general_purpose_helpers(self):
+        mappings = self.image_nodes.NODE_CLASS_MAPPINGS
+        display = self.image_nodes.NODE_DISPLAY_NAME_MAPPINGS
+
+        self.assertIs(mappings["DumasCharacterHelper"], self.image_nodes.DumasCharacterHelperNode)
+        self.assertIs(mappings["DumasLocationHelper"], self.image_nodes.DumasLocationHelperNode)
+        self.assertIs(mappings["DumasSoundscapeHelper"], self.image_nodes.DumasSoundscapeHelperNode)
+        self.assertIs(mappings["DumasH3PromptCurator"], self.image_nodes.DumasH3PromptCuratorNode)
+        self.assertEqual(display["DumasCharacterHelper"], "Dumas Character Helper")
+        self.assertEqual(display["DumasLocationHelper"], "Dumas Location Helper")
+        self.assertEqual(display["DumasSoundscapeHelper"], "Dumas Soundscape Helper")
+        self.assertEqual(display["DumasH3PromptCurator"], "Dumas H3 Prompt Curator")
+
+    def test_h3_prompt_curator_uses_documented_reference_limits(self):
+        node = self.image_nodes.DumasH3PromptCuratorNode()
+        self.assertEqual(len(node.RETURN_TYPES), 12)
+        self.assertEqual(node.RETURN_NAMES[1:10], tuple(f"ref_image_{i}" for i in range(1, 10)))
+
     def test_normalize_reference_upgrades_generic_summary_with_socket_picture_id(self):
         image = FakeTensorBatch()