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docs/asset-engine: catalog + UI design brief

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services.yaml: form-generator contract for the forthcoming
asset-generation UI. 13 inference services on irv-ml1 (TTS, ASR,
SFX, music) catalogued with field schemas extracted from Pydantic
models, response types, reproducibility audit, and license
warnings. ComfyUI flagged catalog-deferred (workflow-DAG API
doesn't fit a form-based UI without a per-asset-type wrapper).

design-brief.md: the prompt to give a frontend-design agent before
any pixels. Locks in the data-model decisions whose later cost is
asymmetric (asset-as-first-class entity, content-addressed output
storage, reproducibility hard requirement, job table, auth as a
no-op DI seam, API surface ≠ UI surface, schema versioning,
tags/collections plumbed in v1 with no UI). Defines a closed
field-type vocabulary (8 types) and response-renderer vocabulary
(6 types) — agent isn't allowed to extend them. Pre-decides the
required UI surfaces; leaves IA, library-nav pattern, long-job
UX, and big-form ergonomics open for the agent to opine on.
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# services.yaml — inference services catalog on irv-ml1
#
# Drives the forthcoming asset-generation UI: each entry produces one
# form (auto-generated from `fields:`) and one response renderer
# (dispatched on `response.type`).
#
# Generated by an Explore-agent pass over stacks/<service>/{README.md,
# compose.yaml,.env.example,server.py|infer-api.py}. Pydantic models
# in code are the ground truth where they disagree with READMEs.
#
# Schema is v1; bump per-service `version:` when fields change so old
# Asset rows can still be interpreted.
services:
- id: kokoro
name: Kokoro 82M TTS
description: >
Lowest-latency English TTS (82M params, fp16). ~300ms TTFA, 35–100x realtime,
60+ built-in voices in 8 languages. Voice mixing via inline weights.
OpenAI-compatible /v1/audio/speech.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8193/v1/audio/speech
method: POST
content_type: application/json
model:
id: hexgrad/Kokoro-82M
revision: null
image: ghcr.io/remsky/kokoro-fastapi-gpu:v0.2.4-master
fields:
- name: input
type: textarea
label: Text
required: true
max_length: 5000
- name: voice
type: select
label: Voice
source_url: http://10.100.79.3:8193/v1/audio/voices
source_jsonpath: $.voices[*]
default: af_bella
description: >
60+ built-in voices. Custom blends: af_bella(2)+af_aoede(1) syntax for
weighted mixing. Persistent custom voices via playbooks/blend-kokoro-voice.yaml.
- name: response_format
type: select
options: [wav, mp3, opus, flac, pcm]
default: wav
- name: stream
type: bool
default: false
description: Phrase-by-phrase streaming via chunked HTTP.
response:
type: audio
mime_from_field: response_format
reproducibility:
seedable: false
deterministic: true
notes: >
No seed parameter. Model fully deterministic (no sampling); identical
params always produce identical bytes. Image tag is mutable; pin to
digest for v3 reproducibility audit.
estimated_latency:
cold_start_s: 2
warm_per_unit: "~300ms TTFA, 35–100x realtime"
license: Apache-2.0
notes: |
Voice mixing: voice="name1(w1)+name2(w2)+..." normalizes weights.
Custom voices persist at /worktank/kokoro/user_voices (bind-mounted).
- id: chatterbox
name: Chatterbox Turbo TTS
description: >
Resemble AI's low-latency English TTS (350M, ~75ms TTFB, 6× realtime).
Zero-shot voice cloning from ~5s reference. 9 paralinguistic tags.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8196/v1/audio/speech
method: POST
content_type: application/json
model:
id: ResembleAI/chatterbox-turbo
revision: null
image: devnen/Chatterbox-TTS-Server:latest
fields:
- name: input
type: textarea
label: Text (with optional [tags])
required: true
max_length: 5000
description: >
Inline tags: [laugh] [chuckle] [sigh] [gasp] [cough] [clear throat]
[sniff] [groan] [shush]. Turbo loses base-Chatterbox's exaggeration knob.
- name: model
type: select
options: [chatterbox-turbo]
default: chatterbox-turbo
- name: voice
type: select
label: Voice
default: alloy
description: >
Built-in OpenAI-compat aliases (alloy, echo, fable, onyx, nova, shimmer).
Cloned: 5–15s WAV files in /worktank/chatterbox/reference_audio/.
- name: response_format
type: select
options: [wav, opus, aac, flac, pcm_s16]
default: wav
- name: stream
type: bool
default: false
response:
type: audio
mime_from_field: response_format
reproducibility:
seedable: false
deterministic: true
notes: >
No seed. Wrapper repo updates ~weekly; pin SHA in .env. PerTh watermark
unconditionally applied (Resemble policy).
estimated_latency:
cold_start_s: 3
warm_per_unit: "~75ms TTFB, 6× realtime"
license: MIT
notes: |
Python 3.10 only (wrapper hardcoding).
Multilingual variant (23 languages) also available via .env.
- id: index-tts
name: IndexTTS-2
description: >
Bilibili's emotion-controllable zero-shot TTS. Disentangled emotion control
(timbre from one reference, emotion from another). 22050 Hz fixed output.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8192/v1/audio/speech
method: POST
content_type: application/json
model:
id: IndexTeam/IndexTTS-2
revision: null
image: local/index-tts:v2
fields:
- name: input
type: textarea
label: Text
required: true
max_length: 5000
- name: voice
type: select
label: Speaker Voice
description: <name>.wav in /worktank/index-tts/voices/. 5–30s clean clips.
- name: response_format
type: select
options: [wav]
default: wav
description: 22050 Hz PCM_16 mono only; no negotiation.
- name: stream
type: bool
default: false
description: >
Segment-level streaming (~120 tokens). Streaming WAV uses placeholder
data-length (0xFFFFFFFF); browsers fine, strict parsers may complain.
- name: emotion_voice
type: select
label: Emotion Reference Voice
optional: true
description: <name>.wav in /worktank/index-tts/emotions/.
- name: emotion_vector
type: json
label: Emotion Vector
optional: true
description: >
8 floats [happy, angry, sad, afraid, disgusted, melancholic, surprised, calm],
each 0.0–1.0.
- name: emotion_text
type: textarea
label: Emotion Description (free text)
optional: true
- name: emotion_alpha
type: slider
min: 0.0
max: 1.0
default: 1.0
label: Emotion Strength
response:
type: audio
mime: audio/wav
reproducibility:
seedable: false
deterministic: true
notes: >
No seed. 22050 Hz hardcoded — resample in caller if 24/48 kHz needed.
Precedence if multiple emotion sources: emotion_voice > vector > text.
estimated_latency:
cold_start_s: 5
warm_per_unit: "segment-latency streaming"
license: "Custom Bilibili (free at small scale; commercial tier 100M MAU)"
notes: |
Three-way mutual-exclusion among emotion_voice / emotion_vector / emotion_text;
precedence as above. UI should expose this as a single picker.
- id: qwen3-tts
name: Qwen3-TTS 1.7B
description: >
Alibaba's open English-first TTS (Apache 2.0). 10 languages, 97ms TTFB,
instruction-driven emotion, voice cloning.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8191/v1/audio/speech
method: POST
content_type: application/json
model:
id: Qwen/Qwen3-TTS-12Hz-1.7B
revision: null
image: local/qwen3-tts:v2
fields:
- name: model
type: select
options: [Qwen/Qwen3-TTS-12Hz-1.7B, Qwen/Qwen3-TTS-12Hz-0.6B-Base]
default: Qwen/Qwen3-TTS-12Hz-1.7B
- name: input
type: textarea
label: Text
required: true
max_length: 5000
- name: voice
type: select
label: Voice
description: >
Built-in or cloned. For cloning: clone:<name> where <name> is a profile
dir under /worktank/qwen3-tts/voices/profiles/. Create via /voice-studio
web UI or manually (meta.json + reference.wav).
- name: instructions
type: textarea
label: Emotion/Style Instructions
optional: true
description: >
Natural-language directive (e.g. "speak with cold contempt").
English instructions verified working ~2026-04.
- name: response_format
type: select
options: [wav, mp3, pcm]
default: wav
response:
type: audio
mime_from_field: response_format
reproducibility:
seedable: false
deterministic: true
estimated_latency:
cold_start_s: 5
warm_per_unit: "~97ms TTFB"
license: Apache-2.0
notes: |
Voice cloning shape differs from CosyVoice: profile-based, not voice-id-based.
- id: cosyvoice
name: CosyVoice 3 (Multilingual)
description: >
FunAudioLLM's multilingual expressive TTS. 18+ Chinese dialects + 8 other langs.
English prosody not ElevenLabs-grade — use Qwen3-TTS for English.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8190/v1/audio/speech
method: POST
content_type: application/json
model:
id: FunAudioLLM/Fun-CosyVoice3-0.5B-2512
revision: null
image: neosun/cosyvoice:v1.3.2
fields:
- name: model
type: select
options: [cosyvoice-v3, cosyvoice-v2]
default: cosyvoice-v3
- name: input
type: textarea
label: Text (with optional XML emotion tags)
required: true
max_length: 5000
description: >
For English: use XML tags <angry>, <sad>, <surprised>, <fast>, <whisper>, etc.
NOT the instruct field — English instruct values get vocalized literally
(upstream bug).
- name: voice
type: select
label: Voice (cloned only — no presets)
description: >
Create via POST /v1/voices/create (multipart with reference audio ≤30s).
Reference must be 16kHz mono ≤30s; longer = AssertionError.
- name: response_format
type: select
options: [wav]
default: wav
- name: speed
type: slider
min: 0.5
max: 2.0
default: 1.0
response:
type: audio
mime: audio/wav
reproducibility:
seedable: false
deterministic: true
notes: >
Reference audio MUST be ≤30s (16kHz mono). instruct field broken for English.
estimated_latency:
cold_start_s: 5
warm_per_unit: "~150ms TTFB streaming"
license: Apache-2.0
notes: |
GOTCHA: instruct field is Chinese-context only — UI should hide it for English
or surface a strong warning.
- id: fish-s2
name: Fish Audio S2-Pro
description: >
Fishaudio's richest-paralinguistic English TTS (15,000+ inline tags).
Trained 10M+ hours, dual-AR, ~150ms streaming TTFB. Released March 2026.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8195/v1/tts
method: POST
content_type: application/json
model:
id: fishaudio/s2-pro
revision: null
image: local/fish-s2:v1
fields:
- name: text
type: textarea
label: Text (with optional [tags])
required: true
max_length: 5000
description: >
Inline tags: [laugh] [whispers] [super happy] [sigh] [excited]
[heavy breathing] [angry] [sleepy] [crying] [surprise] ... (15,000+).
- name: references
type: json
label: Voice References
optional: true
description: >
Array of {audio: "/app/references/<file>.wav", text: "transcript"}.
Files under /worktank/fish-s2/references/ on host.
response:
type: audio
mime: audio/wav
reproducibility:
seedable: false
deterministic: true
estimated_latency:
cold_start_s: 8
warm_per_unit: "~150ms TTFB"
license: "Research-only (Fishaudio terms; non-commercial)"
license_warning: |
Research/internal only. Not clear for commercial use. Same flag as
Voxtral and SAO — UI must surface when output destined for products.
notes: |
NOT OpenAI-compatible: only /v1/tts. No /v1/audio/voices, no /v1/models.
Voice discovery is manual (host filesystem).
- id: kyutai-tts
name: Kyutai TTS 1.6B EN/FR
description: >
Kyutai's bilingual streaming TTS (1.6B, 2.5M hours). Heritage from Mimi codec
+ Moshi dialogue framework. OpenAI-compat HTTP wrapper over Rust streaming core.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8198/v1/audio/speech
method: POST
content_type: application/json
model:
id: kyutai/tts-1.6b-en_fr
revision: null
image: local/kyutai-tts:v1
fields:
- name: model
type: select
options: [tts-1.6b-en_fr]
default: tts-1.6b-en_fr
- name: input
type: textarea
label: Text
required: true
max_length: 5000
- name: voice
type: select
label: Voice
source_url: http://10.100.79.3:8198/v1/audio/voices
- name: response_format
type: select
options: [wav, mp3, pcm]
default: wav
- name: stream
type: bool
default: false
response:
type: audio
mime_from_field: response_format
reproducibility:
seedable: false
deterministic: true
notes: >
Wrapper adds Python overhead vs Kyutai's bare 220ms claim.
estimated_latency:
cold_start_s: 4
warm_per_unit: "~220–400ms TTFB (with wrapper)"
license: "TBD (Kyutai — verify)"
- id: vibevoice
name: VibeVoice 1.5B (Long-form)
description: >
Microsoft's diffusion-based long-form multi-speaker TTS. Multi-minute scripts
with speaker switching. Not for low-latency single-line use.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8194/v1/audio/speech
method: POST
content_type: application/json
model:
id: microsoft/VibeVoice-1.5B
revision: null
image: local/vibevoice:v1
fields:
- name: model
type: select
options: [vibevoice]
default: vibevoice
- name: input
type: textarea
label: Text (or Speaker N: ... script)
required: true
description: >
Single-speaker: plain text. Multi-speaker: "Speaker 0: ...\nSpeaker 1: ..."
via /v1/vibevoice/generate (extended endpoint).
- name: voice
type: select
label: Voice
default: Carter
description: >
Built-in: Carter, Davis, Emma, Frank, Grace, Mike, Samuel.
Custom: drop WAV/MP3/FLAC/M4A into /worktank/vibevoice/voices/, restart container.
Voice cloning training NOT released by Microsoft.
- name: response_format
type: select
options: [wav, mp3]
default: wav
- name: stream
type: bool
default: false
description: Single-shot endpoint doesn't stream; segment-level on multi-speaker.
response:
type: audio
mime_from_field: response_format
reproducibility:
seedable: false
deterministic: true
estimated_latency:
cold_start_s: 8
warm_per_unit: "30–60s first generation; segment-based after"
license: MIT
notes: |
flash_attention_2 default; sdpa fallback.
7B variant (rsxdalv/VibeVoice-Large, ~18GB) needs int8 for <10GB VRAM.
- id: voxtral
name: Voxtral 4B TTS
description: >
Mistral AI's 4B multilingual streaming TTS (CC BY-NC — research/internal only).
8 languages, 70ms model latency, 9.7× realtime. Served via vLLM-Omni.
category: tts
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8197/v1/audio/speech
method: POST
content_type: application/json
model:
id: mistralai/Voxtral-4B-TTS-2603
revision: null
image: vllm/vllm-omni:v0.18.0
fields:
- name: model
type: select
options: [mistralai/Voxtral-4B-TTS-2603]
default: mistralai/Voxtral-4B-TTS-2603
- name: input
type: textarea
label: Text
required: true
max_length: 5000
- name: voice
type: select
label: Voice
source_url: http://10.100.79.3:8197/v1/audio/voices
default: alloy
- name: response_format
type: select
options: [wav, mp3, pcm]
default: wav
- name: stream
type: bool
default: false
response:
type: audio
mime_from_field: response_format
reproducibility:
seedable: false
deterministic: true
notes: vLLM-Omni v0.18.0+ required (first Voxtral-aware release, 2026-03-29).
estimated_latency:
cold_start_s: 6
warm_per_unit: "~70ms model latency, 9.7× realtime"
license: "CC BY-NC (Mistral) — non-commercial only"
license_warning: |
NOT clear for commercial use. UI must surface this when output destined
for products. Use Kokoro/Chatterbox/Fish/IndexTTS/Qwen3/CosyVoice for
commercial paths.
- id: parakeet
name: Parakeet TDT (ASR)
description: >
NVIDIA Parakeet-TDT 0.6B (int8 ONNX, ~400MB) via sherpa-onnx.
Transcription only.
category: asr
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8765/transcribe
method: POST
content_type: multipart/form-data
model:
id: nvidia/parakeet-tdt-v2-en-int8
revision: null
image: local/parakeet:sherpa-onnx-v2
fields:
- name: file
type: file
label: Audio File
required: true
accepted_types: [audio/wav, audio/mp3, audio/flac, audio/ogg]
response:
type: text
output_field: text
reproducibility:
seedable: false
deterministic: true
estimated_latency:
cold_start_s: 1
warm_per_unit: "~realtime"
license: "Proprietary (NVIDIA model) + Apache-2.0 (sherpa-onnx)"
notes: |
Aliased at /v1/audio/transcriptions for OpenAI compat.
v3 model (25 languages) available via env-only change.
- id: stable-audio-open
name: Stable Audio Open 1.0 (SFX)
description: >
Stability AI's text-to-audio diffusion. SFX/foley/ambience only — NOT music.
Max 47s clips. Seeded, fully deterministic.
category: sfx
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8211/v1/audio/sfx
method: POST
content_type: application/json
model:
id: stabilityai/stable-audio-open-1.0
revision: null
image: local/stable-audio-open:v1
fields:
- name: prompt
type: textarea
label: Prompt
required: true
- name: negative_prompt
type: textarea
label: Negative Prompt
default: "Low quality."
- name: duration
type: slider
min: 0.5
max: 47.0
default: 10.0
label: Duration (seconds)
- name: steps
type: slider
min: 10
max: 300
default: 100
label: Diffusion Steps
- name: cfg_scale
type: slider
min: 0.0
max: 20.0
default: 7.0
label: CFG Scale
- name: seed
type: number
label: Seed
optional: true
response:
type: audio
mime: audio/wav
reproducibility:
seedable: true
deterministic: true
notes: >
Identical seed+prompt+steps+cfg = bit-identical bytes. Wrapper serializes
concurrent requests via asyncio.Lock (StableAudioPipeline not reentrant).
estimated_latency:
cold_start_s: 3
warm_per_unit: "~30–60s per 10s clip"
license: "Stability AI Community (non-commercial)"
license_warning: |
Non-commercial only. Same flag as Voxtral for commercial paths.
- id: ace-step
name: ACE-Step 1.5 (Music)
description: >
Apache-2.0 hybrid diffusion+LLM music generation. Multi-minute lyric-aware
songs with vocals + instrumentation.
category: music
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8210/generate
method: POST
content_type: application/json
model:
id: ace-step/ACE-Step
revision: main
image: local/ace-step:v1
fields:
- name: prompt
type: textarea
label: Musical Prompt
required: true
description: Style/mood/instrumentation, e.g. "uplifting pop with synth leads".
- name: lyrics
type: textarea
label: Lyrics
optional: true
- name: audio_duration
type: slider
min: 5.0
max: 600.0
default: 30.0
label: Duration (seconds)
- name: audio_format
type: select
options: [wav, mp3, flac]
default: wav
- name: infer_step
type: number
default: 20
label: Inference Steps
- name: guidance_scale
type: slider
min: 1.0
max: 15.0
default: 7.5
- name: scheduler_type
type: select
options: [linear, squared, sqrt]
default: linear
- name: cfg_type
type: select
options: [none, cfg, cfg_rw]
default: cfg
- name: omega_scale
type: slider
min: 0.0
max: 1.0
default: 0.5
- name: actual_seeds
type: json
label: Seeds
default: [42]
- name: guidance_interval
type: slider
min: 0.0
max: 1.0
default: 0.0
- name: guidance_interval_decay
type: slider
min: 0.0
max: 1.0
default: 1.0
- name: min_guidance_scale
type: slider
min: 0.0
max: 10.0
default: 1.0
- name: use_erg_tag
type: bool
default: false
- name: use_erg_lyric
type: bool
default: false
- name: use_erg_diffusion
type: bool
default: false
- name: oss_steps
type: json
default: []
- name: guidance_scale_text
type: slider
min: 0.0
max: 15.0
default: 0.0
- name: guidance_scale_lyric
type: slider
min: 0.0
max: 15.0
default: 0.0
- name: audio2audio_enable
type: bool
default: false
- name: ref_audio_strength
type: slider
min: 0.0
max: 1.0
default: 0.5
- name: ref_audio_input
type: text
label: Reference Audio Path
optional: true
- name: lora_name_or_path
type: text
label: LoRA Repo/Path
optional: true
- name: lora_weight
type: slider
min: 0.0
max: 2.0
default: 1.0
- name: bf16
type: bool
default: true
- name: torch_compile
type: bool
default: false
- name: device_id
type: number
default: 0
label: GPU Device Index
response:
type: audio
mime_from_field: audio_format
output_field: output_path
reproducibility:
seedable: true
deterministic: true
notes: >
actual_seeds parameter exposed; identical seeds + params = identical audio.
Local infer-api.py patches upstream's broken 24-arg pipeline signature
(was 18 in upstream — caused crashes with audio_duration in `format` slot).
estimated_latency:
cold_start_s: 30
warm_per_unit: "~10–60s depending on audio_duration + infer_step"
license: Apache-2.0
notes: |
27-field surface — UI must do progressive disclosure (basic/advanced).
Gradio UI fallback: docker exec -it ace-step python3 acestep/gui.py.
- id: comfyui
name: ComfyUI (workflow engine — catalog-deferred)
description: >
Node-based diffusion workflow engine. Native API is workflow JSON DAG, not
form fields. Catalog-deferred until per-asset-type workflow templates are
defined and a wrapper maps form inputs to template node parameters.
category: image
status: catalog-deferred
version: 1
host: irv-ml1
endpoint: http://10.100.79.3:8188
method: WebSocket + POST
content_type: application/json
model:
id: "various (SD, SDXL, Flux, ControlNet, LoRA, upscalers)"
revision: null
image: mmartial/comfyui-nvidia-docker:ubuntu24_cuda12.8-20260312
response:
type: image
mime: image/png
reproducibility:
seedable: true
deterministic: true
notes: >
Seed is a workflow node parameter. Reproducibility requires persisting
full workflow JSON + seed alongside the asset.
license: GPL-3.0
notes: |
To bring into the catalog: define workflow templates per asset-type
(portrait, landscape, sfx-thumbnail, ...), build a wrapper that does
form-field-to-node-parameter substitution, submit via POST /prompt, poll
/history. Until then, expose ComfyUI as an external link in the UI.
User state at /worktank/comfyui/basedir/.
# Reproducibility audit — answers per service: (a) seedable, (b) model
# deterministic without seed, (c) image tag mutable (security/reproducibility risk).
reproducibility_audit:
- service: kokoro
seedable: false
model_deterministic: true
image_tag_mutable: true
notes: ":v0.2.4-master is mutable; pin to digest for v3."
- service: chatterbox
seedable: false
model_deterministic: true
image_tag_mutable: false
notes: "PerTh watermark unconditional (Resemble policy)."
- service: index-tts
seedable: false
model_deterministic: true
image_tag_mutable: false
notes: "22050 Hz hardcoded — caller must resample."
- service: qwen3-tts
seedable: false
model_deterministic: true
image_tag_mutable: false
- service: cosyvoice
seedable: false
model_deterministic: true
image_tag_mutable: false
notes: "instruct field broken for English; XML tags only."
- service: fish-s2
seedable: false
model_deterministic: true
image_tag_mutable: false
notes: "Research-only license — non-commercial."
- service: kyutai-tts
seedable: false
model_deterministic: true
image_tag_mutable: false
- service: vibevoice
seedable: false
model_deterministic: true
image_tag_mutable: false
notes: "Voice cloning training not released."
- service: voxtral
seedable: false
model_deterministic: true
image_tag_mutable: false
notes: "CC BY-NC — non-commercial."
- service: parakeet
seedable: false
model_deterministic: true
image_tag_mutable: false
- service: stable-audio-open
seedable: true
model_deterministic: true
image_tag_mutable: false
notes: "Wrapper serializes concurrent requests (StableAudioPipeline not reentrant)."
- service: ace-step
seedable: true
model_deterministic: true
image_tag_mutable: false
notes: "Local infer-api.py patches upstream's broken pipeline signature."
- service: comfyui
seedable: true
model_deterministic: true
image_tag_mutable: false
notes: "Reproducibility requires persisting full workflow JSON + seed."