video-workbench/projects/2026-06-23-在路上/slides/s21/s21-v2-brief.md

S-21 Slide Brief V2

Status

• Brief status: prepared by child session.
• Slide-agent status: not started by this runtime.
• Runtime fallback: required.
• Review rule: disabled for this test.

Source Basis

• projects/2026-06-23-在路上/intake/阶段五-人物一致性单镜.md
• projects/2026-06-23-在路上/visual-system/visual-system.md
• projects/2026-06-23-在路上/visual-system/style/style-prompt-master.md
• projects/2026-06-23-在路上/visual-system/characters/character-reference-registry.md
• projects/2026-06-23-在路上/slides/slides.md
• projects/2026-06-23-在路上/slides/broad-generation-self-audit-v1.md
• investigations/2026-06-24-s14-reference-capable-generation/reviews/summary-and-rule-implications.md

Slide Function

S-21: 那一簇火，指引方向.

This shot verifies side/back dynamic character continuity. The fire confirms direction; it does not become a campsite, rest scene, portrait setup, gathering, or destination.

First Read

Night road and muddy roadside first, small restrained fire second, traveler third.

The viewer should read that the traveler pauses only to adjust the old backpack and continue toward the road direction touched by firelight.

Risk Class

• Risk class: medium human.
• Specific risk: side/back walking posture, backpack continuity, long coat silhouette, boots, and natural adjustment motion.

Reference Plan

• Style module: D | 夜路小火.
• Active style reference: projects/2026-06-23-在路上/intake/imgs/D.夜路篝火型蓝图.png.
• Primary character reference: projects/2026-06-23-在路上/visual-system/characters/character-anchor-v2-walk-side-reference-crop-tight.png.
• Supporting character reference if the slide agent can load a second visible reference: projects/2026-06-23-在路上/visual-system/characters/character-slice-walk-side-v2-from-anchor.png.
• Reference role: side/back walking traveler, old backpack, long coat, stride, boots, road-worn posture.

Visual Requirements

• 16:9 horizontal cinematic documentary road-film still.
• Deep blue-gray night or late dusk after dark.
• Muddy roadside and wet ground remain visible.
• Small local warm-orange firelight is a direction signal, not the subject.
• Fire size should stay restrained, roughly small enough to avoid campsite reading.
• Road must continue beyond or beside the fire.

Character Handling

• Visible character identity cannot be generated from text-only prompting.
• The actual primary character reference image must be loaded into visible generation context before host image generation.
• Prompt role should say: Image 1: identity reference for side/back walking traveler adjusting backpack.
• If a second reference is supported, use: Image 2: supporting transparent walking-side silhouette reference.
• Traveler should be middle-aged, road-worn, wearing dark long coat, old backpack, and old boots.
• No face-forward pose; no hero stance; no fashion travel posture.

Composition / Scale

• Traveler: side/back view, about 1/6 to 1/4 of frame.
• Fire: placed to one side or low side of frame, not centered as a campfire portrait.
• Road and darkness keep more visual weight than the person.
• Action should face the continuing road rather than the fire.

Light / Color / Texture

• Dark blue-gray night base.
• Small warm-orange edge light on muddy ground, boots, backpack rim, or coat edge.
• Keep dark depth in shadows.
• Low saturation: cold gray, earth brown, dark khaki, coal black, wet dark blue-gray.
• Documentary texture, real mud, road grit, old fabric, worn leather.

Forbidden Drift

• No camping advertisement.
• No tent, chairs, cookware, picnic setup, cozy campsite, or large theatrical campfire.
• No group gathering, reunion, victory, or arrival feeling.
• No centered heroic portrait or fashion travel photo.
• No text-only identity generation for the visible traveler.
• No Minimax MCP or external review service.
• No s21-v2-review.md for this test.

Acceptance Checklist

• The character reads as the same traveler type as the active registry references.
• Backpack, long coat, stride, and boots remain stable.
• The adjustment action looks natural and in-motion.
• The fire is small and directional, not a destination.
• The road continues beyond the fire.
• Review is suppressed as instructed.

Prompt Handoff

The slide agent must create s21-v2-prompt.md through the gpt-image-2 Advisor / host-native workflow, record the mode check result and Skill/template/reference files read, load the actual primary character reference into visible context before generation, generate only s21-v2-image.png, and write the compact return file. Do not write a review file.