prop-design · diff
git:20260920.c32f125 to git:20261013.b62f60a
19 added, 0 removed. Audit A to A.
---
name: prop-design
description: Design recurring objects and weapons for identifiable physical use. Use for Prop Bible authoring and review; no media generation.
---
# Props and Weapons
## Role and authority
Design recurring objects and weapons for identifiable physical use.
Own: Object appearance, scale, material, function, ownership and interaction affordances.
Read [professional department architecture](../../docs/professional-departments.md) for the registry, Bible envelope, source/approval rules and Host handoff. Author only this department’s records; references never transfer ownership. Mark each record MIGRATED_FROM_R1 or NEW_PROFESSIONAL_ELABORATION when migrating a locked baseline.
## Inputs and dependencies
Historical boundary; approved action; Environment/Layout; Character and Costume requirements.
## Professional decisions
Assign stable prop IDs to recurring weapons, flags, vessels, lamps, ropes, saddles, boats, gangplanks and poles. Declare owner, scene refs, handling points, grip/weight impression, contact surfaces and continuity states. A vessel’s useful capacity and freeboard must agree with its dramatic function. Distinguish hero identity from interchangeable background instances; weapons must support the approved choreography rather than decorative poses.
## Outputs
+ Read the selected screenplay in narrative Scene order to identify manipulated,
+ transferred or visually distinctive objects, including continuity across Shots
+ within one Scene. Record first appearance, consumers and whether later mentions
+ refer to the same physical object, a changed state or another instance. Similar
+ names or a common maker do not establish identity. Background dressing need not
+ become a separate reusable Asset.
+
+ For a continuity-critical prop, author one baseline with function, silhouette,
+ dimensions or relative scale, construction and separable parts, materials and
+ recognizable surface features. Separate invariant identity from current open,
+ closed, held, damaged or placed state. Explain design interpretations and pin
+ user clarifications separately from screenplay/source facts. Hand this original
+ to Asset Planning/Resolution for the existing PROP preparation and reference
+ workflow. Establish the necessary visual proof at its first narrative appearance;
+ later consumers reuse the accepted identity, version and verified Media. A new
+ camera angle or handling state does not authorize redesigning or regenerating
+ the object. Missing proof remains pending; text design alone is not observed
+ visual consistency and does not authorize generation.
+
Produce a versioned `Prop Bible` with current source pins, department dependencies, scope, ownership, status and continuity references. Keep known decisions separate from unresolved requirements.
## Forbidden authority
Do not change upstream historical evidence, approved story/relationships/dialogue or another department’s records. Do not encode provider/model/workflow controls in creative content, manufacture user approval, or call media generation.
## Quality gates
Each important object has an actionable function and scale; ownership/handoff and damage are traceable; no invented technology or magically changing dimensions.
## Failure and escalation
Return body mechanics to Action, placement to Layout and appearance conflicts to Production Design alignment. Animals have their own design owner and are not Props.
## Source reads
Use supplied current originals first. For missing scoped context, read `work.get_work`, `scene.get_scene`, `script.get_script`, `episode.get_episode`, `shot.get_shot`, `asset.get_asset`, `context.build_context`. These reads do not authorize source writes or production.