chore(skills): update builtin create-bitfun-skin skill

src/crates/assembly/core/builtin_skills/create-bitfun-skin/SKILL.md

@@ -39,7 +39,7 @@ A component owns only the Parts returned for that component. Nested visual owner
 
 Surface-level states may use an `ancestorPart` selector rooted at `root`. Define the state rule using the registered state id; do not reproduce host selectors in the package.
 
-Important independent owners include `toolbar-mode`, `floating-mini-chat`, `session-menu`, `composer-voice-input`, `miniapp-bubble-welcome`, `session-title-config`, `assistant-card`, `workspace-item`, `external-mcp-overview`, `miniapp-customize-panel`, `user-message-edit-composer`, `voice-input-diagnostics`, `flow-chat-turn-rail`, and `copyable-text-preview`. Query each owner before styling it.
+Important independent owners include `toolbar-mode`, `floating-mini-chat`, `session-menu`, `composer-voice-input`, `miniapp-bubble-welcome`, `session-title-config`, `assistant-card`, `workspace-item`, `external-mcp-overview`, `miniapp-customize-panel`, `user-message-edit-composer`, `voice-input-diagnostics`, `flow-chat-turn-rail`, `copyable-text-preview`, `reasoning-preset-selector`, `reasoning-config-panel`, `reasoning-preset-editor`, `market-account-controls`, and `miniapp-market-view`. Query each owner before styling it. This list is a navigation aid, not an exhaustive contract; the registry is authoritative.
 
 The following Parts are not registered and must not be used:
 
@@ -67,7 +67,7 @@ Currently bundled:
 
 | Example | Load when | Do not inherit blindly |
 | --- | --- | --- |
-| [cinematic-animated-wallpaper](examples/cinematic-animated-wallpaper/SKILL.md) | Animated character artwork, source-derived glass materials, image-led cards, or illustrated dialogs | Its asset roles, crop defaults, palette, and 43-component/7-scene surface selection |
+| [cinematic-animated-wallpaper](examples/cinematic-animated-wallpaper/SKILL.md) | Animated character artwork, source-derived glass materials, image-led cards, or illustrated dialogs | Its asset roles, crop defaults, palette, and selected surface plan |
 
 Read [style-example-contract.md](references/style-example-contract.md) before adding or restructuring an example. An example is a design recipe validated against the registry, not a second contract snapshot.
 

src/crates/assembly/core/builtin_skills/create-bitfun-skin/agents/openai.yaml

@@ -0,0 +1,4 @@
+interface:
+  display_name: "BitFun Appearance Manual"
+  short_description: "Author and validate contract-safe BitFun skins"
+  default_prompt: "Use $create-bitfun-skin to inspect the current Appearance contract, choose a relevant style example, and author or repair a valid sparse skin."

src/crates/assembly/core/builtin_skills/create-bitfun-skin/examples/cinematic-animated-wallpaper/SKILL.md

@@ -7,7 +7,7 @@ description: Apply the cinematic animated-wallpaper style recipe to a BitFun App
 
 Load the parent `create-bitfun-skin` Skill first. The parent registry and package references define what can be changed; this example defines one optional visual strategy.
 
-Do not reuse this example's 43-component/7-scene coverage, asset roles, crop defaults, palette, opacity, or material choices unless they fit the user's artwork and intent. Its [surface-plan.json](references/surface-plan.json) is an example style selection validated against one registry revision, not a list of all current Appearance surfaces.
+Do not reuse this example's asset roles, crop defaults, palette, opacity, or material choices unless they fit the user's artwork and intent. Its [surface-plan.json](references/surface-plan.json) is an example style selection validated against one registry revision, not a list of all current Appearance surfaces. Re-query the parent registry whenever the host checkout or bundled snapshot changes.
 
 Read [style-playbook.md](references/style-playbook.md) for visual decisions and [palette-contract.md](references/palette-contract.md) before creating a custom palette.
 Read the parent [media-quality-policy.md](../../references/media-quality-policy.md) before overriding video or WebP quality.

src/crates/assembly/core/builtin_skills/create-bitfun-skin/examples/cinematic-animated-wallpaper/references/surface-plan.json

@@ -3,7 +3,7 @@
   "schemaVersion": 1,
   "scope": "example-style-selection",
   "styleId": "cinematic-animated-wallpaper",
-  "validatedAgainstRegistryRevision": "7fdf35b7be1c2693e33caae122dc970fb953865b",
+  "validatedAgainstRegistryRevision": "71fbdbb26757c930eedfef5cfda55ca12e008ae1",
   "scenes": {
     "workbench": {
       "parts": {