Docs sync 2026-08-27: modifier areas in Scene Editor, EngineInfo.scen…

[nearnshaw]

…eHidden

Sources reviewed (origin/main only, since 2026-08-20 state):

creator-hub:

• a843390a Avatar Modifier Area + Camera Modifier Area editor support - new page creator/scene-editor/interactivity/modifier-areas.md (adding from catalog/component menu, sizing via Transform scale, Modifiers multi-select, Exclude Player IDs, Camera Mode dropdown, use cases, SDK7 cross-links); listed in scene-editor components.md and smart-items.md; SUMMARY.md entries added (root + creator).
• 2ed31269 ENS list refresh - no change: no docs page described the stale behavior or advised restarting the app.
• 329133f4 (videos), 7d4ceb47 (CI) - not relevant.

protocol + js-sdk-toolchain:

• 0b3d285 + ffb26183 EngineInfo sceneHidden - documented in creator/sdk7/interactivity/runtime-data.md (field description, example, pause-while-hidden pattern); also fixed field names from proto snake_case to SDK camelCase to match the actual TS API.
• c8d18173, a2ccd0b1, 08de7338, a9eb0119 behavior fixes - no change: docs did not describe the old broken behaviors or workarounds.
• b7a44a20, 9eb2738b, de6e5162, 6286b337 - not docs-relevant.

sdk-skills: only own sync merge - nothing to absorb.
sdk7-test-scenes: no new commits.

Needs human review:

• modifier-areas.md has no screenshots yet; suggested captures: asset catalog (Utils), both inspector panels, placeholder cube in viewport, to be added under creator/images/editor/.