Codex Archive System V3.5 Control Surface Notes

v3.5 extends Codex Archive System v3.4 Image Experience Notes. Use v3.4 as viewing-surface context and v3.5 for current feed-control and header behavior.

v3.5 is the control-surface release.

Operator value prop:

• Search, filters, and header concealment now behave like one coherent reading surface instead of separate mobile and desktop exceptions.

Work chunks and wins:

1. Feed controls now collapse the same way on desktop and mobile Value prop: There is one operator gesture for opening the filter surface, regardless of viewport.

   • Promote the existing Search & filters toggle into the desktop feed surface.
   • Keep inactive controls collapsed by default.
   • Auto-open the panel when a search, type, or theme filter becomes active.
   • Let operators collapse the panel again without losing state.

2. Collapsed controls now reflect active state Value prop: A closed panel can still report what it is doing.

   • Show a compact active count when the control surface is collapsed.
   • Surface a short summary of active search/filter state in the collapsed bar.
   • Keep the Clear action and full active-filter line inside the open panel.

3. Header conceal/reveal motion was tightened Value prop: The top edge gets out of the way faster, with less drag.

   • Smooth header shadow and top-edge veil intensity from scroll progress instead of threshold jumps.
   • Reduce the hide trigger and sharpen the transform easing so the header tucks upward more quickly.
   • Keep a narrow residual strip in view so the page retains top-edge weight without a full chrome bar.

4. Content now fades under the top edge with lighter pressure Value prop: The reading field softens into the boundary instead of hitting a hard cut.

   • Place the top-edge veil under the sticky header and above the scrolling content.
   • Lighten the fade so it supports reading depth without feeling smoky.
   • Keep the effect tied to scroll state, not always-on decoration.

No schema expansion is proposed in v3.5. No new object type is proposed in v3.5.