DOUBLE TAKE FRAMES DESIGN RELEASE 3.0.0
Released 2026-09-24

Clipless keyed wall-rig and latch release.

CHANGES
- Replaced the C-clip retention system with a coordinated bayonet lug on the
  wall-rig pivot and a matching keyway in the latch.
- Made the latch keyway deliberately generous and gave its upper edge a
  printable diagonal roof. Install the latch over the lug, then rotate it away
  from the loading position so it cannot slip off.
- Added the latch's second retaining wall so the weight remains laterally
  captive in either cassette orientation.
- Shortened the roller's keyed-shoe span by 1.2 mm total (0.6 mm per end) for
  clearance at the cassette side walls.
- Renamed Dry Wall Rig to Wall Rig and Latch and Keeper to Latch.
- Removed the obsolete keeper from Everything Else while retaining the wall
  rig's support enforcer and the capstans' prepared support settings.
- Carried the main frame, frame stand, capstans, and clock-string-guide
  geometry forward unchanged.

COMPATIBILITY
The 3.0.0 wall rig and latch are a coordinated pair and must replace their 2.x
versions together. The new latch does not use a C-clip. The remaining carried-
forward parts retain their established interfaces.

KNOWN DOCUMENTATION NOTE
Some older instruction images may still depict the former C-clip. Follow the
current written instruction: align the latch keyway with the bayonet lug for
installation, then rotate the latch away from the loading position.

VERSIONING
This project follows Semantic Versioning 2.0.0: https://semver.org/
MAJOR = incompatible printed-part or hardware interface change.
MINOR = backward-compatible new part, option, or substantial improvement.
PATCH = backward-compatible geometry, tolerance, documentation, or packaging fix.