Bone Flow Editor v1.0.40 Candidate

User-observed failure fixed in this candidate:
- VS Code extension version is explicitly incremented from 1.0.39 to 1.0.40 so VS Code recognizes the update.
- Flow Editor BOOT FAIL caused by HTTP 404 for /boneflow/js/bone-transition.js is removed.
- The bundled Flow Editor still carries BoneColorPicker 1.0.15, whose runtime does not call BoneTransition; therefore unbundled #118 files are not listed as boot dependencies in this self-contained VSIX.
- boneflow-ui-capability.js, already referenced by bone-flow-editor.html, is now actually bundled so the next request does not become a 404.
- No localhost or fixed preview port is embedded; extension preview server remains 127.0.0.1 with an OS-assigned dynamic port.

Verification is package/internal only. User VS Code verification remains required.
