Frame v2 updates:
- new context.client: fid of the client, whether frame is added, notification token+url
- context.location: new type 'launcher'
- manifest: new `imageUrl` and `buttonTitle` for rendering the frame outside of casts, please add soonish
docs updated: https://docs.farcaster.xyz/developers/frames/v2/spec
Got the printed PCBs of my own design: split, choc, using Waveshare RP2040-Zero, and a mid-mount USB receptacle. Now on to trimming (due to a small mistake), soldering and programming.