Polish reply timeline interactions

[thomaspblock]

Summary

• Refines desktop reply/thread UI spacing, pills, and timeline affordances.
• Fixes sticky date label handoff so day pills push each other instead of overlapping.
• Aligns active agent process pills with the message text column and keeps footer activity from clipping.

Test plan

• pnpm -C desktop exec biome check src tests
• pnpm -C desktop exec tsc --noEmit

Made with Cursor

[thomaspblock]

Design-Fixes.mp4

[wesbillman]

@thomaspblock does it feel weird that the agents show below other users? Like when someone messages or joins the channel the bot goes below them.

In this case, Rick is responding to a previous message, but it feels like it's responding to my last message here.

Another example:

For the user it almost implies that "Rick" is responding to tyler here, which is why I think it was docked to the bottom before. Whatcha think!?

[thomaspblock]

@thomaspblock does it feel weird that the agents show below other users? Like when someone messages or joins the channel the bot goes below them.

In this case, Rick is responding to a previous message, but it feels like it's responding to my last message here.

Another example:

For the user it almost implies that "Rick" is responding to tyler here, which is why I think it was docked to the bottom before. Whatcha think!?

Yes thats very weird. I'll put it back down right above the composer windows.