fix(bb-ui2): separate ThreadDrawer from RightPanel

- Created ThreadDrawer component (24rem) that slides from right edge of middle
- RightPanel now reserved for Activity Feed + Agent roster (bb-ui2.29)
- Updated URL state: added drawer and agentId params
- Thread shows in drawer when card selected

Architecture now matches PRD:
- Right Panel (17rem): Activity Feed + Agent roster
- Thread Drawer (24rem): Opens from middle when card clicked

Beads: bb-ui2.31 thread drawer created, bb-ui2.13 closed
This commit is contained in:
zenchantlive 2026-02-16 10:16:33 -08:00
parent f6c5398f0c
commit a7787733b9
6 changed files with 208 additions and 70 deletions

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