## 1. Platform History Contract

- [x] 1.1 Change the server log SSE replay to apply one capped total history budget across all streams and emit the selected tail entries in chronological order.
- [x] 1.2 Add backend tests for default/capped totals, newest-tail selection, chronological ordering, and ready-event sequencing.

## 2. Management Terminal View

- [x] 2.1 Add a scroll container ref and follow-latest state to the management terminal, with initial/live bottom scrolling only while locked and unlock/relock detection at the bottom threshold.
- [x] 2.2 Increase the terminal retention buffer to 10,000 lines and keep oldest-line eviction for all incoming line types.
- [x] 2.3 Add focused frontend tests for initial bottom positioning, scroll unlock/relock, bounded buffer behavior, and bounded SSE history options.

## 3. Verification

- [x] 3.1 Run focused platform and platform_web tests, then `scripts/check-structure.sh`.
- [x] 3.2 Run `openspec validate improve-server-terminal-log-window --strict` and record verification evidence before marking tasks complete.