agent-hypervisor: unbounded VFS edit log causes memory growth

[imran-siddique]

Problem

The _edit_log list grows unbounded with no rotation or pruning.

File: src/hypervisor/session/sso.py (line 44)

Impact

Long-running sessions will eventually OOM.

Suggested Fix

Implement ring buffer or rolling window (keep last 10K edits).

[imran-siddique]

Resolved on main — \SessionVFS._edit_log\ now uses \collections.deque(maxlen=10_000)\ instead of unbounded list. Closing.