Introduce Client wrapper with socket deadline support
Add reconnection logic for body read timeouts
Implement test cases for underflow scenarios
Update orchestrator to handle reconnections
Before copying, EXAMINE every folder to sum the account's total message count
and emit a 'plan' event; progress events now carry account_total so the UI
shows a real overall bar, percent and ETA (not just per-folder).
- imapx.FolderMessageCount: read-only count of a folder
- orchestrator: plan pass + grandTotal, plan event, account_total in progress
- web: live progress keyed on account total; PLAN log line; overall bar/ETA
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MMHQTtnQtQqL8muAXHr9kd