Sync the docs/review/ suite to the current state of the feat/sandbox branch
(both LangBot and langbot-plugin-sdk), ~30 commits ahead of the prior review.
- box-architecture.md: rewrite for the new box.{backend,runtime,local,e2b}
config schema, add E2B backend, 6 native tools (incl. glob/grep), Skill
Tool Call activation, shared multi-process MCP container, SkillManager,
BoxSkillStore (SDK), 25 actions, 9 error types, heartbeat/reconnect
- box-issues.md: move resolved items (reconnect, heartbeat, Windows, nsjail
image conflict, frontend monitoring card) into a Resolved section; add
new P0 (INIT/backend ordering), P1 (extra_mounts immutability after
container creation), P2 (skill_store test gap, integration tests not in CI)
- box-session-scope.md: add §0 Implementation Status — Phase 1 shipped,
MCP unification landed earlier than originally scoped
- box-test-coverage.md: realign file inventory (4,400 -> 6,500 LOC),
add 7 new test files including SDK backend_selection/e2b/skill_store
- box-tob-analysis.md: connection recovery now满足基本要求; add E2B and
backend self-heal to capabilities; tick off Phase 1 reconnect/heartbeat
- box-vs-plugin-runtime.md: heartbeat/reconnect/Windows support now aligned
with Plugin Runtime; revise remaining gaps (WS auth, shared base class)
