W18: context cleanup + CLI fixes + loader audit + CI matrix (W18.1-W18.4)
- W18.1 (王测+林深): Remove g_max_tokens dead API, UTF-8 bounds protection, deduplicate token counting, 0xC0/0xC1 handling, add 13 test blocks (36 checks)
- W18.2 (赵码+朱晴): Fix /context no-session error message, /status 3-state connection display
- W18.3 (曹武+徐磊): plugin_loader security audit — 9 dimensions, rating C, 1 HIGH + 2 MEDIUM findings
- W18.4 (马奔+胡桐): CI dual-platform matrix (Ubuntu clang-18 + Windows clang-cl), ccache, build timing baseline
Build 0 error, ctest 5/5 pass, metadata check clean.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
XiuChengWu
c545d16120