Wave 9: fix audit findings, harden ABI, deduplicate config (W12.1-W12.6)

- W12.1 context_plugin (engineer-zhou): wrap C ABI surface in try/catch,
  add OOM-safe strdup_message_fields helper, make g_max_tokens drive
  message-count trim (option A).
- W12.2 config refactor (architect-lin): introduce
  plugins/config/include/toml_parse.h to eliminate 74-line parser
  duplication; config_plugin delegates to host->config_get/set,
  collapsing the dual-store data island; ConfigStore::get() now copies
  via thread_local std::string to remove c_str() dangling under
  concurrent set(). Zero ABI changes.
- W12.3 CLI command parsing (engineer-zhao): guard /clear and /context
  on missing session service; refactor /file dispatch so bare
  /file write hits usage instead of unknown-command.
- W12.4 build path unification (devops-hu): set per-target
  RUNTIME_OUTPUT_DIRECTORY on dstalk-cli; remove stale
  build/dstalk-cli/dstalk-cli.exe so build/bin/ is the sole binary.
- W12.5 STATUS.md auto-refresh (engineer-li): run W11.6 script to
  regenerate STATUS from live profile/group data.
- W12.6 plugin-abi.md (writer-deng): add §8 exception safety across
  ABI boundary and §9 string return lifetime; reference real
  audit-found violations as anti-examples.

Verified: cmake build 0 error 0 warning, ctest 4/4 pass.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

agents/devops-hu/profile.md

@@ -33,4 +33,14 @@ performance_log:
       5 个插件缺少 #include <boost/json/src.hpp> (Boost 1.86 不再识别 HEADER_ONLY)。
     rating: done
 current_groups: []
+  - date: 2026-05-27
+    event: "W12.4 修复 build 产物路径不一致 (BUG-1)"
+    detail: >
+      根因: build/dstalk-cli/dstalk-cli.exe 是 W3 设置 CMAKE_RUNTIME_OUTPUT_DIRECTORY=bin
+      之前的陈旧产物 (MD5 803ca2ea)，W3 后 ninja 链接行已正确输出到 build/bin/dstalk-cli.exe，
+      但旧文件未被 ninja 自动清理，导致两路径存在不同二进制。
+      修复: dstalk-cli/CMakeLists.txt L9-11 新增 set_target_properties RUNTIME_OUTPUT_DIRECTORY
+      ${CMAKE_BINARY_DIR}/bin 作为防御性显式声明；删除陈旧 build/dstalk-cli/dstalk-cli.exe。
+      验证: clean rebuild 后仅 build/bin/dstalk-cli.exe 存在，ctest 4/4 pass。
+    rating: done
 ---