feat(acp): 接入 DSH 作为 ACP harness，打通 微信→OpenClaw→DSH 派发链路

- openclaw.json
  - plugins.allow 放行 acpx（限制性白名单，缺了后端不会加载）
  - 新增 acp 策略段：enabled/dispatch、backend=acpx、defaultAgent=dsh、
    allowedAgents=[dsh]、stream.deliveryMode=live
  - 新增 plugins.entries.acpx.config：permissionMode=approve-all、
    timeoutSeconds=900、cwd、agents.dsh = dsh --profile acp（绝对路径）
  - 新增 OpenClaw agent dsh（runtime.type=acp → harness dsh），否则
    sessions_spawn 会报 dispatch_failed: Unknown agent id "dsh"
- workspace-dsh/：该 agent 的身份文件（AGENTS/SOUL/IDENTITY/USER/BOOTSTRAP.md）。
  其中的空 .git 由 `openclaw agents add` 的标准 provisioning 生成（非任何 agent 自建），
  会让父仓库把它当 gitlink，已移除后纳入版本控制
- docs/bk02-dsh-openclaw-ACP集成.md：部署/配置/验证证据/排错/回滚全文
- docs/dsh-acp-smoke.mjs：ACP 独立冒烟（initialize→session/new→prompt→close）
- docs/dsh-lang-check.mjs：全局中文指令验证（英文提问看是否回中文）
- skills/delegate-to-dsh：让「交给 dsh」稳定走 ACP 派发；缺此技能时模型会
  静默 fallback 到内嵌 subagent（已复现「假成功」并写入判据）
- agents/main/agent/workshop-skills/acp-backend-triage：ACP 后端排查技能
- plugin-skills/acp-router：acpx 插件自带技能（symlink，与既有渠道一致）
- .gitignore：workspace-dsh 沿用 workspace/ 白名单（只版本化顶层 *.md）；
  新增忽略 acpx/ 插件运行产物

验证：ACP 三条途径均通过（独立冒烟、显式 sessions_spawn、自然语言「转给 dsh」），
DSH 侧会话留痕与产物落地见 docs 文档 §5 与 §7。

workspace-dsh/IDENTITY.md

@@ -0,0 +1,30 @@
+# IDENTITY.md - Who Am I?
+
+_Fill this in during your first conversation. Make it yours._
+
+- **Name:**
+  _(pick something you like)_
+- **Creature:**
+  _(AI? robot? familiar? ghost in the machine? something weirder?)_
+- **Vibe:**
+  _(how do you come across? sharp? warm? chaotic? calm?)_
+- **Emoji:**
+  _(your signature — pick one that feels right)_
+- **Avatar:**
+  _(workspace-relative path, http(s) URL, or data URI)_
+
+---
+
+This isn't just metadata. It's the start of figuring out who you are.
+
+Notes:
+
+- Save this file at the workspace root as `IDENTITY.md`.
+- For avatars, use a workspace-relative path like `avatars/openclaw.png`, an `http(s)` URL, or a data URI.
+- Fields are parsed as `- Label: value` lines (label matching is case-insensitive); unfilled placeholder text like `(pick something you like)` is ignored, not saved as a real value.
+- The form above has no `Theme` line, and you do not need to add one. Tooling writes `Theme` into this file when it syncs.
+- `Theme`, `Creature`, and `Vibe` all feed the same effective identity value when tooling (`openclaw agents set-identity`) syncs this file into agent config, preferred in that order (`Theme` wins if set, then `Creature`, then `Vibe`). Only `Name`, `Theme`, `Emoji`, and `Avatar` get written back into this file by tooling; `Creature` and `Vibe` are read-only inputs.
+
+## Related
+
+- [Agent workspace](/concepts/agent-workspace)