chore(仓库对齐): 文档库结构治理 + IM/插件线落地

文档库：目录改为编号制（01-规范/02-架构设计/03-数据库/04-调整方案/
05-交接单/06-ops/07-scripts/08-skills/09-archive），顶层散文件归入 01-规范/；
INDEX.md 与 docs-manifest.json 重刷（档案 146 篇）；旧目录名引用全量对齐。

IM 线：src/im/**（SDK / hub / store / presence / ws / gateway-token）、
src/web/routes/im.ts、src/db/plugin-data/**、src/supervisor/plugin-assembly.ts
及对应 test/**。

插件线：poc/{im-agent-bridge,im-connection-gateway,im-conversation-tabs,
business-plugins-im,carbon-mcp-probe}、src/web/routes/{sessions,overlay-device}.ts、
src/net/relay/{device-grant,instance-credential}.ts。

仓库卫生：清出 40 个历史误入库 / 已改名文件（34 个交接单归档 + 6 个旧结构，
本地均有副本）；dsh-server-docs/.gitignore 补 tmp/；交接单不入库（政策）。

poc/business-plugins-im/mud-rate/cordis.patch.yml

@@ -0,0 +1,8 @@
+// @dsh-local/im-plugin-mud — bundle patch (host row only)
+//
+// D 单示例插件之二（MUD）。走**实时档**（档案 108 游戏口径，jitter 预算 20 ms），
+// 发言规则 = 限速。⛔ 无 client 面。
+
+- insert:
+    - id: im-plugin-mud
+      name: '@dsh-local/im-plugin-mud'

poc/business-plugins-im/mud-rate/package.json

@@ -0,0 +1 @@
+{"name":"@dsh-local/im-plugin-mud","version":"0.1.0","private":true,"type":"module","main":"lib/index.js","exports":{".":"./lib/index.js"},"dsh":{"bundle":{"patch":"./cordis.patch.yml"}},"dependencies":{},"license":"MIT"}

poc/business-plugins-im/office-tasks/cordis.patch.yml

@@ -0,0 +1,8 @@
+// @dsh-local/im-plugin-office — bundle patch (host row only)
+//
+// D 单示例插件之一（办公群）。⛔ 无 client 面：本插件只在**服务端**把房间类型 +
+// 任务卡载荷 + 面板插槽声明给 IM SDK，UI 成品在 E 单。
+
+- insert:
+    - id: im-plugin-office
+      name: '@dsh-local/im-plugin-office'

poc/business-plugins-im/office-tasks/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "@dsh-local/im-plugin-office",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "main": "lib/index.js",
+  "exports": {
+    ".": "./lib/index.js"
+  },
+  "dsh": {
+    "bundle": {
+      "patch": "./cordis.patch.yml"
+    }
+  },
+  "dependencies": {},
+  "license": "MIT"
+}

poc/business-plugins-im/trpg-turn/cordis.patch.yml

@@ -0,0 +1,8 @@
+// @dsh-local/im-plugin-trpg — bundle patch (host row only)
+//
+// D 单示例插件之三（跑团）。发言规则 = **回合制**（非当前回合者发言被拒），
+// 含角色卡表与 DM/玩家业务角色。⛔ 无 client 面。
+
+- insert:
+    - id: im-plugin-trpg
+      name: '@dsh-local/im-plugin-trpg'

poc/business-plugins-im/trpg-turn/package.json

@@ -0,0 +1 @@
+{"name":"@dsh-local/im-plugin-trpg","version":"0.1.0","private":true,"type":"module","main":"lib/index.js","exports":{".":"./lib/index.js"},"dsh":{"bundle":{"patch":"./cordis.patch.yml"}},"dependencies":{},"license":"MIT"}