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）。

package.json

@@ -23,8 +23,8 @@
     "dev": "node lib/cli.js",
     "typecheck": "tsc -p tsconfig.json --noEmit",
     "check:layering": "node scripts/check-layering.mjs",
-    "verify": "npm run build && node scripts/check-layering.mjs && node --test test/db.test.mjs test/register-guard.test.mjs test/i18n-brand.test.mjs test/local-user-fs.test.mjs test/remote-user-fs.test.mjs test/crash-policy.test.mjs test/locale-pref.test.mjs test/worker-provision.test.mjs test/reachability.test.mjs test/instance-port.test.mjs test/relay.test.mjs test/remote-spawner.test.mjs test/overlay-network.test.mjs test/overlay-auth.test.mjs test/overlay-bootstrap.test.mjs && node scripts/verify-inject.cjs lib/supervisor/proxy.js && node scripts/verify-static.mjs && node scripts/verify-platform-admin-section.mjs && node scripts/verify-mem-model.mjs && node scripts/verify-model-landing.mjs && node scripts/verify-dsh-install.mjs && node scripts/verify-models-dict.mjs && node scripts/verify-models-render.cjs && node scripts/verify-dsh-compat.mjs && node scripts/verify-my-skills.mjs && node scripts/verify-portal-entry.mjs",
-    "test": "npm run build && node --test test/db.test.mjs test/register-guard.test.mjs test/i18n-brand.test.mjs test/local-user-fs.test.mjs test/remote-user-fs.test.mjs test/crash-policy.test.mjs test/reachability.test.mjs test/instance-port.test.mjs test/relay.test.mjs test/remote-spawner.test.mjs test/overlay-network.test.mjs test/overlay-auth.test.mjs test/overlay-bootstrap.test.mjs test/overlay-identity.test.mjs test/relay-failover.test.mjs test/overlay-jitter.test.mjs && node scripts/verify-inject.cjs lib/supervisor/proxy.js",
+    "verify": "npm run build && node scripts/check-layering.mjs && node --test test/db.test.mjs test/register-guard.test.mjs test/i18n-brand.test.mjs test/local-user-fs.test.mjs test/remote-user-fs.test.mjs test/crash-policy.test.mjs test/locale-pref.test.mjs test/worker-provision.test.mjs test/reachability.test.mjs test/instance-port.test.mjs test/instance-credential.test.mjs test/relay.test.mjs test/remote-spawner.test.mjs test/overlay-network.test.mjs test/overlay-device.test.mjs test/overlay-auth.test.mjs test/overlay-bootstrap.test.mjs test/im-store.test.mjs test/im-agent.test.mjs test/im-sdk.test.mjs test/im-ui.test.mjs test/im-connection-backend.test.mjs test/im-presence-ingest.test.mjs test/im-gateway-access.test.mjs test/plugin-data.test.mjs test/plugin-assembly.test.mjs test/plugin-shared-catalog.test.mjs && node scripts/verify-inject.cjs lib/supervisor/proxy.js && node scripts/verify-static.mjs && node scripts/verify-platform-admin-section.mjs && node scripts/verify-mem-model.mjs && node scripts/verify-model-landing.mjs && node scripts/verify-dsh-install.mjs && node scripts/verify-models-dict.mjs && node scripts/verify-models-render.cjs && node scripts/verify-dsh-compat.mjs && node scripts/verify-my-skills.mjs && node scripts/verify-portal-entry.mjs",
+    "test": "npm run build && node --test test/db.test.mjs test/register-guard.test.mjs test/i18n-brand.test.mjs test/local-user-fs.test.mjs test/remote-user-fs.test.mjs test/crash-policy.test.mjs test/reachability.test.mjs test/instance-port.test.mjs test/instance-credential.test.mjs test/relay.test.mjs test/remote-spawner.test.mjs test/overlay-network.test.mjs test/overlay-device.test.mjs test/overlay-auth.test.mjs test/overlay-bootstrap.test.mjs test/overlay-identity.test.mjs test/relay-failover.test.mjs test/overlay-jitter.test.mjs test/im-store.test.mjs test/im-agent.test.mjs test/im-sdk.test.mjs test/im-ui.test.mjs test/im-connection-backend.test.mjs test/im-presence-ingest.test.mjs test/im-gateway-access.test.mjs test/plugin-data.test.mjs test/plugin-assembly.test.mjs test/plugin-shared-catalog.test.mjs && node scripts/verify-inject.cjs lib/supervisor/proxy.js",
     "smoke": "node scripts/smoke.mjs",
     "smoke:admin": "node scripts/smoke-admin.mjs",
     "smoke:auth": "node scripts/smoke-auth.mjs",