refactor(packages): dissolve ui/ and rename sdk/ to scaffold/

git mv per the regrouping RFC: the five human-collaboration seams and
tui join packages/interaction/, app-boot becomes packages/boot/, and
jsonrpc joins the renamed scaffold/ (formerly sdk/) as its server half
beside client/protocol/create-sdk/helper/scripts/telemetry, whose
folders drop the legacy sdk- prefix. Three new group README triplets
replace the ui/ and sdk/ ones; tsconfig references/paths/globs,
knip keys, vitest globs, gate scripts, catalogs, docs, and the
lockfile follow. Adds the four settled FIXME rename markers
(dsh-sdk-server, dsh-sdk-telemetry, dsh-sdk-helper, dsh-sdk-scripts).

The scaffold folders diverge from their npm names until those renames
land, so tsconfig.base.json maps the three affected names explicitly
beside the group wildcard. Also repairs two pre-existing stale-path
classes the strengthened sweep surfaced: docs/web-styling.md's retired
web-ui host package and type-model spec fixture-literal joins.

app-boot's three Loader-composition specs time out at the default 5s
under full-suite parallel load on this filesystem (pre-existing;
pass isolated with --testTimeout=30000); interaction/scaffold/boot
suites otherwise green (687 passed).

.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.zh.md

@@ -48,4 +48,4 @@ TUI 和 Web 启动后通过 Cordis HMR（热模块替换）注册确切的个人
 
 ## Testing
 
-`packages/ui/app-boot/tests/user-patches.spec.ts` 固定解析、启动时应用、确切路径的新增／失败／恢复／移除、最后可用状态回滚、失败广播以及应用自有 patch 的保留。`apps/cli/tests/built-bin.e2e.ts` 启动真实 dsh bin 并基于 profile 端到端验证实时 patch 层。测试启动器会隔离 `$DSH_HOME`，因此开发者的真实 overlay 不会泄漏进 fixture。
+`packages/boot/app-boot/tests/user-patches.spec.ts` 固定解析、启动时应用、确切路径的新增／失败／恢复／移除、最后可用状态回滚、失败广播以及应用自有 patch 的保留。`apps/cli/tests/built-bin.e2e.ts` 启动真实 dsh bin 并基于 profile 端到端验证实时 patch 层。测试启动器会隔离 `$DSH_HOME`，因此开发者的真实 overlay 不会泄漏进 fixture。