feat(tui): personal TUI rework, integrating upstream model reasoning-effort selection

Consolidates the personal dsh-tui customizations (module split into
components/session/extension, prompt template + running-glyph indicator,
copyable transcript, tool-card headers, timing placement, XML tool output,
status/footer rework) and ports upstream's model reasoning-effort selector
(Shift+Tab effort cycling, effort-aware /model, footer, and /status) onto
the personal module layout.

scripts/check-workspace-constraints.ts

@@ -97,6 +97,7 @@ function workspaceManifests(): WorkspaceManifest[] {
 
 const packageFileExtras: Readonly<Record<string, readonly string[]>> = {
   '@deepseek-ai/dsh-helper': ['lib/assets'],
+  '@deepseek-ai/dsh-tui': ['lib/prompt.js'],
   '@deepseek-ai/dsh-scripts': [
     'lib/dev/tsdown-config.js',
     'lib/local-plugin-loader-hooks.js',