feat(web): migrate to @assistant-ui/react 0.14 (tap 0.9.8 with update-depth fix)

- @assistant-ui/react ^0.11.53 -> ^0.14.29, react-markdown ^0.11.9 -> ^0.14.7
- resolves @assistant-ui/tap 0.9.8, which ships the upstream fix for
  bulk message prepends (per-scheduler MAX_UPDATE_DEPTH guard, PR
  assistant-ui/assistant-ui#5370) that the local patch covered for 0.3.5
- API migration: useAssistantApi -> useAui, useAssistantState -> useAuiState
  with s.* selector access; TextMessagePart type-guard for content.find;
  portable DefaultComponentsMap annotation for memoizeMarkdownComponents

Verified: tsc clean, 1762 unit tests, history-load e2e 12/12 against the
unpatched upstream scheduler.

package.json

@@ -1,7 +1,14 @@
 {
     "name": "hapi",
     "private": true,
-    "workspaces": ["cli", "shared", "hub", "web", "website", "docs"],
+    "workspaces": [
+        "cli",
+        "shared",
+        "hub",
+        "web",
+        "website",
+        "docs"
+    ],
     "scripts": {
         "build:site": "bun run --cwd website build && bun run --cwd docs docs:build && cp -r docs/.vitepress/dist website/dist/public/docs",
         "dev": "concurrently \"bun run dev:hub\" \"bun run dev:web\" --kill-others-on-exit",
@@ -37,8 +44,5 @@
         "playwright": "1.60.0",
         "react-devtools-core": "^7.0.1",
         "vite-plugin-pwa": "^1.2.0"
-    },
-    "patchedDependencies": {
-        "@assistant-ui/tap@0.3.5": "patches/@assistant-ui%2Ftap@0.3.5.patch"
     }
 }