refactor(ts-migration): Phase 11 batch 8 — the assistant panel components

The thirteen `.jsx` files under `src/components/ai-assistant/`, which
completes that directory: 24/24 files migrated and all 24 linted under
their new extensions.

39 errors, and converting 21 `/** @param {any} props */` hatches to
`: any` cleared 33 of them — the same pattern as batch 6, and the same
reason: without the JSDoc, TypeScript infers every destructured prop as
required, so `ResponseBlocks` and `AssistantMessage` alone produced 31
complaints about call sites that were always correct.

The remaining six were already there before this batch and are
unchanged.

13/13 erase byte-identically. `.jsx` -> `.tsx` is the move that can drop
unused imports through esbuild's loader difference; it did not here, and
the bundle hash is unchanged.

Measured against `3f835ee`:

  typecheck   6 errors, unchanged; no new error anywhere
  lint        exit 0, 0 errors, 289 warnings, 24/24 linted by name
  npm test    1684/1691, the same 7 failures verbatim
  build       exit 0, identical bundle hash 74d17e2d…
  type erasure  96/96 byte-identical across Phase 11 so far

No baseline artifact touched.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HBG1wnuRfJKCstGB8Fekr8

src/components/ai-assistant/index.tsx

@@ -0,0 +1,32 @@
+/**
+ * Owliver — the dashboard's contextual productivity panel.
+ *
+ * Named Owliver in the UI, but architecturally independent of the standalone
+ * Owliver voice product in components/krow/Owliver*. Nothing is shared.
+ *
+ * Architecture:
+ *
+ *   AssistantPanelProvider   workspace state, resolved page context
+ *   AssistantPanel           the workspace column the Admin layout renders
+ *   AssistantTrigger         legacy opt-in button. Not used by Admin: Owliver is
+ *                            part of the page there, so there is no trigger to
+ *                            press. It self-hides on unsupported routes, which
+ *                            is why the pre-redesign pages still holding one
+ *                            render nothing.
+ *   KrowAssistant            the one assistant UI, reused on every page
+ *   provider.js              the transport seam — local today, HTTP later
+ *
+ * Independent of Owliver, which remains a separate product. Nothing here imports
+ * Owliver code, and the two never share UI.
+ */
+
+export { AssistantPanelProvider, useAssistantPanel } from './AssistantPanelContext';
+export {
+  usePageAction, usePageContext, usePublishPageActions, usePublishPageContext,
+} from './PageContext';
+export { AssistantTrigger } from './AssistantTrigger';
+export { AssistantPanel } from './AssistantPanel';
+export { default as KrowAssistant } from './KrowAssistant';
+export { ASSISTANT_CONTEXTS, getContext } from './contexts';
+export { EXCLUDED_ROUTES, enabledRoutes, resolveAssistantContext } from './placement';
+export { createAgentProvider, createUnconfiguredProvider } from './provider';