feat: Phase 3b — proper Web UI for memories, projects, settings

Replaces the debug /me + /connect pages with a real authed app shell.

Pages
- /                       — anonymous landing; redirects to /dashboard once signed in
- /dashboard              — recent memories + top projects, quick "new memory" action
- /memories               — searchable list with hybrid (vector+FTS+tags) scoring;
                            per-result rank breakdown shown inline
- /memories/[id]          — view + inline edit toggle + delete
- /memories/new           — create form with project autocomplete
- /projects               — list with memory counts and last-activity
- /projects/[key]         — that project's memories
- /settings               — read-only Authentik profile + link to tokens
- /settings/tokens        — list / create / revoke CLI tokens

Old URLs preserved as redirects:
- /me      → /dashboard
- /connect → /settings/tokens

Stack additions
- Tailwind v4 with CSS-first @theme tokens (dark only for now)
- App shell in app/(authed)/ — auth guard + top nav with global search box
- Lightweight UI primitives in app/_components/ui/ (Button, Input, Card,
  Badge, EmptyState, Container, PageHeader)
- Search logic extracted from MCP tool into lib/memories.ts so Web UI and
  MCP both call the same RRF code path
- Memory CRUD via Server Actions in lib/memory-actions.ts; audit_log
  rows are tagged actor='web' to distinguish from MCP writes

Per-token revoke
- New cli_tokens table (id, user_id, jti unique, name, created_at,
  last_used_at, expires_at, revoked_at) — migration 0001_cli_tokens.sql
- mintCliToken now records jti + name; verifyCliToken enforces revocation
  for tracked tokens. Legacy tokens minted before this change (no jti)
  are accepted on signature alone until they expire naturally.
- /settings/tokens lists active + revoked tokens with one-click revoke

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/app/me/page.tsx

@@ -1,31 +1,8 @@
 import { redirect } from "next/navigation";
-import { auth, signOut } from "@/auth";
 
 export const dynamic = "force-dynamic";
 
-export default async function MePage() {
-  const session = await auth();
-  if (!session?.user) {
-    redirect("/api/auth/signin");
-  }
-
-  return (
-    <main className="container">
-      <h1>Signed in</h1>
-      <p className="muted">
-        Debug view — confirms the Authentik round-trip and the OIDC claims we
-        received.
-      </p>
-      <h2>Session</h2>
-      <pre>{JSON.stringify(session, null, 2)}</pre>
-      <form
-        action={async () => {
-          "use server";
-          await signOut({ redirectTo: "/" });
-        }}
-      >
-        <button type="submit">Sign out</button>
-      </form>
-    </main>
-  );
+// Legacy URL — Phase 1's debug page. Replaced by /dashboard + /settings.
+export default function MeRedirect() {
+  redirect("/dashboard");
 }