Add command palette, footer clinic menu, patient Sheet, Analysis page, favicon

Several navigation/UX additions:

- Command palette (⌘K): components/command-palette.tsx wraps the app shell
  (mounted in app/(app)/layout.tsx) with a controlled COSS CommandDialog listing
  the nav pages; a "Quick nav" Kbd button in the sidebar footer also opens it.
  Installed @coss/kbd. Extracted the nav list into lib/nav.ts so the sidebar and
  palette share one source of truth.
- Clinic switcher moved from the sidebar body into the footer; its menu now
  opens a read-only "Clinic info" dialog and a "Create clinic" dialog instead of
  routing to /onboarding. Shared CreateClinicForm (components/clinic/) is reused
  by onboarding.
- Patients: clicking a row opens a right-side Sheet with the full record
  (components/patients/patient-detail-sheet.tsx) instead of navigating to the
  chat; PatientResult gained a vertical "column" layout for the Sheet.
- New Analysis page (app/(app)/analysis/) — a mock dashboard (revenue/profit,
  patient volume, appointments, operations) reusing Sparkline + Card + Badge.
- Logo: set metadata.icons so the new mark appears as the browser-tab favicon.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/components/chat/patient-cards.tsx

@@ -35,6 +35,9 @@ type PatientResultProps = {
   fileNumber: string;
   patient?: Patient;
   onPatientUpdated?: (patient: Patient) => void;
+  // "row" = horizontal scroll (chat); "column" = full-width vertical stack
+  // (the Patients detail Sheet).
+  layout?: "row" | "column";
 };
 
 const severityVariant: Record<AllergySeverity, BadgeVariant> = {
@@ -575,6 +578,7 @@ export function PatientResult({
   fileNumber,
   patient,
   onPatientUpdated,
+  layout = "row",
 }: PatientResultProps) {
   const [editOpen, setEditOpen] = useState(false);
   // Bumped on open so the editor remounts with the latest patient data.
@@ -593,7 +597,14 @@ export function PatientResult({
   }
 
   return (
-    <div className="no-scrollbar flex w-full items-stretch gap-4 overflow-x-auto p-2">
+    <div
+      className={cn(
+        "flex w-full gap-4 p-2",
+        layout === "column"
+          ? "flex-col [&_[data-slot=card]]:w-full"
+          : "no-scrollbar items-stretch overflow-x-auto",
+      )}
+    >
       {status === "loading" || !patient ? (
         <LoadingCards />
       ) : (