Migrate omsorgapp to browser SPA, add Docker/CI build setup

- omsorgapp: drop Electron, run as a plain Vite/React browser app; refresh
  token moves to an HttpOnly cookie (omsorgCore), CORS added for the new
  browser origin, document download/preview switched to Blob-based browser
  APIs.
- Add Dockerfiles for omsorgCore, omsorgapp, and omsorgWeb, a docker-compose.yml
  wiring Postgres/MySQL/all three apps together, and a Gitea Actions workflow
  that builds and pushes images to the repo's container registry on push to
  main and on version tags.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

omsorgapp/src/modules/home/HomePage.jsx

@@ -3,6 +3,8 @@ import OmsorgCard from "../../components/OmsorgCard";
 import OmsorgButton from "../../components/ui/OmsorgButton";
 import HomeStats from "./HomeStats";
 import OmsorgBadge from "../../components/ui/OmsorgBadge";
+import FollowUpWidget from "./FollowUpWidget";
+import OrderStatusWidget from "./OrderStatusWidget";
 export default function HomePage() {
   return (
     <>
@@ -27,14 +29,8 @@ export default function HomePage() {
 </div>
       <HomeStats />
       <section className="dashboard-grid home-grid">
-        <OmsorgCard title="Heute zu erledigen">
-          <ul className="home-task-list">
-            <li>☎ Vertrag verlängern</li>
-            <li>📄 3 Rechnungen offen</li>
-            <li>👤 Neuer Mitarbeiter beginnt</li>
-            <li>⚠ Führerschein läuft bald ab</li>
-          </ul>
-        </OmsorgCard>
+        <FollowUpWidget />
+        <OrderStatusWidget />
 
         <OmsorgCard title="Schnellaktionen">
           <div className="home-actions">
@@ -67,22 +63,4 @@ export default function HomePage() {
       </section>
         </>
   );
-}<OmsorgCard>
-  <h2>
-    Willkommen bei
-    <span className="accent"> Omsorg Business Controls Pro</span>
-  </h2>
-
-  <p>
-    Schön, dass ihr heute wieder da seid.
-    Hier beginnt euer Arbeitstag.
-  </p>
-
-  <div className="badge-test-row">
-    <OmsorgBadge status="aktiv" />
-    <OmsorgBadge status="einsatz" />
-    <OmsorgBadge status="urlaub" />
-    <OmsorgBadge status="krank" />
-    <OmsorgBadge status="vertrag" />
-  </div>
-</OmsorgCard>
+}