Initial implementation of temporal progress page

Seven particle-based progress cards (hour, day, week, month, year, summer, fall)
with work-time mode toggle and bridge days support. Light elegant design with
accumulating particle animation. Express server proxies dagsmart.se API.

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "aftersummer",
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2"
+  }
+}