feat: first take at calendar

package-lock.json

@@ -44,6 +44,7 @@
         "simple-git": "^3.31.1",
         "snowball-stemmers": "^0.6.0",
         "turndown": "^7.2.2",
+        "vanilla-calendar-pro": "^3.1.0",
         "zod": "^4.3.6",
         "zustand": "^5.0.11"
       },
@@ -14915,6 +14916,16 @@
         "uuid": "dist-node/bin/uuid"
       }
     },
+    "node_modules/vanilla-calendar-pro": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/vanilla-calendar-pro/-/vanilla-calendar-pro-3.1.0.tgz",
+      "integrity": "sha512-yXDtCaedcKz6i5OOdWGwui0C8MAmjXjj7JzKZyjDlkczSRqnhI8BDGFygqT2K+qL1uY7R2fLYlTlxA6oyFs2yg==",
+      "license": "MIT",
+      "funding": {
+        "type": "individual",
+        "url": "https://buymeacoffee.com/uvarov"
+      }
+    },
     "node_modules/verror": {
       "version": "1.10.1",
       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.1.tgz",