chore(release): v2.0.1 — button/icon consistency + mobile header actions

UI consistency pass on top of v2.0.0:
- Colored button text unified to white on all filled controls (both
  themes); darker dark-mode fills so white stays legible.
- Icon badges unified via a shared iconBadgeSx (solid tile + white glyph).
- Detail-page header action buttons stack one-per-row on mobile.
- Dropped the duplicate "Zrušit" in the plan view-cell modal.

No DB migrations. tsc -b --noEmit, npm run build, vitest 152/152 clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "app-ts",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "app-ts",
-      "version": "2.0.0",
+      "version": "2.0.1",
       "license": "ISC",
       "dependencies": {
         "@dnd-kit/core": "^6.3.1",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "app-ts",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "",
   "main": "dist/server.js",
   "scripts": {