fix(version): read CI_COMMIT_TAG as source of truth, package.json as fallback

Previously: vite read package.json.version only, requiring manual bump
before each tag pipeline (manual sync ломалось — MR !44 пример костыля).

Now: vite reads CI_COMMIT_TAG (passed via Dockerfile ARG GIT_TAG from
.gitlab-ci.yml .docker_base) → strips 'v' prefix → exposes как __APP_TAG__.
'none' sentinel filtered → empty string → fallback к package.json.

VersionBadge priority chain:
  1. serverTag (что прод RUNS, через /api/v1/version)
  2. clientTag (что build'илось на tag pipeline)
  3. v${clientVersion} (package.json fallback floor для local / branch)

Dockerfile: add ARG GIT_TAG=none, ENV CI_COMMIT_TAG=$GIT_TAG (mirrors
существующий pattern с GIT_COMMIT → CI_COMMIT_SHORT_SHA).

Revert package.json 1.3.1 → 1.2.0 (manual bump из MR !44). Версия теперь
follows tag, не наоборот.

ordinis-admin-ui/package.json

@@ -1,7 +1,7 @@
 {
   "name": "ordinis-admin-ui",
   "private": true,
-  "version": "1.3.1",
+  "version": "1.2.0",
   "type": "module",
   "scripts": {
     "dev": "vite",