fix(deploy): take the Gitea address for Android updates from git remote

The server kept the git.example.lan placeholder from .env.example, so the
/android page and in-app updates had no release. install.sh and update.sh now
fill GITEA_URL and GITEA_REPO from the clone's origin (https, ssh and scp
forms, credentials stripped) when they are empty or still the placeholder,
and the API treats the placeholder as not configured.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

deploy/install.sh

@@ -76,6 +76,39 @@ for key in JWT_PRIVATE_KEY STREAM_SIGNING_KEY; do
   fi
 done
 
+# Самообновление Android: адрес Gitea и репозиторий — из origin этого клона, если в .env пусто
+# или осталась заглушка из .env.example (https://host/owner/repo, git@host:owner/repo, ssh://git@host:port/owner/repo).
+fill_gitea() {
+  local url repo origin host path
+  url="$(sed -n 's/^GITEA_URL=//p' .env)"
+  repo="$(sed -n 's/^GITEA_REPO=//p' .env)"
+  case "$url" in "" | *example.*) url="" ;; esac
+  case "$repo" in "" | owner/*) repo="" ;; esac
+  [ -n "$url" ] && [ -n "$repo" ] && return 0
+  origin="$(git -c safe.directory='*' remote get-url origin 2>/dev/null || true)"
+  [ -n "$origin" ] || return 0
+  case "$origin" in
+    http://* | https://*)
+      host="$(printf '%s' "$origin" | sed -E 's#^(https?://)([^@/]*@)?([^/]+)/.*#\1\3#')"
+      path="$(printf '%s' "$origin" | sed -E 's#^https?://[^/]+/##')" ;;
+    ssh://*)
+      host="https://$(printf '%s' "$origin" | sed -E 's#^ssh://([^@/]*@)?([^:/]+).*#\2#')"
+      path="$(printf '%s' "$origin" | sed -E 's#^ssh://[^/]+/##')" ;;
+    *:*)
+      host="https://$(printf '%s' "$origin" | sed -E 's#^([^@]*@)?([^:]+):.*#\2#')"
+      path="${origin#*:}" ;;
+    *) return 0 ;;
+  esac
+  path="${path%.git}"
+  [ -n "$url" ] || url="$host"
+  [ -n "$repo" ] || repo="$path"
+  for kv in "GITEA_URL=$url" "GITEA_REPO=$repo"; do
+    if grep -q "^${kv%%=*}=" .env; then sed -i "s|^${kv%%=*}=.*|$kv|" .env; else echo "$kv" >> .env; fi
+  done
+  echo "→ самообновление Android: $url, $repo (из git remote; поменять — в .env)"
+}
+fill_gitea
+
 # LIBRARY_HOST, переданный при повторном запуске, попадает и в уже существующий .env
 if [ -n "$LIBRARY_HOST" ]; then
   if grep -q '^LIBRARY_HOST=' .env; then