v1.0.0 — Telegram account linking, email confirmation, free-tier grace period

First tagged release of the DataGateMonitor monorepo. From this point on, the root repo carries its own version (independent of each component's internal version).

Highlights

• Telegram account linking: optional Telegram ID linking, bot- and app-initiated link-code flows, localized error messages, and graceful handling of resubmitted/already-used codes.
• Free-tier access compliance: configurable grace period for non-compliant Free/Default users, OpenVPN session enforcement job, admin overview + manual-kill endpoints.
• Android connect endpoint: POST /api/auth/free-tier-access/connect lets the client start/refresh the grace window and show a live "connected for N minutes" countdown.
• Grace-period disconnect notifications: users are told why they were disconnected via Telegram DM (new direct Bot API sender) or email fallback, with a full audit trail (FreeTierDisconnectLog, SentEmailLogs).
• Email confirmation flow and admin password history on the frontend.

Component versions in this release

Component	Version	Commit
backend	1.0.3.63 (app) / SharedModels 1.0.44	0d40a91
frontend	1.4.8	ed56741
telegrambot	1.2.3.14	1c0885d
openvpn	1.2.5.78 / SharedModels 1.0.35	346c5ec
xray	unchanged in this release	a78e423

Merged pull requests

• backend: #169 → develop, #170 → main
• frontend: #112 → develop, #113 → main
• telegrambot: #108 → develop, #109 → main
• openvpn: #30 → develop, #31 → main
• root: #34 → develop, #35 → main

Docker Hub images

• imkolganov/datagate-monitor-backend
• imkolganov/datagate-monitor-frontend
• imkolganov/datagate-monitor-telegrambot
• imkolganov/datagate-monitor-openvpn
• imkolganov/datagate-monitor-xray

Note: these images currently publish latest/amd64/arm64 tags only — there is no v1.0.0-tagged image yet. Run ./build.sh from the repo root (or push to a dockerhub/release/v* branch per submodule) to publish images for this release.