Read each member's Telegram handle from the new sheet column F (duty
count moves to G) and mention on-duty people as @handle in the weekly
reminder, so they get a real notification. Names without a handle, or
not found in the people list, fall back to plain text.
- sheet.go: add colHandle, Person.Handle; parse handle column
- scheduler.go: resolve names to @mentions via handlesByName/mention
- service.go: widen default SHEET_RANGE to column G
- add per-request timeout to the Sheets fetch so a hung call can't block /sync
- stop leaking raw sync errors to chat; log detail, reply generically
- migrate logging from log to structured log/slog
- drop duplicate godotenv.Load from ReadSheet (LoadConfig loads .env at startup)
- add multi-stage distroless Dockerfile + .dockerignore; embed tzdata via import
- document single-instance long-polling constraint in README
- translate sheet.go comments to English
- move package doc to doc.go; remove superseded root main.go and live_test.go
Kamil 'Kamaś' Bruchal