All configuration (including secrets) now lives in a single file:
bin/config.yaml. The separate .env file has been eliminated.
Changes:
- config.go: Added SMTPSettings struct + AI.APIKey to Config; removed
godotenv import, Environment struct, and all os.Getenv() calls
- config.yaml: Added smtp section (host/port/username/password) and
ai.api_key field with placeholder values
- main.go: Reads SMTP and API key from cfg instead of env
- smtp.go: Changed Port field from string to int
- otp_test.go: Updated Port values to int
- .env.example: Deleted (all config is in config.yaml)
- .gitignore: Removed .env.example; kept .env for safety
- go.mod/go.sum: Removed github.com/joho/godotenv dependency
- install.sh: No longer creates .env or uses EnvironmentFile;
warns about placeholder values in config.yaml instead
