feat(config): add environment-only mode

[s0up4200]

Description

• Add DISABLE_CONFIG_FILE env var to run without the need for config.yaml
• Add missing environment variables support for all config options
• Redact sensitive information in logs
• Improve config loading logic and validation

# Core settings
SEASONPACKARR__DISABLE_CONFIG_FILE=false
SEASONPACKARR__HOST=0.0.0.0
SEASONPACKARR__PORT=42069
SEASONPACKARR__API_TOKEN=

# Logging settings
SEASONPACKARR__LOG_LEVEL=DEBUG
SEASONPACKARR__LOG_PATH=/config/logs/seasonpackarr.log
SEASONPACKARR__LOG_MAX_SIZE=50
SEASONPACKARR__LOG_MAX_BACKUPS=3

# Feature settings
SEASONPACKARR__SMART_MODE=false
SEASONPACKARR__SMART_MODE_THRESHOLD=0.75
SEASONPACKARR__PARSE_TORRENT_FILE=false

# Fuzzy matching settings
SEASONPACKARR__FUZZY_MATCHING_SKIP_REPACK_COMPARE=false
SEASONPACKARR__FUZZY_MATCHING_SIMPLIFY_HDR_COMPARE=false

# Notification settings
SEASONPACKARR__NOTIFICATIONS_DISCORD=
SEASONPACKARR__NOTIFICATIONS_NOTIFICATION_LEVEL=MATCH,ERROR

# Client settings (can have multiple clients by changing DEFAULT to another name)
SEASONPACKARR__CLIENTS_DEFAULT_HOST=127.0.0.1
SEASONPACKARR__CLIENTS_DEFAULT_PORT=8080
SEASONPACKARR__CLIENTS_DEFAULT_USERNAME=admin
SEASONPACKARR__CLIENTS_DEFAULT_PASSWORD=adminadmin
SEASONPACKARR__CLIENTS_DEFAULT_PREIMPORTPATH=/data/torrents/tv

[nuxencs]

this looks good to me, thanks for the contribution 😄
sure you can add env var support for notifications as well if you want to!
clients might be a bit more complex, but if you already have an idea on how to implement it, go for it 👍🏼

[s0up4200]

this looks good to me, thanks for the contribution 😄 sure you can add env var support for notifications as well if you want to! clients might be a bit more complex, but if you already have an idea on how to implement it, go for it 👍🏼

Updated the OP. Works fine from my testing. Don't take my word for it though!

[s0up4200]

I notice a few changes that I should revert. I can deal with those in the morning.