feat(birdnet-go): add LOG_MAX_SIZE_MB and LOG_MAX_AGE_DAYS options to manage log storage

Add addon options to control birdnet-go log file rotation:
- LOG_MAX_SIZE_MB (default: 50): maximum size per log file before rotation
- LOG_MAX_AGE_DAYS (default: 7): maximum days to retain old log files

On startup, the addon:
1. Configures birdnet-go's logging.file_output settings in config.yaml
2. Sets max_rotated_files to 3 and enables compression
3. Trims existing log files exceeding the configured age

Fixes #1922

birdnet-go/CHANGELOG.md

@@ -1,4 +1,6 @@
 ## nightly-20260525 (26-05-2026)
+- Add LOG_MAX_SIZE_MB and LOG_MAX_AGE_DAYS addon options to manage log storage size
+- Automatically trim log files exceeding configured age on startup
 - Minor bugs fixed
 ## nightly-20260511-414-2 (22-05-2026)
 - Minor bugs fixed

birdnet-go/config.yaml

@@ -86,6 +86,8 @@ name: Birdnet-go
 options:
   env_vars: []
   BIRDSONGS_FOLDER: /config/clips
+  LOG_MAX_SIZE_MB: 50
+  LOG_MAX_AGE_DAYS: 7
   homeassistant_microphone: false
 panel_admin: false
 panel_icon: mdi:bird
@@ -104,6 +106,8 @@ schema:
     - name: match(^[A-Za-z0-9_]+$)
       value: str?
   BIRDSONGS_FOLDER: str?
+  LOG_MAX_SIZE_MB: int(1,1000)?
+  LOG_MAX_AGE_DAYS: int(1,365)?
   TZ: str?
   cifsdomain: str?
   cifspassword: str?

birdnet-go/rootfs/etc/cont-init.d/01-structure.sh

@@ -100,3 +100,26 @@ bashio::log.info "Correcting configuration for defaults"
 # Update database location in config files
 yq -i -y ".output.sqlite.path = \"/config/birdnet.db\"" "$CONFIG_LOCATION"
 bashio::log.info "... database is located in /config/birdnet.db"
+
+####################
+# Log Management
+####################
+LOG_MAX_SIZE_MB="$(bashio::config "LOG_MAX_SIZE_MB")"
+LOG_MAX_SIZE_MB="${LOG_MAX_SIZE_MB:-50}"
+LOG_MAX_AGE_DAYS="$(bashio::config "LOG_MAX_AGE_DAYS")"
+LOG_MAX_AGE_DAYS="${LOG_MAX_AGE_DAYS:-7}"
+
+bashio::log.info "Configuring log rotation: max ${LOG_MAX_SIZE_MB}MB per file, max ${LOG_MAX_AGE_DAYS} days retention"
+
+# Configure log rotation in birdnet-go config
+yq -i -y ".logging.file_output.max_size = ${LOG_MAX_SIZE_MB}" "$CONFIG_LOCATION"
+yq -i -y ".logging.file_output.max_age = ${LOG_MAX_AGE_DAYS}" "$CONFIG_LOCATION"
+yq -i -y ".logging.file_output.max_rotated_files = 3" "$CONFIG_LOCATION"
+yq -i -y ".logging.file_output.compress = true" "$CONFIG_LOCATION"
+
+# Trim existing log files that exceed the configured max age
+LOG_DIR="/config/logs"
+if [ -d "$LOG_DIR" ]; then
+    bashio::log.info "Trimming log files older than ${LOG_MAX_AGE_DAYS} days in ${LOG_DIR}"
+    find "$LOG_DIR" -type f -name "*.log*" -mtime +"$LOG_MAX_AGE_DAYS" -delete 2>/dev/null || true
+fi