Replace config.py with .env for Docker-standard configuration

Config was a Python file baked into the image or bind-mounted, requiring
a rebuild or manual file management for any settings change. Now uses
env_file in docker-compose with os.environ.get() calls, so config
changes only need a container restart. Also filters Gitea traffic from
LLM analysis to prevent false positive reconnaissance alerts on normal
repository browsing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.env.example

@@ -0,0 +1,39 @@
+# Web Log Monitor Configuration
+# Copy this file to .env and fill in your values.
+
+# LLM Configuration
+LLAMA_URL=http://athena.lan:11434/v1/chat/completions
+MODEL=Qwen3-8B-Q6_K
+
+# Gotify Configuration
+GOTIFY_URL=https://notify.thecozycat.net/message
+GOTIFY_TOKEN=YOUR_TOKEN_HERE
+
+# Log Source Configuration
+# LOG_MODE: "local" for direct file access (Docker), "ssh" for remote access
+LOG_PATH=/logs/access.log
+LOG_MODE=local
+
+# SSH settings (only used if LOG_MODE=ssh)
+BARGE_HOST=barge.lan
+
+# Abuse log for fail2ban
+ABUSE_LOG=/data/abuse.log
+
+# State file directory
+STATE_DIR=/data
+
+# Processing Settings
+BATCH_SIZE=100
+MAX_LINES_PER_RUN=1000
+
+# Daemon Settings
+LLM_INTERVAL=25
+TAIL_POLL_INTERVAL=1
+
+# Threat Database (SQL Server)
+# Set all four values to enable historical threat tracking.
+#DB_SERVER=barge.lan,1433
+#DB_NAME=ThreatDB
+#DB_USER=weblogmonitor
+#DB_PASSWORD=your_password