Fix docker-compose.yml: add restart policies, env vars, and missing configs

[joshdev8]

Summary

• Remove deprecated version: '3.8' field (unnecessary in Docker Compose v2+)
• Reorganize section headers for clarity: Media Server, Monitoring, Media Management, Media Center, Downloading, Error Monitoring, Stream Tracking
• Add restart: unless-stopped to all services (previously only Seerr, Tracearr, TimescaleDB, Redis had it)
• Add PUID, PGID, TZ, PLEX_CLAIM environment variables to Plex service
• Fix Watchtower by mounting /var/run/docker.sock (required for it to detect and update containers)
• Add TZ environment variable to all services for consistent timezone handling
• Add missing port mappings: Tautulli (8181), Requestrr (4545), Transmission (9091)

Test plan

• Run docker compose config to validate the compose file
• Run docker compose up -d and verify all services start
• Verify Watchtower can detect and update containers
• Verify Tautulli, Requestrr, and Transmission are accessible on their new ports

🤖 Generated with Claude Code

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: a4a0255b-8b73-4e67-9475-febb8f181a0f

📥 Commits

Reviewing files that changed from the base of the PR and between 1b7689b and 127db00.

📒 Files selected for processing (1)

• docker-compose.yml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/docker-compose-improvements

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