feat: add Redis configuration and startup for agents

[zbigniewsobiecki]

Summary

Add Redis support alongside PostgreSQL, enabling agents to use in-memory data storage for caching, queues, and session management.

Changes

• ✅ Install redis-server and redis-tools in Docker image
• ✅ Configure Redis with AOF persistence, 256MB memory limit, and LRU eviction
• ✅ Add startRedis() function following the same pattern as startPostgres()
• ✅ Integrate Redis startup into agent lifecycle (base.ts, review.ts)
• ✅ Document Redis CLI commands and usage in agent prompts
• ✅ Both PostgreSQL and Redis are critical: agents fail if either service doesn't start

Redis Configuration

Parameter	Value	Description
Port	6379	Redis standard port
Bind	127.0.0.1	Localhost only for security
Persistence	AOF (everysec)	Append-only file with fsync every second
Memory Limit	256MB	Maximum memory usage
Eviction Policy	allkeys-lru	LRU eviction when memory full
Protected Mode	Disabled	Easier local development
Access	redis-cli	Via Tmux gadget

Testing

• ✅ All unit tests pass (62 tests across 7 files)
• ✅ TypeScript compilation passes
• ✅ Linting passes (no new warnings)
• ✅ Pre-commit and pre-push hooks pass

Implementation Details

Files Modified

1. Dockerfile - Redis installation and configuration
2. src/agents/utils/setup.ts - startRedis() singleton function
3. src/agents/utils/index.ts - Export startRedis
4. src/agents/base.ts - Import and call startRedis() in setupRepository()
5. src/agents/review.ts - Import and call startRedis() in setupRepository()
6. src/agents/prompts/templates/partials/environment.eta - Redis documentation for agents

Agent Usage

Agents can now use Redis for:

• Caching expensive computations
• Queue management for background tasks
• Session storage
• Rate limiting
• Temporary data storage

Example commands available to agents via Tmux gadget:

redis-cli ping                    # Check if Redis is running
redis-cli SET mykey "value"       # Store data
redis-cli GET mykey               # Retrieve data
redis-cli KEYS "*"                # List all keys
redis-cli INFO                    # Get server stats

Next Steps

After this PR is merged and deployed:

1. Rebuild Docker image to include Redis
2. Redis will start automatically when agents execute
3. Agents can immediately start using Redis via CLI commands