fix(types): add missing types and fix compilation errors - WIP

Fixed compilation errors in integration code:

Type System Fixes:
- Add types.Logger type alias (*slog.Logger)
- Add PoolInfo.LiquidityUSD field
- Add ProtocolSushiSwap and ProtocolCamelot constants
- Fix time.Now() call in arbiscan_validator.go

Pool Discovery Fixes:
- Change cache from *cache.PoolCache to cache.PoolCache (interface)
- Add context.Context parameters to cache.Add() and cache.Count() calls
- Fix protocol type from string to ProtocolType

Docker Fixes:
- Add .dockerignore to exclude test files and docs
- Add go mod tidy step in Dockerfile
- Add //go:build examples tag to example_usage.go

Still Remaining:
- Arbitrage package needs similar interface fixes
- SwapEvent.TokenIn/TokenOut field name issues
- More cache interface method calls need context

Progress: Parser and pool discovery packages now compile correctly.
Integration code (main.go, sequencer, pools) partially working.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.dockerignore

@@ -0,0 +1,54 @@
+# Exclude V1 codebase (not needed in V2 container)
+orig/
+
+# Exclude build artifacts
+bin/
+build/
+dist/
+*.exe
+
+# Exclude logs
+logs/
+*.log
+
+# Exclude temporary files
+tmp/
+temp/
+*.tmp
+
+# Exclude test coverage
+*.out
+coverage.html
+
+# Exclude IDE files
+.vscode/
+.idea/
+*.swp
+
+# Exclude git
+.git/
+.gitignore
+
+# Exclude documentation (not needed at runtime)
+docs/
+*.md
+
+# Exclude environment files (passed at runtime)
+.env
+.env.*
+
+# Exclude Docker/k8s files
+docker-compose.yml
+Dockerfile
+.dockerignore
+
+# Exclude test files
+*_test.go
+example_usage.go
+examples_test.go
+
+# Exclude scripts (not needed in container)
+scripts/
+
+# Exclude config (provisioned externally)
+config/