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>

pkg/pools/discovery.go

@@ -84,7 +84,7 @@ func DefaultDiscoveryConfig() *DiscoveryConfig {
 type Discovery struct {
 	config *DiscoveryConfig
 	client *ethclient.Client
-	cache  *cache.PoolCache
+	cache  cache.PoolCache
 	logger *slog.Logger
 
 	mu            sync.Mutex
@@ -92,7 +92,7 @@ type Discovery struct {
 }
 
 // NewDiscovery creates a new pool discovery service
-func NewDiscovery(config *DiscoveryConfig, cache *cache.PoolCache, logger *slog.Logger) (*Discovery, error) {
+func NewDiscovery(config *DiscoveryConfig, poolCache cache.PoolCache, logger *slog.Logger) (*Discovery, error) {
 	if config == nil {
 		config = DefaultDiscoveryConfig()
 	}
@@ -105,7 +105,7 @@ func NewDiscovery(config *DiscoveryConfig, cache *cache.PoolCache, logger *slog.
 	return &Discovery{
 		config: config,
 		client: client,
-		cache:  cache,
+		cache:  poolCache,
 		logger: logger.With("component", "pool_discovery"),
 	}, nil
 }
@@ -124,7 +124,8 @@ func (d *Discovery) DiscoverAll(ctx context.Context) error {
 		d.logger.Error("uniswap v3 discovery failed", "error", err)
 	}
 
-	d.logger.Info("pool discovery complete", "pools_discovered", d.poolsDiscovered, "total_cached", d.cache.Count())
+	count, _ := d.cache.Count(ctx)
+	d.logger.Info("pool discovery complete", "pools_discovered", d.poolsDiscovered, "total_cached", count)
 	return nil
 }
 
@@ -134,7 +135,7 @@ func (d *Discovery) discoverUniswapV2Pools(ctx context.Context) error {
 
 	factories := []struct {
 		address  common.Address
-		protocol string
+		protocol mevtypes.ProtocolType
 	}{
 		{UniswapV2FactoryAddress, mevtypes.ProtocolUniswapV2},
 		{CamelotFactoryAddress, mevtypes.ProtocolCamelot},
@@ -173,7 +174,7 @@ func (d *Discovery) discoverUniswapV2Pools(ctx context.Context) error {
 			}
 
 			// Add to cache
-			if err := d.cache.Add(poolInfo); err != nil {
+			if err := d.cache.Add(ctx, poolInfo); err != nil {
 				d.logger.Warn("failed to add pool to cache", "pool", poolAddr.Hex(), "error", err)
 				continue
 			}
@@ -218,7 +219,7 @@ func (d *Discovery) getUniswapV2Pool(ctx context.Context, factory common.Address
 }
 
 // fetchUniswapV2PoolInfo fetches pool information
-func (d *Discovery) fetchUniswapV2PoolInfo(ctx context.Context, poolAddr, token0, token1 common.Address, protocol string) (*mevtypes.PoolInfo, error) {
+func (d *Discovery) fetchUniswapV2PoolInfo(ctx context.Context, poolAddr, token0, token1 common.Address, protocol mevtypes.ProtocolType) (*mevtypes.PoolInfo, error) {
 	// getReserves() returns (uint112,uint112,uint32)
 	// Simplified - in production use generated bindings
 	calldata := []byte{0x09, 0x02, 0xf1, 0xac} // getReserves selector
@@ -290,7 +291,7 @@ func (d *Discovery) discoverUniswapV3Pools(ctx context.Context) error {
 			}
 
 			// Add to cache
-			if err := d.cache.Add(poolInfo); err != nil {
+			if err := d.cache.Add(ctx, poolInfo); err != nil {
 				d.logger.Warn("failed to add pool to cache", "pool", poolAddr.Hex(), "error", err)
 				continue
 			}
@@ -391,8 +392,9 @@ func (d *Discovery) GetStats() map[string]interface{} {
 	d.mu.Lock()
 	defer d.mu.Unlock()
 
+	count, _ := d.cache.Count(context.Background())
 	return map[string]interface{}{
 		"pools_discovered": d.poolsDiscovered,
-		"pools_cached":     d.cache.Count(),
+		"pools_cached":     count,
 	}
 }