fix: add missing Go declarations for assembly functions

Author: OrlovEvgeny

internal/hash/batch_amd64.go

@@ -6,6 +6,15 @@ import (
 	"unsafe"
 )
 
+//go:noescape
+func mix64Asm(x uint64) uint64
+
+//go:noescape
+func mix64x4Asm(x0, x1, x2, x3 uint64) (r0, r1, r2, r3 uint64)
+
+//go:noescape
+func shardIndex(hash, mask uint64) uint64
+
 // HashStringBatch computes hashes for multiple strings.
 // Uses optimized memory access patterns for better cache utilization.
 func HashStringBatch(keys []string, hashes []uint64) {

internal/policy/bloom_amd64.go

@@ -11,6 +11,21 @@ import (
 	"github.com/OrlovEvgeny/go-mcache/internal/alloc"
 )
 
+//go:noescape
+func bloomCheckBit(bits unsafe.Pointer, idx uint64) bool
+
+//go:noescape
+func bloomSetBit(bits unsafe.Pointer, idx uint64) bool
+
+//go:noescape
+func bloomContains8(bits unsafe.Pointer, indices *[8]uint64, numBits uint64) uint8
+
+//go:noescape
+func popcountAVX2(x uint64) int
+
+//go:noescape
+func doubleHash(keyHash uint64, i int) uint64
+
 // bloomFilterSIMD is a SIMD-optimized bloom filter.
 // Uses aligned memory and optimized hash position calculations.
 type bloomFilterSIMD struct {

internal/policy/sketch_amd64.go

@@ -9,6 +9,15 @@ import (
 	"github.com/OrlovEvgeny/go-mcache/internal/alloc"
 )
 
+//go:noescape
+func cmEstimateMinAVX2(row0, row1, row2, row3 unsafe.Pointer, idx0, idx1, idx2, idx3 uint64) uint8
+
+//go:noescape
+func cmIncrementSaturatingAVX2(ptr unsafe.Pointer, idx uint64) uint8
+
+//go:noescape
+func hashMix64(x uint64) uint64
+
 // cmSketchSIMD is a SIMD-optimized Count-Min Sketch.
 // Uses 8-bit counters with memory aligned for AVX2 operations.
 type cmSketchSIMD struct {