feat(spectypes): add support for PostGIS and pgvector types

* Implement custom types: SqlGeometry, SqlGeography, SqlHalfVector, SqlSparseVector, SqlBitVector
* Add spatial filter operators and vector similarity operators
* Include metadata and OpenAPI reporting for geometry/vector column types
* Create tests for EWKB and WKT conversions

pkg/reflection/model_utils_geo_test.go

@@ -0,0 +1,56 @@
+package reflection
+
+import (
+	"testing"
+
+	"github.com/bitechdev/ResolveSpec/pkg/spectypes"
+)
+
+type geoModel struct {
+	ID        int64                   `json:"id"`
+	Location  spectypes.SqlGeometry   `json:"location"`
+	Area      spectypes.SqlGeography  `json:"area"`
+	Embedding spectypes.SqlVector     `json:"embedding"`
+	HalfEmb   spectypes.SqlHalfVector `json:"half_emb"`
+	Name      spectypes.SqlString     `json:"name"`
+}
+
+func TestGetColumnSQLTypeName(t *testing.T) {
+	m := geoModel{}
+	cases := map[string]string{
+		"location":  "geometry",
+		"area":      "geography",
+		"embedding": "vector",
+		"half_emb":  "halfvec",
+		"name":      "text",
+	}
+	for col, want := range cases {
+		got, ok := GetColumnSQLTypeName(m, col)
+		if !ok || got != want {
+			t.Errorf("GetColumnSQLTypeName(%q) = %q, %v; want %q", col, got, ok, want)
+		}
+	}
+	if _, ok := GetColumnSQLTypeName(m, "id"); ok {
+		t.Error("id is not a spectypes column")
+	}
+}
+
+func TestIsSpatialColumn(t *testing.T) {
+	m := geoModel{}
+	if !IsSpatialColumn(m, "location") || !IsSpatialColumn(m, "area") {
+		t.Error("location/area should be spatial")
+	}
+	if IsSpatialColumn(m, "embedding") || IsSpatialColumn(m, "name") {
+		t.Error("embedding/name should not be spatial")
+	}
+}
+
+func TestIsVectorColumn(t *testing.T) {
+	m := geoModel{}
+	if !IsVectorColumn(m, "embedding") || !IsVectorColumn(m, "half_emb") {
+		t.Error("embedding/half_emb should be vector")
+	}
+	if IsVectorColumn(m, "location") || IsVectorColumn(m, "name") {
+		t.Error("location/name should not be vector")
+	}
+}