feat(go-agent): Ported retrieval node, added Keenable web search tool (#16396)

Ported retrieval node, added Keenable web search tool
- [x] New Feature (non-breaking change which adds functionality)

internal/deepdoc/client.go

@@ -210,8 +210,8 @@ func (c *Client) doPost(ctx context.Context, url string, buildBody bodyBuilder,
 // httpError carries the HTTP status + body so callers can inspect.
 // retryable=true means the doPost loop already exhausted retries.
 type httpError struct {
-	Status   string
-	Body     string
+	Status    string
+	Body      string
 	retryable bool
 }
 

internal/deepdoc/dla.go

@@ -50,16 +50,16 @@ type DLAResult struct {
 // at indices 4/6/7/9 are kept verbatim for backward compatibility
 // with existing inference servers.
 var DLAClasses = []string{
-	"title",            // 0
-	"text",             // 1
-	"reference",        // 2
-	"figure",           // 3
-	"figure caption",   // 4
-	"table",            // 5
-	"table caption",    // 6
-	"table caption",    // 7  duplicate
-	"equation",         // 8
-	"figure caption",   // 9  duplicate
+	"title",          // 0
+	"text",           // 1
+	"reference",      // 2
+	"figure",         // 3
+	"figure caption", // 4
+	"table",          // 5
+	"table caption",  // 6
+	"table caption",  // 7  duplicate
+	"equation",       // 8
+	"figure caption", // 9  duplicate
 }
 
 // rawDLA is the wire format the DLA server returns

internal/deepdoc/dla_test.go

@@ -106,7 +106,7 @@ func TestDLA_SuccessfulResponse(t *testing.T) {
 			w.Header().Set("Content-Type", "application/json")
 			_ = json.NewEncoder(w).Encode(map[string]any{
 				"bboxes": [][]float64{
-					{10, 20, 100, 200, 0.95, 0}, // title
+					{10, 20, 100, 200, 0.95, 0},  // title
 					{10, 220, 500, 400, 0.88, 1}, // text
 					{50, 420, 600, 700, 0.77, 3}, // figure
 				},