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internal/multiagent/gen_model_input.go

@@ -0,0 +1,23 @@
+package multiagent
+
+import (
+	"context"
+
+	"github.com/cloudwego/eino/adk"
+	"github.com/cloudwego/eino/schema"
+)
+
+// literalInstructionGenModelInput passes Instruction through as a system message without
+// FString template formatting. Eino defaultGenModelInput formats instruction whenever
+// SessionValues exist; prompts with literal curly braces (project blackboard "{关系边: ...}",
+// JSON examples, link syntax) then fail with "could not find key".
+//
+// Matches eino/adk/prebuilt/deep genModelInput — the supported fix per Eino docs.
+func literalInstructionGenModelInput(ctx context.Context, instruction string, input *adk.AgentInput) ([]adk.Message, error) {
+	msgs := make([]adk.Message, 0, len(input.Messages)+1)
+	if instruction != "" {
+		msgs = append(msgs, schema.SystemMessage(instruction))
+	}
+	msgs = append(msgs, input.Messages...)
+	return msgs, nil
+}