feat(tools): link thoughts and learnings

internal/types/project.go

@@ -39,3 +39,22 @@ type LinkedThought struct {
 	Direction string    `json:"direction"`
 	CreatedAt time.Time `json:"created_at"`
 }
+
+type ThoughtLearningLink struct {
+	ThoughtID  int64     `json:"thought_id"`
+	LearningID int64     `json:"learning_id"`
+	Relation   string    `json:"relation"`
+	CreatedAt  time.Time `json:"created_at"`
+}
+
+type LinkedLearning struct {
+	Learning  Learning  `json:"learning"`
+	Relation  string    `json:"relation"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
+type LinkedLearningThought struct {
+	Thought   Thought   `json:"thought"`
+	Relation  string    `json:"relation"`
+	CreatedAt time.Time `json:"created_at"`
+}