fix: Enhance Kol Variable Rendering and Management

- Updated the regex for placeholder matching to support more flexible key formats.
- Refactored variable storage to allow both ID and key lookups in rendering.
- Improved schema validation to check for duplicate keys and enforce non-empty keys.
- Added new utility functions for variable value lookup and display name generation.
- Enhanced tests to cover new key-based variable scenarios.
- Refactored KolPrompt repository to simplify prompt storage and management, including the removal of obsolete revision handling.
- Introduced new API endpoints for saving, activating, and archiving prompts.
- Added new utility functions for handling Kol placeholders and platform options in the admin web.
- Implemented database migrations to simplify prompt storage structure and ensure data integrity.

server/internal/tenant/app/kol_variable_renderer_test.go

@@ -22,8 +22,8 @@ func TestKolVariableRenderPrompt(t *testing.T) {
 			content: "Hello {{var_a}} from {{var_b}}",
 			schema: KolSchemaJSON{
 				Variables: []KolVariableDefinition{
-					{ID: "var_a", Type: KolVariableTypeInput, Required: true},
-					{ID: "var_b", Type: KolVariableTypeSelect},
+					{ID: "var_a", Key: "brand", Type: KolVariableTypeInput, Required: true},
+					{ID: "var_b", Key: "industry", Type: KolVariableTypeSelect},
 				},
 			},
 			values: map[string]any{
@@ -32,12 +32,38 @@ func TestKolVariableRenderPrompt(t *testing.T) {
 			},
 			want: "Hello 宜家 from 家具",
 		},
+		{
+			name:    "supports key placeholders and key values",
+			content: "围绕 {{目标词}} 写一篇文章，并突出 {{目标词}} 的优势",
+			schema: KolSchemaJSON{
+				Variables: []KolVariableDefinition{
+					{ID: "var_a", Key: "目标词", Label: "目标词", Type: KolVariableTypeInput, Required: true},
+				},
+			},
+			values: map[string]any{
+				"目标词": "北京装修公司",
+			},
+			want: "围绕 北京装修公司 写一篇文章，并突出 北京装修公司 的优势",
+		},
+		{
+			name:    "supports key placeholders with id values",
+			content: "Hello {{brand}}",
+			schema: KolSchemaJSON{
+				Variables: []KolVariableDefinition{
+					{ID: "var_a", Key: "brand", Label: "Brand", Type: KolVariableTypeInput, Required: true},
+				},
+			},
+			values: map[string]any{
+				"var_a": "宜家",
+			},
+			want: "Hello 宜家",
+		},
 		{
 			name:    "missing required",
 			content: "Hello {{var_required}}",
 			schema: KolSchemaJSON{
 				Variables: []KolVariableDefinition{
-					{ID: "var_required", Type: KolVariableTypeInput, Required: true},
+					{ID: "var_required", Key: "required", Label: "Required", Type: KolVariableTypeInput, Required: true},
 				},
 			},
 			values:  map[string]any{},
@@ -75,8 +101,8 @@ func TestKolVariableValidateSchemaRejectsDuplicateID(t *testing.T) {
 
 	err := ValidateSchema(KolSchemaJSON{
 		Variables: []KolVariableDefinition{
-			{ID: "var_a", Type: KolVariableTypeInput},
-			{ID: "var_a", Type: KolVariableTypeSelect},
+			{ID: "var_a", Key: "first", Type: KolVariableTypeInput},
+			{ID: "var_a", Key: "second", Type: KolVariableTypeSelect},
 		},
 	})
 
@@ -89,10 +115,24 @@ func TestKolVariableValidateSchemaRejectsInvalidID(t *testing.T) {
 
 	err := ValidateSchema(KolSchemaJSON{
 		Variables: []KolVariableDefinition{
-			{ID: "bad_id", Type: KolVariableTypeInput},
+			{ID: "bad_id", Key: "bad", Type: KolVariableTypeInput},
 		},
 	})
 
 	require.Error(t, err)
 	require.Contains(t, err.Error(), "start with var_")
 }
+
+func TestKolVariableValidateSchemaRejectsDuplicateKey(t *testing.T) {
+	t.Parallel()
+
+	err := ValidateSchema(KolSchemaJSON{
+		Variables: []KolVariableDefinition{
+			{ID: "var_a", Key: "topic", Type: KolVariableTypeInput},
+			{ID: "var_b", Key: "topic", Type: KolVariableTypeSelect},
+		},
+	})
+
+	require.Error(t, err)
+	require.Contains(t, err.Error(), "duplicate variable key")
+}