feat(ai): add local expert library

backend/internal/models/migrations.go

@@ -1,6 +1,7 @@
 package models
 
 import (
+	_ "embed"
 	"encoding/json"
 	"fmt"
 	"strings"
@@ -31,6 +32,7 @@ func runVersionedMigrations(database *gorm.DB) error {
 	migrations := []versionedMigration{
 		{version: 1, name: "normalize_project_identifiers", run: normalizeLegacyProjectIdentifiers},
 		{version: 2, name: "deduplicate_project_tags", run: deduplicateLegacyProjectTags},
+		{version: 3, name: "seed_ai_experts", run: seedAIExperts},
 	}
 	for _, migration := range migrations {
 		// Connection callbacks can provide an initialized Gorm session. Start each
@@ -63,6 +65,48 @@ func runVersionedMigrations(database *gorm.DB) error {
 	return nil
 }
 
+//go:embed experts_catalog.json
+var expertCatalogJSON []byte
+
+type embeddedExpertCatalog struct {
+	Source  string                      `json:"source"`
+	License string                      `json:"license"`
+	Experts []embeddedExpertCatalogItem `json:"experts"`
+}
+
+type embeddedExpertCatalogItem struct {
+	Slug         string `json:"slug"`
+	Category     string `json:"category"`
+	CategoryName string `json:"categoryName"`
+	Name         string `json:"name"`
+	Description  string `json:"description"`
+	Emoji        string `json:"emoji"`
+	Color        string `json:"color"`
+	SystemPrompt string `json:"systemPrompt"`
+}
+
+func seedAIExperts(tx *gorm.DB) (map[string]int, error) {
+	var catalog embeddedExpertCatalog
+	if err := json.Unmarshal(expertCatalogJSON, &catalog); err != nil {
+		return nil, fmt.Errorf("decode embedded AI expert catalog: %w", err)
+	}
+	records := make([]SenlinAgentAIExpert, 0, len(catalog.Experts))
+	for _, expert := range catalog.Experts {
+		records = append(records, SenlinAgentAIExpert{
+			Slug: expert.Slug, Category: expert.Category, CategoryName: expert.CategoryName,
+			Name: expert.Name, Description: expert.Description, Emoji: expert.Emoji,
+			Color: expert.Color, SystemPrompt: expert.SystemPrompt, Source: catalog.Source,
+			SourceLicense: catalog.License, Enabled: true,
+		})
+	}
+	if len(records) > 0 {
+		if err := tx.CreateInBatches(&records, 25).Error; err != nil {
+			return nil, err
+		}
+	}
+	return map[string]int{"inserted": len(records)}, nil
+}
+
 func normalizeLegacyProjectIdentifiers(tx *gorm.DB) (map[string]int, error) {
 	var projects []SenlinAgentProject
 	if err := tx.Model(&SenlinAgentProject{}).Select("id", "owner_id", "identifier").Order("owner_id asc, id asc").Find(&projects).Error; err != nil {