refactor(agent): Pi 会话运行时 - 接入原生 Agent 与 Skills 工具链

backend/internal/database/migrations.go

@@ -11,7 +11,7 @@ import (
 	"gorm.io/gorm"
 )
 
-const CurrentSchemaVersion int64 = 41
+const CurrentSchemaVersion int64 = 42
 
 const baselineSchemaChecksum = "sha256:open-ai-canvas-schema-v1-20260830"
 const schemaMigrationAppliedAtIndexChecksum = "sha256:schema-migrations-applied-at-index-v2-20260830"
@@ -139,6 +139,9 @@ var schemaMigrations = []migration{
 	{version: 41, name: "resource_thumbnail", checksum: resourceThumbnailChecksum, apply: func(tx *gorm.DB) error {
 		return tx.AutoMigrate(&model.Resource{})
 	}},
+	{version: 42, name: "cloud_agent_pi_sessions", checksum: "sha256:cloud-agent-pi-sessions-v42-20260928", apply: func(tx *gorm.DB) error {
+		return tx.AutoMigrate(&model.CloudAgentPiSession{})
+	}},
 }
 
 func migratePrefixedIDSequenceReconcile(tx *gorm.DB) error {

backend/internal/database/schema.go

@@ -17,6 +17,7 @@ import (
 func Models() []any {
 	return []any{
 		&model.CloudAgentExecution{},
+		&model.CloudAgentPiSession{},
 		&model.CloudAgentEventRecord{},
 		&model.CloudAgentMessageRecord{},
 		&model.CloudAgentCanvasMutation{},