feat(ai): 添加 SeaORM Entity (ai_prompt/ai_analysis/ai_usage)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

crates/erp-ai/src/entity/ai_analysis.rs

@@ -0,0 +1,33 @@
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "ai_analysis_results")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    pub patient_id: Uuid,
+    pub analysis_type: String,
+    pub source_ref: String,
+    pub prompt_id: Uuid,
+    pub prompt_version: i32,
+    pub model_used: String,
+    pub input_data_hash: String,
+    pub sanitized_input: Option<serde_json::Value>,
+    pub result_content: Option<String>,
+    pub result_metadata: Option<serde_json::Value>,
+    pub status: String,
+    pub error_message: Option<String>,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Option<Uuid>,
+    pub updated_by: Option<Uuid>,
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version_lock: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}