feat(ECR-021): AICoreConfig SystemPrompt 只读并 Closed

新增 system_prompts 目录、admin.ai_config.read 与 admin-h5「AI」页；本切片不改运行时 Prompt、禁写发布/UGC/真支付。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/internal/handler/admin_ai_config.go

@@ -0,0 +1,46 @@
+package handler
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+
+	"github.com/yuxingu/digital-psychology/apps/api/internal/middleware"
+	"github.com/yuxingu/digital-psychology/apps/api/internal/service/admin"
+	"github.com/yuxingu/digital-psychology/apps/api/pkg/response"
+)
+
+func (h *AdminHandler) registerAIConfig(authed *gin.RouterGroup) {
+	g := authed.Group("/ai")
+	g.GET("/system-prompts", middleware.RequireAdminPermission(h.Svc, admin.PermAIConfigRead), h.ListSystemPrompts)
+	g.GET("/system-prompts/:id", middleware.RequireAdminPermission(h.Svc, admin.PermAIConfigRead), h.GetSystemPrompt)
+}
+
+func (h *AdminHandler) ListSystemPrompts(c *gin.Context) {
+	items, err := h.Svc.ListSystemPrompts(c.Request.Context())
+	if err != nil {
+		response.Fail(c, http.StatusInternalServerError, 50027, "list system prompts failed")
+		return
+	}
+	response.OK(c, gin.H{"items": items})
+}
+
+func (h *AdminHandler) GetSystemPrompt(c *gin.Context) {
+	id, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		response.Fail(c, http.StatusBadRequest, 40002, "invalid id")
+		return
+	}
+	row, err := h.Svc.GetSystemPrompt(c.Request.Context(), id)
+	if errors.Is(err, admin.ErrSystemPromptNotFound) {
+		response.Fail(c, http.StatusNotFound, 40404, "system prompt not found")
+		return
+	}
+	if err != nil {
+		response.Fail(c, http.StatusInternalServerError, 50028, "get system prompt failed")
+		return
+	}
+	response.OK(c, row)
+}