feat(service): add pagination to GetJobs endpoint

GetJobs now accepts page/page_size query parameters and returns JobListResponse instead of raw array. Uses in-memory pagination matching GetJobHistory pattern.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/handler/job.go

@@ -46,16 +46,30 @@ func (h *JobHandler) SubmitJob(c *gin.Context) {
 	server.Created(c, resp)
 }
 
-// GetJobs handles GET /api/v1/jobs.
+// GetJobs handles GET /api/v1/jobs with pagination.
 func (h *JobHandler) GetJobs(c *gin.Context) {
-	jobs, err := h.jobSvc.GetJobs(c.Request.Context())
+	var query model.JobListQuery
+	if err := c.ShouldBindQuery(&query); err != nil {
+		h.logger.Warn("bad request", zap.String("method", "GetJobs"), zap.String("error", "invalid query params"))
+		server.BadRequest(c, "invalid query params")
+		return
+	}
+
+	if query.Page < 1 {
+		query.Page = 1
+	}
+	if query.PageSize < 1 {
+		query.PageSize = 20
+	}
+
+	resp, err := h.jobSvc.GetJobs(c.Request.Context(), &query)
 	if err != nil {
 		h.logger.Error("handler error", zap.String("method", "GetJobs"), zap.Int("status", http.StatusInternalServerError), zap.Error(err))
 		server.InternalError(c, err.Error())
 		return
 	}
 
-	server.OK(c, jobs)
+	server.OK(c, resp)
 }
 
 // GetJob handles GET /api/v1/jobs/:id.