fix: API validation + Terraform plan-time validators

API (operator v0.1.13):
- functions.go: добавлена валидация entrypoint (не пустой) и
  memory_mb (1-4096). Фиксирует БАГ-1/2/4 из негативных тестов.
- triggers.go: добавлена валидация type (только 'http'/'cron').
  Фиксирует БАГ-3 (неверное сообщение об ошибке).

Провайдер (v0.1.7):
- Добавлен пакет terraform-plugin-framework-validators v0.19.0
- function_resource: runtime OneOf, memory_mb 1-4096, timeout_sec 1-900
- trigger_resource: type OneOf(http, cron)
- job_resource: run_id AtLeast(0)
- examples/main.tf: обновлена версия до ~> 0.1.7

doc/errors/log.md: задокументированы исправления и результаты повторных тестов

internal/api/handler/functions.go

@@ -89,6 +89,14 @@ func (h *Handler) CreateFunction(w http.ResponseWriter, r *http.Request) {
 		writeJSON(w, http.StatusBadRequest, errResp("name and runtime are required"))
 		return
 	}
+	if req.Entrypoint == "" {
+		writeJSON(w, http.StatusBadRequest, errResp("entrypoint is required"))
+		return
+	}
+	if req.MemoryMB <= 0 || req.MemoryMB > 4096 {
+		writeJSON(w, http.StatusBadRequest, errResp("memory_mb must be between 1 and 4096"))
+		return
+	}
 
 	fn := &slessv1alpha1.Function{
 		ObjectMeta: metav1.ObjectMeta{

internal/api/handler/triggers.go

@@ -83,6 +83,10 @@ func (h *Handler) CreateTrigger(w http.ResponseWriter, r *http.Request) {
 		writeJSON(w, http.StatusBadRequest, errResp("name, type and function are required"))
 		return
 	}
+	if req.Type != "http" && req.Type != "cron" {
+		writeJSON(w, http.StatusBadRequest, errResp("type must be \"http\" or \"cron\""))
+		return
+	}
 	if req.Type == "cron" && req.Schedule == "" {
 		writeJSON(w, http.StatusBadRequest, errResp("schedule is required for cron trigger"))
 		return