feat(vacation): 상세 — 승인은 취소처리, 미승인(작성중/제출/반려)은 삭제(hard)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/modules/vacation/templates/vacation/detail.html

@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530d" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530e" />{% endblock %}
 
 {% block content %}
 <section class="vac">
@@ -65,11 +65,18 @@
       </form>
       {% endif %}
 
-      {% if req.status != '취소' and (is_owner or is_admin) %}
-      <form method="post" action="/vacation/{{ req.id }}/cancel" class="vac-inline-form"
-            onsubmit="return confirm('이 휴가 신청을 취소 처리할까요?');">
-        <button type="submit" class="erp-btn erp-btn-outline">취소처리</button>
-      </form>
+      {% if (is_owner or is_admin) %}
+        {% if req.status == '승인' %}
+        <form method="post" action="/vacation/{{ req.id }}/cancel" class="vac-inline-form"
+              onsubmit="return confirm('승인된 휴가를 취소 처리할까요?');">
+          <button type="submit" class="erp-btn erp-btn-outline">취소처리</button>
+        </form>
+        {% elif req.status in ('작성중', '제출', '반려') %}
+        <form method="post" action="/vacation/{{ req.id }}/delete" class="vac-inline-form"
+              onsubmit="return confirm('이 휴가 신청을 삭제할까요? (복구 불가)');">
+          <button type="submit" class="erp-btn erp-btn-danger">삭제</button>
+        </form>
+        {% endif %}
       {% endif %}
 
       {% if can_edit %}