feat: version list with verification + deployed badge (stage 3)

- pulp_client: list_versions / list_distributions / get_publication
- GET /repos/{uuid}/versions: 버전 목록 페이지(최신순)
- 현재 운영 배포 버전 판별: Distribution→publication→repository_version 역추적
- views.build_version_view: vN, 생성일시, 패키지 수, 증감(+/-), 검증 배지, 배포 여부
- views.verification_detail: gpgcheck/repo-gpgcheck/checksum 상세 (화면4)
- 대시보드 저장소명 → 버전 페이지 링크, [이 버전 배포] 버튼은 단계4용 placeholder
- 단계1 TODO(배포 버전 역추적) 해소

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/templates/partials/repo_list.html

@@ -25,7 +25,7 @@
         <tbody>
           {% for repo in repos %}
           <tr>
-            <td class="repo-name">{{ repo.name }}</td>
+            <td class="repo-name"><a href="/repos/{{ repo.uuid }}/versions">{{ repo.name }}</a></td>
             <td><span class="badge badge-{{ repo.gpg.level }}">{{ repo.gpg.label }}</span></td>
             <td class="num">{% if repo.latest_version is not none %}v{{ repo.latest_version }}{% else %}—{% endif %}</td>
             <td class="num">{% if repo.package_count is not none %}{{ repo.package_count }}{% else %}—{% endif %}</td>

app/templates/partials/version_list.html

@@ -0,0 +1,41 @@
+<div id="version-list" class="table-card">
+  {% if versions %}
+  <table>
+    <thead>
+      <tr>
+        <th class="num">버전</th>
+        <th>생성일시</th>
+        <th class="num">패키지</th>
+        <th class="num">증감</th>
+        <th>검증</th>
+        <th>배포 상태</th>
+        <th></th>
+      </tr>
+    </thead>
+    <tbody>
+      {% for v in versions %}
+      <tr>
+        <td class="num">v{{ v.number }}</td>
+        <td>{{ v.created or "—" }}</td>
+        <td class="num">{{ v.package_count }}</td>
+        <td class="num">
+          {%- if v.added %}<span class="delta-add">+{{ v.added }}</span>{% endif -%}
+          {%- if v.removed %} <span class="delta-del">−{{ v.removed }}</span>{% endif -%}
+          {%- if not v.added and not v.removed %}—{% endif -%}
+        </td>
+        <td>{% if v.gpg %}<span class="badge badge-{{ v.gpg.level }}">{{ v.gpg.label }}</span>{% endif %}</td>
+        <td>{% if v.is_deployed %}<span class="badge badge-deployed">운영 배포 중</span>{% endif %}</td>
+        <td>
+          {% if not v.is_deployed %}
+          <!-- 배포 버튼 활성화/확인 모달은 단계4에서 연결 -->
+          <button class="secondary" disabled>이 버전 배포</button>
+          {% endif %}
+        </td>
+      </tr>
+      {% endfor %}
+    </tbody>
+  </table>
+  {% else %}
+  <p style="padding:16px;">버전이 없습니다. 먼저 동기화를 실행하세요.</p>
+  {% endif %}
+</div>