feat(project): 서브프로젝트 제거, 사이드 트리를 프로젝트→업무 2단계로

요구에 따라 서브프로젝트 개념을 UI 에서 제거. 좌측 트리를 프로젝트(최상위)
→ 그 안의 업무 2단계로 재구성:
- 프로젝트 노드(folder) 펼치면 소속 업무가 체크 아이콘으로 표시
- 업무 클릭 → /project/p/{id}?task={tid} 로 이동 후 해당 업무 모달 자동 오픈
- 완료 업무는 취소선. 트리에서 프로젝트 삭제(관리자)
- 과거 parent_id 서브프로젝트는 트리/홈에서 숨김(최상위만 노출)
- 홈 카드의 '서브 N' 칩 제거

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

app/modules/project/router.py

@@ -356,12 +356,31 @@ async def project_page(request: Request, project_id: int) -> HTMLResponse:
         include_archived=False,
         member_email=None if admin else user["email"],
     )
-    tree = _build_tree(all_projects)
     stages = st.list_stages(project_id=project_id)
-    tasks = st.list_tasks(project_id=project_id, include_subprojects=True, limit=2000)
+    tasks = st.list_tasks(project_id=project_id, limit=2000)
     members = st.list_members(project_id=project_id)
     can_manage = _can_manage(request, st, user, project_id)
-    subprojects = [p for p in all_projects if p.get("parent_id") == project_id]
+
+    # 좌측 트리: 프로젝트(최상위) → 그 안의 업무. (서브프로젝트 개념 제거)
+    nav_projects: list[dict[str, Any]] = []
+    for p in all_projects:
+        if p.get("parent_id"):
+            continue  # 과거 서브프로젝트는 트리에서 제외
+        p_tasks = (
+            tasks if p["id"] == project_id
+            else st.list_tasks(project_id=p["id"], limit=500)
+        )
+        nav_projects.append({
+            "id": p["id"],
+            "name": p["name"],
+            "color": p.get("color") or "#4573d2",
+            "tasks": [
+                {"id": t["id"], "title": t["title"],
+                 "color": t.get("project_color") or p.get("color") or "#4573d2",
+                 "completed": bool(t.get("completed_at"))}
+                for t in p_tasks
+            ],
+        })
 
     # 달력(휴가식 월간 그리드) — ?y=&m= 로 월 이동, 기본 이번 달
     today = today_kst()
@@ -387,11 +406,10 @@ async def project_page(request: Request, project_id: int) -> HTMLResponse:
             "page_title": project["name"],
             "page_subtitle": project.get("description") or "프로젝트 보드",
             "project": project,
-            "tree": tree,
+            "nav_projects": nav_projects,
             "stages": stages,
             "tasks": tasks,
             "members": members,
-            "subprojects": subprojects,
             "priority_labels": store.PRIORITY_LABELS,
             "color_palette": list(store.COLOR_PALETTE),
             "today": today.isoformat(),

app/modules/project/templates/project/inbox.html

@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260625j" />
+<link rel="stylesheet" href="/static/project.css?v=20260625k" />
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 {% endblock %}
 
@@ -45,5 +45,5 @@
   {% endif %}
 </div>
 
-<script src="/static/project.js?v=20260625j" defer></script>
+<script src="/static/project.js?v=20260625k" defer></script>
 {% endblock %}

app/modules/project/templates/project/index.html

@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260625j" />
+<link rel="stylesheet" href="/static/project.css?v=20260625k" />
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 {% endblock %}
 
@@ -43,7 +43,6 @@
             <div class="pj-project-name">{{ p.name }}</div>
             {% if p.description %}<div class="pj-project-desc">{{ p.description }}</div>{% endif %}
             <div class="pj-project-meta">
-              {% if p.children %}<span class="pj-chip">서브 {{ p.children|length }}</span>{% endif %}
               {% if p.due_date %}<span class="pj-chip">마감 {{ p.due_date }}</span>{% endif %}
             </div>
           </div>
@@ -101,5 +100,5 @@
 <script>
   window.PJ_COLORS = {{ ["#4573d2","#37a3a3","#62a420","#e8a33d","#e8384f","#aa62e3","#f06a6a","#5a6772"] | tojson }};
 </script>
-<script src="/static/project.js?v=20260625j" defer></script>
+<script src="/static/project.js?v=20260625k" defer></script>
 {% endblock %}

app/modules/project/templates/project/project.html

@@ -1,49 +1,13 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/project.css?v=20260625j" />
+<link rel="stylesheet" href="/static/project.css?v=20260625k" />
 <!-- 구글 머티리얼 심볼(담당자 아이콘 등) — self-host -->
 <link rel="stylesheet" href="/static/vendor/material-symbols/material-symbols.css" />
 <!-- 타임라인 vis-timeline — self-host -->
 <link href="/static/vendor/vis-timeline/vis-timeline-graph2d.min.css" rel="stylesheet" />
 {% endblock %}
 
-{# ── 아사나식 프로젝트/서브프로젝트 재귀 트리 ── #}
-{% macro proj_tree(nodes, active_id, can_edit, depth) %}
-<ul class="pj-tree" {% if depth > 0 %}data-sub="1"{% endif %}>
-  {% for n in nodes %}
-  <li class="pj-tree-li" data-id="{{ n.id }}">
-    <div class="pj-tree-row {% if n.id == active_id %}is-active{% endif %}" style="--pj-indent: {{ depth }}">
-      {% if n.children %}
-      <button type="button" class="pj-tree-caret" aria-expanded="false" title="펼치기/접기">
-        <span class="material-symbols-outlined">chevron_right</span>
-      </button>
-      {% else %}
-      <span class="pj-tree-caret-spacer"></span>
-      {% endif %}
-      <a class="pj-tree-link" href="/project/p/{{ n.id }}">
-        <span class="pj-tree-icon material-symbols-outlined" style="color: {{ n.color }}">
-          {% if n.children %}folder{% else %}check_circle{% endif %}
-        </span>
-        <span class="pj-tree-name">{{ n.name }}</span>
-      </a>
-      {% if can_edit %}
-      <span class="pj-tree-acts">
-        <button type="button" class="pj-icon-btn pj-tree-addsub" data-id="{{ n.id }}" title="서브프로젝트 추가">+</button>
-        <button type="button" class="pj-icon-btn pj-tree-del" data-id="{{ n.id }}" data-name="{{ n.name }}" title="삭제">×</button>
-      </span>
-      {% endif %}
-    </div>
-    {% if n.children %}
-    <div class="pj-tree-children" hidden>
-      {{ proj_tree(n.children, active_id, can_edit, depth + 1) }}
-    </div>
-    {% endif %}
-  </li>
-  {% endfor %}
-</ul>
-{% endmacro %}
-
 {% block topbar_actions %}
 <a class="pj-bell" href="/project/inbox" title="알림센터">
   <span class="material-symbols-outlined">notifications</span>
@@ -71,8 +35,50 @@
           <button type="button" class="pj-icon-btn" id="pj-new-project-side" title="새 프로젝트">+</button>
           {% endif %}
         </div>
-        {% if tree %}
-        {{ proj_tree(tree, project.id, (is_admin or can_manage), 0) }}
+        {% if nav_projects %}
+        <ul class="pj-tree">
+          {% for p in nav_projects %}
+          <li class="pj-tree-li" data-id="{{ p.id }}">
+            <div class="pj-tree-row {% if p.id == project.id %}is-active{% endif %}">
+              {% if p.tasks %}
+              <button type="button" class="pj-tree-caret" aria-expanded="false" title="펼치기/접기">
+                <span class="material-symbols-outlined">chevron_right</span>
+              </button>
+              {% else %}
+              <span class="pj-tree-caret-spacer"></span>
+              {% endif %}
+              <a class="pj-tree-link" href="/project/p/{{ p.id }}">
+                <span class="pj-tree-icon material-symbols-outlined" style="color: {{ p.color }}">folder</span>
+                <span class="pj-tree-name">{{ p.name }}</span>
+              </a>
+              {% if is_admin %}
+              <span class="pj-tree-acts">
+                <button type="button" class="pj-icon-btn pj-tree-del" data-id="{{ p.id }}" data-name="{{ p.name }}" title="프로젝트 삭제">×</button>
+              </span>
+              {% endif %}
+            </div>
+            {% if p.tasks %}
+            <div class="pj-tree-children" hidden>
+              <ul class="pj-tree">
+                {% for t in p.tasks %}
+                <li class="pj-tree-li pj-tree-task">
+                  <div class="pj-tree-row" style="--pj-indent: 1">
+                    <span class="pj-tree-caret-spacer"></span>
+                    <a class="pj-tree-link pj-tree-tasklink"
+                       href="/project/p/{{ p.id }}?task={{ t.id }}"
+                       data-project="{{ p.id }}" data-task="{{ t.id }}">
+                      <span class="pj-tree-icon material-symbols-outlined" style="color: {{ t.color }}">{% if t.completed %}task_alt{% else %}radio_button_unchecked{% endif %}</span>
+                      <span class="pj-tree-name {% if t.completed %}pj-tree-done{% endif %}">{{ t.title }}</span>
+                    </a>
+                  </div>
+                </li>
+                {% endfor %}
+              </ul>
+            </div>
+            {% endif %}
+          </li>
+          {% endfor %}
+        </ul>
         {% else %}
         <div class="pj-empty-sm">프로젝트 없음</div>
         {% endif %}
@@ -284,5 +290,5 @@
 </script>
 
 <script src="/static/vendor/vis-timeline/vis-timeline-graph2d.min.js"></script>
-<script src="/static/project.js?v=20260625j" defer></script>
+<script src="/static/project.js?v=20260625k" defer></script>
 {% endblock %}

app/static/project.css

@@ -85,6 +85,8 @@
 .pj-tree-acts { display: none; gap: 0; flex: 0 0 auto; }
 .pj-tree-row:hover .pj-tree-acts { display: inline-flex; }
 .pj-tree-acts .pj-icon-btn { width: 22px; height: 22px; font-size: 14px; }
+.pj-tree-done { text-decoration: line-through; color: #9aa1a9; }
+.pj-tree-task .pj-tree-name { font-size: 13px; color: #444; }
 
 /* 구글 머티리얼 심볼 아이콘(담당자) */
 .material-symbols-outlined { font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24; line-height: 1; vertical-align: middle; }

app/static/project.js

@@ -637,23 +637,11 @@
       }
     })();
 
-    // 서브프로젝트 추가 (트리 각 노드)
-    document.querySelectorAll(".pj-tree-addsub").forEach(function (b) {
-      b.addEventListener("click", async function (e) {
-        e.preventDefault(); e.stopPropagation();
-        const name = prompt("서브프로젝트 이름");
-        if (!name || !name.trim()) return;
-        try {
-          await api("POST", "/project/api/projects/" + b.dataset.id + "/subprojects", { name: name.trim() });
-          location.reload();
-        } catch (err) { alert("생성 실패: " + err.message); }
-      });
-    });
-    // 프로젝트/서브 삭제 (트리)
+    // 프로젝트 삭제 (트리)
     document.querySelectorAll(".pj-tree-del").forEach(function (b) {
       b.addEventListener("click", async function (e) {
         e.preventDefault(); e.stopPropagation();
-        if (!confirm("'" + (b.dataset.name || "") + "' 삭제할까요? 하위 서브프로젝트·업무도 모두 삭제됩니다.")) return;
+        if (!confirm("'" + (b.dataset.name || "") + "' 프로젝트를 삭제할까요? 안의 업무도 모두 삭제됩니다.")) return;
         try {
           await api("DELETE", "/project/api/projects/" + b.dataset.id);
           if (String(b.dataset.id) === String(projectId)) location.href = "/project/";
@@ -720,6 +708,13 @@
 
     // 최초 렌더 — 달력은 서버 렌더, 클릭 핸들러만 연결
     wireCalendar();
+
+    // 사이드 트리에서 업무 클릭(?task=ID)으로 들어오면 해당 업무 모달 자동 열기
+    const taskParam = new URLSearchParams(location.search).get("task");
+    if (taskParam) {
+      const t = tasks.find(function (x) { return String(x.id) === String(taskParam); });
+      if (t) openTaskModal(t);
+    }
   }
 
   function idOf(email) {