feat(project): 아사나식 프로젝트 관리 모듈 추가

- project_db 신규(projects/members/stages/tasks/comments/activity, project_app CRUD)
- 프로젝트/서브프로젝트(self-FK), 업무·진행단계(칸반), 멤버 배정
- 메인 뷰 달력(FullCalendar)/타임라인(vis-timeline) 토글 + 보드/리스트
- 진입은 로그인 회사 직원 전원, 생성/배정은 관리자 전용
- 업무 배정·완료 시 관리자 메일 알림(app/mail.py, SMTP_* env, 미설정 시 skip)

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

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

@@ -0,0 +1,98 @@
+{% extends "erp_base.html" %}
+
+{% block head_extra %}
+<link rel="stylesheet" href="/static/project.css?v=20260625a" />
+{% endblock %}
+
+{% block content %}
+<div class="pj-wrap" data-is-admin="{{ 'true' if is_admin else 'false' }}">
+
+  <div class="pj-home">
+    <!-- 프로젝트 목록 -->
+    <section class="pj-home-main">
+      <div class="pj-section-head">
+        <h2>프로젝트</h2>
+        {% if is_admin %}
+        <button type="button" class="pj-btn pj-btn-primary" id="pj-new-project">
+          + 새 프로젝트
+        </button>
+        {% endif %}
+      </div>
+
+      {% if not tree %}
+      <div class="pj-empty">
+        아직 프로젝트가 없습니다.
+        {% if is_admin %}상단의 <b>새 프로젝트</b> 버튼으로 만들어 보세요.
+        {% else %}관리자가 프로젝트에 배정하면 여기에 표시됩니다.{% endif %}
+      </div>
+      {% endif %}
+
+      <div class="pj-project-grid">
+        {% for p in tree %}
+        <a class="pj-project-card" href="/project/p/{{ p.id }}"
+           style="--pj-color: {{ p.color }}">
+          <span class="pj-project-dot"></span>
+          <div class="pj-project-body">
+            <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>
+        </a>
+        {% endfor %}
+      </div>
+    </section>
+
+    <!-- 내 업무 -->
+    <aside class="pj-home-side">
+      <div class="pj-section-head"><h2>내 업무</h2></div>
+      {% if not my_tasks %}
+      <div class="pj-empty pj-empty-sm">배정된 업무가 없습니다.</div>
+      {% else %}
+      <ul class="pj-mytask-list">
+        {% for t in my_tasks %}
+        <li class="pj-mytask {% if t.completed_at %}is-done{% endif %}">
+          <a href="/project/p/{{ t.project_id }}">
+            <span class="pj-mytask-dot" style="background: {{ t.project_color }}"></span>
+            <span class="pj-mytask-title">{{ t.title }}</span>
+            <span class="pj-mytask-meta">
+              {{ t.project_name }}{% if t.due_date %} · {{ t.due_date }}{% endif %}
+            </span>
+          </a>
+        </li>
+        {% endfor %}
+      </ul>
+      {% endif %}
+    </aside>
+  </div>
+</div>
+
+<!-- 새 프로젝트 모달 -->
+{% if is_admin %}
+<div class="pj-modal" id="pj-modal-project" hidden>
+  <div class="pj-modal-card">
+    <h3>새 프로젝트</h3>
+    <label>이름<input type="text" id="pj-f-name" placeholder="프로젝트 이름" /></label>
+    <label>설명<textarea id="pj-f-desc" rows="2"></textarea></label>
+    <div class="pj-form-row">
+      <label>시작일<input type="date" id="pj-f-start" /></label>
+      <label>마감일<input type="date" id="pj-f-due" /></label>
+    </div>
+    <label>색상
+      <span class="pj-color-palette" id="pj-f-colors"></span>
+    </label>
+    <div class="pj-modal-actions">
+      <button type="button" class="pj-btn" data-close>취소</button>
+      <button type="button" class="pj-btn pj-btn-primary" id="pj-save-project">만들기</button>
+    </div>
+  </div>
+</div>
+{% endif %}
+
+<script>
+  window.PJ_COLORS = {{ ["#4573d2","#37a3a3","#62a420","#e8a33d","#e8384f","#aa62e3","#f06a6a","#5a6772"] | tojson }};
+</script>
+<script src="/static/project.js?v=20260625a" defer></script>
+{% endblock %}

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

@@ -0,0 +1,166 @@
+{% extends "erp_base.html" %}
+
+{% block head_extra %}
+<link rel="stylesheet" href="/static/project.css?v=20260625a" />
+<!-- FullCalendar (달력) · vis-timeline (타임라인) — 스켈레톤 단계는 CDN, 추후 self-host -->
+<link href="https://cdn.jsdelivr.net/npm/fullcalendar@6.1.15/index.global.min.css" rel="stylesheet" />
+<link href="https://cdn.jsdelivr.net/npm/vis-timeline@7.7.3/styles/vis-timeline-graph2d.min.css" rel="stylesheet" />
+{% endblock %}
+
+{% block content %}
+<div class="pj-wrap pj-project-view"
+     data-project-id="{{ project.id }}"
+     data-can-manage="{{ 'true' if can_manage else 'false' }}"
+     data-is-admin="{{ 'true' if is_admin else 'false' }}"
+     data-me="{{ user.email }}">
+
+  <div class="pj-layout">
+    <!-- ── 좌측: 서브프로젝트 + 멤버 ── -->
+    <aside class="pj-side">
+      <div class="pj-side-block">
+        <div class="pj-side-head">
+          <span>서브프로젝트</span>
+          {% if can_manage %}
+          <button type="button" class="pj-icon-btn" id="pj-new-sub" title="서브프로젝트 추가">+</button>
+          {% endif %}
+        </div>
+        <ul class="pj-sub-list" id="pj-sub-list">
+          {% for s in subprojects %}
+          <li>
+            <a href="/project/p/{{ s.id }}">
+              <span class="pj-sub-dot" style="background: {{ s.color }}"></span>{{ s.name }}
+            </a>
+            {% if can_manage %}
+            <button type="button" class="pj-icon-btn pj-del-sub" data-id="{{ s.id }}" title="삭제">×</button>
+            {% endif %}
+          </li>
+          {% else %}
+          <li class="pj-empty-sm">없음</li>
+          {% endfor %}
+        </ul>
+      </div>
+
+      <div class="pj-side-block">
+        <div class="pj-side-head">
+          <span>멤버</span>
+          {% if is_admin %}
+          <button type="button" class="pj-icon-btn" id="pj-add-member" title="멤버 배정">+</button>
+          {% endif %}
+        </div>
+        <ul class="pj-member-list" id="pj-member-list">
+          {% for m in members %}
+          <li>
+            <span class="pj-avatar">{{ (m.user_name or m.user_email)[0] | upper }}</span>
+            <span class="pj-member-name">{{ m.user_name or m.user_email }}</span>
+            {% if m.role == 'manager' %}<span class="pj-chip pj-chip-sm">관리</span>{% endif %}
+            {% if is_admin %}
+            <button type="button" class="pj-icon-btn pj-del-member" data-email="{{ m.user_email }}" title="제외">×</button>
+            {% endif %}
+          </li>
+          {% else %}
+          <li class="pj-empty-sm">없음</li>
+          {% endfor %}
+        </ul>
+      </div>
+    </aside>
+
+    <!-- ── 우측: 뷰 ── -->
+    <section class="pj-main">
+      <div class="pj-toolbar">
+        <div class="pj-view-tabs" id="pj-view-tabs">
+          <button type="button" class="pj-tab is-active" data-view="calendar">달력</button>
+          <button type="button" class="pj-tab" data-view="timeline">타임라인</button>
+          <button type="button" class="pj-tab" data-view="board">보드</button>
+          <button type="button" class="pj-tab" data-view="list">리스트</button>
+        </div>
+        {% if can_manage %}
+        <button type="button" class="pj-btn pj-btn-primary" id="pj-new-task">+ 업무 추가</button>
+        {% endif %}
+      </div>
+
+      <!-- 달력 -->
+      <div class="pj-view" data-view="calendar">
+        <div id="pj-calendar"></div>
+      </div>
+      <!-- 타임라인 -->
+      <div class="pj-view" data-view="timeline" hidden>
+        <div id="pj-timeline"></div>
+      </div>
+      <!-- 보드(칸반) -->
+      <div class="pj-view" data-view="board" hidden>
+        <div class="pj-board" id="pj-board"></div>
+      </div>
+      <!-- 리스트 -->
+      <div class="pj-view" data-view="list" hidden>
+        <table class="pj-table" id="pj-list">
+          <thead>
+            <tr><th>업무</th><th>담당자</th><th>단계</th><th>우선순위</th><th>시작</th><th>마감</th></tr>
+          </thead>
+          <tbody></tbody>
+        </table>
+      </div>
+    </section>
+  </div>
+</div>
+
+<!-- 업무 모달 -->
+<div class="pj-modal" id="pj-modal-task" hidden>
+  <div class="pj-modal-card">
+    <h3 id="pj-task-modal-title">새 업무</h3>
+    <input type="hidden" id="pj-t-id" />
+    <label>제목<input type="text" id="pj-t-title" placeholder="업무 제목" /></label>
+    <label>설명<textarea id="pj-t-desc" rows="2"></textarea></label>
+    <div class="pj-form-row">
+      <label>담당자
+        <select id="pj-t-assignee">
+          <option value="">(미지정)</option>
+          {% for m in members %}
+          <option value="{{ m.user_email }}" data-name="{{ m.user_name or m.user_email }}">
+            {{ m.user_name or m.user_email }}
+          </option>
+          {% endfor %}
+        </select>
+      </label>
+      <label>단계
+        <select id="pj-t-stage">
+          {% for s in stages %}
+          <option value="{{ s.id }}">{{ s.name }}</option>
+          {% endfor %}
+        </select>
+      </label>
+    </div>
+    <div class="pj-form-row">
+      <label>우선순위
+        <select id="pj-t-priority">
+          <option value="low">낮음</option>
+          <option value="normal" selected>보통</option>
+          <option value="high">높음</option>
+        </select>
+      </label>
+      <label>시작일<input type="date" id="pj-t-start" /></label>
+      <label>마감일<input type="date" id="pj-t-due" /></label>
+    </div>
+    <div class="pj-modal-actions">
+      <button type="button" class="pj-btn pj-btn-danger" id="pj-delete-task" hidden>삭제</button>
+      <span style="flex:1"></span>
+      <button type="button" class="pj-btn" data-close>취소</button>
+      <button type="button" class="pj-btn pj-btn-primary" id="pj-save-task">저장</button>
+    </div>
+  </div>
+</div>
+
+<!-- 데이터 -->
+<script id="pj-data" type="application/json">
+{
+  "project": {{ project | tojson }},
+  "stages": {{ stages | tojson }},
+  "tasks": {{ tasks | tojson }},
+  "members": {{ members | tojson }},
+  "priorityLabels": {{ priority_labels | tojson }}
+}
+</script>
+
+<script src="https://cdn.jsdelivr.net/npm/fullcalendar@6.1.15/index.global.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/vis-timeline@7.7.3/standalone/umd/vis-timeline-graph2d.min.js"></script>
+<script src="/static/project.js?v=20260625a" defer></script>
+{% endblock %}