feat: docking log management, sim_time DB-only, modal helpers

- Add docking_log_list and docking_log_delete routes with dedicated page
- _append_docking_log: detect existing state interval before creating new entry
- _append_undocking_log: find entry by node title+at_time, accept docked_at param
- Fix _entry_state_label and _entry_location to return time-correct values
- Add api_set_sim_time POST endpoint; remove sim_time from all url_for() calls
- _resolve_simulation_time simplified to DB-only (no URL param)
- app.js: add openModal/closeModal/toggleTheme helpers
- base.html: add 对接日志管理 nav item, remove Today button

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/templates/base.html

@@ -79,6 +79,15 @@
                 <span class="ic">⇄</span>燃料换算
             </a>
 
+            <div class="nst" onclick="this.classList.toggle('on')">
+                <span class="ar">▾</span>控制台
+            </div>
+            <div class="niw">
+                <a class="ni su{% if active_page == 'docking_logs' %} act{% endif %}" href="{{ url_for('web.docking_log_list') }}">
+                    <span class="ic">⫘</span>对接日志管理
+                </a>
+            </div>
+
             <a class="ni" href="{{ url_for('api.health') }}">
                 <span class="ic">📡</span>API 健康检查
             </a>