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/static/app.js

@@ -12,6 +12,20 @@ function initSidebar() {
 }
 initSidebar();
 
+// ─── Modal Helpers ───
+function openModal(id) {
+  const el = document.getElementById(id);
+  if (el) el.classList.add('open');
+}
+function closeModal(id) {
+  const el = document.getElementById(id);
+  if (el) el.classList.remove('open');
+}
+document.addEventListener('keydown', function(e) {
+  if (e.key !== 'Escape') return;
+  document.querySelectorAll('.modal-bg.open').forEach(el => el.classList.remove('open'));
+});
+
 // ─── Global Time Control ───
 function openTimeModal() {
   const display = document.getElementById('sim-time-display');
@@ -42,6 +56,15 @@ async function shiftTime(days) {
 async function resetTime() {
   await setSimTimeAndReload('2060-03-12 09:00');
 }
+function toggleTheme() {
+  const root = document.documentElement;
+  const current = root.dataset.theme || 'dark';
+  const next = current === 'dark' ? 'light' : 'dark';
+  root.dataset.theme = next;
+  root.style.colorScheme = next;
+  try { localStorage.setItem('ksp-theme', next); } catch(e) {}
+}
+
 async function setSimTimeAndReload(timeStr) {
   try {
     await fetch('/api/v1/sim-time', {