feat: plan tomorrow independently (Closes #1152)

frontend/index.html

@@ -192,6 +192,7 @@
             <button class="work-filter" data-work-filter="later" aria-pressed="false">Later <span data-work-count="later">0</span></button>
             <button class="work-filter" data-work-filter="draft" aria-pressed="false">Drafts <span data-work-count="draft">0</span></button>
           </div>
+          <button class="plan-tomorrow" id="plan-tomorrow" type="button">Plan Tomorrow</button>
           <label class="milestone-lane" for="work-milestone-filter"><span class="small">Release lane</span>
             <select class="work-milestone-filter" id="work-milestone-filter">
               <option value="all">All milestones</option>
@@ -1918,6 +1919,7 @@
 <script src="static/plan-today.js"></script>
 <script src="static/plan-today-readiness.js"></script>
 <script src="static/plan-today-preview.js"></script>
+<script src="static/tomorrow-plan.js"></script>
 <script src="static/today-sync.js"></script>
 <script src="static/today-rollover.js"></script>
 <script src="static/update-ownership.js"></script>