v2.8.0 WIP: create/upload files + commit history + labels sync

- POST /api/gitea/projects/{owner}/{repo}/upload (binary upload)
- get_file_commits() in GiteaClient
- GET /api/gitea/projects/{owner}/{repo}/commits (per-file history)
- POST .../sync-labels (Gitea labels → FlowDeck tags)
- New file form + upload button in gitea_workspace.html topbar

app/templates/workspaces.html

@@ -69,6 +69,10 @@
 .org-tab.active{background:var(--accent);color:#fff;border-color:var(--accent);}
 .org-tab-badge{font-size:10px;padding:0 5px;border-radius:8px;background:rgba(255,255,255,.15);}
 .search-input:focus{border-color:var(--accent);}
+
+/* ── Skeleton loading animation ── */
+.skeleton{background:var(--bg-tertiary);animation:pulse 1.5s ease-in-out infinite;border-radius:4px;}
+@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
 </style>
 
 <div class="ws-page" x-data="workspacesPage()">
@@ -109,8 +113,16 @@
       <a class="gitea-connect" href="/auth/login?provider=gitea">📝 Register with Gitea</a>
     </div>
 
-    <!-- Loading -->
-    <div class="gitea-loading" x-show="giteaStatus==='loading'">Loading Gitea projects…</div>
+    <!-- Loading skeletons -->
+    <div x-show="giteaStatus==='loading'" class="ws-grid">
+      <template x-for="i in 6" :key="i">
+        <div class="ws-card" style="pointer-events:none;">
+          <div class="skeleton" style="height:16px;width:65%;margin-bottom:8px;"></div>
+          <div class="skeleton" style="height:12px;width:45%;margin-bottom:6px;"></div>
+          <div class="skeleton" style="height:12px;width:80%;"></div>
+        </div>
+      </template>
+    </div>
 
     <!-- Error -->
     <div class="gitea-empty" x-show="giteaStatus==='error'">