fix(ui): modal drag + removed startDrag func (#2430)

* fixed

* removed legacy startDrag fc, unified modal dragging

* fixes post feedback

static/app.js

@@ -13,6 +13,7 @@ import chatModule from './js/chat.js';
 import compareModule from './js/compare/index.js';
 import documentModule from './js/document.js';
 import searchChatModule from './js/search-chat.js';
+import { makeWindowDraggable } from './js/windowDrag.js';
 import markdownModule from './js/markdown.js';
 import chatRenderer from './js/chatRenderer.js';
 import sessionModule from './js/sessions.js';
@@ -2683,18 +2684,27 @@ function initializeEventListeners() {
     // Apply saved visibility on load
     applyUIVis(loadUIVis());
 
-    // Generic draggable for all .modal elements
-    const _sharedDragModalIds = new Set(['settings-modal']);
-    try { document.querySelectorAll('.modal').forEach(m => {
-      if (_sharedDragModalIds.has(m.id)) return;
+    // The only two modals without a per-module makeWindowDraggable call. Wire
+    // them onto the shared helper, drag-only, to match their old behavior.
+    try {
+      ['custom-preset-modal', 'rename-session-modal'].forEach((id) => {
+        const m = document.getElementById(id);
+        if (!m) return;
         const content = m.querySelector('.modal-content');
         const header = m.querySelector('.modal-header');
         if (!content || !header) return;
-      let dragX, dragY, startLeft, startTop, dragging = false;
-
-      // Reset to flex-centered position each time modal opens
+        makeWindowDraggable(m, {
+          content, header,
+          skipSelector: '.close-btn',
+          enableDock: false,
+          enableResize: false,
+        });
+        // Re-center on open (these persist in the DOM). Guard on the
+        // hidden→visible edge so it never fires mid-drag.
+        let wasHidden = m.classList.contains('hidden');
         new MutationObserver(() => {
-        if (!m.classList.contains('hidden')) {
+          const isHidden = m.classList.contains('hidden');
+          if (wasHidden && !isHidden) {
             content.style.position = '';
             content.style.left = '';
             content.style.top = '';
@@ -2702,63 +2712,10 @@ function initializeEventListeners() {
             content.style.bottom = '';
             content.style.margin = '';
           }
+          wasHidden = isHidden;
         }).observe(m, { attributes: true, attributeFilter: ['class'] });
-
-      function startDrag(clientX, clientY) {
-        dragging = true;
-        const rect = content.getBoundingClientRect();
-        dragX = clientX; dragY = clientY;
-        startLeft = rect.left; startTop = rect.top;
-        // Switch to fixed so it can be freely positioned
-        content.style.position = 'fixed';
-        content.style.left = startLeft + 'px';
-        content.style.top = startTop + 'px';
-        content.style.margin = '0';
-      }
-
-      header.addEventListener('mousedown', (e) => {
-        if (e.target.closest('.close-btn')) return;
-        e.preventDefault();
-        startDrag(e.clientX, e.clientY);
-        document.addEventListener('mousemove', onDrag);
-        document.addEventListener('mouseup', stopDrag);
       });
-      function onDrag(e) {
-        if (!dragging) return;
-        content.style.left = (startLeft + e.clientX - dragX) + 'px';
-        content.style.top = (startTop + e.clientY - dragY) + 'px';
-      }
-      function stopDrag() {
-        dragging = false;
-        document.removeEventListener('mousemove', onDrag);
-        document.removeEventListener('mouseup', stopDrag);
-      }
-
-      // Touch drag is desktop-only — on mobile, modals are bottom sheets and
-      // ui.js handles swipe-down-to-dismiss. Attaching this listener fights
-      // the swipe-dismiss gesture.
-      if (window.innerWidth > 768) {
-        header.addEventListener('touchstart', (e) => {
-          if (e.target.closest('.close-btn')) return;
-          const t = e.touches[0];
-          startDrag(t.clientX, t.clientY);
-          document.addEventListener('touchmove', onTouchDrag, { passive: false });
-          document.addEventListener('touchend', stopTouchDrag);
-        });
-      }
-      function onTouchDrag(e) {
-        if (!dragging) return;
-        e.preventDefault();
-        const t = e.touches[0];
-        content.style.left = (startLeft + t.clientX - dragX) + 'px';
-        content.style.top = (startTop + t.clientY - dragY) + 'px';
-      }
-      function stopTouchDrag() {
-        dragging = false;
-        document.removeEventListener('touchmove', onTouchDrag);
-        document.removeEventListener('touchend', stopTouchDrag);
-      }
-    }); } catch(e) { console.error('Modal drag init error:', e); }
+    } catch (e) { console.error('Dialog drag init error:', e); }
   })();
 
   // ── Modal minimize → dock ──

static/js/windowDrag.js

@@ -149,6 +149,13 @@ export function makeWindowDraggable(modal, options = {}) {
   const _startDrag = (cx, cy) => {
     dragging = true;
     if (modal) modal.classList.add('modal-dragging');
+    // Cancel any in-flight open animation so we don't pin a mid-animation
+    // rect and then jump once the animation settles.
+    try {
+      content.getAnimations()
+        .filter(a => a.playState !== 'finished')
+        .forEach(a => a.cancel());
+    } catch (_) {}
     const rect = content.getBoundingClientRect();
     if (onDragStart) {
       try { onDragStart({ rect, cx, cy }); } catch (_) {}

static/sw.js

@@ -7,7 +7,7 @@
 //   - Other static assets (images/fonts/libs): cache-first with bg refresh.
 //   - API / non-GET: never cached.
 // Bump CACHE_NAME whenever the precache list or SW logic changes.
-const CACHE_NAME = 'odysseus-v326';
+const CACHE_NAME = 'odysseus-v327';
 
 // Core shell precached on install so repeat opens are instant without any
 // network wait. Keep this list in sync with the <script type="module"> tags