fix(database): column resize follows mouse, inline rename in context menu

- Column resize: use getBoundingClientRect() + setPointerCapture for proper tracking
- Context menu 'Name' field: click to edit, Enter to save, Escape to cancel
- Rename persists to server via PUT /db/properties/{id}/api

app/templates/_database_table_scripts.html

@@ -164,30 +164,29 @@
         thead.querySelectorAll('.db-col-resize-handle').forEach(handle => {
             handle.onpointerdown = function(e) {
                 e.preventDefault();
+                e.stopPropagation();
+                this.setPointerCapture(e.pointerId);
                 const propId = parseInt(this.dataset.propId);
                 const th = this.parentElement;
                 const startX = e.clientX;
-                const startW = th.offsetWidth;
+                const startW = th.getBoundingClientRect().width;
 
                 function onMove(ev) {
                     const diff = ev.clientX - startX;
                     const newW = Math.max(60, startW + diff);
                     state.colWidths[propId] = newW;
-                    // Update header
                     th.style.width = newW + 'px';
                     th.style.minWidth = newW + 'px';
-                    // Update all cells in this column
                     const colIdx = state.properties.findIndex(p => p.id === propId);
                     if (colIdx >= 0) {
                         document.querySelectorAll('#db-tbody .db-row').forEach(row => {
                             const cells = row.querySelectorAll('.db-td-cell');
-                            if (cells[colIdx]) {
-                                cells[colIdx].style.minWidth = newW + 'px';
-                            }
+                            if (cells[colIdx]) cells[colIdx].style.minWidth = newW + 'px';
                         });
                     }
                 }
-                function onUp() {
+                function onUp(ev) {
+                    handle.releasePointerCapture(ev.pointerId);
                     document.removeEventListener('pointermove', onMove);
                     document.removeEventListener('pointerup', onUp);
                     document.body.style.cursor = '';
@@ -242,7 +241,38 @@
 
         // Set header
         document.getElementById('db-col-menu-icon').innerHTML = propTypeSvg(propType);
-        document.getElementById('db-col-menu-name').textContent = propName;
+        const nameEl = document.getElementById('db-col-menu-name');
+        nameEl.textContent = propName;
+        nameEl.contentEditable = 'false';
+        nameEl.style.cursor = 'text';
+        nameEl.style.border = 'none';
+        nameEl.style.outline = 'none';
+        nameEl.style.padding = '0';
+        nameEl.style.background = 'transparent';
+        nameEl.title = 'Click to rename';
+        // Click on name to edit
+        nameEl.onclick = function(e) {
+            e.stopPropagation();
+            if (nameEl.contentEditable === 'true') return;
+            nameEl.contentEditable = 'true';
+            nameEl.style.border = '1px solid var(--accent, #2383E2)';
+            nameEl.style.borderRadius = '3px';
+            nameEl.style.padding = '2px 4px';
+            nameEl.style.outline = 'none';
+            nameEl.focus();
+            // Select all text
+            const range = document.createRange();
+            range.selectNodeContents(nameEl);
+            const sel = window.getSelection();
+            sel.removeAllRanges();
+            sel.addRange(range);
+        };
+        // Blur/Enter → save rename
+        nameEl.onblur = function() { commitColRename(propId); };
+        nameEl.onkeydown = function(e) {
+            if (e.key === 'Enter') { e.preventDefault(); commitColRename(propId); }
+            else if (e.key === 'Escape') { cancelColRename(propId, propName); }
+        };
         document.getElementById('db-col-menu-info').textContent = 'ⓘ';
 
         // Position near the anchor
@@ -268,13 +298,55 @@
         const menu = document.getElementById('db-col-menu');
         if (menu) {
             menu.style.display = 'none';
-            // Hide all submenus
             menu.querySelectorAll('.db-col-menu-sub').forEach(s => s.style.display = 'none');
         }
         state.colMenuPropId = null;
         state.colMenuSubOpen = null;
     }
 
+    async function commitColRename(propId) {
+        const nameEl = document.getElementById('db-col-menu-name');
+        if (!nameEl) return;
+        const newName = nameEl.textContent.trim();
+        if (!newName) return;
+        nameEl.contentEditable = 'false';
+        nameEl.style.border = 'none';
+        nameEl.style.borderRadius = '0';
+        nameEl.style.padding = '0';
+
+        const prop = state.properties.find(p => p.id === propId);
+        if (!prop || prop.name === newName) return;
+
+        // Update local state
+        prop.name = newName;
+        // Update header in table
+        renderTable();
+        // If menu still open, update its display
+        if (state.colMenuPropId === propId) {
+            nameEl.textContent = newName;
+        }
+
+        // Persist to server
+        const csrf = document.cookie.match(/csrf_token=([^;]+)/);
+        try {
+            await fetch('/db/properties/' + propId + '/api', {
+                method: 'PUT',
+                headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': csrf ? csrf[1] : '' },
+                body: JSON.stringify({ name: newName })
+            });
+        } catch(e) { console.error('[DB] rename property error:', e); }
+    }
+
+    function cancelColRename(propId, originalName) {
+        const nameEl = document.getElementById('db-col-menu-name');
+        if (!nameEl) return;
+        nameEl.contentEditable = 'false';
+        nameEl.textContent = originalName;
+        nameEl.style.border = 'none';
+        nameEl.style.borderRadius = '0';
+        nameEl.style.padding = '0';
+    }
+
     function toggleColSubmenu(subId) {
         const sub = document.getElementById(subId);
         if (!sub) return;