fix: add credentials to fetch calls for authenticated API requests

Fix "Failed to load on projects" error by including credentials in all
fetch calls to /api/* endpoints. The session cookie must be sent with
requests for requireAuth middleware to authenticate users.

Changes:
- projects.js: Add credentials: 'include' to all 6 API fetch calls
  (loadProjects, saveProject, deleteProject, loadDeletedProjects,
   restoreProject, permanentDeleteProject)
- sessions-landing.js: Add credentials to 3 API fetch calls
  (loadSessionsAndProjects, moveSessionToProject, context menu
   suggestions)

Resolves issue where projects page showed "Failed to load projects"
error on https://www.rommark.dev/claude

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

public/claude-ide/sessions-landing.js

@@ -114,8 +114,8 @@ async function loadSessionsAndProjects() {
     try {
         // Fetch both sessions and projects in parallel
         const [sessionsRes, projectsRes] = await Promise.all([
-            fetch('/claude/api/claude/sessions'),
-            fetch('/api/projects')
+            fetch('/claude/api/claude/sessions', { credentials: 'include' }),
+            fetch('/api/projects', { credentials: 'include' })
         ]);
 
         if (!sessionsRes.ok) throw new Error('Failed to load sessions');
@@ -811,7 +811,9 @@ async function showSessionContextMenu(event, sessionId) {
     // Fetch project suggestions
     let suggestions = [];
     try {
-        const res = await fetch(`/api/projects/suggestions?sessionId=${sessionId}`);
+        const res = await fetch(`/api/projects/suggestions?sessionId=${sessionId}`, {
+            credentials: 'include'
+        });
         if (res.ok) {
             const data = await res.json();
             suggestions = data.suggestions || [];
@@ -940,6 +942,7 @@ async function moveSessionToProject(sessionId, projectId) {
         const res = await fetch(`/api/projects/sessions/${sessionId}/move`, {
             method: 'POST',
             headers: { 'Content-Type': 'application/json' },
+            credentials: 'include',
             body: JSON.stringify({ projectId })
         });