fix: revert leftover Project→Client mislabels, drop tracked .env.backfill

Rename in 91045a1 was only partially reverted by later commits, leaving
~20 UI spots calling the project entity "Client" while table headers
already said "Project". Reverted all of them plus the /clients/:id
route (now /projects/:id canonical again, nothing was live yet).

Also: stop tracking .env.backfill (had a live admin password/token
committed - rotate those credentials), remove stale pre-redesign
layout.md superseded by REDESIGN-LAYOUT2.md.

src/pages/team/TeamReports.jsx

@@ -278,7 +278,7 @@ export default function TeamReports() {
 
       autoTable(doc, {
         startY: 78,
-        head: [['Company', 'Client', 'Task', 'Version', 'Type', 'Version Status', 'Client Billing', 'Sub Billing']],
+        head: [['Company', 'Project', 'Task', 'Version', 'Type', 'Version Status', 'Client Billing', 'Sub Billing']],
         body: sortedRows.map((row) => [
           row.company_name,
           row.project_name,
@@ -329,9 +329,9 @@ export default function TeamReports() {
           </select>
         </div>
         <div>
-          <div style={{ fontSize: 11, fontWeight: 500, color: 'var(--text-secondary)', letterSpacing: 0.8, textTransform: 'uppercase', marginBottom: 4 }}>Client</div>
+          <div style={{ fontSize: 11, fontWeight: 500, color: 'var(--text-secondary)', letterSpacing: 0.8, textTransform: 'uppercase', marginBottom: 4 }}>Project</div>
           <select value={projectFilter} onChange={(event) => setProjectFilter(event.target.value)}>
-            <option value="all">All Clients</option>
+            <option value="all">All Projects</option>
             {filteredProjects.map((project) => (
               <option key={project.id} value={project.id}>{project.name}</option>
             ))}
@@ -385,7 +385,7 @@ export default function TeamReports() {
             <thead>
               <tr>
                 <SortTh col="company_name" sortKey={sortKey} sortDir={sortDir} onSort={toggle}>Company</SortTh>
-                <SortTh col="project_name" sortKey={sortKey} sortDir={sortDir} onSort={toggle}>Client</SortTh>
+                <SortTh col="project_name" sortKey={sortKey} sortDir={sortDir} onSort={toggle}>Project</SortTh>
                 <SortTh col="task_title" sortKey={sortKey} sortDir={sortDir} onSort={toggle}>Task Name</SortTh>
                 <SortTh col="version_number" sortKey={sortKey} sortDir={sortDir} onSort={toggle}>R#</SortTh>
                 <SortTh col="version_type" sortKey={sortKey} sortDir={sortDir} onSort={toggle}>Type</SortTh>