fix(projects): red links in the projects table (number + order columns)

The project-number column was plain text and the Objednávka link was colored text.secondary (grey/black). Make the number a RouterLink to /projects/:id and recolor the order link to primary.main, so both match the red table-link convention used on Offers/Orders/Invoices.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/admin/pages/Projects.tsx

@@ -246,7 +246,19 @@ export default function Projects() {
       width: "12%",
       sortKey: "project_number",
       mono: true,
-      render: (p) => p.project_number,
+      render: (p) => (
+        <Box
+          component={RouterLink}
+          to={`/projects/${p.id}`}
+          sx={{
+            color: "primary.main",
+            textDecoration: "none",
+            "&:hover": { textDecoration: "underline" },
+          }}
+        >
+          {p.project_number}
+        </Box>
+      ),
     },
     {
       key: "name",
@@ -290,7 +302,7 @@ export default function Projects() {
             component={RouterLink}
             to={`/orders/${p.order_id}`}
             sx={{
-              color: "text.secondary",
+              color: "primary.main",
               textDecoration: "none",
               "&:hover": { textDecoration: "underline" },
             }}