feat(demo): start sandbox from landing

src/locales/en.ts

@@ -396,7 +396,7 @@ export const en = {
     collapse: 'Collapse',
   },
 
-  landing: {
+  landing: {
     brandLabel: "Operating system for time",
     eyebrow: "Built for high-discipline teams that need clean time intelligence",
     nav: {
@@ -484,7 +484,16 @@ export const en = {
     finalCtaTitle: "If your team sells expertise or ships client work, your time system should look this serious.",
     finalCtaDescription:
       "Open the app, create a workspace, and see how fast your reporting discipline improves when the product stops leaking context.",
-  },
+  },
+  demo: {
+    badge: "Demo environment",
+    starting: "Preparing demo...",
+    started: "Demo environment is ready.",
+    startError: "Could not start the demo environment.",
+    expiresAt: "Expires at",
+    resetAction: "Reset demo",
+    reset: "Fresh demo environment is ready.",
+  },
 
   ordering: {
     createdAtDesc: "Newest First",