Add guest/account auth flows, order tracking, and order history UI

- Wire up Better Auth (email/password + Google/Apple SSO) with a
  sign-in/sign-up UI, header account menu, and a basket that follows
  the signed-in-or-guest state.
- Give the order status page a vertical timeline per preparation step
  (with a distinct customer-facing name separate from the machine tag,
  a done/in-progress/queued/pending look, and a sonar-ping highlight on
  the active step), a formatted ETA (relative under 3h, absolute clock
  time beyond that), and Buy again / Get help / Cancel actions.
- Expand Pizza's recipe into 6 steps across a shared prep station and
  the existing oven/assembly stations, with matching schema, seed, and
  domain changes plus updated/added test coverage.
- Add an Orders list (account orders via session, guest orders via a
  locally remembered access-token list) with a shared getOrdersForCustomer
  domain summary, and remember a guest's name/contact after their first
  order so checkout doesn't ask again.
- Improve page transitions with the View Transitions API: a shared
  element morph between an order card and its detail page, a stable
  (non-jumping) header across navigations, and reduced-motion handling.
- Add a Ghost Kitchen wordmark (Space Grotesk, faded "Ghost", ghost
  icon standing in for the "o") and shrink the basket icon to match
  the rest of the header controls.
- Add a run-ghost-kitchen agent skill documenting local setup, the
  dev-server driver, and the gotchas hit along the way.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/db/seed.ts

@@ -11,6 +11,10 @@ export const seedGhostKitchen = async (db: NodePgDatabase<typeof schema>) => {
     .values({ name: 'Ghost Kitchen' })
     .returning()
 
+  const [prepTag] = await db
+    .insert(schema.machineTags)
+    .values({ name: 'prep' })
+    .returning()
   const [ovenTag] = await db
     .insert(schema.machineTags)
     .values({ name: 'oven' })
@@ -24,6 +28,10 @@ export const seedGhostKitchen = async (db: NodePgDatabase<typeof schema>) => {
     .values({ name: 'assembly' })
     .returning()
 
+  const [prep1] = await db
+    .insert(schema.machines)
+    .values({ name: 'Prep Station 1', machineTagId: prepTag.id })
+    .returning()
   const [oven1] = await db
     .insert(schema.machines)
     .values({ name: 'Oven 1', machineTagId: ovenTag.id })
@@ -47,12 +55,50 @@ export const seedGhostKitchen = async (db: NodePgDatabase<typeof schema>) => {
     })
     .returning()
 
-  await db.insert(schema.menuItemSteps).values({
-    menuItemId: pizza.id,
-    sequence: 1,
-    machineTagId: ovenTag.id,
-    estimatedDurationSeconds: 600,
-  })
+  await db.insert(schema.menuItemSteps).values([
+    {
+      menuItemId: pizza.id,
+      sequence: 1,
+      name: 'Flattening dough',
+      machineTagId: prepTag.id,
+      estimatedDurationSeconds: 30,
+    },
+    {
+      menuItemId: pizza.id,
+      sequence: 2,
+      name: 'Spreading sauce',
+      machineTagId: prepTag.id,
+      estimatedDurationSeconds: 20,
+    },
+    {
+      menuItemId: pizza.id,
+      sequence: 3,
+      name: 'Adding toppings',
+      machineTagId: prepTag.id,
+      estimatedDurationSeconds: 30,
+    },
+    {
+      menuItemId: pizza.id,
+      sequence: 4,
+      name: 'Baking in the oven',
+      machineTagId: ovenTag.id,
+      estimatedDurationSeconds: 600,
+    },
+    {
+      menuItemId: pizza.id,
+      sequence: 5,
+      name: 'Slicing',
+      machineTagId: assemblyTag.id,
+      estimatedDurationSeconds: 20,
+    },
+    {
+      menuItemId: pizza.id,
+      sequence: 6,
+      name: 'Packaging',
+      machineTagId: assemblyTag.id,
+      estimatedDurationSeconds: 20,
+    },
+  ])
 
   const [burger] = await db
     .insert(schema.menuItems)
@@ -68,12 +114,14 @@ export const seedGhostKitchen = async (db: NodePgDatabase<typeof schema>) => {
     {
       menuItemId: burger.id,
       sequence: 1,
+      name: 'Grilling patty',
       machineTagId: grillTag.id,
       estimatedDurationSeconds: 240,
     },
     {
       menuItemId: burger.id,
       sequence: 2,
+      name: 'Assembling burger',
       machineTagId: assemblyTag.id,
       estimatedDurationSeconds: 90,
     },
@@ -81,8 +129,13 @@ export const seedGhostKitchen = async (db: NodePgDatabase<typeof schema>) => {
 
   return {
     brand,
-    machineTags: { oven: ovenTag, grill: grillTag, assembly: assemblyTag },
-    machines: { oven1, grill1, assembly1 },
+    machineTags: {
+      prep: prepTag,
+      oven: ovenTag,
+      grill: grillTag,
+      assembly: assemblyTag,
+    },
+    machines: { prep1, oven1, grill1, assembly1 },
     menuItems: { pizza, burger },
   }
 }