ticket: site metadata header + scannable Albanian ticket; widen barcode

- site_config gains optional park identity (park_name, operator_name, nius,
  address, phone, email); additive Drizzle migration 0001. GET/PUT
  /api/site-config read/write the full config (PUT partial patch, admin only);
  SiteSettings + SetupWizard expose the fields.
- renderTicket() prints an Albanian header sourced from site_config, the
  all-numeric 13-digit ticket id (12 random + Luhn) as Code128, large digits,
  and a lost-ticket footer. CP852 codepage so ë/ç render.
- Widen the Code128 module width 2->3 and height 80->100 dots so the
  short-range "Simple" QR/barcode reader decodes reliably (was barely reading
  at module width 2 on the 80mm head).

See wiki/concepts/site-metadata.md and ticket-encoding.md.

apps/server/src/routes/site.ts

@@ -7,9 +7,36 @@ import { getOccupancy } from "../occupancy.js";
 // ledger; capacity is an admin-set knob. The FULL gate (refuse transient entry at
 // capacity) lives in the entry flow. See wiki/concepts/capacity-occupancy.md.
 
-interface SiteConfigBody {
+// Optional park-metadata text fields (all nullable). Trimmed; "" → null.
+const TEXT_FIELDS = [
+  "parkName",
+  "operatorName",
+  "nius",
+  "address",
+  "phone",
+  "email",
+] as const;
+type TextField = (typeof TEXT_FIELDS)[number];
+
+interface SiteConfigBody extends Partial<Record<TextField, string | null>> {
   /** Nominal capacity; null = no limit. */
-  capacity: number | null;
+  capacity?: number | null;
+}
+
+/** Shape returned by GET/PUT: capacity + every metadata field (null when unset). */
+type SiteConfig = { capacity: number | null } & Record<TextField, string | null>;
+
+function toSiteConfig(row: typeof siteConfig.$inferSelect | undefined): SiteConfig {
+  const out = { capacity: row?.capacity ?? null } as SiteConfig;
+  for (const f of TEXT_FIELDS) out[f] = row?.[f] ?? null;
+  return out;
+}
+
+/** Trim a text field; empty string becomes null so blank input clears it. */
+function normText(v: unknown): string | null {
+  if (v == null) return null;
+  const s = String(v).trim();
+  return s === "" ? null : s;
 }
 
 export async function siteRoutes(app: FastifyInstance, db: Db): Promise<void> {
@@ -19,25 +46,37 @@ export async function siteRoutes(app: FastifyInstance, db: Db): Promise<void> {
   // Live occupancy: cars inside, capacity, free, full. Any signed-in role.
   app.get("/api/occupancy", { preHandler: readGuard }, async () => getOccupancy(db));
 
-  // Read site config (capacity).
+  // Read site config (capacity + park metadata).
   app.get("/api/site-config", { preHandler: readGuard }, async () => {
     const row = db.select().from(siteConfig).where(eq(siteConfig.id, 1)).get();
-    return { capacity: row?.capacity ?? null };
+    return toSiteConfig(row);
   });
 
-  // Set capacity (admin). null or 0+ integer.
+  // Set site config (admin). Capacity: null or 0+ integer. Metadata: optional text
+  // (only the fields PRESENT in the body are updated; absent fields are untouched).
   app.put<{ Body: SiteConfigBody }>("/api/site-config", { preHandler: writeGuard }, async (req, reply) => {
-    const { capacity } = req.body ?? ({} as SiteConfigBody);
-    if (capacity != null && (!Number.isInteger(capacity) || capacity < 0)) {
-      return reply.code(400).send({ error: "capacity must be a non-negative integer or null" });
+    const body = req.body ?? ({} as SiteConfigBody);
+
+    const patch: Partial<typeof siteConfig.$inferInsert> = {};
+    if ("capacity" in body) {
+      const c = body.capacity;
+      if (c != null && (!Number.isInteger(c) || c < 0)) {
+        return reply.code(400).send({ error: "capacity must be a non-negative integer or null" });
+      }
+      patch.capacity = c ?? null;
     }
+    for (const f of TEXT_FIELDS) {
+      if (f in body) patch[f] = normText(body[f]);
+    }
+
     const existing = db.select().from(siteConfig).where(eq(siteConfig.id, 1)).get();
     const updatedAt = new Date().toISOString();
     if (existing) {
-      db.update(siteConfig).set({ capacity: capacity ?? null, updatedAt }).where(eq(siteConfig.id, 1)).run();
+      db.update(siteConfig).set({ ...patch, updatedAt }).where(eq(siteConfig.id, 1)).run();
     } else {
-      db.insert(siteConfig).values({ id: 1, capacity: capacity ?? null, updatedAt }).run();
+      db.insert(siteConfig).values({ id: 1, ...patch, updatedAt }).run();
     }
-    return { capacity: capacity ?? null };
+    const row = db.select().from(siteConfig).where(eq(siteConfig.id, 1)).get();
+    return toSiteConfig(row);
   });
 }