feat: implement donation form with payment processing

Add main donate page with TMN and PromptPay flows, donation schema
with retry system, SSE integration, heartbeat endpoint, and
file-to-data-url utility. Remove unused donate client component.

lib/db/schema.ts

@@ -88,12 +88,12 @@ export const submissions = artifact.table("submissions", {
   name: text().notNull(),
   comment: text().notNull(),
   char: text()
-    .notNull()
+    // .notNull() // For Special Queue
     .references(() => characters.name, {
       onDelete: "cascade",
       onUpdate: "cascade",
     }),
-  queue: serial(),
+  queue: serial(), // NULL for Spacial Queue
   editToken: text().notNull().$defaultFn(uuidv7),
   edits: integer().notNull().default(0),
   checked: boolean().notNull().default(false),
@@ -348,9 +348,14 @@ export const schDonate = pgSchema("donate");
 export const donations = schDonate.table("donations", {
   id: text().primaryKey().$defaultFn(uuidv7),
   name: text().notNull(),
-  amount: numeric().notNull(),
+  amount: numeric({ mode: "number", precision: 7, scale: 2 }).notNull(),
   image: bytea(),
   message: text(),
+  created: timestamp("created_at").defaultNow().notNull(),
+  // The retry system
+  lastPing: timestamp("last_ping").default(new Date("01-01-2000")).notNull(),
+  sent: boolean().default(false).notNull(),
+  uid: text(),
 });
 
 //#endregion

lib/db/sse-endpoints.ts

@@ -33,9 +33,10 @@ export const sse = sseEndpointMap({
   },
   donate: {
     ping: z.object({
+      id: z.string(),
       name: z.string(),
       amount: z.number(),
-      image: z.string(),
+      image: z.string().optional(),
       message: z.string(),
     }),
     // roundtrip SSE system check

lib/utils.ts

@@ -47,6 +47,11 @@ export function shortestPrefixes(values: readonly string[]) {
   return res;
 }
 
+export async function fileToDataUrl(file: File) {
+  const buffer = Buffer.from(await file.arrayBuffer());
+  return `data:${file.type};base64,${buffer.toString("base64")}`;
+}
+
 export function parseSearchNumber(
   param: string | string[] | undefined,
   def: number = 0,