v3: allow users to edit dump thumbnail, fixed some linter errors in the frontend

api/db/migrate.ts

@@ -1,5 +1,6 @@
 import type { DatabaseSync } from "node:sqlite";
 import { up as up0001CommentLikes } from "./migrations/0001_comment_likes.ts";
+import { up as up0002DumpThumbnail } from "./migrations/0002_dump_thumbnail.ts";
 
 interface Migration {
   name: string;
@@ -11,6 +12,7 @@ interface Migration {
 // straight from schema.sql, where the change it makes already exists.
 const MIGRATIONS: Migration[] = [
   { name: "0001_comment_likes", up: up0001CommentLikes },
+  { name: "0002_dump_thumbnail", up: up0002DumpThumbnail },
 ];
 
 export function runMigrations(db: DatabaseSync): void {

api/db/migrations/0002_dump_thumbnail.ts

@@ -0,0 +1,14 @@
+import type { DatabaseSync } from "node:sqlite";
+
+// Idempotent: safe to run against a fresh db (already created from schema.sql
+// with this column) or an existing one that predates it.
+export function up(db: DatabaseSync): void {
+  const dumpCols = db.prepare(`PRAGMA table_info(dumps);`).all() as {
+    name: string;
+  }[];
+  if (!dumpCols.some((c) => c.name === "custom_thumbnail_mime")) {
+    db.exec(
+      `ALTER TABLE dumps ADD COLUMN custom_thumbnail_mime TEXT;`,
+    );
+  }
+}

api/db/schema.sql

@@ -14,6 +14,7 @@ CREATE TABLE dumps (
   file_size   INTEGER,
   vote_count  INTEGER NOT NULL DEFAULT 0,
   is_private  INTEGER NOT NULL DEFAULT 0,
+  custom_thumbnail_mime TEXT,
   FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
 );