Fix all ESLint errors: remove unused imports, replace any types

- Remove ~60 unused imports and variables across 88 files
- Replace ~80 `any` type annotations with proper types (unknown,
  Record<string, unknown>, or specific types)
- Prefix unused callback args with underscore
- Fix unescaped JSX entities
- Lint now passes cleanly (0 errors, 2 intentional img warnings)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/lib/db/utils.ts

@@ -16,7 +16,7 @@ import { db } from './index';
 export async function withTransaction<T>(
   callback: (tx: typeof db) => Promise<T>,
 ): Promise<T> {
-  return db.transaction(callback as any) as Promise<T>;
+  return db.transaction(callback as unknown as Parameters<typeof db.transaction>[0]) as Promise<T>;
 }
 
 /**
@@ -33,7 +33,7 @@ export async function softDelete<TTable extends PgTable>(
 ): Promise<void> {
   await db
     .update(table)
-    .set({ archived_at: sql`now()` } as any)
+    .set({ archived_at: sql`now()` } as Record<string, unknown>)
     .where(eq(idColumn, id));
 }
 
@@ -51,6 +51,6 @@ export async function restore<TTable extends PgTable>(
 ): Promise<void> {
   await db
     .update(table)
-    .set({ archived_at: null } as any)
+    .set({ archived_at: null } as Record<string, unknown>)
     .where(eq(idColumn, id));
 }