[api] audit fixes: account tests, dependencies and security hardening (#54)

* test(accounts): cover three username changes

* chore(deps): update vulnerable runtime dependencies

* fix(security): bound uploads and validate token subjects strictly

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Co-authored-by: Nexi (CWN) <communityshieldofficial@gmail.com>

apps/storage/src/context.ts

@@ -2,6 +2,8 @@ import type { HonoApp } from '@repo/hono-helpers'
 import type { SharedHonoEnv, SharedHonoVariables } from '@repo/hono-helpers/src/types'
 
 export type Env = SharedHonoEnv & {
+	/** Maximum accepted binary upload size in bytes. */
+	MAX_UPLOAD_BYTES?: string | number
 	// Shared Secrets Store binding for the HS256 JWT signing key. Resolve the value
 	// with `await env.JWT_SECRET.get()`; all workers bind the same store so tokens
 	// signed by `auth` verify here.