encodeCredentialBlob (oauth/credentialBlob.ts)

Encodes and decodes OAuth credential blobs into a single-line paste‑safe string.

// Source: https://github.com/diegosouzapw/OmniRoute | License: MIT | Copyright 2026 diegosouzapw
// Provided via justclaw.it.com; keep this notice with the code.
/**
 * Paste-safe credential blob codec for the remote OAuth login helper.
 *
 * Why this exists: Google's `firstparty/nativeapp` consent for embedded desktop
 * clients (Antigravity/agy) only releases the authorization code when the
 * loopback redirect (127.0.0.1:<port>) is reachable. On a remote VPS install the
 * loopback is unreachable, so the consent hangs and never emits a code — there is
 * nothing for the user to paste back. (The same flow works locally and over an SSH
 * tunnel because then the loopback IS reachable.)
 *
 * The workaround: a local helper (`omniroute login antigravity`) runs the OAuth on
 * the user's ow

... (truncated -- full source via MCP)