Address review feedback: only fall back to token-based ID extraction
on transport/timeout errors (catch block), not on HTTP auth failures
(401/403) which should fail fast to surface credential issues early.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
When the Discord API call to /oauth2/applications/@me fails (timeout,
network error), the bot fails to start with "Failed to resolve Discord
application id". Add a fallback that extracts the application ID by
base64-decoding the first segment of the bot token, keeping it as a
string to avoid precision loss for snowflake IDs exceeding
Number.MAX_SAFE_INTEGER (2^53 - 1).
Fixes#29608
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
