hardening(anchor): remove default Ergo API key and wallet password

Co-authored-by: liu971227-sys <248239659+liu971227-sys@users.noreply.github.com>

Add Windows miner build and packaging scripts

Add BoTTube badge to README — persists in bounty hunter forks

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Add GitHub Sponsors FUNDING.yml

Signed-off-by: Scott <scott@elyanlabs.ai>

RustChain v2.4.0 - Hardware Binding + Fingerprint Attestation