* fix: remove leading space from license public_key.pem
PEM must begin with -----BEGIN; a leading ASCII space breaks
cryptography.load_pem_public_key on older cryptography (e.g. 41.x),
causing OpenSSL no start line / deserialize errors.
Made-with: Cursor
* test: assert license public_key.pem loads as valid PEM
Regression guard for leading whitespace before -----BEGIN, which breaks
load_pem_public_key on older cryptography (e.g. 41.x).
Made-with: Cursor