Pickaxe Embed SSO WordPress Plugin v0.2.0

Adds a fast setup generator for pilot installs.\n\nChanges:\n- Adds Generate WordPress SSO Config button in Settings > Pickaxe Embed SSO\n- Generates a local ES256 key pair in WordPress\n- Auto-fills issuer, audience, key ID, private key, embed service origin, script URL, auth provider, and TTL\n- Adds Default deployment ID setting so pages can use [pickaxe_embed]\n- Shows a copy-ready Pickaxe-side SSO config block with the derived public key\n\nThis is still a prerelease. Install by downloading pickaxe-embed-sso.zip and uploading it in WordPress Admin > Plugins > Add New > Upload Plugin.