v0.6.15

What's Changed

• chore(sponsors): remove Proxy-Seller by @0xMassi in #78
• docs(readme): switch Star History chart to shieldcn by @0xMassi in #82
• fix(cli): hide secret env values in --help output by @0xMassi in #83
• docs: scrub public SKILL.md of competitor/vendor wording and over-claims by @0xMassi in #84
• docs(readme): add "Use as an agent skill" section by @0xMassi in #85

Full Changelog: v0.6.14...v0.6.15