v1.15.11

Changelog

• 7149cc1 chore: add gentle-engram package gallery logo
• 3253210 chore: update go toolchain to 1.25.10
• f74d564 docs(pi): improve gentle-engram package marketing
• 42160c7 docs(readme): highlight Pi package
• 3702165 feat(plugin): add Pi Engram package
• 1fac309 fix(plugin): align Pi package peer dependency
• e433cfb fix(plugin): align Pi project detection
• d96555f fix(plugin): rename Pi package to gentle-engram