docs(readme): add sharing model and multi-team architecture

feat(skillforge): add anonymous usage analytics

docs(readme): add multi-admin setup and privacy sections

docs(readme): add extension sharing and installation guide

build(skillforge): change build output directory to dist

fix(skillforge): restrict host_permissions to r2.dev only

feat(skillforge): add footer and improve fetch caching

feat(skillforge): show skill names in pending alerts

feat(skillforge): add skill deletion and upload sync

fix(skillforge): use upload-skill endpoint for complex .skill files

feat(skillforge): add GitHub skill installation CLI

feat(skillforge): add skill versioning and individual update support

feat: initial skillforge chrome extension setup

Initial commit