Factory v0.1.15

Factory deliverables now default to English. Issues, PRs and Factory documentation use another language only when the user explicitly requests it; the language of brainstorming does not select the deliverable language.

Delivered through PR #40, with independent exact-candidate source acceptance, passing required PR/main checks, the package check, 11 unit tests and bundle staging. The authored issue corrections are bounded examples, not a claim of future autonomous compliance.

This is a method-only source release. Native runtime, permissions and isolation qualifications are unchanged. Review the skill diff before adopting; retain the previous installed copy for recovery.