Release Apple Ads plugin 0.2.1

[KQLYYY]

Summary

• release Apple Ads plugin 0.2.1
• make Cowork preflight quiet and keep network failures out of install/login routing
• use net revenue metrics in agent workflows
• offer cost per paid, cost per trial, then net ROAS in weekly review flows
• apply cohort-day semantics only to revenue, ROAS, ARPU, ARPPU, ARPAS, and ROI
• remove empty playbooks, empty verticals, and their dead routes
• sync generated agent references from Adapty CLI 0.5.0
• add cross-platform workflow and preflight regression guards

Verification

• playbook, workflow, i18n, and Cyrillic guards
• quiet Cowork preflight fixtures
• plugin manifest validation
• generated-doc sync idempotency
• installable plugin bundle: apple-ads@0.2.1, 51 entries