sensortowerR 2.0.0

• Breaking redesign around eager, data-first tibble pipelines with explicit IDs.
• One metrics function handles sales and DAU/WAU/MAU, retaining native windows.
• Unified sales use the provider’s unified endpoint for single and batch calls.
• Missing observations remain missing; failures abort or produce explicit partial statuses.
• Rankings honor measure; store chart positions have a separate function.
• Metadata conversion retains all regional store mappings and input identity.
• Filter construction is local. Creation returns only server-confirmed IDs.
• One httr2 request layer supplies timeouts, bounded read retries and safe errors.
• Cache defaults off, expires and is scoped to credentials.
• Specialist wrappers share data-first conventions; reporting moves to recipes.
• See MIGRATION.md and the audit directory for compatibility and verification.