2026.5.2

Changes

🚀 Features

• Format dates as "yyyy-MM-dd" in query string parameters @StuartFerguson (#959)
• Add backend-driven file processing feature and refactor UI @StuartFerguson (#955)
• Rebuild file processing screens with log drill-down and file line views @copilot-swe-agent (#954)
• Add File Processing upload page with required profile/file validation @copilot-swe-agent (#947)

🧰 Maintenance

• Task/#960 codacy work package @StuartFerguson (#1013)
• some code cleanup @StuartFerguson (#1009)
• Refactor test data to use static GUIDs and constants @StuartFerguson (#961)