fix(config): stabilize migrations and profile startup

[marynes0111]

Objective

Resolve migration and profile-related failures detected during local execution and CI.

Scope

• Review Flyway migrations
• Validate startup using all supported profiles
• Validate Docker execution
• Validate CI execution environment

Acceptance Criteria

• Application starts successfully with supported profiles
• Flyway migrations execute successfully
• Docker startup succeeds
• CI startup succeeds
• No migration-related failures remain open