## Instructions for the AI agent: brief change summary

Goal: produce a short, clear summary of the current branch changes relative to `master`.

### What to do
- Compare the current branch with the base and extract the key changes without going into code details.
- Group changes by meaning: features, fixes, configuration/infra, dependencies, tests/documentation.
- Note potentially breaking changes and migrations.
- If the service context is unclear, note assumptions and ask questions.

### Output format
1) Briefly describe the essence of the changes (1-3 sentences).
2) Main changes (bullets).
3) Breaking changes / migrations (if any).
4) Risks/notes (if any).
5) Questions and assumptions.