wip: ai driven merge in next

.github/prompts/next-merge.md

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+You will be creating a merge commit message for merging the master branch into the next branch. This is an important task that requires careful analysis of the git history and project structure to ensure a proper merge.
+
+Use this project structure to determine the purpose of every package and subdirectory:
+```
+▸ examples/                            << Examples, grouped per flavor
+▸ packages/                            << Packages of the project
+  ▸ algiliasearch-helper/                << General utils and classes for the Algolia API
+  ▸ instantsearch-ui-components/         << Shared UI components library across all flavors
+  ▸ react-instantsearch/                 << Bundled React InstantSearch library
+  ▸ react-instantsearch-core/            << Runtime-independent React InstantSearch version
+  ▸ instantsearch.js/                    << The InstantSearch.js library
+  ▸ vue-instantsearch/                   << Bundled Vue InstantSearch library
+▸ tests/                               << The test utilites
+  ▸ mocks/                             << Fake versions of the API, for testing
+  ▸ utils/                             << Global utilities for the tests
+▸ website/                             << The generated website
+▸ scripts/                             << The scripts for maintaining the project
+```
+
+Use git commands to get the history of the `master` and `next` branches.
+
+Your task is to analyze these git histories and create an appropriate merge commit message for merging master into next.
+
+Important guidelines:
+- Identify what changes have been made in master since the last merge to next
+- Identify what changes have been made in next that aren't in master
+- Look for potential conflicts between the branches based on which files/packages were modified
+- Keep your analysis focused and concise to avoid excessive token usage
+- If the git histories are very long, focus on the most recent and significant commits
+
+After completing the merge and resolving conflicts, include a short summary at the end of the pull request description to help reviewers quickly understand the impact of the merge.
+
+- Provide a concise overview of the major changes introduced by merging master into next, focusing on high-level behavior, public APIs, or notable refactors rather than listing every commit.
+- When relevant, group changes by affected area or package (for example: InstantSearch.js core behavior, React InstantSearch APIs, Vue InstantSearch integrations).
+- Clearly distinguish which major changes originated from master and which significant changes already existed on next, keeping this at a summary or example level only.
+- If conflicts were resolved, briefly mention the most important ones, including which side was favored and why (for example, keeping next behavior to preserve upcoming release work, or adopting a master fix to align with current production behavior).
+- Call out any potentially risky or user-visible changes that reviewers should pay extra attention to, without going into implementation details.
+
+Keep the summary short, scannable, and focused on what matters for review and release context rather than exhaustive technical detail.