plan files

docs/plans/phase4-step1-renovate-preset.md

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+# Implementation Plan: Renovate Bot Preset
+
+## Objective
+Create a centralized `renovate.json` (or `default.json`) preset in this repository that other projects can easily inherit to get standardized auto-merge and grouping behavior.
+
+## Requirements
+- Create a file at `renovate-preset/default.json` (or similar path).
+- Configure auto-merge for patch and minor versions of dependencies.
+- Enable grouping for monorepo packages (e.g., all `@babel/*` updates grouped into one PR).
+- Configure the schedule (e.g., run on weekends or early mornings).
+- Configure the severity levels for when notifications/PRs should block.
+- Document how other repositories can `extend` this preset in their own `renovate.json` (e.g., `"extends": ["github>my-org/my-repo//renovate-preset"]`).
+
+## Agent Instructions
+1. Create the base Renovate configuration file.
+2. Add a `README.md` to the `renovate-preset` directory explaining how to use it.