docs(news): add v2.6.1 release notes

Author: d-biehl

docs/news/2026-06-15-whats-new-v2.6.1.md

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+---
+title: What's New in v2.6.1
+date: 2026-06-15
+---
+
+# What's New in RobotCode v2.6.1
+
+A small patch release on top of [v2.6.0](./2026-06-09-whats-new-v2.6.0.md) with four bug fixes from your reports — thanks for filing them.
+
+## Bug Fixes
+
+- **Automatic recovery from a corrupt cache database.** When the workspace cache became corrupt (`database disk image is malformed`), the keyword view, test discovery, and even **Clear Cache and Restart Language Servers** stopped working. **RobotCode** now detects the corruption and rebuilds the cache automatically — or falls back to an in-memory cache if the file is still locked by another window. ([#614](https://github.com/robotcodedev/robotcode/issues/614))
+- **Stale configuration profiles no longer block test runs.** If a selected profile was removed from `robot.toml` — for example after switching git branches — every test run failed with a *profile not found* error. **Select Configuration Profiles** now drops profiles that no longer exist and lists which ones were removed. ([#498](https://github.com/robotcodedev/robotcode/issues/498))
+- **Stable Robocop formatting.** Formatting a file with Robocop repeatedly no longer flips between two results — for example a blank line being added and removed before a section header on every other run. ([#612](https://github.com/robotcodedev/robotcode/issues/612))
+- **`pip install robotcode[all]` works on more platforms.** On targets without a prebuilt `html-to-markdown` wheel (such as armv7l or Alpine/musllinux), the install used to fail during a source build. `html-to-markdown` is now opt-in instead of part of `all` — install it with `pip install robotcode-runner[html]` for nicer HTML log conversion in the `results` command. ([#613](https://github.com/robotcodedev/robotcode/issues/613))
+
+There is also a new reference page on [excluding files with `.robotignore`](../03_reference/ignoring-files.md).
+
+---
+
+## Thank You
+
+Thanks to everyone who reported issues, contributed ideas, and tested pre-release builds. Your feedback drives every release.
+
+For the full list of changes, see the [Changelog](https://github.com/robotcodedev/robotcode/blob/main/CHANGELOG.md).
+
+- [Report issues](https://github.com/robotcodedev/robotcode/issues)
+- [Discussions & Q&A](https://github.com/robotcodedev/robotcode/discussions)
+- [Sponsor RobotCode](https://opencollective.com/robotcode)