v1.6.1

## What's Changed
* skills: reference new cloud cli by @bearsyankees in https://github.com/usestrix/strix/pull/1227
* MCP call errors no longer quarantine the connection by @yoni-at-strix in https://github.com/usestrix/strix/pull/1228
* fix(tui): run environment and model checks on the no-target start screen by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1232
* fix(ci): make the pre-commit mypy hook and the test suite pass on a fresh checkout by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1234
* fix(config): merge env into cli-config.json and invalidate the linked LLM connection on change by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1236
* feat(models): add GLM-5.3, Fable 5.1, Gemini 3.7 Flash to the recommended list and make openrouter/z-ai/glm-5.3 the top pick by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1235
* docs(readme): trim the strix cloud section to the essentials by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1237
* docs: trim crammed README sections and add cloud CLI and viewer docs pages by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1238
* docs(readme): shorten the coding-agent skills paragraph by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1239
* chore: release v1.6.1 by @devin-ai-integration[bot] in https://github.com/usestrix/strix/pull/1240


**Full Changelog**: https://github.com/usestrix/strix/compare/v1.6.0...v1.6.1