diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7232bda9..895bf0e3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.0.8"
+  ".": "2.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..99db4ad4
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,27 @@
+# Changelog
+
+## [2.0.0](https://github.com/Vivswan/cloud-speech-for-chrome/compare/v1.0.8...v2.0.0) (2026-07-13)
+
+
+### ⚠ BREAKING CHANGES
+
+* complete rewrite; legacy flat storage keys are migrated non-destructively to the new settings object on first run.
+
+### Features
+
+* add comprehensive Vitest test suite with 96% coverage ([eda9948](https://github.com/Vivswan/cloud-speech-for-chrome/commit/eda9948d3aa0bdaf311305fff1d7c998875500a8))
+* **providers:** add OpenAI-compatible server provider ([e4c8081](https://github.com/Vivswan/cloud-speech-for-chrome/commit/e4c8081d2571c998f2ba91ec8d5945db56316526))
+* rebuild as Cloud Speech for Chrome with multi-provider TTS ([24dcf0e](https://github.com/Vivswan/cloud-speech-for-chrome/commit/24dcf0ee4933f482652f036d97d036051df8b701))
+* **web:** rework the extra-models guide around LiteLLM, fix dev-mode reset ([30b39df](https://github.com/Vivswan/cloud-speech-for-chrome/commit/30b39dfa65ab6eec4c87238afe21a25c78a7407c))
+
+
+### Bug Fixes
+
+* add type assertions for Chrome storage API ([aa81788](https://github.com/Vivswan/cloud-speech-for-chrome/commit/aa81788cf88553fad3668e71bdbda9af34bdf137))
+* avoid #i18n in the background module graph ([eda81ca](https://github.com/Vivswan/cloud-speech-for-chrome/commit/eda81ca8d15c3d5ca3844cd97d4acbd8734d72c3))
+* correct TypeScript types in test files ([66be267](https://github.com/Vivswan/cloud-speech-for-chrome/commit/66be26793bbebcd40d3ecbc09eba4d90bcc4856a))
+* ignore unused variables starting with underscore ([3f831e2](https://github.com/Vivswan/cloud-speech-for-chrome/commit/3f831e23e30662fee087a6cdd0b5d962d46a4a8c))
+* install missing @testing-library/react dependency ([b004795](https://github.com/Vivswan/cloud-speech-for-chrome/commit/b004795e14fff0f0f5c3072c715a4fa631b9d37a))
+* **providers:** reject transient custom-server failures instead of masking them ([8cc44e7](https://github.com/Vivswan/cloud-speech-for-chrome/commit/8cc44e7c6f2e926de57c28bd5c5fce8c91acdf47))
+* resolve all ESLint errors and update pre-commit hook ([ec47183](https://github.com/Vivswan/cloud-speech-for-chrome/commit/ec47183aa41379745ce32c6e0bef4da643703881))
+* resolve CodeQL alerts in tag stripping and dev shell commands ([14e653d](https://github.com/Vivswan/cloud-speech-for-chrome/commit/14e653d31cc8b63701ee33a1abdba5c75c0d85f8))