Version Packages (#517)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: openspec-release-bot[bot]

.changeset/v0.21-release.md

@@ -1,5 +1,23 @@
 # @fission-ai/openspec
 
+## 0.21.0
+
+### Minor Changes
+
+- [#516](https://github.com/Fission-AI/OpenSpec/pull/516) [`b5a8847`](https://github.com/Fission-AI/OpenSpec/commit/b5a884748be6156a7bb140b4941cfec4f20a9fc8) Thanks [@TabishB](https://github.com/TabishB)! - ### New Features
+
+  - **Feedback command** — Submit feedback directly from the CLI with `openspec feedback`, which creates GitHub Issues with automatic metadata inclusion and graceful fallback for manual submission
+  - **Nix flake support** — Install and develop openspec using Nix with the new `flake.nix`, including automated flake maintenance and CI validation
+
+  ### Bug Fixes
+
+  - **Explore mode guardrails** — Explore mode now explicitly prevents implementation, keeping the focus on thinking and discovery while still allowing artifact creation
+
+  ### Other
+
+  - Improved change inference in `opsx apply` — automatically detects the target change from conversation context or prompts when ambiguous
+  - Streamlined archive sync assessment with clearer delta spec location guidance
+
 ## 0.20.0
 
 ### Minor Changes

CHANGELOG.md

@@ -1,6 +1,6 @@
 {
   "name": "@fission-ai/openspec",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "description": "AI-native system for spec-driven development",
   "keywords": [
     "openspec",