ci: auto-merge version PR to streamline releases (Fission-AI#474)

* Add changeset for Continue support, shell completions, and explore command

* ci: auto-merge version PR to streamline releases

Enable auto-merge on the changesets version PR so it merges
automatically once CI passes. This reduces the release process
from 2 manual PR merges to effectively 1.

Requires enabling "Allow auto-merge" in repository settings
and branch protection rules on main.

Author: TabishB

.changeset/continue-shells-telemetry.md

@@ -0,0 +1,19 @@
+---
+"@fission-ai/openspec": minor
+---
+
+### New Features
+
+- **Continue IDE support** – OpenSpec now generates slash commands for [Continue](https://continue.dev/), expanding editor integration options alongside Cursor, Windsurf, Claude Code, and others
+- **Shell completions for Bash, Fish, and PowerShell** – Run `openspec completion install` to set up tab completion in your preferred shell
+- **`/opsx:explore` command** – A new thinking partner mode for exploring ideas and investigating problems before committing to changes
+- **Codebuddy slash command improvements** – Updated frontmatter format for better compatibility
+
+### Bug Fixes
+
+- Shell completions now correctly offer parent-level flags (like `--help`) when a command has subcommands
+- Fixed Windows compatibility issues in tests
+
+### Other
+
+- Added optional anonymous usage statistics to help understand how OpenSpec is used. This is **opt-out** by default – set `OPENSPEC_TELEMETRY=0` or `DO_NOT_TRACK=1` to disable. Only command names and version are collected; no arguments, file paths, or content. Automatically disabled in CI environments.

.github/workflows/release-prepare.yml

@@ -36,6 +36,7 @@ jobs:
 
       # Opens/updates the Version Packages PR; publishes when the Version PR merges
       - name: Create/Update Version PR
+        id: changesets
         uses: changesets/action@v1
         with:
           title: 'chore(release): version packages'
@@ -46,3 +47,10 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           # npm authentication handled via OIDC trusted publishing (no token needed)
+
+      # Auto-merge the version PR when CI passes (reduces release to effectively 1 PR)
+      - name: Enable auto-merge for Version PR
+        if: steps.changesets.outputs.pullRequestNumber
+        run: gh pr merge ${{ steps.changesets.outputs.pullRequestNumber }} --auto --squash
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}