Add mise/ubi support with platform-specific release assets

.editorconfig

@@ -9,9 +9,6 @@ charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[*.json]
-insert_final_newline = ignore
-
 [Makefile]
 indent_style = tab
 

.github/workflows/check.yaml

@@ -14,6 +14,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Setup mise
+        uses: jdx/mise-action@v2
+
       - name: Find bash scripts
         id: find-bash
         run: |

.github/workflows/release.yaml

@@ -38,12 +38,29 @@ jobs:
 
       - name: Run release-it
         id: release
+        env:
+          GITHUB_TOKEN: ${{ steps.auth.outputs.token }}
         run: |
           yarn release-it --ci
           TAG=$(git describe --tags --abbrev=0)
           echo "tag=$TAG" >> "$GITHUB_OUTPUT"
           echo "version=${TAG#v}" >> "$GITHUB_OUTPUT"
 
+      - name: Upload release assets
+        env:
+          GITHUB_TOKEN: ${{ steps.auth.outputs.token }}
+        run: |
+          TAG="${{ steps.release.outputs.tag }}"
+          # git-wt is a platform-independent bash script, but ubi (used by
+          # mise) expects assets named with OS/arch patterns. Upload copies
+          # for each supported platform so `mise install ubi:nsheaps/git-wt`
+          # works out of the box.
+          for platform in linux-amd64 linux-arm64 darwin-amd64 darwin-arm64; do
+            cp bin/git-wt "git-wt-${platform}"
+          done
+          gh release upload "$TAG" git-wt-linux-amd64 git-wt-linux-arm64 git-wt-darwin-amd64 git-wt-darwin-arm64
+          rm -f git-wt-linux-amd64 git-wt-linux-arm64 git-wt-darwin-amd64 git-wt-darwin-arm64
+
   update-homebrew:
     needs: release
     runs-on: ubuntu-latest
@@ -72,11 +89,10 @@ jobs:
           echo "tag=$TAG" >> "$GITHUB_OUTPUT"
 
           # Download archive tarball and calculate SHA256
-          # Archive is available instantly (no CDN delay like release assets)
           TARBALL_URL="https://github.com/${{ github.repository }}/archive/refs/tags/${TAG}.tar.gz"
           echo "Downloading tarball from: $TARBALL_URL"
           curl -fsSL "$TARBALL_URL" -o /tmp/archive.tar.gz
-          SHA256=$(shasum -a 256 /tmp/archive.tar.gz | cut -d' ' -f1)
+          SHA256=$(sha256sum /tmp/archive.tar.gz | cut -d' ' -f1)
           echo "sha256=$SHA256" >> "$GITHUB_OUTPUT"
           echo "Successfully got SHA256: $SHA256"
 
@@ -96,7 +112,17 @@ jobs:
         run: |
           gomplate -f Formula/git-wt.rb.gotmpl -o homebrew-devsetup/Formula/git-wt.rb
 
-      - name: Create PR to update formula with auto-merge
+      - name: Close stale formula PRs
+        run: |
+          cd homebrew-devsetup
+          # Close any open PRs from previous formula updates — they're superseded
+          gh pr list --state open --search "chore: update git-wt to" --json number,title --jq '.[].number' | while read -r pr_num; do
+            echo "Closing superseded PR #${pr_num}"
+            gh pr close "$pr_num" --comment "Superseded by v${{ steps.release.outputs.version }} update."
+          done
+
+      - name: Create PR to update formula
+        id: formula-pr
         env:
           RELEASE_URL: https://github.com/${{ github.repository }}/releases/tag/${{ steps.release.outputs.tag }}
           JOB_URL: ${{ env.GITHUB_JOB_URL }}
@@ -105,22 +131,37 @@ jobs:
         run: |
           cd homebrew-devsetup
           BRANCH="bump-git-wt-${VERSION}"
+
+          # Delete remote branch if it exists from a previous failed run
+          git push origin --delete "$BRANCH" 2>/dev/null || true
+
           git checkout -b "$BRANCH"
           git add Formula/git-wt.rb
           git commit -m "chore: update git-wt to ${VERSION}"
           git push -u origin "$BRANCH"
 
-          # Create PR body file
-          cat > /tmp/pr-body.md << 'BODY_EOF'
-          Automated formula update from git-wt release
-          BODY_EOF
-          echo "" >> /tmp/pr-body.md
-          echo "**Release:** ${RELEASE_URL}" >> /tmp/pr-body.md
-          echo "**Workflow:** ${JOB_URL}" >> /tmp/pr-body.md
+          printf 'Automated formula update from git-wt release\n\n**Release:** %s\n**Workflow:** %s\n' "$RELEASE_URL" "$JOB_URL" > /tmp/pr-body.md
 
           PR_URL=$(gh pr create \
             --title "chore: update git-wt to ${VERSION}" \
             --body-file /tmp/pr-body.md \
             --base main)
-          # Enable auto-merge with squash
-          gh pr merge "$PR_URL" --auto --squash
+          echo "pr_url=$PR_URL" >> "$GITHUB_OUTPUT"
+
+      - name: Enable auto-merge with retry
+        env:
+          PR_URL: ${{ steps.formula-pr.outputs.pr_url }}
+        run: |
+          # Retry auto-merge — CI checks on the target repo need time to start,
+          # and the GraphQL API rejects enablePullRequestAutoMerge while the PR
+          # is in "unstable" (checks pending) status.
+          for attempt in 1 2 3 4 5; do
+            if gh pr merge "$PR_URL" --auto --squash; then
+              echo "Auto-merge enabled successfully on attempt ${attempt}"
+              exit 0
+            fi
+            wait=$((attempt * 10))
+            echo "Auto-merge not ready (attempt ${attempt}/5), waiting ${wait}s..."
+            sleep "$wait"
+          done
+          echo "::warning::Could not enable auto-merge after 5 attempts. PR was created successfully at ${PR_URL} — merge manually or re-run."

docs/specs/live/cli-non-interactive-mode.md

@@ -11,26 +11,26 @@ Command-line interface for scripting and non-TTY environments.
 ### Functional Requirements
 
 1. **TTY Detection**
-   - Detect when stdin/stdout are not TTY
-   - Automatically switch to non-interactive behavior
+    - Detect when stdin/stdout are not TTY
+    - Automatically switch to non-interactive behavior
 
 2. **Usage Display (no arguments)**
-   - Print usage information
-   - List existing worktrees with paths
-   - List branches without worktrees
+    - Print usage information
+    - List existing worktrees with paths
+    - List branches without worktrees
 
 3. **Branch Switch (`git-wt [branch]`)**
-   - Create worktree if doesn't exist
-   - Print worktree path to stdout (for `cd "$(git-wt branch)"`)
-   - Silent operation (no interactive prompts)
+    - Create worktree if doesn't exist
+    - Print worktree path to stdout (for `cd "$(git-wt branch)"`)
+    - Silent operation (no interactive prompts)
 
 4. **Exec Flags**
-   - `--exec` - Spawn shell in worktree (override default)
-   - `--no-exec` - Print path only (default in CLI mode)
+    - `--exec` - Spawn shell in worktree (override default)
+    - `--no-exec` - Print path only (default in CLI mode)
 
 5. **Error Handling**
-   - Exit with non-zero status on errors
-   - Print errors to stderr
+    - Exit with non-zero status on errors
+    - Print errors to stderr
 
 ### Non-Functional Requirements
 
@@ -58,8 +58,8 @@ cd "$(git-wt feature-branch)"
 
 ### Usage Output
 ```
-Usage: git-wt [branch]       Switch to or create worktree
-       git-wt d [branch]     Delete worktree (requires --force)
+Usage: git-wt [branch]        Switch to or create worktree
+      git-wt d [branch]       Delete worktree (requires --force)
 
 Options:
   --exec      Spawn shell in worktree (instead of printing path)

docs/specs/live/interactive-worktree-selector.md

@@ -11,27 +11,27 @@ The primary interactive TUI for selecting and managing git worktrees using fzf.
 ### Functional Requirements
 
 1. **Worktree Listing**
-   - Display all existing worktrees with their branch names and paths
-   - Show root checkout labeled as `[root]`
-   - Show worktrees labeled as `[worktree]`
+    - Display all existing worktrees with their branch names and paths
+    - Show root checkout labeled as `[root]`
+    - Show worktrees labeled as `[worktree]`
 
 2. **Branch Listing**
-   - Display local branches without worktrees
-   - Display remote branches (with `origin/` prefix stripped in display)
+    - Display local branches without worktrees
+    - Display remote branches (with `origin/` prefix stripped in display)
 
 3. **Selection Interface**
-   - Use fzf for fuzzy-finding selection
-   - Support keyboard navigation
-   - Show preview panel with PR information (if gh CLI available)
+    - Use fzf for fuzzy-finding selection
+    - Support keyboard navigation
+    - Show preview panel with PR information (if gh CLI available)
 
 4. **Actions on Selection**
-   - Switch to existing worktree
-   - Create new worktree for branch without one
-   - Create new branch and worktree
+    - Switch to existing worktree
+    - Create new worktree for branch without one
+    - Create new branch and worktree
 
 5. **Post-Selection Behavior**
-   - Spawn new shell in selected worktree directory
-   - Support `--no-exec` to print path instead
+    - Spawn new shell in selected worktree directory
+    - Support `--no-exec` to print path instead
 
 ### Non-Functional Requirements
 

docs/specs/live/repo-switching.md

@@ -11,16 +11,16 @@ Switch between different git repositories when not already in a repo.
 ### Functional Requirements
 
 1. **Repo Discovery**
-   - Scan configured directory for git repositories
-   - Default scan directory: `~/src`
-   - Configurable via `--scan-dir DIR`
+    - Scan configured directory for git repositories
+    - Default scan directory: `~/src`
+    - Configurable via `--scan-dir DIR`
 
 2. **Repo Selection**
-   - Use fzf for fuzzy-finding repos
-   - Display repo paths for selection
+    - Use fzf for fuzzy-finding repos
+    - Display repo paths for selection
 
 3. **Post-Selection**
-   - Continue to normal worktree selector for chosen repo
+    - Continue to normal worktree selector for chosen repo
 
 ### Non-Functional Requirements
 

docs/specs/live/upgrade-notifications.md

@@ -11,22 +11,22 @@ Background check for new releases with non-intrusive notification.
 ### Functional Requirements
 
 1. **Background Check**
-   - Check GitHub releases API asynchronously
-   - Do not block main script execution
-   - Cache/throttle to avoid excessive API calls
+    - Check GitHub releases API asynchronously
+    - Do not block main script execution
+    - Cache/throttle to avoid excessive API calls
 
 2. **Version Comparison**
-   - Compare current version against latest release
-   - Only notify if newer version available
+    - Compare current version against latest release
+    - Only notify if newer version available
 
 3. **Notification Display**
-   - Show at script exit (after main operation completes)
-   - Display current version and available version
-   - Provide upgrade command
+    - Show at script exit (after main operation completes)
+    - Display current version and available version
+    - Provide upgrade command
 
 4. **Suppression**
-   - Do NOT show in non-interactive mode
-   - Only show when TTY available
+    - Do NOT show in non-interactive mode
+    - Only show when TTY available
 
 ### Non-Functional Requirements
 

docs/specs/live/worktree-deletion.md

@@ -11,22 +11,22 @@ Delete git worktrees with appropriate safety confirmations.
 ### Functional Requirements
 
 1. **Delete Command**
-   - `git-wt d [branch]` to delete worktree for specified branch
-   - Cannot delete root checkout
+    - `git-wt d [branch]` to delete worktree for specified branch
+    - Cannot delete root checkout
 
 2. **Interactive Mode**
-   - Show confirmation prompt via gum
-   - If uncommitted changes, show force confirmation
-   - Use gum spinner during deletion
+    - Show confirmation prompt via gum
+    - If uncommitted changes, show force confirmation
+    - Use gum spinner during deletion
 
 3. **Non-Interactive Mode**
-   - Require `--force` flag
-   - Fail with helpful error if `--force` not provided
+    - Require `--force` flag
+    - Fail with helpful error if `--force` not provided
 
 4. **Error Handling**
-   - Error if branch has no worktree
-   - Error if trying to delete root checkout
-   - Handle uncommitted changes gracefully
+    - Error if branch has no worktree
+    - Error if trying to delete root checkout
+    - Handle uncommitted changes gracefully
 
 ### Non-Functional Requirements
 

mise.toml

@@ -1,6 +1,8 @@
 [tools]
 node = "lts"
 yarn = "4"
+shellcheck = "latest"
+shfmt = "latest"
 
 [tasks.test]
 description = "Run CLI tests"