better-setup-deadcode v1: pinned go install

README.md

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+# better-setup-deadcode
+
+Pinned `golang.org/x/tools/cmd/deadcode` via `go install` (run it after better-setup-go).
+
+```yaml
+- uses: https://git.madapes.com/actions/better-setup-go@v1
+  with: { go-version: "1.27.0" }
+- uses: https://git.madapes.com/actions/better-setup-deadcode@v1
+  with: { version: "v0.52.0" }
+```

action.yml

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+name: better-setup-deadcode
+description: Install a pinned golang.org/x/tools deadcode binary via go install (requires Go on PATH) — no package manager needed, Forgejo/act runner safe.
+inputs:
+  version:
+    description: Exact golang.org/x/tools version (vX.Y.Z) providing cmd/deadcode.
+    required: true
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        set -euo pipefail
+        GOBIN=/usr/local/bin go install "golang.org/x/tools/cmd/deadcode@${{ inputs.version }}"
+        deadcode -h 2>&1 | head -1