Fix GitHub release repository context

[andymeierdev]

Summary

• pass the explicit GitHub repository to both release lookup and creation
• preserve idempotent release retries without requiring a repository checkout

Root cause

The Publish job downloads the verified package but does not check out the repository. GitHub CLI therefore failed with fatal: not a git repository while creating v2026.8.0.

Verification

• reproduced the failure from a directory outside a Git checkout
• confirmed gh release view succeeds there with --repo meiermade/FSharp.ViewEngine
• confirmed the existing release is detected by the updated idempotent shell logic
• validated publish.yml with actionlint 1.7.12
• git diff --check

[github-actions]

🍹 preview on fsharp-view-engine/prod

Pulumi report

View in Pulumi Cloud

  Previewing update (prod)

View Live: https://app.pulumi.com/meiermade/fsharp-view-engine/prod/previews/eb338957-9ca6-4bd8-9adb-f235abdb8890

pulumi:pulumi:Stack: (same)
  [urn=urn:pulumi:prod::fsharp-view-engine::pulumi:pulumi:Stack::fsharp-view-engine-prod]
  ~ kubernetes:apps/v1:Deployment: (update)
      [id=fsharpviewengine/fsharpviewengine]
      [urn=urn:pulumi:prod::fsharp-view-engine::kubernetes:apps/v1:Deployment::fsharpviewengine]
    ~ spec: {
        ~ template: {
            ~ spec: {
                ~ containers: [
                    ~ [0]: {
                            ~ env: [
                                ~ [0]: {
                                        ~ value: "2026.8.0" => "preview"
                                      }
                                ~ [1]: {
                                        ~ value: "f20feaf5a823881624e57cce338e860c0e02bfd7" => "702287cc3be91e5230f27911027a6e5f2dccef7c"
                                      }
                              ]
                          }
                  ]
              }
          }
      }
Resources:
  ~ 1 to update
  9 unchanged