[CHA-2595] ci: enforce manually triggered release flow

[mogita]

No description provided.

[Copilot]

Pull request overview

This PR updates the GitHub Actions release workflow to only run via manual dispatch, simplifying the release gating/version-bump logic in CI and aligning release execution with an explicit operator-triggered flow.

Changes:

• Restricts .github/workflows/release.yml to workflow_dispatch only and removes the prior automatic “check-release” gating logic.
• Simplifies version bumping to rely solely on workflow_dispatch inputs (with an option to publish the current .csproj version).
• Updates the SDK/package version constants in src/stream-feed-net.csproj and src/Client.cs.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
src/stream-feed-net.csproj	Changes the NuGet package <Version> value (currently set to 6.0.0 in this PR).
src/Client.cs	Updates the hardcoded VersionName used for the X-Stream-Client header to match the SDK version.
.github/workflows/release.yml	Removes push-based triggering and the check-release job; release now runs only when manually dispatched and uses dispatch inputs for bumping.

Comments suppressed due to low confidence (1)

.github/workflows/release.yml:24

• release.yml is now manual-only (workflow_dispatch). The Create Release PR workflow currently tells reviewers that merging the PR will automatically create a release, which is no longer true once the push trigger is removed; please update that workflow/PR template messaging (or reintroduce an automatic trigger) to avoid misleading release operators.

on:
  workflow_dispatch:
    inputs:
      version_bump:
        description: 'Version bump type'
        required: true
        default: 'patch'
        type: choice
        options:
          - patch
          - minor
          - major
      prerelease:
        description: 'Is this a prerelease?'
        required: false
        default: false
        type: boolean
      use_current_version:
        description: 'Skip version bump and publish the version already in .csproj (version_bump is ignored)'
        required: false
        default: false
        type: boolean

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[Copilot]

The workflow creates releases and pushes commits using GITHUB_TOKEN but does not declare explicit permissions. If the repo default token permission is read-only, git push and gh release create will fail; please add least-privilege permissions (e.g., contents: write) at the workflow or job level.