Fix release pipeline not triggering on direct tag push

[Copilot]

The release workflow only fired on release: types: [created] events (GitHub UI release creation). Pushing a tag directly (e.g. git push origin v0.6) silently skipped the pipeline.

Changes

• Added push: tags: ['v*'] trigger alongside the existing release trigger
• Unified tag name resolution — replaced all github.event.release.tag_name with github.event.release.tag_name || github.ref_name to handle both trigger contexts
• Auto-create GitHub Release on tag push — added a pre-upload step in upload-release-assets that creates a GitHub Release for the tag if one doesn't already exist (required for gh release upload to succeed when no release was created via UI)

on:
  release:
    types: [created]
  push:
    tags:
      - 'v*'

Original prompt

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This section details on the original issue you should resolve

<issue_title>CI już się nie triggeruje na tag v0.6</issue_title>
<issue_description>Stworzyłem nowy tag w githubie ale release pipeline się nie striggerował - coś się popsuło ostatnio</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes CI już się nie triggeruje na tag v0.6 #34

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