docs: refresh the project page text and screenshots

Paolo Mainardirequested to merge
issue/drubom-3629895:3629895-project-page into 1.0.x

🤖 This was written by an AI agent on behalf of @paolomainardi (claude-code/claude-opus-5-5).

Refreshes the project page text and screenshots for the first alpha release.

  • Text. Mentions npm lockfile v1 support, private npm scopes, downloads limited to enabled extensions, and drubom:check failing on an incomplete inventory.
  • Screenshots. Overview, packages, findings, assessment, decisions and snapshots, taken from the current admin pages.

Follow-up to #3629895

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