Release: promote the OpenScene rename to production

[sjungwon03]

Scope

Promote the reviewed dev lineage to main so the OpenScene rename reaches production.

Commits in this promotion:

• 80eebf5 — feat: rename OpenVideo to OpenScene and move the site to openscene.app (feat: rename OpenVideo to OpenScene and move the site to openscene.app #160)
• 8f7c92f — chore: remove leftover conflict files and patch artifacts (chore: remove leftover conflict files and patch artifacts #163)

Acceptance criteria

• A release labeled PR from dev into main passes verify and release-promotion and carries a latest-head independent approval before squash merge.
• After the merge, the production deployment is verified and these public routes respond as expected:
  • https://openscene.app/ serves the renamed site with the OPEN SCENE wordmark.
  • https://openscene.app/sitemap.xml and /robots.txt reference openscene.app.
  • https://openscene.app/docs and /docs/ko serve the bilingual documentation.
  • https://open-video.app/, https://www.open-video.app/, and https://openvideo.theorvane.tech/ each redirect permanently to openscene.app.
  • https://theorvane.tech/ links its product card at openscene.app.

Non-goals

• No code change. This is a promotion of already-reviewed commits.
• Renaming the openvideo.theorvane.tech hostname, which must keep resolving for its redirect to be reached.