GitHub repo rename / gittensor repo update

[JSONbored]

Problem: The repository itself is still named after the old brand.

Area: Infra / GitHub

Proposal: Rename the repository via GitHub's settings. GitHub redirects git and web URLs to the new location indefinitely, but every first-party link, badge, or reference to the old path should be updated rather than relying on the redirect long-term.

Deliverables:

• Repository renamed.
• Every first-party doc/badge link updated to the new path.

Acceptance criteria:

• Cloning via both the old and new URL works.
• No first-party documentation still links the old path.

Test scenarios:

• Clone via both URLs and confirm both succeed.
• Verify CI status badges still render correctly after the rename.

Resources:

• README badges and links, contributing guide links.

Boundaries:

• Do this only after Steps 1 and 2 are stable — don't rename the repo before the brand direction and infrastructure are confirmed working.

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Part of #4761.

[linear-code]

JSO-3443