Claiming namespace dotportion

### Namespace
dotportion

### Ownership
- [x] The namespace is not currently owned on Open VSX (verified via open-vsx.org — namespace is unowned/unverified)

### Account Age
- [x] The GitHub ID making this request has at least 12 months of public history

### VS Code Publisher without Repo
- [x] The namespace is also a publisher account on the VS Code Marketplace and has a published extension, but that extension's declared repository is currently private and not usable as public verification evidence.

### Claim evidence
I am the same person who:
- Owns the "dotportion" publisher on the VS Code Marketplace: https://marketplace.visualstudio.com/publishers/dotportion
- Published the extension `dotportion.dotportion-extension` there: https://marketplace.visualstudio.com/items?itemName=dotportion.dotportion-extension
- Created the "dotportion" namespace on Open VSX and published the same extension: https://open-vsx.org/extension/dotportion/dotportion-extension
- Own the domain https://dotportion.com — "Dotportion" is our product/company name, and my contact email on file with the Microsoft Marketplace account is sricharan.rayala@dotportion.com, on the same domain.

Happy to provide further verification (DNS TXT record, a marker file on the site, etc.) if useful.

Review the claim checklist and the linked Open VSX namespace, VS Code Marketplace publisher and extension pages. Done means the requester’s ownership evidence is verified and the dotportion namespace claim is resolved.

Written by the indexing model from the issue text.