add gemini cli manifest, logo and .md

[joaolrc]

Implement the approach suggested by @ttpears in #4

[joaolrc]

One more thing.
After the merge, "gemini-cli-extension" needs to added the GitHub Topic so the repo is listed on https://geminicli.com/extensions

Instructions as per gemini:

Go to your repository on GitHub.
Click the Settings gear icon next to "About" on the right sidebar.
In the "Topics" field, add: gemini-cli-extension
Save changes

[ttpears]

Thanks @joaolrc — this lines up with what we discussed in #4. A few small things, nothing blocking:

• GEMINI.md and logo.png are committed mode 755. Mind dropping them to 644? Happy to push the fix if easier.
• gemini-extension.json is missing a trailing newline.
• In GEMINI.md under "Large Pages": "scan the headers first" doesn't quite map to what the server exposes — get_page returns the full content and there's no headers-only tool. Could you reword to something like "extract the relevant section from the returned content"?

Once those are in I'll merge.

[joaolrc]

Hi @ttpears
Implemented the requested changes. please check.

Thanks

[ttpears]

Shipped in v3.4.0 — on npm and as an MCPB bundle for Claude Desktop on the release page. Thanks again @joaolrc for the contribution, and for the follow-up clean-up.

I also added the gemini-cli-extension topic to the repo as you suggested.