chore: extract branch from download of examples

[levivannoort]

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[greptile-apps]

Greptile Summary

This PR fixes the downloadExamples function to always fetch from the main branch of appwrite/appwrite (since version-pinned example folders only exist there), while still using appwriteExamplesBranch as the subdirectory path. It also adds a CI workflow that validates the build and content-download steps on every PR targeting main.

• scripts/download-content.ts: Introduces a local ref = "main" constant with an explanatory comment, and updates the giget call to use it instead of the version string as the git ref; the "branch" label in the log is corrected to "version".
• .github/workflows/ci.yml: New workflow that checks out the repo, installs dependencies, runs bun run build, and executes bun run download-content on each pull request.

Confidence Score: 5/5

Safe to merge — the change correctly decouples the git ref from the version string, and the CI workflow is straightforward.

The core logic fix is well-reasoned and accompanied by an explanatory comment. The CI workflow uses up-to-date action versions and mirrors the existing local workflow. No correctness issues are present in the changed code.

No files require special attention.

Important Files Changed

Filename	Overview
.github/workflows/ci.yml	New CI workflow that runs build and download-content on every PR targeting main; uses actions/checkout@v6 (latest), setup-bun@v2, and explicit patch-package step alongside the postinstall hook
scripts/download-content.ts	Decouples git ref from version string — ref is now hardcoded to "main" with an explanatory comment; console.log label updated from "branch" to "version"; logic is correct

_{Reviews (2): Last reviewed commit: "ci: validate build and content download ..." | Re-trigger Greptile}