Fix CLI completion install errors and Homebrew tap detection

[ChiragAgg5k]

Addresses two findings from the Greptile review on appwrite/sdk-for-cli#304.

What's Changed

• P1 — templates/cli/lib/completions.ts: Wrap the completion install action handler in a try/catch. installCompletion calls fs.mkdirSync and fs.writeFileSync synchronously, so an EACCES on ~/.zfunc (or any other filesystem error) used to crash the process with a raw stack trace. We now print Failed to install <shell> completion: <message> to stderr and exit with a non-zero code.
• P2 — templates/cli/lib/utils.ts: Broaden getInstalledHomebrewFormula so users who installed via a non-official tap (e.g. homebrew/core/appwrite, or a personal tap whose formula tail is appwrite) are detected correctly. Previously the lookup only matched appwrite/appwrite/appwrite and the bare name appwrite; anything else fell through to the official tap formula, and the subsequent brew upgrade appwrite/appwrite/appwrite would fail with "formula not installed". The official tap is still preferred when it's installed; the recommendation hint to switch to the official tap continues to fire as before.

Verification

• Regenerated examples/cli/ via php example.php cli — both fixes are reflected in the regenerated examples/cli/lib/completions.ts and examples/cli/lib/utils.ts.
• Templates only — no language class or getFiles() changes required.

Follow-up

After merge, cut a new sdk-generator release and regenerate appwrite/sdk-for-cli so 19.2.0 ships with these fixes.

[greptile-apps]

Greptile Summary

This PR applies two targeted fixes to the CLI SDK templates: a try/catch around installCompletion in completions.ts to surface filesystem errors gracefully, and a broadened formula-detection fallback in utils.ts that matches any installed Homebrew formula whose last path segment equals the executable name. Both changes are narrow, well-scoped, and the examples directory has been regenerated to reflect them.

Confidence Score: 5/5

Safe to merge — both changes are narrow bug fixes with no regressions introduced.

No P0 or P1 issues found. The try/catch in completions.ts correctly uses process.exitCode rather than process.exit() so commander can finish cleanly. The tapMatch fallback in utils.ts is sound: preferred formulas are always checked first, empty lines are filtered before the loop, and brew list --formula --full-name output is alphabetically ordered so the fallback result is deterministic.

No files require special attention.

Important Files Changed

Filename	Overview
templates/cli/lib/completions.ts	Wraps installCompletion in try/catch; writes to stderr and sets process.exitCode = 1 on failure — correct approach that lets commander.js finish before exiting.
templates/cli/lib/utils.ts	Adds a fallback tapMatch pass that matches any installed formula whose last /-delimited segment equals the executable name; preferred formulas are still checked first.

_{Reviews (1): Last reviewed commit: "Fix CLI completion install errors and Ho..." | Re-trigger Greptile}