fix: quote CLI string examples with whitespace

[ChiragAgg5k]

Summary

• quote generated CLI string examples when they contain shell-unsafe characters
• escape embedded single quotes using POSIX shell-safe quoting
• fix generated commands such as --default Hello World and values such as don't

Fixes the Greptile finding on appwrite/sdk-for-cli#362.

Validation

• php example.php cli
• composer refactor:check
• composer lint
• composer lint-twig
• test -z "$(gofmt -l examples/cli)"
• git diff --check

[greptile-apps]

Greptile Summary

The PR updates generated CLI string examples to use shell-safe quoting for whitespace and other unsafe characters.

• Detects characters outside a conservative shell-safe set.
• Wraps affected values in single quotes.
• Escapes embedded apostrophes using the standard 3216'"'"' sequence.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
src/SDK/Language/Concern/CliCommandSurface.php	Expands CLI string-example quoting to cover apostrophes and shell metacharacters; the previously reported whitespace-free apostrophe failure is resolved.

_{Reviews (3): Last reviewed commit: "fix: escape shell metacharacters in CLI ..." | Re-trigger Greptile}

[ChiragAgg5k]

@greptile review