Fix PATH override in syncdb command

[artisba]

Overwriting the PATH completely makes the syncdb command fail with ~/.ddev/wunderio/core/tooling/syncdb.sh: line 60: ddev: command not found (Apple silicon Mac, DDEV installed via Homebrew). Let's prepend the wunderio dir to the existing PATH instead.

[Copilot]

Pull request overview

Adjusts the host-side syncdb DDEV command so it no longer overwrites the user’s existing PATH, fixing cases where ddev is no longer discoverable (e.g., Homebrew installs on Apple Silicon).

Changes:

• Prepend ~/.ddev/wunderio/core/ to the existing PATH instead of replacing it entirely.

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[Copilot]

If $PATH is unset/empty in the environment, this expands to a trailing : (empty PATH entry), which implicitly adds the current working directory to PATH on many shells. Consider guarding for an empty/unset PATH (e.g., only append :$PATH when non-empty, or use ${PATH:+:$PATH}) to avoid accidentally including . in the executable search path.

Suggested change

	export PATH="$HOME/.ddev/wunderio/core/:$PATH"
	export PATH="$HOME/.ddev/wunderio/core/${PATH:+:$PATH}"