v0.15.0

Added

• Add optional deferred loading for interactive_shell with the enable_interactive_shell loader (#30, by @AndriiSemenkov).

Changed

• Broadened the interactive_shell tool guidance to cover user-facing CLIs that need typed input or approval (#32, by @Rianico).
• Keep interactive_shell active when deferred loading cannot expose enable_interactive_shell through Pi's tool allowlist (#30, by @AndriiSemenkov).
• Omit absent optional spawn fields from parsed and resolved spawn results.