chore: bump version to 0.4.0

feat: add --base flag to milestone-runner for configurable target branch

feat: add milestone-runner command to gsdu plugin

feat: support workstream layouts in autopilot path resolution

fix: remove duplicate skill entry to prevent autopilot infinite loop

fix: inline workflow into command file to fix autopilot infinite loop

fix: disable model auto-invocation to prevent autopilot infinite loop

fix: resolve autopilot infinite loop by adding Agent tool and recursion guards

fix: add command wrapper so autopilot appears in slash autocomplete

refactor: restructure repo for multi-plugin marketplace layout

chore: bump version to 0.1.1

fix: enable model invocation for autopilot skill

fix: correct marketplace.json source path format

docs: clarify installation steps and local dev description

docs: fix plugin installation instructions in README