webdev-kit-updaterlisted

# WebDev Kit Updater ## Purpose Inspect or upgrade an existing host installation from the public WebDev Agent Kit repository. Reconcile upstream changes with local edits without resetting project knowledge, client caches, or host instructions. This is an agent-run procedure, not an unattended updater or a bundled executable installer. ## When To Use - The user asks to update an installed Kit to a release or specified revision. - The user asks which upstream changes apply to an existing installation. - The user asks to preserve project customizations during a Kit upgrade. - The user asks to recover or roll back an interrupted Kit update. ## When Not To Use - Creating or editing a Kit release in its source repository: use `agent-rules-skill-author`. - First installation: use `project-onboarding-adapter` after package selection. - Refreshing cached project facts without changing Kit version: use `project-context-adapter`. - Updating application dependencies, unrelated plugins, or client software. - Ordinary code work or background checks for new releases. ## Required Context 1. Read applicable host instructions and the installed runtime policy (or the native plugin prelude). Resolve project state under the host's `.agents/project/`, never under a shared plugin cache. 2. Identify check-only, apply, or rollback intent; the host project; actual installation path; client/target; and requested release/revision. 3. Read `references/upgrade-procedure.md` before acq