sync-shadcn

# Sync Shadcn Handle $ARGUMENTS. Read the complete [sync policy](./references/policy.md), then the selected mode below. pstack's poteto-mode owns lifecycle and existing authority, the lead writes every change, and a plan takes the plan-page shape; this skill owns upstream range accounting, Plate forks, slice decisions and sync state. Plate's docs app is a forked product. Upstream owns the Fumadocs/shadcn docs architecture; Plate owns editor content, demos, registry, API MDX, CN docs, MCP, Plate Plus hooks, GA and intentional forks. Keep that ownership explicit. ## Modes | Request | Complete method | | --- | --- | | No command, a range or a named surface | [Planning and implementation handoff](./references/planning.md) | | `status` | [Incremental status and discovery](./references/status.md) | | `apply` | [Accepted slice application](./references/apply.md) | | `dashboard` | [Review board](./references/dashboard.md) | | `review` | [Re-audit the current plan](./references/review.md) | | `parity <surface>`, or a request to mirror shadcn | [Registry and install protocol parity](./references/parity.md) | Named scope constrains the inventory. An unscoped sync inventories the whole tracked range. Read `docs/sync/shadcn/status.json` and `decisions.md` before classifying current source. Record exact upstream SHAs and every relevant row. Planning is the default. Explicit planning-only work stops at the reviewable plan. Already-authorized implementation continues when readiness is resolved; do not ask for a second invocation. The full policy defines the narrow micro-overlap rule; it never overrides an explicit read-only request. Apply and revalidate only accepted rows. Preserve source-owned forks and real route proof. Advance `lastSyncedCommit` only after complete range accounting and applicable verification. A partial slice cannot claim the whole range. All procedures, examples, inventory shapes, commands and prompts live in the linked mode references. Read them in full when selected. Do not replace them with the entrypoint summary or create a parallel sync ledger.