/**
 * TML shell registry — named templates cloned into projection slots before mount.
 * @module trellis/ui
 */
export type ShellId = 'issue.card' | 'lane.card' | 'lane.row';
export type EntityKind = 'issue' | 'lane';
export type ProjectionHost = 'kanban' | 'grid' | 'table';
export type AdminView = 'kanban' | 'grid' | 'table';
/** Register a `<template>` or element as the canonical shell body. */
export declare function registerShell(id: ShellId, source: HTMLTemplateElement | Element): void;
/** Test helper — clear registry between tests. */
export declare function clearShellRegistry(): void;
export declare function hostFromView(view: AdminView): ProjectionHost;
/** Read `--ui-vantage` / `data-ui-vantage` from root (default 8). */
export declare function readUiVantage(root: Element): number;
export declare function applyUiVantage(root: Element, vantage?: number): number;
/** Resolve shell id from entity kind + vantage + projection host. */
export declare function shellForVantage(kind: EntityKind, _vantage: number, host?: ProjectionHost): ShellId | null;
/** Clear hydration markers so slots can be re-filled. */
export declare function clearShellHydration(root: Element): void;
/** Clone registered shells into every `[data-shell-slot="<id>"]` under root. Idempotent. */
export declare function hydrateShellSlots(root: Element): void;
/** Apply vantage + hydrate before TML mount. */
export declare function prepareShellsBeforeMount(root: Element): void;
/** Re-hydrate shells after view toggle (no page reload). */
export declare function rehydrateShellsForView(root: Element, _view: AdminView): void;
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