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/**
* System-prompt service handle + interface.
*
* The service is the single-responder anchor the session-orchestrator obtains
* (lazily, via `host.getService(systemPromptHandle)`) to construct and read the
* per-conversation resolved system prompt.
*/
import { defineService, type ServiceHandle } from "@dispatch/kernel";
/**
* The system-prompt service.
*
* `construct` resolves the template once (first turn / compaction) and persists
* the result; `get` reads the persisted result on subsequent turns (cache-safe —
* no per-turn reconstruction).
*/
export interface SystemPromptService {
/**
* Resolve the template against the current environment and persist the
* result under `resolved:<conversationId>`. Returns the resolved string.
* When no template is stored, the built-in default template is used. An
* empty template yields an empty string.
*
* When `context.computerId` is set, the resolver uses remote-backed adapters
* (reading the remote's `/etc/os-release`, `hostname`, `uname`, `git` via
* the ExecBackend/SSH) so the system prompt reflects the REMOTE machine.
*/
construct(
conversationId: string,
cwd: string,
context?: {
readonly model?: string;
readonly workspaceId?: string;
readonly computerId?: string;
},
): Promise<string>;
/** Read the persisted resolved system prompt, or `null` if never constructed. */
get(conversationId: string): Promise<string | null>;
/**
* Read the persisted resolved system prompt AND the cwd + computerId it was
* built against. Returns `{ prompt: null, cwd: null, computerId: null }` if
* never constructed. Consumers use this to detect whether the cached prompt
* is stale relative to the current effective cwd or computerId.
*/
getWithMeta(conversationId: string): Promise<{
readonly prompt: string | null;
readonly cwd: string | null;
readonly computerId: string | null;
}>;
/** Read the global template (or `DEFAULT_TEMPLATE` when none is stored). */
getTemplate(): Promise<string>;
/** Set (upsert) the global template. An empty string means "no system prompt". */
setTemplate(template: string): Promise<void>;
}
/**
* Typed handle anchoring the system-prompt service. The single symbol the
* session-orchestrator imports to reach the builder — no string-keyed lookup.
*/
export const systemPromptHandle: ServiceHandle<SystemPromptService> =
defineService<SystemPromptService>("system-prompt");
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