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feat(explorer): ship explorer as a workspace agent package
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‎agents/explorer/README.md‎

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# @corbits/code-agent-explorer
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## What this is
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Ready `@corbits/code-agent-explorer` agent + independently importable components:
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`agent`, `defineAgent`, `director`, `tools`, `systemPrompt`, `config`. Explorer is
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the read-only mapping & search worker: it maps the codebase against the brief and
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reports scannable findings — it never implements, reviews, or discovers the fleet.
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## Consume (runLocal)
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```ts
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import { agent } from "@corbits/code-agent-explorer";
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const run = runLocal(defining(agent), env);
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```
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## Consume (deploy runWorkflow / hub / sidecar)
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Hand the same `AgentDefinition` to a workflow — the package never exports a
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workflow itself.
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## Remix components
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```ts
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import { director, tools, systemPrompt, config } from "@corbits/code-agent-explorer";
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defineAgent({ director, ... }); // or swap tools / systemPrompt / config
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```
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Each of `agent`, `defineAgent`, `director`, `tools`, `systemPrompt`, `config` is a
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named, independently importable part.
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## Single authority
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`prompt.ts` `systemPrompt.build()` is byte-stable (the raw card, no formatting).
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`toolset.ts` `tools` literal equals the `READ_TOOLS` surface constant in
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`src/agent/directors/tool-sets.ts` (explorer is deliberately read-only — no
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`write_file`/`edit_file`/`delete_file`); drift is enforced by the in-tree
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drift-guard `src/agent/directors/explorer/package.test.ts`.

‎agents/explorer/package.json‎

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{
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"name": "@corbits/code-agent-explorer",
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"version": "0.1.0",
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"private": true,
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"type": "module",
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"license": "SEE LICENSE IN LICENSE.md",
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"exports": {
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".": {
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"types": "./src/index.ts",
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"default": "./src/index.ts"
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}
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}
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}

‎agents/explorer/src/agent.ts‎

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// Explorer assembled agent — ready unit + package defineAgent wrapper. Calls
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// `@intx/agent`'s `defineAgent` directly (no Corbits bridge). Tool mounting is
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// consumer/app-side: `tools` here is [] (the allowlist surface is exported from
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// `./toolset.js` and wired by the app harness).
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import {
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defineAgent as coreDefineAgent,
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type AgentDefinition,
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} from "@intx/agent";
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import { systemPrompt } from "./prompt.js";
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export const agent: AgentDefinition = defineAgent();
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export function defineAgent(): AgentDefinition {
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return coreDefineAgent({
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id: "explorer",
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systemPrompt: systemPrompt.build(),
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tools: [],
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capabilities: [],
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inference: { sources: [] },
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});
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}

‎agents/explorer/src/config.ts‎

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export const config = {
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spawn: { maySpawn: false },
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tier: "leaf",
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modelRole: "explore",
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} as const satisfies {
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spawn: { maySpawn: boolean; allowlist?: readonly string[] };
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tier: string;
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modelRole: string;
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};

‎agents/explorer/src/director.ts‎

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// Explorer director card; imports @intx/* only. The app asserts this satisfies
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// `DirectorPackage` in-tree (src/agent/directors/explorer/package.test.ts).
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import { tools } from "./toolset.js";
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import { systemPrompt } from "./prompt.js";
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import { config } from "./config.js";
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export const director = {
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id: "explorer",
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primaryIntent: "Map and read the codebase; no product edits",
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outOfLane: [
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"product write paths",
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"drive-by fixes",
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"shipping features",
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"review severity theater",
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],
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description: "Read-only exploration",
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systemPrompt: systemPrompt.build(),
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tools: { allow: tools },
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spawn: config.spawn,
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modelRole: config.modelRole,
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tier: config.tier,
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} as const;

‎agents/explorer/src/index.ts‎

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// Public surface — re-exports only, so the package imports no Corbits code
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// (the app asserts the director contract in-tree via drift-guard). No `workflow`
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// export: workflows consume `agent`.
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export { agent, defineAgent } from "./agent.js";
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export { director } from "./director.js";
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export { tools } from "./toolset.js";
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export { systemPrompt } from "./prompt.js";
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export { config } from "./config.js";

src/agent/directors/explorer/package.ts renamed to agents/explorer/src/prompt.ts

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import type { DirectorPackage } from "../types.js";
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import { READ_TOOLS } from "../tool-sets.js";
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/**
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* Explorer worker (CL-7020 / CL-7015 rename from explore).
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* Map/read against the brief — scannable findings only; never implement, review, or discover the fleet.
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*/
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export const explorerPackage: DirectorPackage = {
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id: "explorer",
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primaryIntent: "Map and read the codebase; no product edits",
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outOfLane: [
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"product write paths",
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"drive-by fixes",
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"shipping features",
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"review severity theater",
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],
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description: "Read-only exploration",
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systemPrompt: `You are ExplorerDirector (Explorer), a specialist in Corbits Code.
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// Single prompt authority: `build()` is pure and byte-stable — it returns an
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// identical string on every call.
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const CARD = `You are ExplorerDirector (Explorer), a specialist in Corbits Code.
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PRIMARY INTENT: map and read the codebase to answer the brief. Read, search, report. Do not implement product changes.
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You are the explore lane only — not Coder, not Reviewer, not an orchestrator. Do not spawn specialists. Blinders on: do not discover or enumerate the fleet; stay inside the brief's question.
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FINDINGS SHAPE: Findings must be a scannable map — key paths, symbols, call flow / ownership — not optional prose dump. Cite paths. No drive-by refactors, no feature work, no review severity theater.
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OUT OF LANE: product writes, drive-by fixes, shipping features, review severity theater, orchestration, spawning specialists, fleet discovery, becoming Coder/Reviewer/orchestrator as primary.`,
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tools: { allow: READ_TOOLS },
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spawn: { maySpawn: false },
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tier: "leaf",
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modelRole: "explore",
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FINISH BIAS: Prefer one thorough pass then report. Expand Findings, change approach, or write the final report — do not keep re-reading the same paths.
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OUT OF LANE: product writes, drive-by fixes, shipping features, review severity theater, orchestration, spawning specialists, fleet discovery, becoming Coder/Reviewer/orchestrator as primary.`;
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export const theme = "explorer";
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export const systemPrompt = {
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theme,
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build: (): string => CARD,
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};

‎agents/explorer/src/toolset.ts‎

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// Explorer read surface only: literal expansion of the `READ_TOOLS` constant in
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// src/agent/directors/tool-sets.ts (the single tool authority). Drift is enforced
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// in-tree by src/agent/directors/explorer/package.test.ts.
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export const tools = [
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"read_file",
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"grep",
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"search_files",
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"list_dir",
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"lsp",
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"run_shell",
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"web_fetch",
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"web_search",
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"skill_search",
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"use_skill",
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] as const;

‎agents/explorer/tsconfig.json‎

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{
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"extends": "../../tsconfig.base.json",
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"compilerOptions": {
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"noEmit": true
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},
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"include": ["src/**/*.ts"]
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}

‎bun.lock‎

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