refactor(agents): reduce local AI tooling

This commit is contained in:
2026-08-26 15:55:43 -04:00
parent 09d8e72065
commit 17326fa65b
14 changed files with 0 additions and 2646 deletions

View File

@@ -62,12 +62,9 @@
tasksMax = 512;
};
modules.agents.claude-code.enable = true;
modules.agents.herdr.enable = true;
modules.agents.tools.gitea-axi.enable = true;
modules.agents.pi.enable = true;
modules.agents.pi.subagents.maxConcurrent = 8;
modules.agents.pi.subagents.recentTerminalTtlMs = 15 * 60 * 1000;
modules.desktop.enable = true;
modules.desktop.obsidian.enable = true;

View File

@@ -1,141 +0,0 @@
import { existsSync, readdirSync, readFileSync } from "node:fs";
import { homedir } from "node:os";
import { basename, join } from "node:path";
import type { ContextMode } from "./types.ts";
import type { Diagnostics } from "./config.ts";
export interface AgentDefinition {
name: string;
description: string;
body: string;
context?: ContextMode;
model?: string;
thinking?: string;
tools?: string;
allowedContexts?: ContextMode[];
hidden?: boolean;
source: string;
}
export function loadAgents(cwd: string, projectTrusted: boolean, diagnostics: Diagnostics, agentDir = defaultAgentDir()): Map<string, AgentDefinition> {
const user = loadTier(join(agentDir, "agents"), "user", diagnostics);
const project = projectTrusted ? loadTier(join(cwd, ".pi", "agents"), "project", diagnostics) : new Map<string, AgentDefinition>();
return new Map([...user, ...project]);
}
function loadTier(dir: string, tier: string, diagnostics: Diagnostics): Map<string, AgentDefinition> {
const agents = new Map<string, AgentDefinition>();
if (!existsSync(dir)) return agents;
for (const entry of readdirSync(dir, { withFileTypes: true })) {
if (!entry.isFile() || !entry.name.endsWith(".md")) continue;
const path = join(dir, entry.name);
const parsed = parseAgent(path, diagnostics);
if (!parsed) continue;
if (agents.has(parsed.name)) {
diagnostics.warnings.push(`Duplicate ${tier} agent '${parsed.name}' ignored at ${path}`);
continue;
}
const stem = basename(entry.name, ".md");
if (stem !== parsed.name) diagnostics.warnings.push(`${tier} agent file '${entry.name}' name '${parsed.name}' does not match filename`);
agents.set(parsed.name, parsed);
}
return agents;
}
export function parseAgent(path: string, diagnostics: Diagnostics): AgentDefinition | undefined {
try {
const text = readFileSync(path, "utf8");
const match = /^---\n([\s\S]*?)\n---\n?([\s\S]*)$/u.exec(text);
if (!match) {
diagnostics.warnings.push(`Agent ${path} missing YAML frontmatter`);
return undefined;
}
const frontmatter = parseFrontmatter(match[1]);
const name = stringField(frontmatter, "name");
const description = stringField(frontmatter, "description");
if (!name || !/^[a-z0-9-]+$/.test(name)) {
diagnostics.warnings.push(`Agent ${path} has invalid name`);
return undefined;
}
if (!description) {
diagnostics.warnings.push(`Agent ${path} has invalid description`);
return undefined;
}
const context = contextField(frontmatter.context);
const allowedContexts = contextsField(frontmatter.allowedContexts);
if (frontmatter.context !== undefined && !context) diagnostics.warnings.push(`Agent ${path} has invalid context`);
if (frontmatter.allowedContexts !== undefined && !allowedContexts) diagnostics.warnings.push(`Agent ${path} has invalid allowedContexts`);
if (context && allowedContexts && !allowedContexts.includes(context)) diagnostics.warnings.push(`Agent ${path} context is outside allowedContexts`);
return {
name,
description,
body: match[2].trim(),
context,
model: stringField(frontmatter, "model"),
thinking: stringField(frontmatter, "thinking"),
tools: stringField(frontmatter, "tools"),
allowedContexts,
hidden: booleanField(frontmatter, "hidden"),
source: path,
};
} catch (error) {
diagnostics.warnings.push(`Failed to load agent ${path}: ${error instanceof Error ? error.message : String(error)}`);
return undefined;
}
}
function parseFrontmatter(text: string): Record<string, unknown> {
const result: Record<string, unknown> = {};
const lines = text.split(/\r?\n/u);
for (let i = 0; i < lines.length; i += 1) {
const line = lines[i];
if (!line.trim() || line.trimStart().startsWith("#")) continue;
const scalar = /^(\w+):\s*(.*?)\s*$/u.exec(line);
if (!scalar) continue;
const [, key, raw] = scalar;
if (raw !== "") {
result[key] = parseScalar(raw);
continue;
}
const values: string[] = [];
while (i + 1 < lines.length) {
const item = /^\s+-\s*(.*?)\s*$/u.exec(lines[i + 1]);
if (!item) break;
values.push(String(parseScalar(item[1])));
i += 1;
}
result[key] = values;
}
return result;
}
function parseScalar(raw: string): string | boolean {
const unquoted = raw.replace(/^['"]|['"]$/gu, "");
if (unquoted === "true") return true;
if (unquoted === "false") return false;
return unquoted;
}
function stringField(record: Record<string, unknown>, key: string): string | undefined {
const value = record[key];
return typeof value === "string" && value.trim() ? value.trim() : undefined;
}
function booleanField(record: Record<string, unknown>, key: string): boolean | undefined {
const value = record[key];
return typeof value === "boolean" ? value : undefined;
}
function contextField(value: unknown): ContextMode | undefined {
return value === "independent" || value === "fork" ? value : undefined;
}
function contextsField(value: unknown): ContextMode[] | undefined {
if (!Array.isArray(value)) return undefined;
const contexts = value.map(contextField);
return contexts.every(Boolean) ? (contexts as ContextMode[]) : undefined;
}
function defaultAgentDir(): string {
return process.env.PI_CODING_AGENT_DIR ?? join(homedir(), ".pi", "agent");
}

View File

@@ -1,139 +0,0 @@
import assert from "node:assert/strict";
import { mkdtempSync, mkdirSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import test from "node:test";
import { loadAgents } from "./agents.ts";
import { BUILT_IN_TOOL_PROFILES, loadConfig, resolveSpawn, type Diagnostics } from "./config.ts";
function fixture() {
const root = mkdtempSync(join(tmpdir(), "subagents-config-"));
const agentDir = join(root, "agent");
const cwd = join(root, "project");
mkdirSync(agentDir, { recursive: true });
mkdirSync(cwd, { recursive: true });
return { root, agentDir, cwd };
}
function diagnostics(): Diagnostics {
return { warnings: [] };
}
test("missing config files and agent directories are normal", () => {
const { cwd, agentDir } = fixture();
const diag = diagnostics();
const config = loadConfig(cwd, true, diag, agentDir);
const agents = loadAgents(cwd, true, diag, agentDir);
assert.equal(config.defaultContext, "independent");
assert.equal(config.defaultTools, "read-only");
assert.equal(config.recentTerminalTtlMs, 300000);
assert.equal(agents.size, 0);
assert.deepEqual(diag.warnings, []);
});
test("global and trusted project config merge in order", () => {
const { cwd, agentDir } = fixture();
mkdirSync(join(cwd, ".pi"), { recursive: true });
writeFileSync(join(agentDir, "subagents.json"), JSON.stringify({ defaultTools: "global-profile", recentTerminalTtlMs: 1000, toolProfiles: { "global-profile": { activeTools: ["read"] } } }));
writeFileSync(join(cwd, ".pi", "subagents.json"), JSON.stringify({ defaultTools: "project-profile", recentTerminalTtlMs: 2000, toolProfiles: { "project-profile": { activeTools: ["ls"] } } }));
const config = loadConfig(cwd, true, diagnostics(), agentDir);
assert.equal(config.defaultTools, "project-profile");
assert.equal(config.recentTerminalTtlMs, 2000);
assert.deepEqual(config.toolProfiles["global-profile"].activeTools, ["read"]);
assert.deepEqual(config.toolProfiles["project-profile"].activeTools, ["ls"]);
});
test("recent terminal ttl preserves zero and rejects invalid values", () => {
const { cwd, agentDir } = fixture();
writeFileSync(join(agentDir, "subagents.json"), JSON.stringify({ recentTerminalTtlMs: 0 }));
const zeroDiag = diagnostics();
const zeroConfig = loadConfig(cwd, true, zeroDiag, agentDir);
assert.equal(zeroConfig.recentTerminalTtlMs, 0);
assert.deepEqual(zeroDiag.warnings, []);
writeFileSync(join(agentDir, "subagents.json"), JSON.stringify({ recentTerminalTtlMs: -1 }));
const invalidDiag = diagnostics();
const invalidConfig = loadConfig(cwd, true, invalidDiag, agentDir);
assert.equal(invalidConfig.recentTerminalTtlMs, 300000);
assert.ok(invalidDiag.warnings.some((warning) => warning.includes("Invalid global recentTerminalTtlMs ignored")));
});
test("project config is ignored when project is untrusted", () => {
const { cwd, agentDir } = fixture();
mkdirSync(join(cwd, ".pi"), { recursive: true });
writeFileSync(join(cwd, ".pi", "subagents.json"), JSON.stringify({ defaultTools: "project-profile", toolProfiles: { "project-profile": { activeTools: ["ls"] } } }));
const config = loadConfig(cwd, false, diagnostics(), agentDir);
assert.equal(config.defaultTools, "read-only");
assert.equal(config.toolProfiles["project-profile"], undefined);
});
test("agents load with project precedence over user", () => {
const { cwd, agentDir } = fixture();
mkdirSync(join(agentDir, "agents"), { recursive: true });
mkdirSync(join(cwd, ".pi", "agents"), { recursive: true });
writeFileSync(join(agentDir, "agents", "review.md"), "---\nname: review\ndescription: User review\ntools: read-only\n---\nuser body\n");
writeFileSync(join(cwd, ".pi", "agents", "review.md"), "---\nname: review\ndescription: Project review\ntools: full-tools\n---\nproject body\n");
const agents = loadAgents(cwd, true, diagnostics(), agentDir);
assert.equal(agents.get("review")?.description, "Project review");
assert.equal(agents.get("review")?.body, "project body");
});
test("duplicate same-tier definitions and invalid frontmatter produce diagnostics", () => {
const { cwd, agentDir } = fixture();
const dir = join(agentDir, "agents");
mkdirSync(dir, { recursive: true });
writeFileSync(join(dir, "one.md"), "---\nname: same\ndescription: One\n---\none\n");
writeFileSync(join(dir, "two.md"), "---\nname: same\ndescription: Two\n---\ntwo\n");
writeFileSync(join(dir, "bad.md"), "---\nname: Bad Name\n---\nbad\n");
const diag = diagnostics();
const agents = loadAgents(cwd, true, diag, agentDir);
assert.equal(agents.size, 1);
assert.ok(diag.warnings.some((warning) => warning.includes("Duplicate user agent 'same'")));
assert.ok(diag.warnings.some((warning) => warning.includes("invalid name")));
});
test("named spawn resolves overrides, frontmatter, config, and defaults", () => {
const { cwd, agentDir } = fixture();
mkdirSync(join(agentDir, "agents"), { recursive: true });
writeFileSync(join(agentDir, "subagents.json"), JSON.stringify({ defaultTools: "local-review", toolProfiles: { "local-review": { activeTools: ["read"] } } }));
writeFileSync(join(agentDir, "agents", "review.md"), "---\nname: review\ndescription: Review\ncontext: independent\nmodel: inherit\nthinking: high\ntools: local-review\n---\nagent body\n");
const diag = diagnostics();
const config = loadConfig(cwd, true, diag, agentDir);
const agents = loadAgents(cwd, true, diag, agentDir);
const resolved = resolveSpawn({ agent: "review", prompt: "check this", label: "Review migration", thinking: "low" }, config, agents);
assert.equal(resolved.prompt, "check this");
assert.equal(resolved.label, "Review migration");
assert.equal(resolved.context, "independent");
assert.equal(resolved.model, "inherit");
assert.equal(resolved.thinking, "low");
assert.equal(resolved.tools, "local-review");
assert.deepEqual(resolved.toolProfile.activeTools, ["read"]);
assert.equal(resolved.agentBody, "agent body");
});
test("built-in tool profile names cannot be overridden", () => {
const { cwd, agentDir } = fixture();
writeFileSync(join(agentDir, "subagents.json"), JSON.stringify({ toolProfiles: { "read-only": { activeTools: ["bash"] } } }));
const diag = diagnostics();
const config = loadConfig(cwd, true, diag, agentDir);
assert.deepEqual(config.toolProfiles["read-only"], BUILT_IN_TOOL_PROFILES["read-only"]);
assert.ok(diag.warnings.some((warning) => warning.includes("Ignoring global override for built-in tool profile 'read-only'")));
});

View File

@@ -1,182 +0,0 @@
import { existsSync, readFileSync } from "node:fs";
import { homedir } from "node:os";
import { join } from "node:path";
import type { ContextMode, SpawnRequest, ToolProfile } from "./types.ts";
import type { AgentDefinition } from "./agents.ts";
export interface Diagnostics {
warnings: string[];
}
export interface SubagentsConfig {
defaultContext: ContextMode;
defaultTools: string;
maxConcurrent: number;
recentTerminalTtlMs: number;
ui: {
enabled: boolean;
defaultExpanded: boolean;
};
toolProfiles: Record<string, ToolProfile>;
}
export interface ResolvedSpawnRequest extends SpawnRequest {
prompt: string;
context: ContextMode;
tools: string;
toolProfile: ToolProfile;
agentBody?: string;
}
export const BUILT_IN_TOOL_PROFILES: Record<string, ToolProfile> = {
none: { activeTools: [] },
"read-only": { activeTools: ["read", "grep", "find", "ls"] },
"read-only-with-safe-bash": { activeTools: ["read", "grep", "find", "ls", "bash"] },
"full-tools": { activeTools: null },
};
const DEFAULT_CONFIG: SubagentsConfig = {
defaultContext: "independent",
defaultTools: "read-only",
maxConcurrent: 3,
recentTerminalTtlMs: 5 * 60 * 1000,
ui: { enabled: true, defaultExpanded: false },
toolProfiles: { ...BUILT_IN_TOOL_PROFILES },
};
export function loadConfig(cwd: string, projectTrusted: boolean, diagnostics: Diagnostics, agentDir = defaultAgentDir()): SubagentsConfig {
let config = cloneConfig(DEFAULT_CONFIG);
config = mergeConfig(config, readConfig(join(agentDir, "subagents.json"), diagnostics, "global"), diagnostics, "global");
if (projectTrusted) {
config = mergeConfig(config, readConfig(join(cwd, ".pi", "subagents.json"), diagnostics, "project"), diagnostics, "project");
}
if (!config.toolProfiles[config.defaultTools]) {
diagnostics.warnings.push(`Unknown defaultTools profile '${config.defaultTools}', using read-only`);
config.defaultTools = "read-only";
}
return config;
}
export function resolveSpawn(request: SpawnRequest, config: SubagentsConfig, agents: Map<string, AgentDefinition>): ResolvedSpawnRequest {
const prompt = typeof request.prompt === "string" ? request.prompt.trim() : "";
if (!prompt) throw new Error("prompt is required");
const agent = request.agent ? agents.get(request.agent) : undefined;
if (request.agent && !agent) throw new Error(`unknown subagent agent: ${request.agent}`);
const context = request.context ?? agent?.context ?? config.defaultContext;
if (context !== "independent" && context !== "fork") throw new Error(`unsupported context: ${context}`);
if (agent?.allowedContexts && !agent.allowedContexts.includes(context)) {
throw new Error(`agent '${agent.name}' does not allow ${context} context`);
}
const tools = request.tools ?? agent?.tools ?? config.defaultTools;
const toolProfile = config.toolProfiles[tools];
if (!toolProfile) throw new Error(`unknown tool profile: ${tools}`);
return {
...request,
prompt,
agent: agent?.name ?? request.agent,
context,
model: request.model ?? agent?.model,
thinking: request.thinking ?? agent?.thinking,
tools,
toolProfile,
agentBody: agent?.body,
};
}
function readConfig(path: string, diagnostics: Diagnostics, label: string): Partial<SubagentsConfig> | undefined {
if (!existsSync(path)) return undefined;
try {
const parsed = JSON.parse(readFileSync(path, "utf8"));
return normalizeConfig(parsed, diagnostics, label);
} catch (error) {
diagnostics.warnings.push(`Invalid ${label} subagents.json: ${error instanceof Error ? error.message : String(error)}`);
return undefined;
}
}
function normalizeConfig(raw: unknown, diagnostics: Diagnostics, label: string): Partial<SubagentsConfig> | undefined {
if (!raw || typeof raw !== "object" || Array.isArray(raw)) {
diagnostics.warnings.push(`Invalid ${label} subagents.json: root must be an object`);
return undefined;
}
const input = raw as Record<string, unknown>;
const config: Partial<SubagentsConfig> = {};
if (input.defaultContext === "independent" || input.defaultContext === "fork") config.defaultContext = input.defaultContext;
else if (input.defaultContext !== undefined) diagnostics.warnings.push(`Invalid ${label} defaultContext ignored`);
if (typeof input.defaultTools === "string") config.defaultTools = input.defaultTools;
else if (input.defaultTools !== undefined) diagnostics.warnings.push(`Invalid ${label} defaultTools ignored`);
if (typeof input.maxConcurrent === "number" && Number.isInteger(input.maxConcurrent) && input.maxConcurrent > 0) config.maxConcurrent = input.maxConcurrent;
else if (input.maxConcurrent !== undefined) diagnostics.warnings.push(`Invalid ${label} maxConcurrent ignored`);
if (typeof input.recentTerminalTtlMs === "number" && Number.isInteger(input.recentTerminalTtlMs) && input.recentTerminalTtlMs >= 0) {
config.recentTerminalTtlMs = input.recentTerminalTtlMs;
} else if (input.recentTerminalTtlMs !== undefined) diagnostics.warnings.push(`Invalid ${label} recentTerminalTtlMs ignored`);
if (input.ui !== undefined) config.ui = normalizeUi(input.ui, diagnostics, label);
if (input.toolProfiles !== undefined) config.toolProfiles = normalizeProfiles(input.toolProfiles, diagnostics, label);
return config;
}
function normalizeUi(raw: unknown, diagnostics: Diagnostics, label: string): SubagentsConfig["ui"] | undefined {
if (!raw || typeof raw !== "object" || Array.isArray(raw)) {
diagnostics.warnings.push(`Invalid ${label} ui ignored`);
return undefined;
}
const input = raw as Record<string, unknown>;
return {
enabled: typeof input.enabled === "boolean" ? input.enabled : DEFAULT_CONFIG.ui.enabled,
defaultExpanded: typeof input.defaultExpanded === "boolean" ? input.defaultExpanded : DEFAULT_CONFIG.ui.defaultExpanded,
};
}
function normalizeProfiles(raw: unknown, diagnostics: Diagnostics, label: string): Record<string, ToolProfile> {
const profiles: Record<string, ToolProfile> = {};
if (!raw || typeof raw !== "object" || Array.isArray(raw)) {
diagnostics.warnings.push(`Invalid ${label} toolProfiles ignored`);
return profiles;
}
for (const [name, value] of Object.entries(raw as Record<string, unknown>)) {
if (name in BUILT_IN_TOOL_PROFILES) {
diagnostics.warnings.push(`Ignoring ${label} override for built-in tool profile '${name}'`);
continue;
}
const profile = normalizeProfile(value);
if (!profile) {
diagnostics.warnings.push(`Invalid ${label} tool profile '${name}' ignored`);
continue;
}
profiles[name] = profile;
}
return profiles;
}
function normalizeProfile(raw: unknown): ToolProfile | undefined {
if (!raw || typeof raw !== "object" || Array.isArray(raw)) return undefined;
const activeTools = (raw as { activeTools?: unknown }).activeTools;
if (!Array.isArray(activeTools) || !activeTools.every((tool) => typeof tool === "string")) return undefined;
return { activeTools };
}
function mergeConfig(base: SubagentsConfig, override: Partial<SubagentsConfig> | undefined, diagnostics: Diagnostics, label: string): SubagentsConfig {
if (!override) return base;
const merged = cloneConfig(base);
if (override.defaultContext) merged.defaultContext = override.defaultContext;
if (override.defaultTools) merged.defaultTools = override.defaultTools;
if (override.maxConcurrent) merged.maxConcurrent = override.maxConcurrent;
if (override.recentTerminalTtlMs !== undefined) merged.recentTerminalTtlMs = override.recentTerminalTtlMs;
if (override.ui) merged.ui = { ...merged.ui, ...override.ui };
if (override.toolProfiles) merged.toolProfiles = { ...merged.toolProfiles, ...override.toolProfiles };
for (const key of Object.keys(merged.toolProfiles)) {
if (key in BUILT_IN_TOOL_PROFILES) merged.toolProfiles[key] = BUILT_IN_TOOL_PROFILES[key];
}
return merged;
}
function cloneConfig(config: SubagentsConfig): SubagentsConfig {
return { ...config, ui: { ...config.ui }, toolProfiles: { ...config.toolProfiles } };
}
function defaultAgentDir(): string {
return process.env.PI_CODING_AGENT_DIR ?? join(homedir(), ".pi", "agent");
}

View File

@@ -1,326 +0,0 @@
import type { ExtensionAPI, ExtensionContext } from "@earendil-works/pi-coding-agent";
import { Type } from "typebox";
import { loadAgents } from "./agents.ts";
import { loadConfig, resolveSpawn, type Diagnostics } from "./config.ts";
import { SubprocessRpcRunner } from "./runner.ts";
import { Supervisor } from "./supervisor.ts";
import { milestoneNotification } from "./status.ts";
import type { SpawnRequest, SubagentStatus } from "./types.ts";
import { widget } from "./ui.ts";
let supervisor: Supervisor | undefined;
let lastDiagnostics: Diagnostics = { warnings: [] };
let lastStatuses: SubagentStatus[] = [];
let uiExpanded = false;
export default function subagents(pi: ExtensionAPI) {
const getSupervisor = (ctx: ExtensionContext): Supervisor => {
if (supervisor) return supervisor;
const diagnostics: Diagnostics = { warnings: [] };
const cwd = cwdOf(ctx);
const config = loadConfig(cwd, isProjectTrusted(ctx), diagnostics);
lastDiagnostics = diagnostics;
uiExpanded = config.ui.defaultExpanded;
supervisor = new Supervisor(new SubprocessRpcRunner(), cwd, {
maxConcurrent: config.maxConcurrent,
recentTerminalTtlMs: config.recentTerminalTtlMs,
onMilestone: (status, event) => {
pi.appendEntry("subagent_milestone", { event, status });
const notification = milestoneNotification(status, event);
if (notification) ctx.ui?.notify?.(notification.message, notification.level);
},
onChange: (statuses) => {
lastStatuses = statuses;
updateUi(ctx, config.ui.enabled);
},
});
updateUi(ctx, config.ui.enabled);
return supervisor;
};
const resolve = (ctx: ExtensionContext, request: SpawnRequest): SpawnRequest => {
const diagnostics: Diagnostics = { warnings: [] };
const cwd = cwdOf(ctx);
const trusted = isProjectTrusted(ctx);
const config = loadConfig(cwd, trusted, diagnostics);
const agents = loadAgents(cwd, trusted, diagnostics);
lastDiagnostics = diagnostics;
const resolved = resolveSpawn(request, config, agents);
if (resolved.context === "fork") resolved.parentSessionFile = ctx.sessionManager.getSessionFile();
return resolved;
};
pi.registerTool({
name: "subagent_spawn",
label: "Spawn subagent",
description: "Start one ad hoc independent subagent and return immediately with its child id",
parameters: Type.Object({
prompt: Type.String({ description: "Prompt for the delegated subagent" }),
label: Type.Optional(Type.String({ description: "Human-readable label for this work item" })),
agent: Type.Optional(Type.String({ description: "Named agent definition to use" })),
context: Type.Optional(Type.Union([Type.Literal("independent"), Type.Literal("fork")])),
model: Type.Optional(Type.String({ description: "Optional model selector for the child" })),
thinking: Type.Optional(Type.String({ description: "Optional thinking level for the child" })),
tools: Type.Optional(Type.String({ description: "Tool profile name" })),
}),
async execute(_toolCallId, params, _signal, _onUpdate, ctx) {
const accepted = getSupervisor(ctx).spawn(resolve(ctx, params as SpawnRequest));
ctx.ui?.notify?.(`Started subagent ${accepted.label}`, "info");
return textResult(accepted);
},
});
pi.registerTool({
name: "subagent_batch",
label: "Spawn subagent batch",
description: "Start multiple subagents and return immediately with accepted child ids and per-entry failures",
parameters: Type.Object({
subagents: Type.Array(
Type.Object({
prompt: Type.String({ description: "Prompt for the delegated subagent" }),
label: Type.Optional(Type.String({ description: "Human-readable label for this work item" })),
agent: Type.Optional(Type.String({ description: "Named agent definition to use" })),
context: Type.Optional(Type.Union([Type.Literal("independent"), Type.Literal("fork")])),
model: Type.Optional(Type.String({ description: "Optional model selector for the child" })),
thinking: Type.Optional(Type.String({ description: "Optional thinking level for the child" })),
tools: Type.Optional(Type.String({ description: "Tool profile name" })),
}),
),
}),
async execute(_toolCallId, params, _signal, _onUpdate, ctx) {
const requests = Array.isArray((params as { subagents?: unknown }).subagents) ? ((params as { subagents: SpawnRequest[] }).subagents) : [];
const accepted: SpawnRequest[] = [];
const failed: Array<{ index: number; error: string }> = [];
requests.forEach((request, index) => {
try {
accepted.push(resolve(ctx, request));
} catch (error) {
failed.push({ index, error: error instanceof Error ? error.message : String(error) });
}
});
const result = getSupervisor(ctx).spawnBatch(accepted);
return textResult({ accepted: result.accepted, failed: [...failed, ...result.failed] });
},
});
pi.registerTool({
name: "subagent_list",
label: "List subagents",
description: "List active and terminal subagents for this parent session until terminal entries are cleared",
parameters: Type.Object({}),
async execute(_toolCallId, _params, _signal, _onUpdate, ctx) {
return textResult(getSupervisor(ctx).list());
},
});
pi.registerTool({
name: "subagent_status",
label: "Get subagent status",
description: "Get current lifecycle status for one subagent",
parameters: Type.Object({
id: Type.String({ description: "Subagent id returned by subagent_spawn" }),
}),
async execute(_toolCallId, params, _signal, _onUpdate, ctx) {
return textResult(getSupervisor(ctx).status(String((params as { id: unknown }).id)));
},
});
pi.registerTool({
name: "subagent_result",
label: "Get subagent result",
description: "Return still-running before completion and the final answer after completion",
parameters: Type.Object({
id: Type.String({ description: "Subagent id returned by subagent_spawn" }),
}),
async execute(_toolCallId, params, _signal, _onUpdate, ctx) {
return textResult(getSupervisor(ctx).result(String((params as { id: unknown }).id)));
},
});
pi.registerTool({
name: "subagent_wait",
label: "Wait for subagents",
description: "Block until multiple subagents are terminal or a timeout expires. Prefer setting timeoutMs so the parent turn cannot hang forever",
parameters: Type.Object({
ids: Type.Array(Type.String({ description: "Subagent id returned by subagent_spawn or subagent_batch" })),
timeoutMs: Type.Optional(Type.Number({ description: "Maximum milliseconds to wait. Omit or use 0 to wait indefinitely" })),
mode: Type.Optional(Type.Union([Type.Literal("all"), Type.Literal("any")], { description: "Wait for all ids by default, or return after any id is terminal" })),
}),
async execute(_toolCallId, params, signal, _onUpdate, ctx) {
const input = params as { ids?: unknown; timeoutMs?: unknown; mode?: unknown };
const ids = Array.isArray(input.ids) ? input.ids.map(String) : [];
const timeoutMs = typeof input.timeoutMs === "number" && Number.isFinite(input.timeoutMs) ? input.timeoutMs : undefined;
const mode = input.mode === "any" ? "any" : "all";
return textResult(await getSupervisor(ctx).wait(ids, { timeoutMs, mode, signal }));
},
});
pi.registerTool({
name: "subagent_cancel",
label: "Cancel subagent",
description: "Cancel a running subagent",
parameters: Type.Object({
id: Type.String({ description: "Subagent id returned by subagent_spawn" }),
}),
async execute(_toolCallId, params, _signal, _onUpdate, ctx) {
return textResult(await getSupervisor(ctx).cancel(String((params as { id: unknown }).id)));
},
});
pi.registerTool({
name: "subagent_clear",
label: "Clear terminal subagents",
description: "Remove terminal subagents from the current-session visible work set. Omitting ids clears all terminal children",
parameters: Type.Object({
ids: Type.Optional(Type.Array(Type.String({ description: "Subagent id returned by subagent_spawn or subagent_batch" }))),
}),
async execute(_toolCallId, params, _signal, _onUpdate, ctx) {
const input = params as { ids?: unknown };
const ids = Array.isArray(input.ids) ? input.ids.map(String) : undefined;
return textResult({ cleared: getSupervisor(ctx).clearTerminal(ids) });
},
});
pi.registerCommand("subagent-spawn", {
description: "Start an ad hoc independent subagent",
handler: async (args, ctx) => {
const accepted = getSupervisor(ctx).spawn(resolve(ctx, parseSpawnArgs(args)));
ctx.ui.notify(`Started subagent ${accepted.label}`, "info");
},
});
pi.registerCommand("subagent-batch", {
description: "Start ad hoc independent subagents split by |",
handler: async (args, ctx) => {
const requests = args
.split("|")
.map((prompt) => prompt.trim())
.filter(Boolean)
.map((prompt) => resolve(ctx, { prompt }));
ctx.ui.notify(JSON.stringify(getSupervisor(ctx).spawnBatch(requests), null, 2), "info");
},
});
pi.registerCommand("subagent-list", {
description: "Show subagent status records",
handler: async (_args, ctx) => {
ctx.ui.notify(JSON.stringify(getSupervisor(ctx).list(), null, 2), "info");
},
});
pi.registerCommand("subagent-clear", {
description: "Clear terminal subagent records. Pass ids to clear selected terminal records only",
handler: async (args, ctx) => {
const ids = args.trim().split(/\s+/u).filter(Boolean);
ctx.ui.notify(JSON.stringify({ cleared: getSupervisor(ctx).clearTerminal(ids.length > 0 ? ids : undefined) }, null, 2), "info");
},
});
pi.registerCommand("subagent-status", {
description: "Show a subagent status by id",
handler: async (args, ctx) => {
ctx.ui.notify(JSON.stringify(getSupervisor(ctx).status(args.trim()), null, 2), "info");
},
});
pi.registerCommand("subagent-result", {
description: "Show a subagent result by id",
handler: async (args, ctx) => {
ctx.ui.notify(JSON.stringify(getSupervisor(ctx).result(args.trim()), null, 2), "info");
},
});
pi.registerCommand("subagent-wait", {
description: "Wait for subagent ids separated by spaces",
handler: async (args, ctx) => {
const { ids, timeoutMs, mode } = parseWaitArgs(args);
ctx.ui.notify(JSON.stringify(await getSupervisor(ctx).wait(ids, { timeoutMs, mode }), null, 2), "info");
},
});
pi.registerCommand("subagent-ui", {
description: "Toggle the bundled subagent status inspector",
handler: async (_args, ctx) => {
uiExpanded = !uiExpanded;
updateUi(ctx, true);
ctx.ui.notify(`Subagent inspector ${uiExpanded ? "expanded" : "collapsed"}`, "info");
},
});
pi.registerCommand("subagent-diagnostics", {
description: "Show subagent configuration diagnostics from the last load",
handler: async (_args, ctx) => {
ctx.ui.notify(JSON.stringify(lastDiagnostics, null, 2), "info");
},
});
pi.registerCommand("subagent-cancel", {
description: "Cancel a running subagent by id",
handler: async (args, ctx) => {
ctx.ui.notify(JSON.stringify(await getSupervisor(ctx).cancel(args.trim()), null, 2), "info");
},
});
pi.on("session_shutdown", async () => {
await supervisor?.shutdown();
supervisor = undefined;
});
}
function updateUi(ctx: ExtensionContext, enabled: boolean) {
if (!ctx.hasUI) return;
ctx.ui.setWidget("subagents", enabled ? widget(lastStatuses, uiExpanded) : undefined);
}
function parseSpawnArgs(args: string): SpawnRequest {
const parts = args.trim().split(/\s+/u);
const request: Partial<SpawnRequest> = {};
while (parts.length >= 2 && parts[0].startsWith("--")) {
const flag = parts.shift();
const value = parts.shift();
if (flag === "--agent") request.agent = value;
else if (flag === "--label") request.label = value;
else if (flag === "--context" && (value === "independent" || value === "fork")) request.context = value;
else if (flag === "--tools") request.tools = value;
else if (flag === "--model") request.model = value;
else if (flag === "--thinking") request.thinking = value;
}
return { ...request, prompt: parts.join(" ") || args } as SpawnRequest;
}
function parseWaitArgs(args: string): { ids: string[]; timeoutMs?: number; mode?: "all" | "any" } {
const parts = args.trim().split(/\s+/u).filter(Boolean);
let timeoutMs: number | undefined;
let mode: "all" | "any" | undefined;
const ids: string[] = [];
while (parts.length > 0) {
const part = parts.shift();
if (!part) continue;
if (part === "--timeout-ms" && parts[0]) {
const parsed = Number(parts.shift());
if (Number.isFinite(parsed)) timeoutMs = parsed;
} else if (part === "--mode" && (parts[0] === "all" || parts[0] === "any")) {
mode = parts.shift() as "all" | "any";
} else {
ids.push(part);
}
}
return { ids, timeoutMs, mode };
}
function isProjectTrusted(ctx: ExtensionContext): boolean {
const value = (ctx as unknown as { isProjectTrusted?: () => boolean }).isProjectTrusted?.();
return value === true;
}
function cwdOf(ctx: ExtensionContext): string {
const sessionCwd = (ctx as unknown as { sessionManager?: { getCwd?: () => string }; cwd?: string }).sessionManager?.getCwd?.();
return sessionCwd ?? (ctx as unknown as { cwd?: string }).cwd ?? process.cwd();
}
function textResult(value: unknown) {
return {
content: [{ type: "text" as const, text: JSON.stringify(value, null, 2) }],
details: value,
};
}

View File

@@ -1,118 +0,0 @@
import assert from "node:assert/strict";
import childProcess from "node:child_process";
import { EventEmitter } from "node:events";
import { fileURLToPath } from "node:url";
import test from "node:test";
import type { RunnerEvents } from "./types.ts";
class FakeStream extends EventEmitter {
setEncoding(_encoding: BufferEncoding): void {}
write(_chunk: string, callback?: (error?: Error | null) => void): boolean {
callback?.();
return true;
}
end(): void {}
}
function events(): RunnerEvents {
return {
accepted: () => {},
running: () => {},
settling: () => {},
completed: () => {},
failed: () => {},
};
}
test("child RPC process forwards structured activity before collecting the final result", async (t) => {
const running: unknown[] = [];
const completed: Array<{ result: string; stopReason?: string }> = [];
const fakeChild = new EventEmitter() as EventEmitter & {
stdout: FakeStream;
stderr: FakeStream;
stdin: FakeStream;
killed: boolean;
pid?: number;
kill(signal?: NodeJS.Signals): boolean;
};
fakeChild.stdout = new FakeStream();
fakeChild.stderr = new FakeStream();
fakeChild.stdin = new FakeStream();
fakeChild.killed = false;
fakeChild.kill = () => {
fakeChild.killed = true;
return true;
};
t.mock.method(fakeChild.stdin, "write", (chunk, callback?: (error?: Error | null) => void) => {
const request = JSON.parse(String(chunk)) as { id: string; type: string };
callback?.();
if (request.type === "get_last_assistant_text") {
queueMicrotask(() => {
fakeChild.stdout.emit("data", `${JSON.stringify({ id: request.id, type: "response", success: true, data: { text: "final answer" } })}\n`);
});
}
return true;
});
t.mock.method(childProcess, "spawn", () => fakeChild as unknown as childProcess.ChildProcessWithoutNullStreams);
const { SubprocessRpcRunner } = await import("./runner.ts");
const runner = new SubprocessRpcRunner();
await runner.start("child-1", { prompt: "work", label: "Review migration" }, "/tmp", {
...events(),
running: (event) => running.push(event),
completed: (result, stopReason) => completed.push({ result, stopReason }),
});
const firstActivity = { type: "message_start", role: "assistant", message: { id: "msg-1" } };
const secondActivity = { type: "tool_execution_start", tool: "read", input: { path: "runner.ts" } };
const settledActivity = { type: "agent_settled" };
fakeChild.stdout.emit("data", `${JSON.stringify(firstActivity)}\n${JSON.stringify(secondActivity)}\n${JSON.stringify(settledActivity)}\n`);
await new Promise((resolve) => setImmediate(resolve));
assert.deepEqual(running, [firstActivity, secondActivity, settledActivity]);
assert.deepEqual(completed, [{ result: "final answer", stopReason: "agent_settled" }]);
});
test("child RPC process disables discovery while explicitly loading subagents extension", async (t) => {
const calls: Array<{ command: string; args: string[] }> = [];
const fakeChild = new EventEmitter() as EventEmitter & {
stdout: FakeStream;
stderr: FakeStream;
stdin: FakeStream;
killed: boolean;
pid?: number;
kill(signal?: NodeJS.Signals): boolean;
};
fakeChild.stdout = new FakeStream();
fakeChild.stderr = new FakeStream();
fakeChild.stdin = new FakeStream();
fakeChild.killed = false;
fakeChild.kill = () => {
fakeChild.killed = true;
return true;
};
const spawn = t.mock.method(childProcess, "spawn", (command, args) => {
calls.push({ command: String(command), args: Array.isArray(args) ? args.map(String) : [] });
return fakeChild as unknown as childProcess.ChildProcessWithoutNullStreams;
});
const { SubprocessRpcRunner } = await import("./runner.ts");
const runner = new SubprocessRpcRunner();
await runner.start("child-1", { prompt: "work", label: "Review migration" }, "/tmp", events());
assert.equal(spawn.mock.callCount(), 1);
const args = calls[0].args;
const noExtensionsIndex = args.indexOf("--no-extensions");
const extensionIndex = args.indexOf("--extension");
const nameIndex = args.indexOf("--name");
assert.notEqual(noExtensionsIndex, -1, "child args keep automatic extension discovery disabled");
assert.notEqual(nameIndex, -1, "child args include a process name");
assert.equal(args[nameIndex + 1], "subagent Review migration");
assert.notEqual(extensionIndex, -1, "child args explicitly load the subagents extension entry");
assert.equal(args[extensionIndex + 1], fileURLToPath(new URL("./index.ts", import.meta.url)));
assert.ok(noExtensionsIndex < extensionIndex);
});

View File

@@ -1,218 +0,0 @@
import { spawn, type ChildProcessWithoutNullStreams } from "node:child_process";
import { fileURLToPath } from "node:url";
import type { ChildHandle, ChildRunner, RunnerEvents, SpawnRequest } from "./types.ts";
interface PendingResponse {
resolve(value: unknown): void;
reject(error: Error): void;
command: string;
}
interface RpcLine {
id?: string;
type?: string;
command?: string;
success?: boolean;
data?: unknown;
error?: string;
message?: string;
}
class RpcChildHandle implements ChildHandle {
private buffer = "";
private nextRequest = 0;
private settled = false;
private finishing = false;
private cancelling = false;
private killed = false;
private readonly pending = new Map<string, PendingResponse>();
constructor(
private readonly child: ChildProcessWithoutNullStreams,
private readonly events: RunnerEvents,
) {
child.stdout.setEncoding("utf8");
child.stderr.setEncoding("utf8");
child.stdout.on("data", (chunk) => this.onStdout(chunk));
child.stderr.on("data", (chunk) => this.events.running(`stderr: ${String(chunk).trim().slice(0, 200)}`));
child.on("error", (error) => this.fail(error.message));
child.on("close", (code, signal) => {
for (const pending of this.pending.values()) {
pending.reject(new Error(`RPC process closed before ${pending.command} response`));
}
this.pending.clear();
if (!this.settled) this.fail(`RPC process closed with code ${code ?? "null"} signal ${signal ?? "null"}`);
});
}
async prompt(message: string): Promise<void> {
await this.send("prompt", { message });
}
async cancel(): Promise<void> {
if (this.cancelling) return;
this.cancelling = true;
try {
await Promise.race([this.send("abort", {}), delay(200)]);
} catch {}
this.terminate();
}
private onStdout(chunk: string) {
this.buffer += chunk;
while (true) {
const newline = this.buffer.indexOf("\n");
if (newline === -1) return;
const line = this.buffer.slice(0, newline).replace(/\r$/, "");
this.buffer = this.buffer.slice(newline + 1);
if (line.trim() === "") continue;
this.onLine(line);
}
}
private onLine(line: string) {
let payload: RpcLine;
try {
payload = JSON.parse(line);
} catch {
this.events.running(`non-json rpc output: ${line.slice(0, 200)}`);
return;
}
if (payload.type === "response" && payload.id) {
const pending = this.pending.get(payload.id);
if (!pending) return;
this.pending.delete(payload.id);
if (payload.success) pending.resolve(payload.data);
else pending.reject(new Error(payload.error ?? payload.message ?? `${pending.command} failed`));
return;
}
if (payload.type === "agent_started") {
this.events.running(payload as Record<string, unknown>);
return;
}
if (payload.type === "agent_settled") {
this.events.running(payload as Record<string, unknown>);
this.finish().catch((error) => this.fail(error instanceof Error ? error.message : String(error)));
return;
}
if (payload.type) this.events.running(payload as Record<string, unknown>);
}
private async finish() {
if (this.settled || this.finishing) return;
this.finishing = true;
this.events.settling();
const result = await this.send("get_last_assistant_text", {});
const text = typeof result === "string" ? result : result && typeof result === "object" && "text" in result ? String((result as { text: unknown }).text) : "";
this.settled = true;
this.events.completed(text, "agent_settled");
this.terminate();
}
private terminate() {
if (this.killed) return;
this.killed = true;
this.child.stdin.end();
if (this.child.killed) return;
if (process.platform !== "win32" && this.child.pid) {
try {
process.kill(-this.child.pid, "SIGTERM");
} catch {
this.child.kill("SIGTERM");
}
setTimeout(() => {
if (this.child.killed || !this.child.pid) return;
try {
process.kill(-this.child.pid, "SIGKILL");
} catch {
this.child.kill("SIGKILL");
}
}, 2_000).unref();
return;
}
this.child.kill("SIGTERM");
}
private fail(error: string) {
if (this.settled) return;
this.settled = true;
this.events.failed(error);
}
private send(command: string, body: Record<string, unknown>): Promise<unknown> {
const id = `subagent-${++this.nextRequest}`;
return new Promise((resolve, reject) => {
this.pending.set(id, { resolve, reject, command });
this.child.stdin.write(`${JSON.stringify({ id, type: command, ...body })}\n`, (error) => {
if (!error) return;
this.pending.delete(id);
reject(error);
});
});
}
}
export class SubprocessRpcRunner implements ChildRunner {
async start(id: string, request: SpawnRequest, cwd: string, events: RunnerEvents): Promise<ChildHandle> {
const args = [process.argv[1], "--mode", "rpc", "--no-extensions", "--extension", subagentsExtensionPath(), "--name", `subagent ${request.label ?? id}`, ...contextArgs(request), ...toolArgs(request), ...modelArgs(request)];
const child = spawn(process.execPath, args, {
cwd,
env: childEnvironment(),
stdio: ["pipe", "pipe", "pipe"],
detached: process.platform !== "win32",
});
const handle = new RpcChildHandle(child, events);
events.accepted();
void handle.prompt(independentPrompt(request)).catch((error) => events.failed(error instanceof Error ? error.message : String(error)));
return handle;
}
}
function delay(ms: number): Promise<void> {
return new Promise((resolve) => setTimeout(resolve, ms));
}
function subagentsExtensionPath(): string {
return fileURLToPath(new URL("./index.ts", import.meta.url));
}
function contextArgs(request: SpawnRequest): string[] {
if (request.context !== "fork" || !request.parentSessionFile) return [];
return ["--fork", request.parentSessionFile];
}
function toolArgs(request: SpawnRequest): string[] {
const activeTools = request.toolProfile?.activeTools;
if (activeTools === undefined || activeTools === null) return [];
if (activeTools.length === 0) return ["--no-tools"];
return ["--tools", activeTools.join(",")];
}
function modelArgs(request: SpawnRequest): string[] {
const args: string[] = [];
if (request.model && request.model !== "inherit") args.push("--model", request.model);
if (request.thinking) args.push("--thinking", request.thinking);
return args;
}
function childEnvironment(): NodeJS.ProcessEnv {
const env = { ...process.env };
delete env.PI_SESSION_ID;
delete env.PI_SESSION_FILE;
delete env.PI_PROVIDER;
delete env.PI_MODEL;
delete env.PI_REASONING_LEVEL;
return env;
}
function independentPrompt(request: SpawnRequest): string {
const base = request.agentBody ? `${request.agentBody}\n\n` : "";
if (request.context === "fork") {
return `${base}You are running as a delegated subagent in fork context.\nUse the inherited parent session context, then return a concise final answer for the parent agent.\n\nTask:\n${request.prompt}`;
}
return `${base}You are running as a delegated subagent in independent context.\nDo not assume access to the parent conversation transcript.\nReturn a concise final answer for the parent agent.\n\nTask:\n${request.prompt}`;
}

View File

@@ -1,58 +0,0 @@
import { SUBAGENT_STATES, SUBAGENT_TERMINAL_STATES } from "./types.ts";
import type { ChildRecord, SpawnAccepted, SubagentResult, SubagentState, SubagentStatus } from "./types.ts";
export function toAccepted(status: SubagentStatus): SpawnAccepted {
return {
id: status.id,
label: status.label,
context: status.context,
tools: status.tools,
state: status.state,
hint: `Use subagent_status or subagent_result with id ${status.id}`,
};
}
export function cloneStatus(status: SubagentStatus): SubagentStatus {
return {
...status,
currentActivity: status.currentActivity ? { ...status.currentActivity } : undefined,
activityHistory: status.activityHistory.map((event) => ({ ...event })),
elapsedMs: elapsedMs(status),
};
}
export function cloneResult(record: ChildRecord): SubagentResult {
const status = cloneStatus(record.status);
const terminal = isTerminalState(status.state);
return {
id: status.id,
label: status.label,
state: status.state,
running: !terminal,
resultAvailable: status.resultAvailable,
result: record.result,
error: status.error,
completedAt: status.completedAt,
elapsedMs: status.elapsedMs,
};
}
export function isTerminalState(state: SubagentState): boolean {
return (SUBAGENT_TERMINAL_STATES as readonly string[]).includes(state);
}
export function milestoneNotification(status: SubagentStatus, event: string): { message: string; level: "info" | "error" } | undefined {
if (!isSubagentState(event) || !isTerminalState(event)) return undefined;
return { message: `Subagent ${status.label} ${event}`, level: event === "completed" ? "info" : "error" };
}
export function isSubagentState(value: string): value is SubagentState {
return (SUBAGENT_STATES as readonly string[]).includes(value);
}
export function elapsedMs(status: Pick<SubagentStatus, "startedAt" | "completedAt">): number {
const start = Date.parse(status.startedAt);
const end = status.completedAt ? Date.parse(status.completedAt) : Date.now();
if (!Number.isFinite(start) || !Number.isFinite(end)) return 0;
return Math.max(0, end - start);
}

View File

@@ -1,469 +0,0 @@
import assert from "node:assert/strict";
import test from "node:test";
import { milestoneNotification } from "./status.ts";
import { Supervisor } from "./supervisor.ts";
import type { ChildHandle, ChildRunner, RunnerEvents, SpawnRequest } from "./types.ts";
import { widget } from "./ui.ts";
class FakeHandle implements ChildHandle {
cancelCalls = 0;
async cancel(): Promise<void> {
this.cancelCalls += 1;
}
}
class FakeRunner implements ChildRunner {
starts: Array<{ id: string; request: SpawnRequest; events: RunnerEvents; handle: FakeHandle }> = [];
autoAccept = true;
async start(id: string, request: SpawnRequest, _cwd: string, events: RunnerEvents): Promise<ChildHandle> {
const handle = new FakeHandle();
this.starts.push({ id, request, events, handle });
if (this.autoAccept) events.accepted(`session-${id}`);
return handle;
}
}
const sleep = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
async function spawnStarted(supervisor: Supervisor, prompt = "work") {
const accepted = supervisor.spawn({ prompt });
await sleep(0);
return accepted;
}
test("cancel is idempotent and reaches cancelled", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = await spawnStarted(supervisor);
const first = await supervisor.cancel(accepted.id);
const second = await supervisor.cancel(accepted.id);
assert.equal(first.state, "cancelled");
assert.equal(second.state, "cancelled");
assert.equal(runner.starts[0].handle.cancelCalls, 1);
});
test("startup timeout reaches timed_out", async () => {
const runner = new FakeRunner();
runner.autoAccept = false;
const supervisor = new Supervisor(runner, "/tmp", { timeouts: { startMs: 5 } });
const accepted = await spawnStarted(supervisor);
await sleep(20);
const status = supervisor.status(accepted.id);
assert.equal(status.state, "timed_out");
assert.equal(status.stopReason, "start_timeout");
assert.equal(runner.starts[0].handle.cancelCalls, 1);
});
test("runtime timeout reaches timed_out", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp", { timeouts: { runMs: 5 } });
const accepted = await spawnStarted(supervisor);
await sleep(20);
const status = supervisor.status(accepted.id);
assert.equal(status.state, "timed_out");
assert.equal(status.stopReason, "run_timeout");
assert.equal(runner.starts[0].handle.cancelCalls, 1);
});
test("activity exposes ordered transcript events while status and list keep only summaries", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = await spawnStarted(supervisor);
runner.starts[0].events.running({ type: "message_started", role: "assistant" });
runner.starts[0].events.running({
type: "message_delta",
role: "assistant",
assistantMessageEvent: { type: "content_delta", delta: "private transcript body" },
});
runner.starts[0].events.running({ type: "tool_started", tool: "read", input: { path: "secret-notes.md" } });
runner.starts[0].events.running({ type: "tool_completed", tool: "read", output: "secret file contents" });
type ActivityStatus = ReturnType<Supervisor["status"]> & {
activityHistory: Array<{ type: string; summary: string }>;
currentActivity: { summary: string };
};
const activity = supervisor.activity(accepted.id);
const status = supervisor.status(accepted.id) as ActivityStatus;
const listed = supervisor.list().find((item) => item.id === accepted.id) as ActivityStatus | undefined;
assert.deepEqual(
activity.map((event) => event.type),
["queued", "starting", "prompt accepted", "message_started", "message_delta", "tool_started", "tool_completed"],
);
assert.deepEqual(activity[4], {
type: "message_delta",
summary: "assistant message content_delta",
at: activity[4].at,
role: "assistant",
tool: undefined,
phase: "content_delta",
text: "private transcript body",
input: undefined,
output: undefined,
error: undefined,
payload: {
type: "message_delta",
role: "assistant",
assistantMessageEvent: { type: "content_delta", delta: "private transcript body" },
},
});
assert.deepEqual(activity[5], {
type: "tool_started",
summary: "read secret-notes.md",
at: activity[5].at,
role: undefined,
tool: "read",
phase: "started",
text: undefined,
input: { path: "secret-notes.md" },
output: undefined,
error: undefined,
payload: { type: "tool_started", tool: "read", input: { path: "secret-notes.md" } },
});
assert.equal(activity[6].output, "secret file contents");
assert.ok(Array.isArray(status.activityHistory), "status should expose structured activityHistory");
assert.deepEqual(status.activityHistory.map((event) => event.type), activity.map((event) => event.type));
assert.deepEqual(status.activityHistory.map((event) => event.summary), activity.map((event) => event.summary));
assert.equal(status.currentActivity.summary, "read");
assert.equal(listed?.currentActivity.summary, "read");
assert.doesNotMatch(JSON.stringify(status), /private transcript body|secret file contents/u);
assert.doesNotMatch(JSON.stringify(listed), /private transcript body|secret file contents/u);
});
test("status activity history keeps only the 100 most recent summaries", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = await spawnStarted(supervisor);
for (let index = 0; index < 150; index += 1) {
runner.starts[0].events.running(`tick ${index}`);
}
const history = supervisor.status(accepted.id).activityHistory;
assert.equal(history.length, 100);
assert.equal(history[0].summary, "tick 50");
assert.equal(history[99].summary, "tick 149");
});
test("process failure reaches failed with diagnostics", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = await spawnStarted(supervisor);
runner.starts[0].events.failed("process closed with code 1");
const status = supervisor.status(accepted.id);
assert.equal(status.state, "failed");
assert.equal(status.error, "process closed with code 1");
});
test("shutdown cancels running children", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = await spawnStarted(supervisor);
await supervisor.shutdown();
const status = supervisor.status(accepted.id);
assert.equal(status.state, "cancelled");
assert.equal(status.stopReason, "shutdown");
assert.equal(runner.starts[0].handle.cancelCalls, 1);
});
test("completed children ignore later cancel", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = await spawnStarted(supervisor);
runner.starts[0].events.completed("done", "agent_settled");
await supervisor.cancel(accepted.id);
const result = supervisor.result(accepted.id);
assert.equal(result.state, "completed");
assert.equal(result.result, "done");
assert.equal(runner.starts[0].handle.cancelCalls, 0);
});
test("explicit labels are reused across accepted status list and result surfaces", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const label = "Review risky migration";
const accepted = supervisor.spawn({ prompt: "inspect the migration plan", label } as SpawnRequest & { label: string });
await sleep(0);
runner.starts[0].events.completed("done", "agent_settled");
assert.deepEqual(
{
accepted: accepted.label,
status: supervisor.status(accepted.id).label,
list: supervisor.list().find((status) => status.id === accepted.id)?.label,
result: (supervisor.result(accepted.id) as { label?: string }).label,
},
{
accepted: label,
status: label,
list: label,
result: label,
},
);
});
test("ad hoc fallback labels are prompt-derived and reused by widget and result surfaces", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const prompt = " Audit\n\tguest enablement plan ";
const label = "Audit guest enablement plan";
const accepted = supervisor.spawn({ prompt });
await sleep(0);
runner.starts[0].events.completed("done", "agent_settled");
const statuses = supervisor.list();
const inspectorLines = widget(statuses, true)().render(240);
assert.deepEqual(
{
accepted: accepted.label,
childRequest: runner.starts[0].request.label,
status: supervisor.status(accepted.id).label,
list: statuses.find((status) => status.id === accepted.id)?.label,
result: supervisor.result(accepted.id).label,
},
{
accepted: label,
childRequest: label,
status: label,
list: label,
result: label,
},
);
assert.ok(inspectorLines.some((line) => line.includes(`completed 0s ${label} result: available`)), inspectorLines.join("\n"));
assert.doesNotMatch(accepted.label, /^ad-hoc sg-/u);
});
test("milestone notifications use the stored label", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = supervisor.spawn({ prompt: "work", label: "Review migration" });
await sleep(0);
runner.starts[0].events.completed("done", "agent_settled");
assert.deepEqual(milestoneNotification(supervisor.status(accepted.id), "completed"), {
message: "Subagent Review migration completed",
level: "info",
});
assert.equal(milestoneNotification(supervisor.status(accepted.id), "running"), undefined);
});
test("shutdown clears recent terminal expiry timer", async () => {
const runner = new FakeRunner();
let changes = 0;
const supervisor = new Supervisor(runner, "/tmp", {
recentTerminalTtlMs: 5,
onChange: () => {
changes += 1;
},
});
await spawnStarted(supervisor);
await supervisor.shutdown();
const afterShutdown = changes;
await sleep(15);
assert.equal(changes, afterShutdown);
});
test("batch spawn returns explicit labels on accepted child requests and statuses while preserving failures", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const result = supervisor.spawnBatch([
{ prompt: "one", label: "Review docs" },
{ prompt: "" },
{ prompt: "two", label: "Check tests" },
]);
await sleep(0);
assert.deepEqual(result.accepted.map((accepted) => accepted.label), ["Review docs", "Check tests"]);
assert.equal(result.failed.length, 1);
assert.equal(result.failed[0].index, 1);
assert.deepEqual(runner.starts.map((start) => start.request.label), ["Review docs", "Check tests"]);
assert.deepEqual(result.accepted.map((accepted) => supervisor.status(accepted.id).label), ["Review docs", "Check tests"]);
});
test("maxConcurrent preserves queued records", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp", { maxConcurrent: 1 });
const result = supervisor.spawnBatch([{ prompt: "one" }, { prompt: "two" }]);
await sleep(0);
assert.equal(result.accepted.length, 2);
assert.equal(runner.starts.length, 1);
assert.equal(supervisor.status(result.accepted[1].id).state, "queued");
runner.starts[0].events.completed("done", "agent_settled");
await sleep(0);
assert.equal(runner.starts.length, 2);
});
test("clearTerminal returns only removed terminal ids", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const first = await spawnStarted(supervisor, "one");
const second = await spawnStarted(supervisor, "two");
const running = await spawnStarted(supervisor, "three");
runner.starts[0].events.completed("one done", "agent_settled");
runner.starts[1].events.completed("two done", "agent_settled");
assert.deepEqual(supervisor.clearTerminal(), [first.id, second.id]);
assert.throws(() => supervisor.status(first.id), /unknown subagent id/);
assert.throws(() => supervisor.status(second.id), /unknown subagent id/);
assert.equal(supervisor.status(running.id).state, "running");
});
test("terminal records expire after ttl while active children remain", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp", { recentTerminalTtlMs: 5 });
const completed = await spawnStarted(supervisor, "one");
const failed = await spawnStarted(supervisor, "two");
const running = await spawnStarted(supervisor, "three");
runner.starts[0].events.completed("one done", "agent_settled");
runner.starts[1].events.failed("two failed");
assert.equal(supervisor.result(completed.id).result, "one done");
assert.equal(supervisor.result(failed.id).error, "two failed");
assert.equal(supervisor.status(running.id).state, "running");
await sleep(20);
const listedIds = supervisor.list().map((status) => status.id);
assert.equal(listedIds.includes(completed.id), false);
assert.equal(listedIds.includes(failed.id), false);
assert.equal(listedIds.includes(running.id), true);
assert.throws(() => supervisor.status(completed.id), /unknown subagent id/);
assert.throws(() => supervisor.status(failed.id), /unknown subagent id/);
assert.throws(() => supervisor.result(completed.id), /unknown subagent id/);
assert.throws(() => supervisor.result(failed.id), /unknown subagent id/);
assert.equal(supervisor.status(running.id).state, "running");
});
test("zero recent terminal ttl does not hide terminal statuses", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp", { recentTerminalTtlMs: 0 });
const accepted = await spawnStarted(supervisor);
runner.starts[0].events.completed("done", "agent_settled");
assert.equal(supervisor.list().some((status) => status.id === accepted.id), true);
assert.equal(supervisor.result(accepted.id).result, "done");
});
test("wait blocks until multiple subagents are terminal", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const first = await spawnStarted(supervisor, "one");
const second = await spawnStarted(supervisor, "two");
const waiting = supervisor.wait([first.id, second.id], { timeoutMs: 100 });
runner.starts[0].events.completed("one done", "agent_settled");
await sleep(0);
assert.equal(await Promise.race([waiting.then(() => "done"), sleep(10).then(() => "pending")]), "pending");
runner.starts[1].events.failed("two failed");
const result = await waiting;
assert.equal(result.timedOut, false);
assert.equal(result.ready, true);
assert.deepEqual(result.ids, [first.id, second.id]);
assert.equal(result.pending.length, 0);
assert.deepEqual(result.results.map((item) => item.state), ["completed", "failed"]);
assert.equal(result.results[0].result, "one done");
assert.equal(result.results[1].error, "two failed");
});
test("wait returns pending statuses on timeout", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const first = await spawnStarted(supervisor, "one");
const second = await spawnStarted(supervisor, "two");
runner.starts[0].events.completed("one done", "agent_settled");
const result = await supervisor.wait([first.id, second.id], { timeoutMs: 5 });
assert.equal(result.timedOut, true);
assert.equal(result.ready, false);
assert.deepEqual(result.results.map((item) => item.state), ["completed", "running"]);
assert.deepEqual(result.pending.map((item) => item.id), [second.id]);
});
test("wait any returns after the first terminal subagent", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const first = await spawnStarted(supervisor, "one");
const second = await spawnStarted(supervisor, "two");
const waiting = supervisor.wait([first.id, second.id], { mode: "any", timeoutMs: 100 });
runner.starts[1].events.completed("two done", "agent_settled");
const result = await waiting;
assert.equal(result.timedOut, false);
assert.equal(result.ready, true);
assert.deepEqual(result.results.map((item) => item.state), ["running", "completed"]);
assert.deepEqual(result.pending.map((item) => item.id), [first.id]);
});
test("wait rejects unknown and empty id sets", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
await assert.rejects(() => supervisor.wait([]), /at least one subagent id is required/);
await assert.rejects(() => supervisor.wait(["missing"]), /unknown subagent id: missing/);
});
test("wait abort rejects without cancelling child", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp");
const accepted = await spawnStarted(supervisor, "one");
const controller = new AbortController();
const waiting = supervisor.wait([accepted.id], { signal: controller.signal });
controller.abort();
await assert.rejects(waiting, /subagent wait aborted/);
assert.equal(runner.starts[0].handle.cancelCalls, 0);
});
test("wait follows queued subagents through queue start and completion", async () => {
const runner = new FakeRunner();
const supervisor = new Supervisor(runner, "/tmp", { maxConcurrent: 1 });
const batch = supervisor.spawnBatch([{ prompt: "one" }, { prompt: "two" }]);
await sleep(0);
const waiting = supervisor.wait([batch.accepted[1].id], { timeoutMs: 100 });
assert.equal(await Promise.race([waiting.then(() => "done"), sleep(10).then(() => "pending")]), "pending");
runner.starts[0].events.completed("one done", "agent_settled");
await sleep(0);
runner.starts[1].events.completed("two done", "agent_settled");
const result = await waiting;
assert.equal(result.timedOut, false);
assert.equal(result.ready, true);
assert.deepEqual(result.results.map((item) => item.result), ["two done"]);
});

View File

@@ -1,558 +0,0 @@
import type {
ChildHandle,
ChildRecord,
ChildRunner,
ContextMode,
RunnerActivity,
RunnerEvents,
SpawnAccepted,
SpawnRequest,
SubagentResult,
SubagentStatus,
SubagentWaitMode,
SubagentWaitResult,
} from "./types.ts";
import { cloneResult, cloneStatus, isTerminalState, toAccepted } from "./status.ts";
interface RunningChild {
record: ChildRecord;
request: SpawnRequest;
handle?: ChildHandle;
startTimer?: ReturnType<typeof setTimeout>;
runTimer?: ReturnType<typeof setTimeout>;
expiryTimer?: ReturnType<typeof setTimeout>;
}
interface SupervisorOptions {
maxConcurrent?: number;
recentTerminalLimit?: number;
recentTerminalTtlMs?: number;
timeouts?: {
startMs?: number;
runMs?: number;
};
onMilestone?: (status: SubagentStatus, event: string) => void;
onChange?: (statuses: SubagentStatus[]) => void;
}
export interface BatchSpawnResult {
accepted: SpawnAccepted[];
failed: Array<{ index: number; error: string }>;
}
const DEFAULT_TIMEOUTS = {
startMs: 30_000,
runMs: 0,
};
const MAX_ACTIVITY_HISTORY = 100;
export class Supervisor {
private nextChild = 0;
private readonly children = new Map<string, RunningChild>();
private readonly queue: RunningChild[] = [];
private readonly waiters = new Set<() => void>();
constructor(
private readonly runner: ChildRunner,
private readonly cwd: string,
private readonly options: SupervisorOptions = {},
) {}
spawn(request: SpawnRequest): SpawnAccepted {
return this.createChild(request);
}
spawnBatch(requests: SpawnRequest[]): BatchSpawnResult {
const accepted: SpawnAccepted[] = [];
const failed: Array<{ index: number; error: string }> = [];
requests.forEach((request, index) => {
try {
accepted.push(this.createChild(request));
} catch (error) {
failed.push({ index, error: error instanceof Error ? error.message : String(error) });
}
});
return { accepted, failed };
}
list(): SubagentStatus[] {
const statuses = [...this.children.values()].map((child) => cloneStatus(child.record.status));
const active = statuses.filter((status) => !isTerminal(status.state));
const terminal = statuses
.filter((status) => isTerminal(status.state))
.sort((a, b) => Date.parse(b.completedAt ?? b.startedAt) - Date.parse(a.completedAt ?? a.startedAt));
return [...active, ...terminal];
}
status(id: string): SubagentStatus {
return cloneStatus(this.require(id).record.status);
}
result(id: string): SubagentResult {
return cloneResult(this.require(id).record);
}
clearTerminal(ids?: string[]): string[] {
const selectedIds = ids ? [...new Set(ids.map((id) => id.trim()).filter(Boolean))] : undefined;
if (selectedIds) for (const id of selectedIds) this.require(id);
const cleared: string[] = [];
for (const [id, child] of this.children) {
if (selectedIds && !selectedIds.includes(id)) continue;
if (!isTerminal(child.record.status.state)) continue;
this.clearTimer(child, "expiryTimer");
cleared.push(id);
this.children.delete(id);
}
if (cleared.length > 0) this.emitChange();
return cleared;
}
async wait(
ids: string[],
options: { timeoutMs?: number; signal?: AbortSignal; mode?: SubagentWaitMode } = {},
): Promise<SubagentWaitResult> {
const uniqueIds = [...new Set(ids.map((id) => id.trim()).filter(Boolean))];
if (uniqueIds.length === 0) throw new Error("at least one subagent id is required");
for (const id of uniqueIds) this.require(id);
const startedAt = Date.now();
const mode = options.mode ?? "all";
if (mode !== "all" && mode !== "any") throw new Error(`unknown wait mode: ${mode}`);
const deadline = options.timeoutMs && options.timeoutMs > 0 ? startedAt + options.timeoutMs : undefined;
let timedOut = false;
while (!this.waitReady(uniqueIds, mode)) {
if (options.signal?.aborted) throw new Error("subagent wait aborted");
const remainingMs = deadline === undefined ? undefined : deadline - Date.now();
if (remainingMs !== undefined && remainingMs <= 0) {
timedOut = true;
break;
}
await this.nextChange(remainingMs, options.signal).catch((error) => {
if (error instanceof Error && error.message === "subagent wait timed out") timedOut = true;
else throw error;
});
if (timedOut) break;
}
const results = uniqueIds.map((id) => this.result(id));
const pending = uniqueIds
.map((id) => this.status(id))
.filter((status) => !isTerminal(status.state));
return { ids: uniqueIds, mode, ready: this.waitReady(uniqueIds, mode), results, pending, timedOut, elapsedMs: Date.now() - startedAt };
}
async cancel(id: string): Promise<SubagentStatus> {
const child = this.require(id);
if (isTerminal(child.record.status.state)) return cloneStatus(child.record.status);
await child.handle?.cancel();
this.completeWithoutResult(child, "cancelled", "cancelled");
this.pumpQueue();
return cloneStatus(child.record.status);
}
async shutdown(): Promise<void> {
await Promise.allSettled(
[...this.children.values()].map(async (child) => {
if (!isTerminal(child.record.status.state)) {
await child.handle?.cancel();
this.completeWithoutResult(child, "cancelled", "shutdown");
}
}),
);
for (const child of this.children.values()) this.clearTimer(child, "expiryTimer");
}
private createChild(request: SpawnRequest): SpawnAccepted {
const prompt = typeof request.prompt === "string" ? request.prompt.trim() : "";
if (!prompt) throw new Error("prompt is required");
const id = this.allocateId();
const now = new Date().toISOString();
const status: SubagentStatus = {
id,
label: deriveLabel(request, id),
agent: request.agent,
adHoc: !request.agent,
context: this.resolveContext(request.context),
state: "queued",
cwd: this.cwd,
model: request.model,
thinking: request.thinking,
tools: request.tools ?? "read-only",
startedAt: now,
elapsedMs: 0,
lastEvent: "queued",
lastEventAt: now,
currentActivity: { type: "queued", summary: "queued", at: now },
activityHistory: [{ type: "queued", summary: "queued", at: now }],
resultAvailable: false,
};
const child: RunningChild = { record: { status, activityEvents: [{ type: "queued", summary: "queued", at: now }] }, request: { ...request, prompt, label: status.label, context: status.context, tools: status.tools } };
this.children.set(id, child);
this.emitMilestone(child, "accepted");
this.queue.push(child);
this.pumpQueue();
return toAccepted(cloneStatus(status));
}
private pumpQueue() {
while (this.runningCount() < this.maxConcurrent()) {
const child = this.queue.shift();
if (!child) break;
if (isTerminal(child.record.status.state)) continue;
this.start(child);
}
this.emitChange();
}
private start(child: RunningChild) {
this.setState(child.record.status, "starting", "starting");
this.armStartTimer(child);
setTimeout(() => {
if (isTerminal(child.record.status.state)) return;
void this.runner
.start(child.record.status.id, child.request, this.cwd, this.eventsFor(child.record))
.then((handle) => {
child.handle = handle;
if (isTerminal(child.record.status.state)) void handle.cancel();
})
.catch((error) => {
this.fail(child.record, error instanceof Error ? error.message : String(error));
});
}, 0);
}
private eventsFor(record: ChildRecord): RunnerEvents {
return {
accepted: (childSession) => {
const child = this.findChild(record);
if (child) {
this.clearTimer(child, "startTimer");
this.armRunTimer(child);
}
if (childSession) record.status.childSession = childSession;
this.setState(record.status, "running", "prompt accepted");
},
running: (event) => {
if (!isTerminal(record.status.state)) this.setState(record.status, "running", event);
},
settling: () => {
if (!isTerminal(record.status.state)) this.setState(record.status, "settling", "agent_settled");
},
completed: (result, stopReason) => {
const now = new Date().toISOString();
const child = this.findChild(record);
if (child) this.clearTimers(child);
record.result = result;
record.status.state = "completed";
record.status.completedAt = now;
record.status.lastEvent = "completed";
record.status.lastEventAt = now;
this.recordActivity(record, "completed", now);
record.status.stopReason = stopReason;
record.status.resultAvailable = true;
if (child) {
this.armTerminalExpiry(child);
this.emitMilestone(child, "completed");
}
this.pumpQueue();
},
failed: (error) => this.fail(record, error),
};
}
private fail(record: ChildRecord, error: string) {
if (isTerminal(record.status.state)) return;
const child = this.findChild(record);
if (child) this.clearTimers(child);
const now = new Date().toISOString();
record.status.state = "failed";
record.status.completedAt = now;
record.status.lastEvent = "failed";
record.status.lastEventAt = now;
this.recordActivity(record, "failed", now);
record.status.error = error;
record.status.stopReason = "failed";
if (child) {
this.armTerminalExpiry(child);
this.emitMilestone(child, "failed");
}
this.pumpQueue();
}
private completeWithoutResult(child: RunningChild, state: "cancelled" | "timed_out", reason: string) {
if (isTerminal(child.record.status.state)) return;
this.clearTimers(child);
const now = new Date().toISOString();
child.record.status.state = state;
child.record.status.completedAt = now;
child.record.status.lastEvent = state;
child.record.status.lastEventAt = now;
this.recordActivity(child.record, state, now);
child.record.status.stopReason = reason;
this.armTerminalExpiry(child);
this.emitMilestone(child, state);
}
private armStartTimer(child: RunningChild) {
const timeout = this.options.timeouts?.startMs ?? DEFAULT_TIMEOUTS.startMs;
if (timeout <= 0) return;
child.startTimer = setTimeout(() => {
this.timeout(child, "start_timeout");
}, timeout);
}
private armRunTimer(child: RunningChild) {
const timeout = this.options.timeouts?.runMs ?? DEFAULT_TIMEOUTS.runMs;
if (timeout <= 0) return;
child.runTimer = setTimeout(() => {
this.timeout(child, "run_timeout");
}, timeout);
}
private timeout(child: RunningChild, reason: string) {
if (isTerminal(child.record.status.state)) return;
void child.handle?.cancel();
this.completeWithoutResult(child, "timed_out", reason);
this.pumpQueue();
}
private armTerminalExpiry(child: RunningChild) {
const ttl = this.options.recentTerminalTtlMs;
if (ttl === undefined || ttl <= 0) return;
this.clearTimer(child, "expiryTimer");
child.expiryTimer = setTimeout(() => {
child.expiryTimer = undefined;
const id = child.record.status.id;
if (this.children.get(id) !== child || !isTerminal(child.record.status.state)) return;
this.children.delete(id);
this.emitChange();
}, ttl);
child.expiryTimer.unref?.();
}
private clearTimers(child: RunningChild) {
this.clearTimer(child, "startTimer");
this.clearTimer(child, "runTimer");
}
private clearTimer(child: RunningChild, key: "startTimer" | "runTimer" | "expiryTimer") {
const timer = child[key];
if (!timer) return;
clearTimeout(timer);
child[key] = undefined;
}
private findChild(record: ChildRecord): RunningChild | undefined {
return [...this.children.values()].find((child) => child.record === record);
}
activity(id: string) {
return this.require(id).record.activityEvents.map((event) => ({ ...event }));
}
private setState(status: SubagentStatus, state: SubagentStatus["state"], event: RunnerActivity) {
if (isTerminal(status.state)) return;
const record = this.require(status.id).record;
const now = new Date().toISOString();
const activity = this.recordActivity(record, event, now);
status.state = state;
status.lastEvent = activity.type;
status.lastEventAt = now;
this.emitChange();
}
private recordActivity(record: ChildRecord, event: RunnerActivity, at: string) {
const activity = normalizeActivity(event, at);
record.activityEvents.push(activity);
const summary = summarizeActivity(activity);
record.status.currentActivity = summary;
record.status.activityHistory.push(summary);
if (record.status.activityHistory.length > MAX_ACTIVITY_HISTORY) {
record.status.activityHistory.splice(0, record.status.activityHistory.length - MAX_ACTIVITY_HISTORY);
}
return activity;
}
private require(id: string): RunningChild {
const child = this.children.get(id);
if (!child) throw new Error(`unknown subagent id: ${id}`);
return child;
}
private resolveContext(context: ContextMode | undefined): ContextMode {
if (context === undefined) return "independent";
if (context !== "independent" && context !== "fork") throw new Error(`unknown context: ${context}`);
return context;
}
private maxConcurrent(): number {
return Math.max(1, this.options.maxConcurrent ?? 3);
}
private runningCount(): number {
return [...this.children.values()].filter((child) => ["starting", "running", "settling"].includes(child.record.status.state)).length;
}
private emitMilestone(child: RunningChild, event: string) {
this.options.onMilestone?.(cloneStatus(child.record.status), event);
this.emitChange();
}
private emitChange() {
this.options.onChange?.(this.list());
for (const waiter of this.waiters) waiter();
}
private waitReady(ids: string[], mode: SubagentWaitMode): boolean {
const terminal = (id: string) => isTerminal(this.require(id).record.status.state);
return mode === "all" ? ids.every(terminal) : ids.some(terminal);
}
private nextChange(timeoutMs: number | undefined, signal: AbortSignal | undefined): Promise<void> {
return new Promise((resolve, reject) => {
let timer: ReturnType<typeof setTimeout> | undefined;
const cleanup = () => {
this.waiters.delete(resolveOnce);
if (timer) clearTimeout(timer);
signal?.removeEventListener("abort", abort);
};
const resolveOnce = () => {
cleanup();
resolve();
};
const abort = () => {
cleanup();
reject(new Error("subagent wait aborted"));
};
this.waiters.add(resolveOnce);
signal?.addEventListener("abort", abort, { once: true });
if (timeoutMs !== undefined) {
timer = setTimeout(() => {
cleanup();
reject(new Error("subagent wait timed out"));
}, timeoutMs);
}
});
}
private allocateId(): string {
this.nextChild += 1;
return `sg-${Date.now().toString(36)}-${this.nextChild.toString(36)}`;
}
}
function deriveLabel(request: SpawnRequest, id: string): string {
const explicit = normalizeLabel(request.label);
if (explicit) return explicit;
const agent = normalizeLabel(request.agent);
if (agent) return agent;
return promptLabel(request.prompt) ?? `ad-hoc ${id}`;
}
function promptLabel(prompt: string): string | undefined {
const normalized = normalizeLabel(prompt);
if (!normalized) return undefined;
return truncateLabel(normalized);
}
function normalizeLabel(value: unknown): string | undefined {
if (typeof value !== "string") return undefined;
const normalized = value.replace(/\s+/gu, " ").trim();
return normalized || undefined;
}
function truncateLabel(label: string): string {
const maxLength = 80;
if (label.length <= maxLength) return label;
return `${label.slice(0, maxLength - 1).trimEnd()}…`;
}
function isTerminal(state: SubagentStatus["state"]): boolean {
return isTerminalState(state);
}
function normalizeActivity(event: RunnerActivity, at: string) {
if (typeof event === "string") return { type: event, summary: event, at };
const type = typeof event.type === "string" ? event.type : "activity";
const role = typeof event.role === "string" ? event.role : undefined;
const tool = toolFromActivity(event);
const phase = typeof event.phase === "string" ? event.phase : phaseFromType(type, event);
const text = textFromActivity(event);
const input = inputFromActivity(event);
const output = "output" in event ? event.output : "result" in event ? event.result : "partialResult" in event ? event.partialResult : undefined;
const error = typeof event.error === "string" ? event.error : undefined;
return { type, summary: summaryFor({ type, role, tool, phase, input, output, error }), at, role, tool, phase, text, input, output, error, payload: { ...event } };
}
function summarizeActivity(activity: ReturnType<typeof normalizeActivity>) {
const { type, summary, at, role, tool, phase } = activity;
return { type, summary, at, role, tool, phase };
}
function toolFromActivity(event: Record<string, unknown>): string | undefined {
for (const key of ["tool", "toolName", "name"]) {
const value = event[key];
if (typeof value === "string") return value;
}
return undefined;
}
function phaseFromType(type: string, event: Record<string, unknown>): string | undefined {
const assistantEvent = event.assistantMessageEvent;
if (assistantEvent && typeof assistantEvent === "object" && !Array.isArray(assistantEvent)) {
const assistantType = (assistantEvent as { type?: unknown }).type;
if (typeof assistantType === "string") return assistantType;
}
if (type.endsWith("_start")) return "started";
if (type.endsWith("_started")) return "started";
if (type.endsWith("_update")) return "update";
if (type.endsWith("_delta")) return "delta";
if (type.endsWith("_end")) return "completed";
if (type.endsWith("_completed")) return "completed";
if (type.endsWith("_failed")) return "failed";
return undefined;
}
function textFromActivity(event: Record<string, unknown>): string | undefined {
for (const key of ["text", "body", "content", "delta"]) {
const value = event[key];
if (typeof value === "string") return value;
}
const assistantEvent = event.assistantMessageEvent;
if (assistantEvent && typeof assistantEvent === "object" && !Array.isArray(assistantEvent)) {
for (const key of ["delta", "content"]) {
const value = (assistantEvent as Record<string, unknown>)[key];
if (typeof value === "string") return value;
}
}
return undefined;
}
function inputFromActivity(event: Record<string, unknown>): unknown {
if ("input" in event) return event.input;
if ("args" in event) return event.args;
return undefined;
}
function summaryFor(activity: { type: string; role?: string; tool?: string; phase?: string; input?: unknown; output?: unknown; error?: string }): string {
if (activity.error) return `${activity.tool ?? activity.type} failed: ${activity.error}`;
if (activity.tool) return `${activity.tool}${inputHint(activity.input)}`;
if (activity.type.startsWith("message")) return `${activity.role ?? "assistant"} message${activity.phase ? ` ${activity.phase}` : ""}`;
return activity.type;
}
function inputHint(input: unknown): string {
if (!input || typeof input !== "object" || Array.isArray(input)) return "";
const path = (input as { path?: unknown }).path;
if (typeof path === "string" && path.trim()) return ` ${path.trim()}`;
const command = (input as { command?: unknown }).command;
if (typeof command === "string" && command.trim()) return ` ${truncateActivityHint(command.trim())}`;
return "";
}
function truncateActivityHint(value: string): string {
return value.length <= 80 ? value : `${value.slice(0, 79).trimEnd()}…`;
}

View File

@@ -1,123 +0,0 @@
export type ContextMode = "independent" | "fork";
export const SUBAGENT_STATES = ["queued", "starting", "running", "settling", "completed", "failed", "cancelled", "timed_out", "orphaned"] as const;
export const SUBAGENT_TERMINAL_STATES = ["completed", "failed", "cancelled", "timed_out", "orphaned"] as const;
export type SubagentState = (typeof SUBAGENT_STATES)[number];
export interface ToolProfile {
activeTools: string[] | null;
}
export interface SpawnRequest {
prompt: string;
label?: string;
context?: ContextMode;
agent?: string;
model?: string;
thinking?: string;
tools?: string;
toolProfile?: ToolProfile;
agentBody?: string;
parentSessionFile?: string;
}
export interface SpawnAccepted {
id: string;
label: string;
context: ContextMode;
tools: string;
state: SubagentState;
hint: string;
}
export interface SubagentActivitySummary {
type: string;
summary: string;
at: string;
role?: string;
tool?: string;
phase?: string;
}
export interface SubagentActivityEvent extends SubagentActivitySummary {
text?: string;
input?: unknown;
output?: unknown;
error?: string;
payload?: Record<string, unknown>;
}
export interface SubagentCurrentActivity extends SubagentActivitySummary {}
export type RunnerActivity = string | Record<string, unknown>;
export interface SubagentStatus {
id: string;
label: string;
agent?: string;
adHoc: boolean;
context: ContextMode;
state: SubagentState;
cwd: string;
model?: string;
thinking?: string;
tools: string;
startedAt: string;
completedAt?: string;
elapsedMs: number;
lastEvent?: string;
lastEventAt?: string;
currentActivity?: SubagentCurrentActivity;
activityHistory: SubagentActivitySummary[];
stopReason?: string;
resultAvailable: boolean;
childSession?: string;
error?: string;
}
export interface SubagentResult {
id: string;
label: string;
state: SubagentState;
running: boolean;
resultAvailable: boolean;
result?: string;
error?: string;
completedAt?: string;
elapsedMs: number;
}
export type SubagentWaitMode = "all" | "any";
export interface SubagentWaitResult {
ids: string[];
mode: SubagentWaitMode;
ready: boolean;
results: SubagentResult[];
pending: SubagentStatus[];
timedOut: boolean;
elapsedMs: number;
}
export interface ChildRecord {
status: SubagentStatus;
activityEvents: SubagentActivityEvent[];
result?: string;
}
export interface RunnerEvents {
accepted(childSession?: string): void;
running(event: RunnerActivity): void;
settling(): void;
completed(result: string, stopReason?: string): void;
failed(error: string): void;
}
export interface ChildHandle {
cancel(): Promise<void>;
}
export interface ChildRunner {
start(id: string, request: SpawnRequest, cwd: string, events: RunnerEvents): Promise<ChildHandle>;
}

View File

@@ -1,89 +0,0 @@
import assert from "node:assert/strict";
import test from "node:test";
import type { SubagentState, SubagentStatus } from "./types.ts";
import { renderInspector, renderSummary, widget } from "./ui.ts";
function status(overrides: Partial<SubagentStatus> & { id: string; label: string; state: SubagentState }): SubagentStatus {
return {
adHoc: true,
context: "independent",
cwd: "/tmp",
elapsedMs: 0,
activityHistory: [],
resultAvailable: false,
startedAt: "2026-08-01T00:00:00.000Z",
tools: "inherit",
...overrides,
};
}
test("compact monitor aggregates visible children by actionable lifecycle group", () => {
assert.deepEqual(renderSummary([]), []);
assert.deepEqual(
renderSummary([
status({ id: "queued", label: "Queued", state: "queued" }),
status({ id: "starting", label: "Starting", state: "starting" }),
status({ id: "running", label: "Running", state: "running" }),
status({ id: "settling", label: "Settling", state: "settling" }),
status({ id: "completed", label: "Completed", state: "completed", resultAvailable: true }),
status({ id: "failed", label: "Failed", state: "failed", error: "boom" }),
status({ id: "timed-out", label: "Timed out", state: "timed_out" }),
status({ id: "cancelled", label: "Cancelled", state: "cancelled" }),
]),
["subagents: queued 1 · running 2 · settling 1 · completed 1 · failed 1 · timed out 1 · cancelled 1"],
);
});
test("expanded monitor shows concise current activity summaries instead of raw event types", () => {
const rendered = widget([
status({
id: "sg-reading",
label: "Audit guest enablement plan",
state: "running",
elapsedMs: 12_000,
lastEvent: "message_update",
currentActivity: {
type: "message_update",
summary: "read secret-notes.md",
at: "2026-08-01T00:00:12.000Z",
},
}),
], true)().render(240);
assert.deepEqual(rendered, ["▶ running 12s Audit guest enablement plan last: read secret-notes.md"]);
assert.doesNotMatch(rendered.join("\n"), /message_update|private transcript body/u);
});
test("expanded monitor renders one truncated row per child with state, elapsed time, and activity marker", () => {
const lines = renderInspector([
status({
id: "sg-running",
label: "Audit unusually verbose guest enablement migration plan",
state: "running",
elapsedMs: 65_000,
lastEvent: "message_update",
}),
status({
id: "sg-completed",
label: "Summarize review",
state: "completed",
elapsedMs: 3_600_000,
lastEvent: "completed",
resultAvailable: true,
}),
status({ id: "sg-failed", label: "Run risky test", state: "failed", elapsedMs: 2_000, error: "exit 1" }),
]);
assert.equal(lines.length, 3);
assert.match(lines[0], /^▶ running +1m05s +Audit unusually verbose guest enablement migration plan +last: message_update$/u);
assert.equal(lines[1], "✓ completed 1h00m00s Summarize review result: available");
assert.equal(lines[2], "✗ failed 2s Run risky test error: exit 1");
const rendered = widget([
status({ id: "sg-running", label: "Audit unusually verbose guest enablement migration plan", state: "running", elapsedMs: 65_000, lastEvent: "message_update" }),
], true)().render(32);
assert.deepEqual(rendered, ["▶ running 1m05s Audit unusual…"]);
assert.ok(rendered.every((line) => line.length <= 32));
});

View File

@@ -1,81 +0,0 @@
import type { SubagentState, SubagentStatus } from "./types.ts";
const COMPACT_GROUPS: Array<{ label: string; states: SubagentState[] }> = [
{ label: "queued", states: ["queued"] },
{ label: "running", states: ["starting", "running"] },
{ label: "settling", states: ["settling"] },
{ label: "completed", states: ["completed"] },
{ label: "failed", states: ["failed"] },
{ label: "timed out", states: ["timed_out"] },
{ label: "cancelled", states: ["cancelled"] },
{ label: "orphaned", states: ["orphaned"] },
];
const STATE_PRESENTATION: Record<SubagentState, { icon: string; label: string }> = {
queued: { icon: "…", label: "queued" },
starting: { icon: "◌", label: "starting" },
running: { icon: "▶", label: "running" },
settling: { icon: "◒", label: "settling" },
completed: { icon: "✓", label: "completed" },
failed: { icon: "✗", label: "failed" },
cancelled: { icon: "■", label: "cancelled" },
timed_out: { icon: "⏱", label: "timed out" },
orphaned: { icon: "?", label: "orphaned" },
};
export function renderSummary(statuses: SubagentStatus[]): string[] {
const groups = COMPACT_GROUPS.map((group) => ({
label: group.label,
count: statuses.filter((status) => group.states.includes(status.state)).length,
})).filter((group) => group.count > 0);
if (groups.length === 0) return [];
return [`subagents: ${groups.map((group) => `${group.label} ${group.count}`).join(" · ")}`];
}
export function renderInspector(statuses: SubagentStatus[]): string[] {
return statuses.map((status) => renderStatusRow(status));
}
export function widget(statuses: SubagentStatus[], expanded: boolean) {
return () => ({
invalidate() {},
render(width: number) {
return (expanded ? renderInspector(statuses) : renderSummary(statuses)).map((line) => truncateLine(line, width));
},
});
}
function renderStatusRow(status: SubagentStatus): string {
const presentation = STATE_PRESENTATION[status.state];
const marker = statusMarker(status);
return `${presentation.icon} ${presentation.label.padEnd(9)} ${formatDuration(status.elapsedMs)} ${status.label}${marker ? ` ${marker}` : ""}`;
}
function statusMarker(status: SubagentStatus): string | undefined {
if (status.error) return `error: ${status.error}`;
if (status.resultAvailable) return "result: available";
if (status.currentActivity) return `last: ${status.currentActivity.summary}`;
if (status.lastEvent) return `last: ${status.lastEvent}`;
if (status.state === "queued") return "waiting";
if (status.state === "settling") return "settling";
return undefined;
}
function formatDuration(elapsedMs: number): string {
const totalSeconds = Math.max(0, Math.round(elapsedMs / 1000));
const hours = Math.floor(totalSeconds / 3600);
const minutes = Math.floor((totalSeconds % 3600) / 60);
const seconds = totalSeconds % 60;
if (hours > 0) return `${hours}h${String(minutes).padStart(2, "0")}m${String(seconds).padStart(2, "0")}s`;
if (minutes > 0) return `${minutes}m${String(seconds).padStart(2, "0")}s`;
return `${seconds}s`;
}
function truncateLine(line: string, width: number): string {
if (width <= 0) return "";
if (line.length <= width) return line;
if (width === 1) return "…";
return `${line.slice(0, width - 1)}…`;
}

View File

@@ -11,40 +11,6 @@ let
cfg = config.modules.agents.pi;
user = config.user.name;
piDir = "${config.users.users.${user}.home}/.pi/agent";
reservedToolProfiles = [
"none"
"read-only"
"read-only-with-safe-bash"
"full-tools"
];
subagentsConfig =
lib.optionalAttrs (cfg.subagents.defaultContext != null) {
defaultContext = cfg.subagents.defaultContext;
}
// lib.optionalAttrs (cfg.subagents.defaultTools != null) {
defaultTools = cfg.subagents.defaultTools;
}
// lib.optionalAttrs (cfg.subagents.maxConcurrent != null) {
maxConcurrent = cfg.subagents.maxConcurrent;
}
// lib.optionalAttrs (cfg.subagents.recentTerminalTtlMs != null) {
recentTerminalTtlMs = cfg.subagents.recentTerminalTtlMs;
}
// lib.optionalAttrs (
cfg.subagents.ui.enabled != null || cfg.subagents.ui.defaultExpanded != null
) {
ui =
lib.optionalAttrs (cfg.subagents.ui.enabled != null) {
enabled = cfg.subagents.ui.enabled;
}
// lib.optionalAttrs (cfg.subagents.ui.defaultExpanded != null) {
defaultExpanded = cfg.subagents.ui.defaultExpanded;
};
}
// lib.optionalAttrs (cfg.subagents.toolProfiles != { }) {
toolProfiles = cfg.subagents.toolProfiles;
};
subagentsJson = (pkgs.formats.json { }).generate "pi-subagents.json" subagentsConfig;
patchedPi = pkgs.pi-coding-agent.overrideAttrs (old: {
patches = (old.patches or [ ]) ++ [
./patches/pi-flex-spacer.patch
@@ -76,109 +42,9 @@ in
options.modules.agents.pi = {
enable = lib.mkEnableOption ''
Pi, a terminal coding agent, configured via home-manager'';
subagents = {
defaultContext = lib.mkOption {
type = lib.types.nullOr (lib.types.enum [
"independent"
"fork"
]);
default = null;
description = ''
Default context mode for subagents.
Left null, the extension keeps its in-code default.
'';
};
defaultTools = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
example = "read-only-with-safe-bash";
description = ''
Default tool profile for subagents.
Left null, the extension keeps its in-code default.
'';
};
maxConcurrent = lib.mkOption {
type = lib.types.nullOr lib.types.ints.positive;
default = null;
example = 4;
description = ''
Maximum number of child processes allowed to run concurrently.
Left null, the extension keeps its in-code default.
'';
};
recentTerminalTtlMs = lib.mkOption {
type = lib.types.nullOr lib.types.ints.unsigned;
default = null;
example = 600000;
description = ''
Milliseconds to retain terminal subagents in the recent work set.
Zero disables time-based retention.
Left null, the extension keeps its in-code default.
'';
};
ui = {
enabled = lib.mkOption {
type = lib.types.nullOr lib.types.bool;
default = null;
description = ''
Whether the extension renders its built-in subagent monitor.
Left null, the extension keeps its in-code default.
'';
};
defaultExpanded = lib.mkOption {
type = lib.types.nullOr lib.types.bool;
default = null;
description = ''
Whether the built-in subagent monitor starts expanded.
Left null, the extension keeps its in-code default.
'';
};
};
toolProfiles = lib.mkOption {
type = lib.types.attrsOf (
lib.types.submodule {
options.activeTools = lib.mkOption {
type = lib.types.listOf lib.types.str;
description = "Pi tools made available to a child using this profile.";
};
}
);
default = { };
example = {
review = {
activeTools = [
"read"
"grep"
"find"
"ls"
];
};
};
description = ''
Custom named tool profiles for subagents.
The extension's reserved built-in profile names cannot be redefined.
'';
};
};
};
config = lib.mkIf cfg.enable {
assertions = [
{
assertion = lib.intersectLists reservedToolProfiles (
builtins.attrNames cfg.subagents.toolProfiles
) == [ ];
message = "modules.agents.pi.subagents.toolProfiles may not redefine the reserved profiles: ${lib.concatStringsSep ", " reservedToolProfiles}.";
}
];
home-manager.users.${user} = {
programs.pi-coding-agent = {
enable = true;
@@ -209,13 +75,6 @@ in
source = ./prompts;
recursive = true;
};
}
// lib.optionalAttrs (subagentsConfig != { }) {
# Declaring any global override makes Nix the owner of the runtime file.
"${piDir}/subagents.json" = {
source = subagentsJson;
force = true;
};
};
};
};