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Author SHA1 Message Date
Jason WoltjeandClaude Fable 5 b79708fdc7 ci: provision Pi runtime 0.84.1 in the test step (Invariant R)
ci/woodpecker/pr/ci Pipeline was successful
invariant_r_unittest.py (landing with the lease-remediation stack, PR
#1109) hard-requires an installed `pi` binary pinned to the measured
version: it boots Pi's real tool registry and proves the broker's
read-only carve-out resolves to real, unshadowed builtins. Absent
runtime fails loud by design — so CI must provide it.

Install @earendil-works/[email protected].1 (the canonical Pi;
@mariozechner/* is embedded-legacy) at step level in the test step.
Step-level rather than baked into Dockerfile.ci because ci-image
publishes are currently blocked on registry UNAUTHORIZED; baking it in
is the follow-up once registry auth is fixed, at which point this line
degrades to a fast no-op guard like the openssl line above it.

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Dtdjx4Gxude9fwyLezCrhh
2026-08-11 20:16:32 -05:00
35 changed files with 36 additions and 4090 deletions
+10
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@@ -109,6 +109,16 @@ steps:
# `apk add` guarantees openssl is present on PR pipelines too (and is a
# fast no-op once the rebuilt image already ships it).
- apk add --no-cache openssl
# Pi runtime (Invariant R): invariant_r_unittest.py hard-requires an
# installed `pi` binary at exactly this measured version — the test
# boots Pi's real tool registry to prove the read-only carve-out
# resolves to real, unshadowed builtins, and fails loud (by design)
# when the runtime is absent or drifts. The canonical Pi is
# @earendil-works/[email protected] exactly (@mariozechner/* is
# embedded-legacy). Step-level install because ci-base image publishes
# are currently blocked on registry auth; fold into Dockerfile.ci once
# that is fixed, keeping this as a fast no-op guard.
- npm install -g @earendil-works/[email protected]
# postgresql-client (pg_isready) is baked into ci-base.
# Wait up to 60s for CI postgres to be ready; fail fast if it never comes up.
- |
-2
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@@ -21,7 +21,6 @@ import { AdminModule } from './admin/admin.module.js';
import { CommandsModule } from './commands/commands.module.js';
import { PreferencesModule } from './preferences/preferences.module.js';
import { GCModule } from './gc/gc.module.js';
import { HarnessModule } from './harness/harness.module.js';
import { ReloadModule } from './reload/reload.module.js';
import { WorkspaceModule } from './workspace/workspace.module.js';
import { QueueModule } from './queue/queue.module.js';
@@ -61,7 +60,6 @@ const federationEnabled = loadConfig(resolveGatewayConfigPath()).tier === 'feder
PreferencesModule,
CommandsModule,
GCModule,
HarnessModule,
QueueModule,
ReloadModule,
WorkspaceModule,
@@ -1,19 +0,0 @@
import 'reflect-metadata';
import { Test } from '@nestjs/testing';
import { describe, expect, it } from 'vitest';
import { CoordModule } from './coord.module.js';
import { InteractionCoordinationService } from './interaction-coordination.service.js';
import { AuthGuard } from '../auth/auth.guard.js';
describe('CoordModule DI (compiled-metadata boot)', () => {
it('resolves InteractionCoordinationService through Nest DI', async () => {
const moduleRef = await Test.createTestingModule({ imports: [CoordModule] })
.overrideGuard(AuthGuard)
.useValue({ canActivate: (): boolean => true })
.compile();
expect(moduleRef.get(InteractionCoordinationService)).toBeInstanceOf(
InteractionCoordinationService,
);
await moduleRef.close();
});
});
@@ -1,4 +1,4 @@
import { Inject, Injectable, Optional } from '@nestjs/common';
import { Inject, Injectable } from '@nestjs/common';
import {
InteractionCoordinationClient,
type CoordinationObservation,
@@ -13,7 +13,6 @@ import type { CreateHandoffDto } from './interaction-coordination.dto.js';
export const COORDINATION_PORT = Symbol('COORDINATION_PORT');
export const COORDINATION_CONFIG = Symbol('COORDINATION_CONFIG');
export const HANDOFF_ID_FACTORY = Symbol('HANDOFF_ID_FACTORY');
const HANDOFF_TRACKING_TTL_MS = 60 * 60 * 1_000;
const MAX_TRACKED_HANDOFFS = 1_000;
@@ -61,8 +60,6 @@ export class InteractionCoordinationService {
constructor(
@Inject(COORDINATION_PORT) private readonly port: InteractionCoordinationPort,
@Inject(COORDINATION_CONFIG) private readonly config: InteractionCoordinationConfig,
@Optional()
@Inject(HANDOFF_ID_FACTORY)
private readonly handoffIdFactory: () => string = (): string => crypto.randomUUID(),
) {}
@@ -1,164 +0,0 @@
import 'reflect-metadata';
import {
type CanActivate,
type ExecutionContext,
type INestApplication,
ValidationPipe,
} from '@nestjs/common';
import { FastifyAdapter, type NestFastifyApplication } from '@nestjs/platform-fastify';
import { Test } from '@nestjs/testing';
import request from 'supertest';
import { afterAll, beforeAll, beforeEach, describe, expect, it } from 'vitest';
import { AuthGuard } from '../auth/auth.guard.js';
import { HarnessRegistry } from './harness.registry.js';
import { HARNESS_REGISTRY } from './harness.tokens.js';
import { HarnessSelectionRepository } from './harness-selection.repository.js';
import { FakeHarnessAdapter } from './testing/fake-harness.adapter.js';
// Import the REAL module (not a hand-listed controllers+mocks list) so an
// unresolved provider fails at app.init() — the #1145-class DI-boot guard.
import { HarnessModule } from './harness.module.js';
// A known-available tuple from the fake adapter's default catalog.
const VALID = { harnessId: 'fake', providerId: 'fake-openai', modelId: 'fake-mini' };
// A tuple whose provider/model are not in any catalog.
const UNKNOWN = { harnessId: 'fake', providerId: 'ghost-provider', modelId: 'ghost-model' };
// A tuple that is known in the catalog but flagged unavailable.
const UNAVAILABLE = { harnessId: 'fake', providerId: 'fake-openai', modelId: 'fake-legacy' };
const authGuard: CanActivate = {
canActivate(context: ExecutionContext): boolean {
const requestContext = context.switchToHttp().getRequest<{ user?: { id: string } }>();
requestContext.user = { id: 'user-1' };
return true;
},
};
function registryWithFake(): HarnessRegistry {
const registry = new HarnessRegistry();
registry.register(new FakeHarnessAdapter({ id: 'fake' }));
return registry;
}
describe('Harness selection HTTP surface', () => {
let app: INestApplication;
let repository: HarnessSelectionRepository;
beforeAll(async () => {
const moduleRef = await Test.createTestingModule({
imports: [HarnessModule],
})
.overrideGuard(AuthGuard)
.useValue(authGuard)
.overrideProvider(HARNESS_REGISTRY)
.useValue(registryWithFake())
.compile();
// Real in-memory repository from the module graph — proves the module wired it.
repository = moduleRef.get(HarnessSelectionRepository);
app = moduleRef.createNestApplication<NestFastifyApplication>(new FastifyAdapter());
app.useGlobalPipes(
new ValidationPipe({ whitelist: true, forbidNonWhitelisted: true, transform: true }),
);
await app.init();
await app.getHttpAdapter().getInstance().ready();
});
beforeEach(() => {
// Reset owner-scoped state between tests via the public API surface.
repository.set({ userId: 'user-1', tenantId: 'user-1' }, VALID);
});
afterAll(async () => {
await app.close();
});
it('GET selection is server-scoped and ignores caller-supplied scope in the query', async () => {
const response = await request(app.getHttpServer())
.get('/api/chat/preferences/selection')
.query({ userId: 'attacker', tenantId: 'attacker-tenant', seatId: 'attacker-seat' });
expect(response.status).toBe(200);
// The returned selection is user-1's (guard-derived scope), not the query's.
expect(response.body.selection).toEqual(VALID);
});
it('PUT with a valid structured tuple persists and round-trips via GET', async () => {
const next = { harnessId: 'fake', providerId: 'fake-openai', modelId: 'fake-pro' };
const put = await request(app.getHttpServer())
.put('/api/chat/preferences/selection')
.send(next)
.set('Content-Type', 'application/json');
expect(put.status).toBe(200);
expect(put.body.selection).toEqual(next);
const get = await request(app.getHttpServer()).get('/api/chat/preferences/selection');
expect(get.status).toBe(200);
expect(get.body.selection).toEqual(next);
});
it('PUT with FREE TEXT is rejected 400 and does not mutate the stored selection', async () => {
const response = await request(app.getHttpServer())
.put('/api/chat/preferences/selection')
.send({ selection: 'gpt-4o' })
.set('Content-Type', 'application/json');
expect(response.status).toBe(400);
const get = await request(app.getHttpServer()).get('/api/chat/preferences/selection');
expect(get.body.selection).toEqual(VALID);
});
it.each([
['seatId', { ...VALID, seatId: 'attacker-seat' }],
['tenantId', { ...VALID, tenantId: 'attacker-tenant' }],
['userId', { ...VALID, userId: 'attacker' }],
['nativeSessionPath', { ...VALID, nativeSessionPath: '/var/native/x.jsonl' }],
['executable', { ...VALID, executable: '/usr/bin/evil' }],
['home', { ...VALID, home: '/home/attacker' }],
['cwd', { ...VALID, cwd: '/tmp/attacker' }],
])(
'PUT with an extra authority-bearing field (%s) is rejected 400 and does not mutate stored selection',
async (_name, body) => {
const response = await request(app.getHttpServer())
.put('/api/chat/preferences/selection')
.send(body)
.set('Content-Type', 'application/json');
expect(response.status).toBe(400);
const get = await request(app.getHttpServer()).get('/api/chat/preferences/selection');
expect(get.body.selection).toEqual(VALID);
},
);
it('PUT with an UNKNOWN tuple returns selection_invalid, unchanged and echoed unchanged (no fallback)', async () => {
const response = await request(app.getHttpServer())
.put('/api/chat/preferences/selection')
.send(UNKNOWN)
.set('Content-Type', 'application/json');
expect(response.status).toBe(422);
expect(response.body.code).toBe('selection_invalid');
// Echoed back unchanged: no first-row / first-provider substitution.
expect(response.body.selection).toEqual(UNKNOWN);
const get = await request(app.getHttpServer()).get('/api/chat/preferences/selection');
expect(get.body.selection).toEqual(VALID);
});
it('PUT with a KNOWN-but-UNAVAILABLE tuple returns model_unavailable, unchanged (distinct from selection_invalid)', async () => {
const response = await request(app.getHttpServer())
.put('/api/chat/preferences/selection')
.send(UNAVAILABLE)
.set('Content-Type', 'application/json');
expect(response.status).toBe(422);
expect(response.body.code).toBe('model_unavailable');
expect(response.body.selection).toEqual(UNAVAILABLE);
const get = await request(app.getHttpServer()).get('/api/chat/preferences/selection');
expect(get.body.selection).toEqual(VALID);
});
});
@@ -1,46 +0,0 @@
import { Body, Controller, Get, HttpException, HttpStatus, Put, UseGuards } from '@nestjs/common';
import { AuthGuard } from '../auth/auth.guard.js';
import { CurrentUser } from '../auth/current-user.decorator.js';
import { scopeFromUser, type AuthenticatedUserLike } from '../auth/session-scope.js';
import { HarnessOperationError } from './harness.registry.js';
import { HarnessSelectionService } from './harness-selection.service.js';
import { HarnessSelectionInputDto, type SelectionResponseDto } from './harness.dto.js';
/**
* Chat-preferences selection surface. The scope is ALWAYS derived on the server
* from the authenticated user (`scopeFromUser(CurrentUser)`); the request body and
* query string can never name another user, tenant, or seat. A typed selection
* failure (unknown tuple → `selection_invalid`, known-but-unavailable →
* `model_unavailable`) is returned as 422 with the requested tuple echoed back
* unchanged, and never mutates the stored selection.
*/
@Controller('api/chat/preferences/selection')
@UseGuards(AuthGuard)
export class HarnessSelectionController {
constructor(private readonly selection: HarnessSelectionService) {}
@Get()
get(@CurrentUser() user: AuthenticatedUserLike): SelectionResponseDto {
return { selection: this.selection.getSelection(scopeFromUser(user)) };
}
@Put()
async put(
@CurrentUser() user: AuthenticatedUserLike,
@Body() dto: HarnessSelectionInputDto,
): Promise<SelectionResponseDto> {
try {
const stored = await this.selection.setSelection(scopeFromUser(user), {
harnessId: dto.harnessId,
providerId: dto.providerId,
modelId: dto.modelId,
});
return { selection: stored };
} catch (error) {
if (error instanceof HarnessOperationError) {
throw new HttpException(error.dto, HttpStatus.UNPROCESSABLE_ENTITY);
}
throw error;
}
}
}
@@ -1,90 +0,0 @@
import { randomUUID } from 'node:crypto';
import { Inject, Injectable } from '@nestjs/common';
import type { HarnessSelection } from '@mosaicstack/types';
import type { ActorTenantScope } from '../auth/session-scope.js';
import {
HarnessAdapterUnavailableError,
HarnessRegistry,
operationError,
} from './harness.registry.js';
import { HARNESS_REGISTRY } from './harness.tokens.js';
import { readContextFromScope } from './harness.dto.js';
import { HarnessSelectionRepository } from './harness-selection.repository.js';
/**
* Selection logic for the Slice-Zero chat-preferences surface. It validates the
* requested harness/provider/model tuple against the live catalog with NO
* fallback substitution, then persists it owner-scoped. The stored selection is
* only ever mutated when the tuple is valid AND available.
*/
@Injectable()
export class HarnessSelectionService {
constructor(
@Inject(HARNESS_REGISTRY) private readonly registry: HarnessRegistry,
private readonly repository: HarnessSelectionRepository,
) {}
getSelection(scope: ActorTenantScope): HarnessSelection | null {
return this.repository.get(scope);
}
async setSelection(
scope: ActorTenantScope,
selection: HarnessSelection,
): Promise<HarnessSelection> {
// Throws HarnessOperationError (selection_invalid / model_unavailable) with the
// requested tuple echoed back unchanged. The store is untouched on any throw.
await this.assertSelectionAvailable(scope, selection);
return this.repository.set(scope, selection);
}
private async assertSelectionAvailable(
scope: ActorTenantScope,
selection: HarnessSelection,
): Promise<void> {
const correlationId = randomUUID();
let adapter;
try {
adapter = this.registry.get(selection.harnessId);
} catch (error) {
if (error instanceof HarnessAdapterUnavailableError) {
// An unknown harness makes the whole tuple invalid — no fallback adapter.
throw operationError(
'selection_invalid',
'The requested harness/provider/model tuple is not in the catalog.',
selection,
correlationId,
);
}
throw error;
}
const catalog = await adapter.catalog(readContextFromScope(scope));
const entry = catalog.models.find(
(candidate) =>
candidate.harnessId === selection.harnessId &&
candidate.providerId === selection.providerId &&
candidate.modelId === selection.modelId,
);
if (!entry) {
// No first-row / first-provider fallback: reject the requested tuple unchanged.
throw operationError(
'selection_invalid',
'The requested harness/provider/model tuple is not in the catalog.',
selection,
correlationId,
);
}
if (entry.availability === 'unavailable') {
throw operationError(
'model_unavailable',
'The requested model is currently unavailable.',
selection,
correlationId,
true,
);
}
}
}
@@ -1,138 +0,0 @@
import 'reflect-metadata';
import {
type CanActivate,
type ExecutionContext,
type INestApplication,
ValidationPipe,
} from '@nestjs/common';
import { FastifyAdapter, type NestFastifyApplication } from '@nestjs/platform-fastify';
import { Test } from '@nestjs/testing';
import request from 'supertest';
import { afterAll, beforeAll, describe, expect, it } from 'vitest';
import { AuthGuard } from '../auth/auth.guard.js';
import { HarnessRegistry } from './harness.registry.js';
import { HARNESS_REGISTRY } from './harness.tokens.js';
import { FakeHarnessAdapter } from './testing/fake-harness.adapter.js';
// The real module under test — importing it (not a hand-listed controllers/mocks
// list) is what makes an unresolved provider fail loudly at app.init() (#1145 guard).
import { HarnessModule } from './harness.module.js';
// Fields that must NEVER surface on a browser-facing catalog/list response.
const FORBIDDEN_KEYS = [
'executable',
'executablePath',
'home',
'homeDir',
'cwd',
'workingDir',
'workingDirectory',
'nativeSessionPath',
'sessionPath',
'env',
'secret',
'secrets',
'token',
'apiKey',
];
function assertNoForbiddenLeak(payload: unknown): void {
const serialized = JSON.stringify(payload).toLowerCase();
for (const key of FORBIDDEN_KEYS) {
expect(serialized).not.toContain(key.toLowerCase());
}
}
const authGuard: CanActivate = {
canActivate(context: ExecutionContext): boolean {
const requestContext = context.switchToHttp().getRequest<{ user?: { id: string } }>();
requestContext.user = { id: 'user-1' };
return true;
},
};
function registryWithFake(): HarnessRegistry {
const registry = new HarnessRegistry();
registry.register(new FakeHarnessAdapter({ id: 'fake' }));
return registry;
}
describe('Harness catalog HTTP surface', () => {
let app: INestApplication;
beforeAll(async () => {
const moduleRef = await Test.createTestingModule({
imports: [HarnessModule],
})
.overrideGuard(AuthGuard)
.useValue(authGuard)
.overrideProvider(HARNESS_REGISTRY)
.useValue(registryWithFake())
.compile();
app = moduleRef.createNestApplication<NestFastifyApplication>(new FastifyAdapter());
app.useGlobalPipes(
new ValidationPipe({ whitelist: true, forbidNonWhitelisted: true, transform: true }),
);
await app.init();
await app.getHttpAdapter().getInstance().ready();
});
afterAll(async () => {
await app.close();
});
it('boots the real HarnessModule so all providers resolve at app.init()', () => {
// If HarnessModule failed to resolve a provider, beforeAll's app.init() would
// have thrown and this suite would never reach here.
expect(app).toBeDefined();
});
it('GET /api/harnesses returns 200 with safe fields only', async () => {
const response = await request(app.getHttpServer()).get('/api/harnesses');
expect(response.status).toBe(200);
expect(Array.isArray(response.body)).toBe(true);
expect(response.body.length).toBeGreaterThan(0);
const summary = response.body[0];
expect(Object.keys(summary).sort()).toEqual(['capabilities', 'displayName', 'id']);
expect(summary.id).toBe('fake');
expect(typeof summary.displayName).toBe('string');
expect(Array.isArray(summary.capabilities)).toBe(true);
assertNoForbiddenLeak(response.body);
});
it('GET /api/harnesses/:harnessId/catalog returns 200 with safe catalog fields only', async () => {
const response = await request(app.getHttpServer()).get('/api/harnesses/fake/catalog');
expect(response.status).toBe(200);
expect(response.body.harnessId).toBe('fake');
expect(typeof response.body.version).toBe('string');
expect(typeof response.body.fingerprint).toBe('string');
expect(Array.isArray(response.body.models)).toBe(true);
expect(response.body.models.length).toBeGreaterThan(0);
const entry = response.body.models[0];
// Whitelisted catalog-entry fields only (no executables/paths/secrets).
expect(Object.keys(entry).sort()).toEqual(
[
'authState',
'availability',
'displayName',
'harnessId',
'inputTypes',
'modelId',
'providerId',
'reasoningCapability',
].sort(),
);
assertNoForbiddenLeak(response.body);
});
it('GET catalog for an unknown harnessId returns a typed adapter_unavailable error, never a fallback catalog', async () => {
const response = await request(app.getHttpServer()).get('/api/harnesses/ghost-harness/catalog');
expect(response.status).toBe(404);
expect(response.body.code).toBe('adapter_unavailable');
// A fallback catalog would carry a models array; a typed error must not.
expect(response.body.models).toBeUndefined();
});
});
@@ -1,65 +0,0 @@
import {
Controller,
Get,
HttpException,
HttpStatus,
Inject,
Param,
UseGuards,
} from '@nestjs/common';
import { AuthGuard } from '../auth/auth.guard.js';
import { CurrentUser } from '../auth/current-user.decorator.js';
import { scopeFromUser, type AuthenticatedUserLike } from '../auth/session-scope.js';
import { HarnessAdapterUnavailableError, HarnessRegistry } from './harness.registry.js';
import { HARNESS_REGISTRY } from './harness.tokens.js';
import {
readContextFromScope,
toHarnessSummary,
toSafeCatalog,
type HarnessCatalogDto,
type HarnessSummaryDto,
} from './harness.dto.js';
/**
* Generic harness catalog surface. It exposes only harness-neutral, browser-safe
* fields (identity, capabilities, provider/model catalog) — never executables,
* native paths, home/cwd, env, or secrets. There is NO provider-probe route here;
* `/api/providers` and `POST /api/providers/test` are intentionally out of scope.
*/
@Controller('api/harnesses')
@UseGuards(AuthGuard)
export class HarnessController {
constructor(@Inject(HARNESS_REGISTRY) private readonly registry: HarnessRegistry) {}
@Get()
async list(@CurrentUser() user: AuthenticatedUserLike): Promise<HarnessSummaryDto[]> {
const context = readContextFromScope(scopeFromUser(user));
const summaries: HarnessSummaryDto[] = [];
for (const adapter of this.registry.list()) {
summaries.push(toHarnessSummary(await adapter.describe(context)));
}
return summaries;
}
@Get(':harnessId/catalog')
async catalog(
@CurrentUser() user: AuthenticatedUserLike,
@Param('harnessId') harnessId: string,
): Promise<HarnessCatalogDto> {
const context = readContextFromScope(scopeFromUser(user));
let adapter;
try {
adapter = this.registry.get(harnessId);
} catch (error) {
if (error instanceof HarnessAdapterUnavailableError) {
// Typed failure — NEVER a fallback catalog for an unknown harness id.
throw new HttpException(
{ code: error.code, message: error.message, harnessId },
HttpStatus.NOT_FOUND,
);
}
throw error;
}
return toSafeCatalog(await adapter.catalog(context));
}
}
-116
View File
@@ -1,116 +0,0 @@
import { randomUUID } from 'node:crypto';
import { IsNotEmpty, IsString } from 'class-validator';
import type {
HarnessActorContext,
HarnessAuthState,
HarnessCapability,
HarnessCatalog,
HarnessCatalogEntry,
HarnessDescriptor,
HarnessInputType,
HarnessModelAvailability,
HarnessSelection,
} from '@mosaicstack/types';
import type { ActorTenantScope } from '../auth/session-scope.js';
/**
* Structured selection tuple accepted on `PUT /api/chat/preferences/selection`.
*
* The body is a STRUCTURED tuple (harness + provider + model), never a free-text
* model string. With `ValidationPipe({ whitelist: true, forbidNonWhitelisted: true })`
* any extra property — including smuggled server-authority fields such as
* `seatId`, `tenantId`, `userId`, `nativeSessionPath`, `executable`, `home`, `cwd` —
* is rejected with 400. There is deliberately no field through which a caller can
* name a scope; scope is derived on the server from the authenticated session.
*/
export class HarnessSelectionInputDto {
@IsString()
@IsNotEmpty()
harnessId!: string;
@IsString()
@IsNotEmpty()
providerId!: string;
@IsString()
@IsNotEmpty()
modelId!: string;
}
/** Browser-safe harness summary — identity and capabilities only. */
export interface HarnessSummaryDto {
readonly id: string;
readonly displayName: string;
readonly capabilities: readonly HarnessCapability[];
}
/** Browser-safe catalog entry — no executables, paths, secrets, or env. */
export interface HarnessCatalogEntryDto {
readonly harnessId: string;
readonly providerId: string;
readonly modelId: string;
readonly displayName: string;
readonly reasoningCapability: boolean;
readonly inputTypes: readonly HarnessInputType[];
readonly authState: HarnessAuthState;
readonly availability: HarnessModelAvailability;
}
/** Browser-safe catalog envelope. */
export interface HarnessCatalogDto {
readonly harnessId: string;
readonly version: string;
readonly fingerprint: string;
readonly models: readonly HarnessCatalogEntryDto[];
}
/** Response envelope for the caller's current selection (null when unset). */
export interface SelectionResponseDto {
readonly selection: HarnessSelection | null;
}
/**
* Derive a server-trusted {@link HarnessActorContext} for read operations from the
* session-derived {@link ActorTenantScope}. All authority originates on the server;
* nothing here is caller-supplied. A fresh correlation id is minted per call.
*/
export function readContextFromScope(scope: ActorTenantScope): HarnessActorContext {
return {
actorId: scope.userId,
tenantId: scope.tenantId,
seatId: scope.userId,
correlationId: randomUUID(),
};
}
/** Project a descriptor onto the browser-safe summary shape (whitelist by construction). */
export function toHarnessSummary(descriptor: HarnessDescriptor): HarnessSummaryDto {
return {
id: descriptor.id,
displayName: descriptor.displayName,
capabilities: [...descriptor.capabilities],
};
}
/** Project a catalog onto the browser-safe shape (whitelist by construction). */
export function toSafeCatalog(catalog: HarnessCatalog): HarnessCatalogDto {
return {
harnessId: catalog.harnessId,
version: catalog.version,
fingerprint: catalog.fingerprint,
models: catalog.models.map(toSafeCatalogEntry),
};
}
function toSafeCatalogEntry(entry: HarnessCatalogEntry): HarnessCatalogEntryDto {
return {
harnessId: entry.harnessId,
providerId: entry.providerId,
modelId: entry.modelId,
displayName: entry.displayName,
reasoningCapability: entry.reasoningCapability,
inputTypes: [...entry.inputTypes],
authState: entry.authState,
availability: entry.availability,
};
}
@@ -1,28 +0,0 @@
import { Module } from '@nestjs/common';
import { HarnessRegistry } from './harness.registry.js';
import { HarnessService } from './harness.service.js';
import { HARNESS_REGISTRY, HARNESS_SERVICE } from './harness.tokens.js';
import { HarnessController } from './harness.controller.js';
import { HarnessSelectionController } from './harness-selection.controller.js';
import { HarnessSelectionService } from './harness-selection.service.js';
import { HarnessSelectionRepository } from './harness-selection.repository.js';
/**
* Wires the harness-neutral registry/service (Task Two) together with the
* Slice-Zero catalog and selection HTTP surfaces (Task Three).
*
* The registry is provided empty here; real harness adapters are registered in a
* later task. Because the controllers/services resolve their collaborators through
* this real module graph, an unresolved provider fails loudly at `app.init()`.
*/
@Module({
controllers: [HarnessController, HarnessSelectionController],
providers: [
{ provide: HARNESS_REGISTRY, useFactory: () => new HarnessRegistry() },
{ provide: HARNESS_SERVICE, useClass: HarnessService },
HarnessSelectionRepository,
HarnessSelectionService,
],
exports: [HARNESS_REGISTRY, HARNESS_SERVICE],
})
export class HarnessModule {}
@@ -1,69 +0,0 @@
import { describe, expect, it } from 'vitest';
import {
HarnessAdapterUnavailableError,
HarnessRegistrationError,
HarnessRegistry,
} from './harness.registry.js';
import { FakeHarnessAdapter } from './testing/fake-harness.adapter.js';
describe('HarnessRegistry', () => {
it('registers and looks up an adapter by harness id', () => {
const registry = new HarnessRegistry();
const adapter = new FakeHarnessAdapter({ id: 'fake' });
registry.register(adapter);
expect(registry.get('fake')).toBe(adapter);
expect(registry.has('fake')).toBe(true);
expect(registry.list().map((entry) => entry.id)).toEqual(['fake']);
});
it('rejects a blank adapter id', () => {
const registry = new HarnessRegistry();
let error: unknown;
try {
registry.register(new FakeHarnessAdapter({ id: ' ' }));
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessRegistrationError);
expect((error as HarnessRegistrationError).reason).toBe('blank_id');
expect(registry.list()).toEqual([]);
});
it('rejects a duplicate adapter id', () => {
const registry = new HarnessRegistry();
registry.register(new FakeHarnessAdapter({ id: 'fake' }));
let error: unknown;
try {
registry.register(new FakeHarnessAdapter({ id: 'fake' }));
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessRegistrationError);
expect((error as HarnessRegistrationError).reason).toBe('duplicate_id');
expect((error as HarnessRegistrationError).harnessId).toBe('fake');
// The original registration is untouched.
expect(registry.list()).toHaveLength(1);
});
it('returns adapter_unavailable for an unknown harness id', () => {
const registry = new HarnessRegistry();
let error: unknown;
try {
registry.get('missing');
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessAdapterUnavailableError);
expect((error as HarnessAdapterUnavailableError).code).toBe('adapter_unavailable');
expect((error as HarnessAdapterUnavailableError).harnessId).toBe('missing');
expect(registry.has('missing')).toBe(false);
});
});
@@ -1,100 +0,0 @@
import { Injectable } from '@nestjs/common';
import type {
HarnessAdapter,
HarnessErrorCode,
HarnessErrorDto,
HarnessSelection,
} from '@mosaicstack/types';
/**
* A typed harness operation failure that carries a fully-formed, browser-safe
* {@link HarnessErrorDto}. The DTO's `selection` is always the exact requested
* tuple — there is no field through which a substituted "effective" selection
* could ever be reported.
*/
export class HarnessOperationError extends Error {
readonly code: HarnessErrorCode;
readonly dto: HarnessErrorDto;
constructor(dto: HarnessErrorDto) {
super(dto.message);
this.name = 'HarnessOperationError';
this.code = dto.code;
this.dto = dto;
}
}
/** Build a {@link HarnessOperationError} that echoes the requested selection unchanged. */
export function operationError(
code: HarnessErrorCode,
message: string,
selection: HarnessSelection,
correlationId: string,
retryable = false,
): HarnessOperationError {
return new HarnessOperationError({ code, message, retryable, correlationId, selection });
}
/** Raised when an unknown harness id is looked up. Discriminated by `code`. */
export class HarnessAdapterUnavailableError extends Error {
readonly code = 'adapter_unavailable' as const satisfies HarnessErrorCode;
constructor(readonly harnessId: string) {
super(`No harness adapter is registered for id "${harnessId}".`);
this.name = 'HarnessAdapterUnavailableError';
}
}
export type HarnessRegistrationFailure = 'blank_id' | 'duplicate_id';
/** Raised when an adapter cannot be registered (blank or duplicate id). */
export class HarnessRegistrationError extends Error {
constructor(
readonly reason: HarnessRegistrationFailure,
readonly harnessId: string,
) {
super(
reason === 'blank_id'
? 'A harness adapter id must be a non-empty string.'
: `A harness adapter is already registered for id "${harnessId}".`,
);
this.name = 'HarnessRegistrationError';
}
}
/**
* Harness-neutral adapter registry. Adapters are keyed by their harness id.
* Registration rejects blank and duplicate ids; lookup of an unknown id fails
* with {@link HarnessAdapterUnavailableError} (`adapter_unavailable`).
*/
@Injectable()
export class HarnessRegistry {
private readonly adapters = new Map<string, HarnessAdapter>();
register(adapter: HarnessAdapter): void {
const id = adapter.id;
if (typeof id !== 'string' || id.trim().length === 0) {
throw new HarnessRegistrationError('blank_id', id ?? '');
}
if (this.adapters.has(id)) {
throw new HarnessRegistrationError('duplicate_id', id);
}
this.adapters.set(id, adapter);
}
get(harnessId: string): HarnessAdapter {
const adapter = this.adapters.get(harnessId);
if (!adapter) {
throw new HarnessAdapterUnavailableError(harnessId);
}
return adapter;
}
has(harnessId: string): boolean {
return this.adapters.has(harnessId);
}
list(): readonly HarnessAdapter[] {
return [...this.adapters.values()];
}
}
@@ -1,227 +0,0 @@
import { describe, expect, it } from 'vitest';
import type { HarnessActorContext, HarnessCapability, HarnessSelection } from '@mosaicstack/types';
import { HARNESS_CAPABILITIES } from '@mosaicstack/types';
import { HarnessOperationError, HarnessRegistry } from './harness.registry.js';
import {
HarnessScopeViolationError,
HarnessService,
type TrustedGatewayScope,
} from './harness.service.js';
import { FakeHarnessAdapter } from './testing/fake-harness.adapter.js';
const SCOPE: TrustedGatewayScope = {
actorId: 'actor-trusted',
tenantId: 'tenant-trusted',
seatId: 'seat-trusted',
correlationId: 'correlation-trusted',
};
const READ_CONTEXT: HarnessActorContext = {
actorId: SCOPE.actorId,
tenantId: SCOPE.tenantId,
seatId: SCOPE.seatId,
correlationId: SCOPE.correlationId,
};
function setup(capabilities?: readonly HarnessCapability[]) {
const registry = new HarnessRegistry();
const adapter = new FakeHarnessAdapter({ id: 'fake', capabilities });
registry.register(adapter);
const service = new HarnessService(registry);
return { registry, adapter, service };
}
async function availableSelection(adapter: FakeHarnessAdapter): Promise<HarnessSelection> {
const catalog = await adapter.catalog(READ_CONTEXT);
const entry = catalog.models.find((model) => model.availability === 'available');
if (!entry) {
throw new Error('fixture requires an available model');
}
return { harnessId: entry.harnessId, providerId: entry.providerId, modelId: entry.modelId };
}
describe('HarnessService', () => {
it('derives the actor context from trusted scope on create', async () => {
const { service, adapter } = setup();
const selection = await availableSelection(adapter);
const snapshot = await service.createSession(SCOPE, {
conversationId: 'conversation-1',
selection,
});
expect(snapshot.seatId).toBe(SCOPE.seatId);
expect(snapshot.state).toBe('idle');
expect(snapshot.selection).toEqual(selection);
expect(snapshot.nativeSessionId).toBeTruthy();
});
it('rejects server-authority fields supplied by an external caller', async () => {
const { service, adapter } = setup();
const selection = await availableSelection(adapter);
const hostile = {
conversationId: 'conversation-1',
selection,
seatId: 'attacker-seat',
executablePath: '/usr/bin/evil',
home: '/home/attacker',
cwd: '/tmp/attacker',
nativeSessionPath: '/var/native/attacker.jsonl',
} as unknown as Parameters<HarnessService['createSession']>[1];
let error: unknown;
try {
await service.createSession(SCOPE, hostile);
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessScopeViolationError);
expect((error as HarnessScopeViolationError).field).toBe('seatId');
});
it('returns adapter_unavailable for an unknown harness id, echoing the requested tuple', async () => {
const { service } = setup();
const selection: HarnessSelection = {
harnessId: 'ghost-harness',
providerId: 'p',
modelId: 'm',
};
let error: unknown;
try {
await service.createSession(SCOPE, { conversationId: 'conversation-1', selection });
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessOperationError);
const dto = (error as HarnessOperationError).dto;
expect(dto.code).toBe('adapter_unavailable');
expect(dto.selection).toEqual(selection);
expect(dto.correlationId).toBe(SCOPE.correlationId);
});
it('returns selection_invalid for an unknown provider/model tuple, unchanged', async () => {
const { service } = setup();
const selection: HarnessSelection = {
harnessId: 'fake',
providerId: 'ghost-provider',
modelId: 'ghost-model',
};
let error: unknown;
try {
await service.createSession(SCOPE, { conversationId: 'conversation-1', selection });
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessOperationError);
const dto = (error as HarnessOperationError).dto;
expect(dto.code).toBe('selection_invalid');
expect(dto.selection).toEqual(selection);
});
it('returns model_unavailable without falling back for a known unavailable model', async () => {
const { service, adapter } = setup();
const catalog = await adapter.catalog(READ_CONTEXT);
const unavailable = catalog.models.find((entry) => entry.availability === 'unavailable');
expect(unavailable).toBeDefined();
const selection: HarnessSelection = {
harnessId: unavailable!.harnessId,
providerId: unavailable!.providerId,
modelId: unavailable!.modelId,
};
let error: unknown;
try {
await service.createSession(SCOPE, { conversationId: 'conversation-1', selection });
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessOperationError);
const dto = (error as HarnessOperationError).dto;
expect(dto.code).toBe('model_unavailable');
// No substitution: the DTO tuple is exactly what was requested.
expect(dto.selection).toEqual(selection);
});
it('gives create, resume, detach, evict, and end distinct observable effects', async () => {
const { service, adapter } = setup();
const selection = await availableSelection(adapter);
const created = await service.createSession(SCOPE, {
conversationId: 'conversation-create',
selection,
});
expect(created.state).toBe('idle');
expect(created.processId).toBeTruthy();
expect(created.attachedClientIds).toEqual([]);
const resumed = await service.resumeSession(SCOPE, {
conversationId: 'conversation-resume',
nativeSessionId: 'native-preexisting-123',
selection,
});
// Resume binds the supplied native session; create mints a fresh one.
expect(resumed.nativeSessionId).toBe('native-preexisting-123');
expect(resumed.nativeSessionId).not.toBe(created.nativeSessionId);
await service.attach(SCOPE, {
conversationId: 'conversation-create',
clientId: 'browser-1',
});
const afterAttach = await service.snapshot(SCOPE, 'conversation-create');
expect(afterAttach.attachedClientIds).toEqual(['browser-1']);
const afterDetach = await service.detach(SCOPE, {
conversationId: 'conversation-create',
clientId: 'browser-1',
});
// Detach removes the browser attachment only; the process stays alive.
expect(afterDetach.attachedClientIds).toEqual([]);
expect(afterDetach.state).toBe('idle');
expect(afterDetach.processId).toBeTruthy();
const afterEvict = await service.evict(SCOPE, {
conversationId: 'conversation-create',
reason: 'idle_timeout',
});
// Evict stops the process but retains the resumable native session.
expect(afterEvict.state).toBe('evicted');
expect(afterEvict.processId).toBeUndefined();
expect(afterEvict.nativeSessionId).toBe(created.nativeSessionId);
const afterEnd = await service.end(SCOPE, {
conversationId: 'conversation-create',
reason: 'session_ended',
});
// End destructively terminates the native session.
expect(afterEnd.state).toBe('ended');
});
it('fails typed when an unsupported capability is exercised', async () => {
const withoutExtensionUi = HARNESS_CAPABILITIES.filter(
(capability) => capability !== 'extensionUi',
);
const { service, adapter } = setup(withoutExtensionUi);
const selection = await availableSelection(adapter);
await service.createSession(SCOPE, { conversationId: 'conversation-1', selection });
let error: unknown;
try {
await service.respondInteraction(SCOPE, {
conversationId: 'conversation-1',
response: { requestId: 'interaction-1', type: 'confirm', accepted: true },
});
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessOperationError);
expect((error as HarnessOperationError).dto.code).toBe('interaction_unsupported');
});
});
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@@ -1,285 +0,0 @@
import { Inject, Injectable } from '@nestjs/common';
import type {
HarnessActorContext,
HarnessAdapter,
HarnessCatalog,
HarnessCloseReason,
HarnessInteractionResponse,
HarnessSelection,
HarnessSessionHandle,
HarnessSessionSnapshot,
} from '@mosaicstack/types';
import {
HarnessAdapterUnavailableError,
HarnessRegistry,
operationError,
} from './harness.registry.js';
import { HARNESS_REGISTRY } from './harness.tokens.js';
/**
* Trusted, server-derived authority. In production this is produced by the
* Gateway from the authenticated session — never from a browser/caller DTO.
*/
export interface TrustedGatewayScope {
readonly actorId: string;
readonly tenantId: string;
readonly seatId: string;
readonly correlationId: string;
}
/** Server-authority fields that must never arrive from an external request DTO. */
const FORBIDDEN_REQUEST_FIELDS = [
'actorId',
'tenantId',
'correlationId',
'seatId',
'seat',
'executable',
'executablePath',
'home',
'homeDir',
'cwd',
'workingDir',
'workingDirectory',
'nativeSessionPath',
'sessionPath',
] as const;
/** Raised when an external request DTO smuggles a server-authority field. */
export class HarnessScopeViolationError extends Error {
constructor(readonly field: string) {
super(`External request supplied server-authority field "${field}".`);
this.name = 'HarnessScopeViolationError';
}
}
export interface CreateHarnessSessionRequest {
readonly conversationId: string;
readonly selection: HarnessSelection;
}
export interface ResumeHarnessSessionRequest {
readonly conversationId: string;
readonly nativeSessionId: string;
readonly selection: HarnessSelection;
}
export interface AttachClientRequest {
readonly conversationId: string;
readonly clientId: string;
}
export interface DetachClientRequest {
readonly conversationId: string;
readonly clientId: string;
}
export interface EvictSessionRequest {
readonly conversationId: string;
readonly reason: HarnessCloseReason;
}
export interface EndSessionRequest {
readonly conversationId: string;
readonly reason: HarnessCloseReason;
}
export interface RespondInteractionRequest {
readonly conversationId: string;
readonly response: HarnessInteractionResponse;
}
interface ActiveSession {
readonly harnessId: string;
readonly handle: HarnessSessionHandle;
readonly correlationId: string;
}
/**
* Harness-neutral service. It derives the {@link HarnessActorContext} strictly
* from trusted Gateway scope, validates the selected provider/model tuple with
* NO fallback substitution, and exposes distinct create/resume/detach/evict/end
* lifecycle operations.
*/
@Injectable()
export class HarnessService {
private readonly sessions = new Map<string, ActiveSession>();
constructor(@Inject(HARNESS_REGISTRY) private readonly registry: HarnessRegistry) {}
async createSession(
scope: TrustedGatewayScope,
request: CreateHarnessSessionRequest,
): Promise<HarnessSessionSnapshot> {
assertTrustedRequest(request);
const { conversationId, selection } = request;
const adapter = this.resolveAdapter(scope, selection);
const context = deriveActorContext(scope);
await this.assertSelectionAvailable(scope, adapter.catalog(context), selection);
const handle = await adapter.create({ context, conversationId, selection });
this.sessions.set(conversationId, {
harnessId: selection.harnessId,
handle,
correlationId: scope.correlationId,
});
return handle.snapshot();
}
async resumeSession(
scope: TrustedGatewayScope,
request: ResumeHarnessSessionRequest,
): Promise<HarnessSessionSnapshot> {
assertTrustedRequest(request);
const { conversationId, nativeSessionId, selection } = request;
const adapter = this.resolveAdapter(scope, selection);
const context = deriveActorContext(scope);
await this.assertSelectionAvailable(scope, adapter.catalog(context), selection);
const handle = await adapter.resume({ context, conversationId, nativeSessionId, selection });
this.sessions.set(conversationId, {
harnessId: selection.harnessId,
handle,
correlationId: scope.correlationId,
});
return handle.snapshot();
}
async attach(
scope: TrustedGatewayScope,
request: AttachClientRequest,
): Promise<HarnessSessionSnapshot> {
assertTrustedRequest(request);
const handle = this.requireHandle(scope, request.conversationId);
await handle.attach({ clientId: request.clientId });
return handle.snapshot();
}
async detach(
scope: TrustedGatewayScope,
request: DetachClientRequest,
): Promise<HarnessSessionSnapshot> {
assertTrustedRequest(request);
const handle = this.requireHandle(scope, request.conversationId);
await handle.detach(request.clientId);
return handle.snapshot();
}
async evict(
scope: TrustedGatewayScope,
request: EvictSessionRequest,
): Promise<HarnessSessionSnapshot> {
assertTrustedRequest(request);
const handle = this.requireHandle(scope, request.conversationId);
await handle.evictProcess(request.reason);
return handle.snapshot();
}
async end(
scope: TrustedGatewayScope,
request: EndSessionRequest,
): Promise<HarnessSessionSnapshot> {
assertTrustedRequest(request);
const handle = this.requireHandle(scope, request.conversationId);
await handle.endSession(request.reason);
const snapshot = await handle.snapshot();
this.sessions.delete(request.conversationId);
return snapshot;
}
async respondInteraction(
scope: TrustedGatewayScope,
request: RespondInteractionRequest,
): Promise<void> {
assertTrustedRequest(request);
const handle = this.requireHandle(scope, request.conversationId);
await handle.respondInteraction(request.response);
}
async snapshot(
scope: TrustedGatewayScope,
conversationId: string,
): Promise<HarnessSessionSnapshot> {
const handle = this.requireHandle(scope, conversationId);
return handle.snapshot();
}
private resolveAdapter(scope: TrustedGatewayScope, selection: HarnessSelection): HarnessAdapter {
try {
return this.registry.get(selection.harnessId);
} catch (error) {
if (error instanceof HarnessAdapterUnavailableError) {
throw operationError('adapter_unavailable', error.message, selection, scope.correlationId);
}
throw error;
}
}
private async assertSelectionAvailable(
scope: TrustedGatewayScope,
catalogPromise: Promise<HarnessCatalog>,
selection: HarnessSelection,
): Promise<void> {
const catalog = await catalogPromise;
const entry = catalog.models.find(
(candidate) =>
candidate.harnessId === selection.harnessId &&
candidate.providerId === selection.providerId &&
candidate.modelId === selection.modelId,
);
if (!entry) {
// No first-row fallback: reject the requested tuple unchanged.
throw operationError(
'selection_invalid',
'The requested harness/provider/model tuple is not in the catalog.',
selection,
scope.correlationId,
);
}
if (entry.availability === 'unavailable') {
throw operationError(
'model_unavailable',
'The requested model is currently unavailable.',
selection,
scope.correlationId,
true,
);
}
}
private requireHandle(scope: TrustedGatewayScope, conversationId: string): HarnessSessionHandle {
const active = this.sessions.get(conversationId);
if (!active) {
throw operationError(
'session_not_found',
`No active harness session for conversation "${conversationId}".`,
{ harnessId: '', providerId: '', modelId: '' },
scope.correlationId,
);
}
return active.handle;
}
}
/** Build the actor context strictly from trusted scope. No caller data leaks in. */
export function deriveActorContext(scope: TrustedGatewayScope): HarnessActorContext {
return {
actorId: scope.actorId,
tenantId: scope.tenantId,
seatId: scope.seatId,
correlationId: scope.correlationId,
};
}
/** Reject any request object that carries a server-authority field. */
function assertTrustedRequest(request: object): void {
for (const field of FORBIDDEN_REQUEST_FIELDS) {
if (Object.prototype.hasOwnProperty.call(request, field)) {
throw new HarnessScopeViolationError(field);
}
}
}
// Re-export the typed operation error so callers importing from the service
// have the discriminated failure type without reaching into the registry.
export { HarnessOperationError } from './harness.registry.js';
@@ -1,11 +0,0 @@
/**
* Nest dependency-injection tokens for the harness-neutral registry and service.
*
* String tokens follow the existing Gateway convention (see `memory/memory.tokens.ts`)
* and remain valid Nest `InjectionToken`s for `@Inject(...)`.
*/
export const HARNESS_REGISTRY = 'HARNESS_REGISTRY' as const;
export const HARNESS_SERVICE = 'HARNESS_SERVICE' as const;
export type HarnessRegistryToken = typeof HARNESS_REGISTRY;
export type HarnessServiceToken = typeof HARNESS_SERVICE;
@@ -1,107 +0,0 @@
import { describe, expect, it } from 'vitest';
import type { HarnessActorContext, HarnessSelection } from '@mosaicstack/types';
import { HarnessOperationError } from '../harness.registry.js';
import { FakeHarnessAdapter } from './fake-harness.adapter.js';
import { runHarnessAdapterContract } from './harness-adapter.contract.js';
const CONTEXT: HarnessActorContext = {
actorId: 'actor-1',
tenantId: 'tenant-1',
seatId: 'seat-1',
correlationId: 'correlation-1',
};
// The reusable conformance suite. Task 13 re-runs it against the native Pi adapter.
runHarnessAdapterContract('FakeHarnessAdapter', () => new FakeHarnessAdapter({ id: 'fake' }));
describe('FakeHarnessAdapter no-substitution', () => {
it('never substitutes the first catalog row when a bogus selection is requested', async () => {
const adapter = new FakeHarnessAdapter({ id: 'fake' });
const catalog = await adapter.catalog(CONTEXT);
const firstRow = catalog.models[0];
if (!firstRow) {
throw new Error('fixture requires a catalog model');
}
const available = catalog.models.find(
(entry) => entry.availability === 'available' && entry.modelId !== firstRow.modelId,
);
expect(available).toBeDefined();
const selected: HarnessSelection = {
harnessId: available!.harnessId,
providerId: available!.providerId,
modelId: available!.modelId,
};
const handle = await adapter.create({
context: CONTEXT,
conversationId: 'conversation-1',
selection: selected,
});
const bogus: HarnessSelection = {
harnessId: 'fake',
providerId: 'ghost-provider',
modelId: 'ghost-model',
};
let error: unknown;
try {
await handle.setModel(bogus);
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessOperationError);
const dto = (error as HarnessOperationError).dto;
expect(dto.code).toBe('selection_invalid');
// The DTO echoes the exact requested tuple, unchanged.
expect(dto.selection).toEqual(bogus);
// No substitution to the first catalog row.
expect(dto.selection).not.toEqual({
harnessId: firstRow.harnessId,
providerId: firstRow.providerId,
modelId: firstRow.modelId,
});
// The active selection is untouched by the rejected request.
expect((await handle.snapshot()).selection).toEqual(selected);
});
it('reports model_unavailable with the unchanged tuple for a known but unavailable model', async () => {
const adapter = new FakeHarnessAdapter({ id: 'fake' });
const catalog = await adapter.catalog(CONTEXT);
const unavailable = catalog.models.find((entry) => entry.availability === 'unavailable');
const available = catalog.models.find((entry) => entry.availability === 'available');
expect(unavailable).toBeDefined();
expect(available).toBeDefined();
const startingSelection: HarnessSelection = {
harnessId: available!.harnessId,
providerId: available!.providerId,
modelId: available!.modelId,
};
const handle = await adapter.create({
context: CONTEXT,
conversationId: 'conversation-2',
selection: startingSelection,
});
const requested: HarnessSelection = {
harnessId: unavailable!.harnessId,
providerId: unavailable!.providerId,
modelId: unavailable!.modelId,
};
let error: unknown;
try {
await handle.setModel(requested);
} catch (caught) {
error = caught;
}
expect(error).toBeInstanceOf(HarnessOperationError);
const dto = (error as HarnessOperationError).dto;
expect(dto.code).toBe('model_unavailable');
expect(dto.selection).toEqual(requested);
expect((await handle.snapshot()).selection).toEqual(startingSelection);
});
});
@@ -1,248 +0,0 @@
import type {
AttachClient,
CreateHarnessSession,
HarnessAdapter,
HarnessActorContext,
HarnessCapability,
HarnessCatalog,
HarnessCatalogEntry,
HarnessCloseReason,
HarnessDescriptor,
HarnessEvent,
HarnessInteractionResponse,
HarnessPrompt,
HarnessPromptReceipt,
HarnessSelection,
HarnessSessionHandle,
HarnessSessionSnapshot,
HarnessSessionState,
ResumeHarnessSession,
} from '@mosaicstack/types';
import { HARNESS_CAPABILITIES } from '@mosaicstack/types';
import { operationError } from '../harness.registry.js';
export interface FakeHarnessAdapterOptions {
readonly id: string;
readonly capabilities?: readonly HarnessCapability[];
readonly catalog?: readonly HarnessCatalogEntry[];
}
const FAKE_PROVIDER = 'fake-openai';
function defaultCatalog(harnessId: string): readonly HarnessCatalogEntry[] {
return [
{
harnessId,
providerId: FAKE_PROVIDER,
modelId: 'fake-mini',
displayName: 'Fake Mini',
reasoningCapability: false,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
{
harnessId,
providerId: FAKE_PROVIDER,
modelId: 'fake-pro',
displayName: 'Fake Pro',
reasoningCapability: true,
inputTypes: ['text', 'image'],
authState: 'ready',
availability: 'available',
},
{
harnessId,
providerId: FAKE_PROVIDER,
modelId: 'fake-legacy',
displayName: 'Fake Legacy',
reasoningCapability: false,
inputTypes: ['text'],
authState: 'unavailable',
availability: 'unavailable',
},
];
}
function matches(entry: HarnessCatalogEntry, selection: HarnessSelection): boolean {
return (
entry.harnessId === selection.harnessId &&
entry.providerId === selection.providerId &&
entry.modelId === selection.modelId
);
}
/**
* In-memory harness session handle used by the fake adapter and by the shared
* conformance suite. It enforces the two invariants the real adapters must also
* honor: model selection is validated against the catalog and is NEVER
* substituted, and unsupported capabilities fail with a typed error.
*/
export class FakeHarnessSessionHandle implements HarnessSessionHandle {
private state: HarnessSessionState = 'idle';
private processId: string | undefined;
private readonly attachedClientIds = new Set<string>();
private readonly listeners = new Set<(event: HarnessEvent) => void>();
constructor(
private readonly conversationId: string,
private readonly nativeSessionId: string,
private readonly seatId: string,
private selection: HarnessSelection,
private readonly correlationId: string,
private readonly capabilities: readonly HarnessCapability[],
private readonly catalog: readonly HarnessCatalogEntry[],
) {
this.processId = `process-${nativeSessionId}`;
}
async snapshot(): Promise<HarnessSessionSnapshot> {
return {
conversationId: this.conversationId,
nativeSessionId: this.nativeSessionId,
processId: this.processId,
seatId: this.seatId,
selection: this.selection,
state: this.state,
attachedClientIds: [...this.attachedClientIds],
};
}
async attach(input: AttachClient): Promise<void> {
this.attachedClientIds.add(input.clientId);
}
async detach(clientId: string): Promise<void> {
// Removes the browser attachment only; the process and native session persist.
this.attachedClientIds.delete(clientId);
}
async prompt(input: HarnessPrompt & { idempotencyKey: string }): Promise<HarnessPromptReceipt> {
return {
conversationId: this.conversationId,
turnId: input.turnId,
correlationId: input.correlationId,
state: 'accepted',
selection: this.selection,
};
}
async setModel(selection: HarnessSelection): Promise<HarnessSelection> {
const entry = this.catalog.find((candidate) => matches(candidate, selection));
if (!entry) {
// No fallback to the first catalog row: reject with the requested tuple, unchanged.
throw operationError(
'selection_invalid',
'The requested harness/provider/model tuple is not in the catalog.',
selection,
this.correlationId,
);
}
if (entry.availability === 'unavailable') {
throw operationError(
'model_unavailable',
'The requested model is currently unavailable.',
selection,
this.correlationId,
true,
);
}
this.selection = selection;
return this.selection;
}
async abort(_turnId: string): Promise<void> {
// No active turn machinery in the fake; abort is a no-op acknowledgement.
}
async respondInteraction(_input: HarnessInteractionResponse): Promise<void> {
if (!this.capabilities.includes('extensionUi')) {
throw operationError(
'interaction_unsupported',
'This harness does not support interactive responses.',
this.selection,
this.correlationId,
);
}
}
events(listener: (event: HarnessEvent) => void): () => void {
this.listeners.add(listener);
return () => {
this.listeners.delete(listener);
};
}
async evictProcess(_reason: HarnessCloseReason): Promise<void> {
// Stop the process but keep the resumable native session.
this.processId = undefined;
this.state = 'evicted';
}
async endSession(_reason: HarnessCloseReason): Promise<void> {
// Destructively end the native session.
this.processId = undefined;
this.state = 'ended';
}
}
/**
* Minimal in-memory {@link HarnessAdapter} for Slice Zero. It mints a fresh
* native session id on `create` and binds the supplied one on `resume`, so the
* two paths are observably distinct.
*/
export class FakeHarnessAdapter implements HarnessAdapter {
readonly id: string;
private readonly capabilities: readonly HarnessCapability[];
private readonly catalogEntries: readonly HarnessCatalogEntry[];
private createdCount = 0;
constructor(options: FakeHarnessAdapterOptions) {
this.id = options.id;
this.capabilities = options.capabilities ?? [...HARNESS_CAPABILITIES];
this.catalogEntries = options.catalog ?? defaultCatalog(options.id);
}
async describe(_context: HarnessActorContext): Promise<HarnessDescriptor> {
return {
id: this.id,
displayName: `Fake harness (${this.id})`,
capabilities: this.capabilities,
};
}
async catalog(_context: HarnessActorContext): Promise<HarnessCatalog> {
return {
harnessId: this.id,
version: '1.0.0',
fingerprint: `fake-${this.id}-${this.catalogEntries.length}`,
models: this.catalogEntries,
};
}
async create(input: CreateHarnessSession): Promise<HarnessSessionHandle> {
this.createdCount += 1;
const nativeSessionId = `native-${input.conversationId}-${this.createdCount}`;
return new FakeHarnessSessionHandle(
input.conversationId,
nativeSessionId,
input.context.seatId,
input.selection,
input.context.correlationId,
this.capabilities,
this.catalogEntries,
);
}
async resume(input: ResumeHarnessSession): Promise<HarnessSessionHandle> {
return new FakeHarnessSessionHandle(
input.conversationId,
input.nativeSessionId,
input.context.seatId,
input.selection,
input.context.correlationId,
this.capabilities,
this.catalogEntries,
);
}
}
@@ -1,157 +0,0 @@
import { describe, expect, it } from 'vitest';
import type {
HarnessActorContext,
HarnessAdapter,
HarnessCatalogEntry,
HarnessSelection,
} from '@mosaicstack/types';
import { HarnessOperationError } from '../harness.registry.js';
const CONTEXT: HarnessActorContext = {
actorId: 'contract-actor',
tenantId: 'contract-tenant',
seatId: 'contract-seat',
correlationId: 'contract-correlation',
};
function toSelection(entry: HarnessCatalogEntry): HarnessSelection {
return { harnessId: entry.harnessId, providerId: entry.providerId, modelId: entry.modelId };
}
function pickAvailable(models: readonly HarnessCatalogEntry[]): HarnessCatalogEntry {
const entry = models.find((candidate) => candidate.availability === 'available') ?? models[0];
if (!entry) {
throw new Error('contract fixture requires at least one catalog model');
}
return entry;
}
async function captureError(run: () => Promise<unknown>): Promise<unknown> {
try {
await run();
return undefined;
} catch (caught) {
return caught;
}
}
/**
* Shared conformance suite every {@link HarnessAdapter} must pass. Slice Zero
* runs it against the fake adapter; Task 13 re-runs the identical suite against
* the native Pi adapter so both share one behavioral contract.
*/
export function runHarnessAdapterContract(
label: string,
createAdapter: () => HarnessAdapter,
): void {
describe(`harness adapter contract: ${label}`, () => {
it('mints a fresh native session on create and binds the supplied one on resume', async () => {
const adapter = createAdapter();
const catalog = await adapter.catalog(CONTEXT);
const selection = toSelection(pickAvailable(catalog.models));
const created = await (
await adapter.create({ context: CONTEXT, conversationId: 'conv-create', selection })
).snapshot();
const resumed = await (
await adapter.resume({
context: CONTEXT,
conversationId: 'conv-resume',
nativeSessionId: 'native-supplied-1',
selection,
})
).snapshot();
expect(created.nativeSessionId).toBeTruthy();
expect(resumed.nativeSessionId).toBe('native-supplied-1');
expect(created.nativeSessionId).not.toBe(resumed.nativeSessionId);
expect(created.seatId).toBe(CONTEXT.seatId);
});
it('gives detach, evict, and end distinct effects (not aliases)', async () => {
const adapter = createAdapter();
const catalog = await adapter.catalog(CONTEXT);
const selection = toSelection(pickAvailable(catalog.models));
const handle = await adapter.create({
context: CONTEXT,
conversationId: 'conv-lifecycle',
selection,
});
await handle.attach({ clientId: 'browser-1' });
await handle.detach('browser-1');
const afterDetach = await handle.snapshot();
expect(afterDetach.attachedClientIds).toEqual([]);
expect(afterDetach.state).not.toBe('evicted');
expect(afterDetach.state).not.toBe('ended');
await handle.evictProcess('idle_timeout');
const afterEvict = await handle.snapshot();
expect(afterEvict.state).toBe('evicted');
// The native session survives eviction (resumable); the process does not.
expect(afterEvict.nativeSessionId).toBe(afterDetach.nativeSessionId);
expect(afterEvict.processId).toBeUndefined();
await handle.endSession('session_ended');
const afterEnd = await handle.snapshot();
expect(afterEnd.state).toBe('ended');
// End is not an alias of evict.
expect(afterEnd.state).not.toBe(afterEvict.state);
});
it('never substitutes the first catalog row for an unknown selection', async () => {
const adapter = createAdapter();
const catalog = await adapter.catalog(CONTEXT);
const firstRow = catalog.models[0];
if (!firstRow) {
throw new Error('contract fixture requires a catalog model');
}
const start = toSelection(pickAvailable(catalog.models));
const handle = await adapter.create({
context: CONTEXT,
conversationId: 'conv-nosub',
selection: start,
});
const bogus: HarnessSelection = {
harnessId: adapter.id,
providerId: 'contract-ghost-provider',
modelId: 'contract-ghost-model',
};
const error = await captureError(() => handle.setModel(bogus));
expect(error).toBeInstanceOf(HarnessOperationError);
const dto = (error as HarnessOperationError).dto;
expect(dto.code).toBe('selection_invalid');
expect(dto.selection).toEqual(bogus);
expect(dto.selection).not.toEqual(toSelection(firstRow));
expect((await handle.snapshot()).selection).toEqual(start);
});
it('validates capability-gated interactions with a typed error, not a silent no-op', async () => {
const adapter = createAdapter();
const descriptor = await adapter.describe(CONTEXT);
const catalog = await adapter.catalog(CONTEXT);
const selection = toSelection(pickAvailable(catalog.models));
const handle = await adapter.create({
context: CONTEXT,
conversationId: 'conv-interaction',
selection,
});
const response = {
requestId: 'interaction-1',
type: 'confirm',
accepted: true,
} as const;
if (descriptor.capabilities.includes('extensionUi')) {
await expect(handle.respondInteraction(response)).resolves.toBeUndefined();
} else {
const error = await captureError(() => handle.respondInteraction(response));
expect(error).toBeInstanceOf(HarnessOperationError);
expect((error as HarnessOperationError).dto.code).toBe('interaction_unsupported');
}
});
});
}
-39
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@@ -1,42 +1,3 @@
import type {
HarnessAuthState,
HarnessModelAvailability,
HarnessSelection,
} from '@mosaicstack/types';
// The exact harness/provider/model tuple and its closed enum companions are the
// shared domain types — re-exported here so web consumers (and the runtime
// guards) import one shape, never a divergent local redefinition.
export type { HarnessSelection, HarnessAuthState, HarnessModelAvailability };
/** Harness summary row from `GET /api/harnesses` (the `HarnessSummaryDto`). The
* harness id is kept distinct from any provider id — they are never merged. */
export interface HarnessSummary {
id: string;
displayName: string;
capabilities: string[];
}
/** One selectable model in a harness catalog. Extends the `{harnessId,
* providerId, modelId}` tuple with the display/availability metadata the UI
* needs; `inputTypes` is kept as a plain `string[]` on the client boundary
* because it arrives from untrusted JSON and is only ever displayed. */
export interface HarnessCatalogEntry extends HarnessSelection {
displayName: string;
reasoningCapability: boolean;
inputTypes: string[];
authState: HarnessAuthState;
availability: HarnessModelAvailability;
}
/** Harness-scoped catalog from `GET /api/harnesses/:harnessId/catalog`. */
export interface HarnessCatalog {
harnessId: string;
version: string;
fingerprint: string;
models: HarnessCatalogEntry[];
}
/** Conversation returned by the gateway API. */
export interface Conversation {
id: string;
-195
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@@ -1,195 +0,0 @@
import { afterEach, describe, expect, it, vi } from 'vitest';
import {
fetchCatalog,
fetchHarnesses,
fetchPersistedSelection,
persistSelection,
} from './chat-api';
function json(body: unknown, status = 200): Response {
return new Response(JSON.stringify(body), {
status,
headers: { 'Content-Type': 'application/json' },
});
}
function stubFetch(): ReturnType<typeof vi.fn> {
const fetchMock = vi.fn();
vi.stubGlobal('fetch', fetchMock);
return fetchMock;
}
/** Every URL the client actually requested, across all calls. */
function requestedUrls(fetchMock: ReturnType<typeof vi.fn>): string[] {
return fetchMock.mock.calls.map((call) => String(call[0]));
}
describe('chat-api', () => {
afterEach(() => {
vi.unstubAllGlobals();
});
it('fetchHarnesses GETs /api/harnesses and returns typed summaries (harness id separate from provider)', async () => {
const fetchMock = stubFetch();
fetchMock.mockResolvedValue(
json([
{ id: 'pi', displayName: 'Pi', capabilities: ['chat', 'tools'] },
{ id: 'openai', displayName: 'OpenAI', capabilities: ['chat'] },
]),
);
const harnesses = await fetchHarnesses();
expect(fetchMock).toHaveBeenCalledOnce();
expect(String(fetchMock.mock.calls[0]?.[0])).toBe('/api/harnesses');
expect(harnesses).toEqual([
{ id: 'pi', displayName: 'Pi', capabilities: ['chat', 'tools'] },
{ id: 'openai', displayName: 'OpenAI', capabilities: ['chat'] },
]);
});
it('fetchCatalog GETs the harness-scoped catalog and returns only its model entries', async () => {
const fetchMock = stubFetch();
fetchMock.mockResolvedValue(
json({
harnessId: 'pi',
version: '2026-08-11',
fingerprint: 'abc123',
models: [
{
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
displayName: 'GPT-5',
reasoningCapability: true,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
],
}),
);
const result = await fetchCatalog('pi');
expect(String(fetchMock.mock.calls[0]?.[0])).toBe('/api/harnesses/pi/catalog');
expect(result.ok).toBe(true);
if (!result.ok) throw new Error('expected ok catalog');
expect(result.catalog.harnessId).toBe('pi');
expect(result.catalog.models).toHaveLength(1);
expect(result.catalog.models[0]).toMatchObject({
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
availability: 'available',
});
});
it('normalizes a catalog 404 into a typed catalog_unavailable result without surfacing the raw body', async () => {
const fetchMock = stubFetch();
fetchMock.mockResolvedValue(
json(
{
code: 'adapter_unavailable',
message: 'raw gateway detail that must not leak verbatim',
harnessId: 'attacker-echo',
extra: { hostile: 'blob' },
},
404,
),
);
const result = await fetchCatalog('ghost');
expect(result.ok).toBe(false);
if (result.ok) throw new Error('expected unavailable result');
expect(result.code).toBe('catalog_unavailable');
// harnessId comes from the request, never the (untrusted) response body.
expect(result.harnessId).toBe('ghost');
expect(typeof result.message).toBe('string');
// The raw response body is never rendered/returned verbatim.
expect(JSON.stringify(result)).not.toContain('hostile');
expect(JSON.stringify(result)).not.toContain('attacker-echo');
});
it('fetchPersistedSelection returns the stored tuple, or null when unset', async () => {
const fetchMock = stubFetch();
fetchMock.mockResolvedValueOnce(
json({ selection: { harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' } }),
);
await expect(fetchPersistedSelection()).resolves.toEqual({
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
});
expect(String(fetchMock.mock.calls[0]?.[0])).toBe('/api/chat/preferences/selection');
fetchMock.mockResolvedValueOnce(json({ selection: null }));
await expect(fetchPersistedSelection()).resolves.toBeNull();
});
it('persistSelection PUTs the structured tuple (not free text) and returns the confirmed selection', async () => {
const fetchMock = stubFetch();
fetchMock.mockResolvedValue(
json({ selection: { harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' } }),
);
const result = await persistSelection({
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
});
expect(result.ok).toBe(true);
const call = fetchMock.mock.calls[0];
expect(String(call?.[0])).toBe('/api/chat/preferences/selection');
const init = call?.[1] as RequestInit;
expect(String(init.method).toUpperCase()).toBe('PUT');
// The body is exactly the structured tuple — harness/provider/model kept distinct.
expect(JSON.parse(String(init.body))).toEqual({
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
});
});
it('normalizes a selection 422 into a typed error preserving the requested tuple exactly', async () => {
const fetchMock = stubFetch();
fetchMock.mockResolvedValue(
json(
{
code: 'model_unavailable',
message: 'raw detail that must not leak',
selection: { harnessId: 'x', providerId: 'y', modelId: 'z' },
},
422,
),
);
const requested = { harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' };
const result = await persistSelection(requested);
expect(result.ok).toBe(false);
if (result.ok) throw new Error('expected failed persist');
expect(['selection_invalid', 'model_unavailable']).toContain(result.code);
// The requested tuple is preserved unchanged — not replaced by the body's echo.
expect(result.requested).toEqual(requested);
expect(JSON.stringify(result)).not.toContain('raw detail');
});
it('never requests any /api/providers* endpoint', async () => {
const fetchMock = stubFetch();
fetchMock.mockResolvedValue(json([]));
await fetchHarnesses();
fetchMock.mockResolvedValue(
json({ harnessId: 'pi', version: '1', fingerprint: 'f', models: [] }),
);
await fetchCatalog('pi');
fetchMock.mockResolvedValue(json({ selection: null }));
await fetchPersistedSelection();
for (const url of requestedUrls(fetchMock)) {
expect(url).not.toContain('/api/providers');
}
});
});
-132
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@@ -1,132 +0,0 @@
/**
* Typed fetch wrappers for the Task-3 harness HTTP contract the chat selection
* UI depends on. Every response body is untrusted and is normalized through the
* runtime guards before it reaches state — a 404 (catalog) and a 422 (selection)
* are mapped to typed, body-free error results so a raw gateway body is never
* rendered, and the caller's requested tuple is preserved verbatim on failure.
*
* This module talks ONLY to the harness/chat-preferences endpoints. It never
* calls `/api/providers*` — provider identity lives inside the harness catalog.
*/
import { asHarnessCatalog, asHarnessSelection, asHarnessSummaries } from './runtime-guards';
import type { HarnessCatalog, HarnessSelection, HarnessSummary } from '@/lib/types';
/** A catalog fetch either yields the typed catalog or a typed unavailability —
* never a thrown raw body. */
export type CatalogResult =
| { ok: true; catalog: HarnessCatalog }
| { ok: false; code: 'catalog_unavailable'; harnessId: string; message: string };
export type SelectionErrorCode = 'selection_invalid' | 'model_unavailable';
/** A persist either confirms the stored tuple or reports a typed domain failure
* that echoes back the exact tuple the caller requested. */
export type SelectionPersistResult =
| { ok: true; selection: HarnessSelection }
| { ok: false; code: SelectionErrorCode; message: string; requested: HarnessSelection };
/** A safe, generic message for an unavailable catalog — the raw 404 body is
* never surfaced. */
const CATALOG_UNAVAILABLE_MESSAGE = 'This harness catalog is currently unavailable.';
/** A safe, generic message for a rejected selection. The untrusted 422 body's
* own `message` is deliberately NEVER surfaced — only this fixed copy — so a
* raw gateway detail can never leak into the UI. Only the closed `code` enum is
* read from the body. */
const SELECTION_REJECTED_MESSAGE = 'This selection was rejected.';
async function readJson(response: Response): Promise<unknown> {
return response.json().catch(() => null);
}
function safeSelectionCode(body: unknown): SelectionErrorCode {
if (typeof body === 'object' && body !== null && 'code' in body) {
const code = (body as { code: unknown }).code;
if (code === 'selection_invalid' || code === 'model_unavailable') return code;
}
// Default to the more conservative "invalid" classification for anything
// unrecognized rather than guessing "model_unavailable".
return 'selection_invalid';
}
/** `GET /api/harnesses` → the list of harness summaries. A non-OK response
* normalizes to an empty list (the UI then has no harness to select). */
export async function fetchHarnesses(): Promise<HarnessSummary[]> {
const response = await fetch('/api/harnesses', {
credentials: 'include',
headers: { Accept: 'application/json' },
});
if (!response.ok) return [];
return asHarnessSummaries(await readJson(response));
}
/** `GET /api/harnesses/:harnessId/catalog` → the harness-scoped catalog. A 404
* (or any non-OK) becomes a typed `catalog_unavailable` result rather than a
* fallback catalog or a rendered raw body. */
export async function fetchCatalog(harnessId: string): Promise<CatalogResult> {
const response = await fetch(`/api/harnesses/${encodeURIComponent(harnessId)}/catalog`, {
credentials: 'include',
headers: { Accept: 'application/json' },
});
if (!response.ok) {
return {
ok: false,
code: 'catalog_unavailable',
// Scoped to the requested harness id, never the untrusted body's echo.
harnessId,
message: CATALOG_UNAVAILABLE_MESSAGE,
};
}
return { ok: true, catalog: asHarnessCatalog(await readJson(response), harnessId) };
}
/** `GET /api/chat/preferences/selection` → the persisted tuple, or null when
* unset or malformed. */
export async function fetchPersistedSelection(): Promise<HarnessSelection | null> {
const response = await fetch('/api/chat/preferences/selection', {
credentials: 'include',
headers: { Accept: 'application/json' },
});
if (!response.ok) return null;
const body = await readJson(response);
if (typeof body !== 'object' || body === null) return null;
return asHarnessSelection((body as { selection?: unknown }).selection);
}
/** `PUT /api/chat/preferences/selection` with the structured tuple as the body.
* On success returns the confirmed selection; on a typed domain failure (422)
* or validation error, returns a typed result carrying the EXACT requested
* tuple — never the body's echo — and never the raw body text. */
export async function persistSelection(
selection: HarnessSelection,
): Promise<SelectionPersistResult> {
const requested: HarnessSelection = {
harnessId: selection.harnessId,
providerId: selection.providerId,
modelId: selection.modelId,
};
const response = await fetch('/api/chat/preferences/selection', {
method: 'PUT',
credentials: 'include',
headers: { Accept: 'application/json', 'Content-Type': 'application/json' },
body: JSON.stringify(requested),
});
if (!response.ok) {
const body = await readJson(response);
return {
ok: false,
code: safeSelectionCode(body),
// Fixed copy only — the untrusted body's message is never surfaced.
message: SELECTION_REJECTED_MESSAGE,
requested,
};
}
const body = await readJson(response);
const confirmed =
typeof body === 'object' && body !== null
? asHarnessSelection((body as { selection?: unknown }).selection)
: null;
// A malformed 2xx body is treated as a confirmation of exactly what we sent —
// the server accepted the tuple, so the requested tuple is the source of truth.
return { ok: true, selection: confirmed ?? requested };
}
+18 -94
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@@ -1,5 +1,4 @@
import { useState, type KeyboardEvent, type ReactElement } from 'react';
import type { HarnessSelectionValue } from './use-harness-selection';
interface ComposerProps {
onSend: (input: { content: string; provider?: string; modelId?: string }) => void;
@@ -10,23 +9,6 @@ interface ComposerProps {
* pre-ack window where a second send could otherwise slip through. */
sending: boolean;
hasConversation: boolean;
/** Structured harness/provider/model selection state. The composer never
* accepts free-text provider/model — every sendable tuple is a validated,
* persisted catalog entry, and the send projection is derived from it. */
harness: HarnessSelectionValue;
}
/** The distinct provider ids present in the current catalog, in first-seen
* order — the provider select is catalog-derived, never a hardcoded list. */
function providerOptions(harness: HarnessSelectionValue): string[] {
const seen = new Set<string>();
const out: string[] = [];
for (const model of harness.catalog?.models ?? []) {
if (seen.has(model.providerId)) continue;
seen.add(model.providerId);
out.push(model.providerId);
}
return out;
}
export function Composer({
@@ -35,19 +17,21 @@ export function Composer({
streaming,
sending,
hasConversation,
harness,
}: ComposerProps): ReactElement {
const [content, setContent] = useState('');
const [provider, setProvider] = useState('');
const [modelId, setModelId] = useState('');
const busy = streaming || sending;
function submit(): void {
if (busy) return;
// Send is gated on a validated, persisted catalog tuple — a draft or unset
// selection can never emit, so provider/model never travel as free text.
if (!harness.canSend) return;
const trimmed = content.trim();
if (!trimmed) return;
onSend({ content: trimmed, ...harness.projection });
onSend({
content: trimmed,
provider: provider.trim() || undefined,
modelId: modelId.trim() || undefined,
});
setContent('');
}
@@ -58,19 +42,6 @@ export function Composer({
}
}
// Scope the model options to the intentionally selected provider. With no
// provider chosen (`providerId === ''`) nothing matches, so the model select
// offers only the placeholder — never a cross-provider row.
const models = (harness.catalog?.models ?? []).filter(
(model) => model.providerId === harness.providerId,
);
// A collision-safe composite option identity covering the full provider+model
// tuple. The controlled select mirrors the same identity so the exact catalog
// row highlights (a bare modelId would collide across providers).
const modelOptionValue = (model: { providerId: string; modelId: string }): string =>
`${model.providerId}:${model.modelId}`;
const selectedModelValue = harness.modelId ? `${harness.providerId}:${harness.modelId}` : '';
return (
<form
onSubmit={(event) => {
@@ -80,68 +51,21 @@ export function Composer({
className="flex flex-col gap-2 border-t p-4"
>
<div className="flex flex-wrap gap-2">
<select
aria-label="Harness"
value={harness.harnessId}
onChange={(event) => harness.selectHarness(event.target.value)}
className="rounded border px-2 py-1 text-xs"
>
<option value="">Select a harness</option>
{harness.harnesses.map((item) => (
<option key={item.id} value={item.id}>
{item.displayName}
</option>
))}
</select>
<select
<input
aria-label="Provider"
value={harness.providerId}
onChange={(event) => harness.selectProvider(event.target.value)}
disabled={harness.catalogUnavailable || providerOptions(harness).length === 0}
value={provider}
onChange={(event) => setProvider(event.target.value)}
placeholder="Provider (optional)"
className="rounded border px-2 py-1 text-xs"
>
<option value="">Select a provider</option>
{providerOptions(harness).map((providerId) => (
<option key={providerId} value={providerId}>
{providerId}
</option>
))}
</select>
<select
/>
<input
aria-label="Model"
value={selectedModelValue}
onChange={(event) => {
// Resolve the composite option identity back to the exact catalog
// row and persist that row's own provider+model — never a bare id.
const selected = models.find((model) => modelOptionValue(model) === event.target.value);
if (selected) harness.selectModel(selected.providerId, selected.modelId);
}}
disabled={harness.catalogUnavailable || models.length === 0}
value={modelId}
onChange={(event) => setModelId(event.target.value)}
placeholder="Model (optional)"
className="rounded border px-2 py-1 text-xs"
>
<option value="">Select a model</option>
{models.map((model) => (
<option key={modelOptionValue(model)} value={modelOptionValue(model)}>
{model.displayName}
</option>
))}
</select>
/>
</div>
{harness.catalogUnavailable ? (
<p role="status" className="text-xs opacity-70">
This harness catalog is currently unavailable.
</p>
) : null}
{harness.isStale ? (
<p role="status" className="text-xs opacity-70">
The saved model is no longer available pick another to continue.
</p>
) : null}
{harness.persistError ? (
<p role="alert" className="text-xs">
{harness.persistError.message}
</p>
) : null}
<div className="flex items-end gap-2">
<textarea
aria-label="Message"
@@ -154,7 +78,7 @@ export function Composer({
/>
<button
type="submit"
disabled={!content.trim() || busy || !harness.canSend}
disabled={!content.trim() || busy}
className="rounded px-3 py-2 text-sm font-medium"
>
Send
-101
View File
@@ -5,14 +5,6 @@
* a non-array, `.toFixed` on a non-number) or render an object as a React
* child.
*/
import type {
HarnessAuthState,
HarnessCatalog,
HarnessCatalogEntry,
HarnessModelAvailability,
HarnessSelection,
HarnessSummary,
} from '@/lib/types';
export function asString(value: unknown, fallback = ''): string {
return typeof value === 'string' ? value : fallback;
@@ -46,99 +38,6 @@ export function isRecord(value: unknown): value is Record<string, unknown> {
return typeof value === 'object' && value !== null;
}
/**
* The HTTP harness/catalog/selection JSON bodies are as untrusted as the socket
* payloads above — a misbehaving or compromised gateway can send anything. The
* guards below normalize those bodies into the typed client shapes without ever
* rendering a raw body, so a 404/422/malformed response can never inject an
* object into React or a non-tuple into the selection state.
*/
/** Normalizes an untrusted `authState` to the closed set, defaulting to the
* safest value (`unavailable`) for anything unrecognized. */
export function asHarnessAuthState(value: unknown): HarnessAuthState {
return value === 'ready' || value === 'auth_required' || value === 'unavailable'
? value
: 'unavailable';
}
/** Normalizes an untrusted `availability` to the closed set, defaulting to
* `unavailable` so a malformed row can never present as sendable. */
export function asHarnessAvailability(value: unknown): HarnessModelAvailability {
return value === 'available' ? 'available' : 'unavailable';
}
/** A tuple is valid only when all three ids are non-empty strings — a partial
* or malformed selection is rejected (null) rather than half-adopted. */
export function asHarnessSelection(value: unknown): HarnessSelection | null {
if (!isRecord(value)) return null;
const harnessId = value.harnessId;
const providerId = value.providerId;
const modelId = value.modelId;
if (
typeof harnessId !== 'string' ||
typeof providerId !== 'string' ||
typeof modelId !== 'string' ||
harnessId.length === 0 ||
providerId.length === 0 ||
modelId.length === 0
) {
return null;
}
return { harnessId, providerId, modelId };
}
/** Normalizes an untrusted array into typed harness summaries, dropping any row
* without a usable id. */
export function asHarnessSummaries(value: unknown): HarnessSummary[] {
if (!Array.isArray(value)) return [];
const out: HarnessSummary[] = [];
for (const item of value) {
if (!isRecord(item)) continue;
const id = asString(item.id);
if (id.length === 0) continue;
out.push({
id,
displayName: asNonEmptyString(item.displayName, id),
capabilities: asStringArray(item.capabilities),
});
}
return out;
}
function asHarnessCatalogEntry(value: unknown): HarnessCatalogEntry | null {
const selection = asHarnessSelection(value);
if (selection === null || !isRecord(value)) return null;
return {
...selection,
displayName: asNonEmptyString(value.displayName, selection.modelId),
reasoningCapability: value.reasoningCapability === true,
inputTypes: asStringArray(value.inputTypes),
authState: asHarnessAuthState(value.authState),
availability: asHarnessAvailability(value.availability),
};
}
/** Normalizes an untrusted catalog body into the typed client catalog. The
* caller supplies `harnessId` (from the request path) so the returned catalog
* is scoped to the harness that was actually requested, never a body-echoed id.
* Malformed model rows are dropped rather than invalidating the whole catalog. */
export function asHarnessCatalog(value: unknown, harnessId: string): HarnessCatalog {
const record = isRecord(value) ? value : {};
const rawModels = Array.isArray(record.models) ? record.models : [];
const models: HarnessCatalogEntry[] = [];
for (const row of rawModels) {
const entry = asHarnessCatalogEntry(row);
if (entry !== null) models.push(entry);
}
return {
harnessId,
version: asString(record.version),
fingerprint: asString(record.fingerprint),
models,
};
}
/** The single point of truth for what counts as a valid conversation ID
* anywhere a scoped server event may adopt one into state — a non-empty
* string, nothing else. Every site that establishes or compares
@@ -1,445 +0,0 @@
import { act, type ReactElement } from 'react';
import { createRoot, type Root } from 'react-dom/client';
import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
import { useHarnessSelection, type HarnessSelectionValue } from './use-harness-selection';
function json(body: unknown, status = 200): Response {
return new Response(JSON.stringify(body), {
status,
headers: { 'Content-Type': 'application/json' },
});
}
interface Scenario {
harnesses?: unknown;
catalog?: { body: unknown; status?: number };
selection?: unknown;
/** When set, the PUT resolves only when this is called (for race tests). */
deferPut?: boolean;
}
interface Deferred<T> {
promise: Promise<T>;
resolve: (value: T) => void;
}
function defer<T>(): Deferred<T> {
let resolve!: (value: T) => void;
const promise = new Promise<T>((r) => {
resolve = r;
});
return { promise, resolve };
}
let putBodies: unknown[] = [];
let putDeferred: Deferred<Response> | null = null;
function installFetch(scenario: Scenario): ReturnType<typeof vi.fn> {
putBodies = [];
putDeferred = scenario.deferPut ? defer<Response>() : null;
const fetchMock = vi.fn(async (input: unknown, init?: RequestInit) => {
const url = String(input);
const method = String(init?.method ?? 'GET').toUpperCase();
if (url === '/api/harnesses') return json(scenario.harnesses ?? []);
if (url.startsWith('/api/harnesses/') && url.endsWith('/catalog')) {
const spec = scenario.catalog ?? {
body: { harnessId: 'pi', version: '1', fingerprint: 'f', models: [] },
};
return json(spec.body, spec.status ?? 200);
}
if (url === '/api/chat/preferences/selection' && method === 'GET') {
return json({ selection: scenario.selection ?? null });
}
if (url === '/api/chat/preferences/selection' && method === 'PUT') {
putBodies.push(JSON.parse(String(init?.body)));
const ok = json({ selection: JSON.parse(String(init?.body)) });
if (putDeferred) return putDeferred.promise;
return ok;
}
return new Response('not found', { status: 404 });
});
vi.stubGlobal('fetch', fetchMock);
return fetchMock;
}
let latest: HarnessSelectionValue | null = null;
function Probe(): ReactElement | null {
latest = useHarnessSelection();
return null;
}
let root: Root | null;
let container: HTMLElement;
beforeAll(() => {
Object.defineProperty(globalThis, 'IS_REACT_ACT_ENVIRONMENT', {
configurable: true,
value: true,
});
});
afterAll(() => {
Reflect.deleteProperty(globalThis, 'IS_REACT_ACT_ENVIRONMENT');
});
beforeEach(() => {
latest = null;
container = document.createElement('div');
document.body.append(container);
root = createRoot(container);
});
afterEach(async () => {
await act(async () => {
root?.unmount();
});
document.body.replaceChildren();
vi.unstubAllGlobals();
});
async function mount(): Promise<void> {
await act(async () => {
root?.render(<Probe />);
});
await flush();
}
async function flush(times = 5): Promise<void> {
for (let i = 0; i < times; i += 1) {
await act(async () => {
await Promise.resolve();
});
}
}
function value(): HarnessSelectionValue {
if (!latest) throw new Error('hook value not captured');
return latest;
}
const PI_CATALOG = {
harnessId: 'pi',
version: '2026-08-11',
fingerprint: 'fp',
models: [
{
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
displayName: 'GPT-5',
reasoningCapability: true,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
{
harnessId: 'pi',
providerId: 'anthropic',
modelId: 'claude',
displayName: 'Claude',
reasoningCapability: true,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
],
};
describe('useHarnessSelection', () => {
it('loads harnesses and, once a harness is chosen, the model options come only from its catalog', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: PI_CATALOG },
selection: null,
});
await mount();
expect(value().harnesses).toEqual([{ id: 'pi', displayName: 'Pi', capabilities: [] }]);
expect(value().catalog).toBeNull();
await act(async () => {
value().selectHarness('pi');
});
await flush();
expect(value().catalog?.harnessId).toBe('pi');
expect(value().catalog?.models.map((m) => m.modelId)).toEqual(['gpt-5', 'claude']);
});
it('does not auto-select any catalog row when there is no persisted selection (no first-row fallback)', async () => {
const fetchMock = installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: PI_CATALOG },
selection: null,
});
await mount();
await act(async () => {
value().selectHarness('pi');
});
await flush();
expect(value().modelId).toBe('');
expect(value().persistedSelection).toBeNull();
expect(value().canSend).toBe(false);
// Nothing was persisted — no PUT fired for an unset selection.
const putCalls = fetchMock.mock.calls.filter(
(c) => String((c[1] as RequestInit)?.method).toUpperCase() === 'PUT',
);
expect(putCalls).toHaveLength(0);
});
it('persists the structured tuple and only enables send AFTER the PUT resolves (no race ahead of persistence)', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: PI_CATALOG },
selection: null,
deferPut: true,
});
await mount();
await act(async () => {
value().selectHarness('pi');
});
await flush();
await act(async () => {
value().selectProvider('openai');
});
await act(async () => {
value().selectModel('openai', 'gpt-5');
});
await flush();
// PUT is in flight (deferred) — send MUST NOT be enabled yet.
expect(value().canSend).toBe(false);
await act(async () => {
putDeferred?.resolve(
json({ selection: { harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' } }),
);
});
await flush();
expect(putBodies).toContainEqual({ harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' });
expect(value().persistedSelection).toEqual({
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
});
expect(value().canSend).toBe(true);
expect(value().projection).toEqual({ provider: 'openai', modelId: 'gpt-5' });
});
it('keeps a stale/unavailable persisted selection visibly displayed rather than silently dropping it', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: PI_CATALOG },
selection: { harnessId: 'pi', providerId: 'openai', modelId: 'retired-model' },
});
await mount();
// The persisted tuple is displayed even though its model is gone from the catalog.
expect(value().persistedSelection).toEqual({
harnessId: 'pi',
providerId: 'openai',
modelId: 'retired-model',
});
expect(value().modelId).toBe('retired-model');
expect(value().isStale).toBe(true);
// A stale model is not a valid catalog option, so send stays disabled.
expect(value().canSend).toBe(false);
});
it('disables send for an empty catalog (no viable model) and never fabricates one', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: { harnessId: 'pi', version: '1', fingerprint: 'f', models: [] } },
selection: null,
});
await mount();
await act(async () => {
value().selectHarness('pi');
});
await flush();
expect(value().catalog?.models ?? []).toHaveLength(0);
expect(value().canSend).toBe(false);
});
it('marks the catalog unavailable and disables send when the catalog request 404s', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: {
body: { code: 'adapter_unavailable', message: 'x', harnessId: 'pi' },
status: 404,
},
selection: null,
});
await mount();
await act(async () => {
value().selectHarness('pi');
});
await flush();
expect(value().catalogUnavailable).toBe(true);
expect(value().canSend).toBe(false);
});
it('on a 422 persist, keeps the requested tuple visible, surfaces a typed error, and leaves send disabled', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: {
body: {
...PI_CATALOG,
models: [{ ...PI_CATALOG.models[0], availability: 'unavailable' }],
},
},
selection: null,
});
// Override PUT to 422.
const fetchMock = vi.fn(async (input: unknown, init?: RequestInit) => {
const url = String(input);
const method = String(init?.method ?? 'GET').toUpperCase();
if (url === '/api/harnesses')
return json([{ id: 'pi', displayName: 'Pi', capabilities: [] }]);
if (url.endsWith('/catalog')) return json(PI_CATALOG);
if (url === '/api/chat/preferences/selection' && method === 'GET')
return json({ selection: null });
if (url === '/api/chat/preferences/selection' && method === 'PUT') {
return json(
{
code: 'model_unavailable',
message: 'nope',
selection: { harnessId: 'a', providerId: 'b', modelId: 'c' },
},
422,
);
}
return new Response('nf', { status: 404 });
});
vi.stubGlobal('fetch', fetchMock);
await mount();
await act(async () => {
value().selectHarness('pi');
});
await flush();
await act(async () => {
value().selectProvider('openai');
});
await act(async () => {
value().selectModel('openai', 'gpt-5');
});
await flush();
expect(value().modelId).toBe('gpt-5');
expect(value().persistError?.code).toBe('model_unavailable');
expect(value().persistError?.requested).toEqual({
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
});
expect(value().persistedSelection).toBeNull();
expect(value().canSend).toBe(false);
});
it('invalidates the model on a provider change and keeps send disabled until the new tuple persists', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: PI_CATALOG },
selection: null,
});
await mount();
await act(async () => {
value().selectHarness('pi');
});
await flush();
await act(async () => {
value().selectProvider('openai');
});
await act(async () => {
value().selectModel('openai', 'gpt-5');
});
await flush();
// A valid provider-A tuple has persisted.
expect(value().canSend).toBe(true);
expect(value().persistedSelection).toEqual({
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
});
// Switching provider clears the model that no longer belongs to it.
await act(async () => {
value().selectProvider('anthropic');
});
expect(value().modelId).toBe('');
expect(value().canSend).toBe(false);
// Send stays disabled until the new exact provider-B tuple persists.
await act(async () => {
value().selectModel('anthropic', 'claude');
});
await flush();
expect(value().canSend).toBe(true);
expect(value().persistedSelection).toEqual({
harnessId: 'pi',
providerId: 'anthropic',
modelId: 'claude',
});
expect(value().projection).toEqual({ provider: 'anthropic', modelId: 'claude' });
});
it('does not enable send on a model pick until the PUT for that exact new tuple resolves', async () => {
installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: PI_CATALOG },
selection: { harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' },
deferPut: true,
});
await mount();
// The persisted, in-catalog tuple is sendable after mount (no PUT needed).
expect(value().canSend).toBe(true);
await act(async () => {
value().selectProvider('anthropic');
});
expect(value().modelId).toBe('');
expect(value().canSend).toBe(false);
await act(async () => {
value().selectModel('anthropic', 'claude');
});
await flush();
// PUT for the new tuple is still in flight — send MUST stay disabled.
expect(value().canSend).toBe(false);
await act(async () => {
putDeferred?.resolve(
json({ selection: { harnessId: 'pi', providerId: 'anthropic', modelId: 'claude' } }),
);
});
await flush();
expect(value().canSend).toBe(true);
expect(value().projection).toEqual({ provider: 'anthropic', modelId: 'claude' });
});
it('never requests any /api/providers* endpoint across the whole flow', async () => {
const fetchMock = installFetch({
harnesses: [{ id: 'pi', displayName: 'Pi', capabilities: [] }],
catalog: { body: PI_CATALOG },
selection: { harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' },
});
await mount();
await act(async () => {
value().selectProvider('anthropic');
});
await act(async () => {
value().selectModel('anthropic', 'claude');
});
await flush();
for (const call of fetchMock.mock.calls) {
expect(String(call[0])).not.toContain('/api/providers');
}
});
});
@@ -1,216 +0,0 @@
import { useCallback, useEffect, useRef, useState } from 'react';
import {
fetchCatalog,
fetchHarnesses,
fetchPersistedSelection,
persistSelection,
type SelectionErrorCode,
} from './chat-api';
import type { HarnessCatalog, HarnessSelection, HarnessSummary } from '@/lib/types';
export interface HarnessPersistError {
code: SelectionErrorCode;
message: string;
/** The exact tuple the user requested — preserved so the failed selection
* stays visible rather than being silently dropped. */
requested: HarnessSelection;
}
export interface HarnessSelectionValue {
harnesses: HarnessSummary[];
catalog: HarnessCatalog | null;
/** True when the selected harness has no usable catalog (404/error). */
catalogUnavailable: boolean;
/** The working (displayed) selection, kept as three distinct ids. Empty
* strings mean "not chosen yet" — there is deliberately no first-row default. */
harnessId: string;
providerId: string;
modelId: string;
/** The last tuple confirmed persisted by the server, or null. */
persistedSelection: HarnessSelection | null;
/** True when a persisted selection references a model no longer present as an
* available catalog entry — it stays visibly displayed rather than dropped. */
isStale: boolean;
/** True ONLY once a full tuple has been confirmed persisted AND it is a
* currently-available catalog entry. Send stays disabled otherwise, so a send
* can never race ahead of successful persistence. */
canSend: boolean;
persistError: HarnessPersistError | null;
selectHarness: (harnessId: string) => void;
selectProvider: (providerId: string) => void;
/** Persist the EXACT catalog row's `{providerId, modelId}` — the caller
* resolves the composite option identity to the real entry and passes both
* ids, so a bare model id is never combined with ambient provider state. */
selectModel: (providerId: string, modelId: string) => void;
/** The compatibility `{provider, modelId}` projection for the legacy socket
* send path — derived ONLY from the validated persisted tuple, never from any
* free-text or unpersisted draft. Empty when nothing is sendable. */
projection: { provider?: string; modelId?: string };
}
/** A tuple is a currently-usable catalog option only when the catalog holds a
* matching, available entry — the single gate that keeps a stale/unavailable
* model from ever counting as sendable. */
function isAvailableInCatalog(
selection: HarnessSelection | null,
catalog: HarnessCatalog | null,
): boolean {
if (selection === null || catalog === null) return false;
return catalog.models.some(
(model) =>
model.providerId === selection.providerId &&
model.modelId === selection.modelId &&
model.availability === 'available',
);
}
function tuplesEqual(a: HarnessSelection | null, b: HarnessSelection | null): boolean {
if (a === null || b === null) return a === b;
return a.harnessId === b.harnessId && a.providerId === b.providerId && a.modelId === b.modelId;
}
/**
* Owns the harness/catalog/selection state for the chat composer: loads the
* harness list and any persisted tuple on mount, loads a harness's catalog when
* chosen, and PUT-persists the full `{harnessId, providerId, modelId}` tuple
* when a model is picked. It never auto-selects a catalog row, keeps a
* stale/unavailable persisted tuple visible, and only reports `canSend` true
* once a full tuple has actually persisted as an available catalog entry.
*/
export function useHarnessSelection(): HarnessSelectionValue {
const [harnesses, setHarnesses] = useState<HarnessSummary[]>([]);
const [catalog, setCatalog] = useState<HarnessCatalog | null>(null);
const [catalogUnavailable, setCatalogUnavailable] = useState(false);
const [harnessId, setHarnessId] = useState('');
const [providerId, setProviderId] = useState('');
const [modelId, setModelId] = useState('');
const [persistedSelection, setPersistedSelection] = useState<HarnessSelection | null>(null);
const [persistError, setPersistError] = useState<HarnessPersistError | null>(null);
// Monotonic request ids so a slow in-flight catalog/persist response can never
// overwrite the result of a newer request the user has since triggered.
const catalogRequestRef = useRef(0);
const persistRequestRef = useRef(0);
const loadCatalog = useCallback(async (id: string): Promise<void> => {
const requestId = catalogRequestRef.current + 1;
catalogRequestRef.current = requestId;
setCatalog(null);
setCatalogUnavailable(false);
const result = await fetchCatalog(id);
if (catalogRequestRef.current !== requestId) return;
if (result.ok) {
setCatalog(result.catalog);
setCatalogUnavailable(false);
} else {
setCatalog(null);
setCatalogUnavailable(true);
}
}, []);
useEffect(() => {
let active = true;
void (async (): Promise<void> => {
const [list, persisted] = await Promise.all([fetchHarnesses(), fetchPersistedSelection()]);
if (!active) return;
setHarnesses(list);
if (persisted !== null) {
// Adopt the persisted tuple as the displayed selection and load its
// catalog. If the model has since been retired, it still shows (stale).
setHarnessId(persisted.harnessId);
setProviderId(persisted.providerId);
setModelId(persisted.modelId);
setPersistedSelection(persisted);
await loadCatalog(persisted.harnessId);
}
// No persisted selection → nothing is auto-selected; the user must choose.
})();
return () => {
active = false;
};
}, [loadCatalog]);
const selectHarness = useCallback(
(id: string): void => {
setHarnessId(id);
// Changing harness invalidates the provider/model draft — never carry a
// model across harnesses.
setProviderId('');
setModelId('');
setPersistError(null);
void loadCatalog(id);
},
[loadCatalog],
);
const selectProvider = useCallback((id: string): void => {
setProviderId(id);
// A new provider invalidates the chosen model — no cross-provider carryover.
setModelId('');
setPersistError(null);
}, []);
const selectModel = useCallback(
(selectedProviderId: string, selectedModelId: string): void => {
// Bind the model to the EXACT catalog row's provider — never to ambient
// provider state — so two providers exposing the same modelId can never
// collide or mis-resolve. Keep the displayed provider consistent with the
// resolved row.
setProviderId(selectedProviderId);
setModelId(selectedModelId);
setPersistError(null);
const requested: HarnessSelection = {
harnessId,
providerId: selectedProviderId,
modelId: selectedModelId,
};
const requestId = persistRequestRef.current + 1;
persistRequestRef.current = requestId;
void (async (): Promise<void> => {
const result = await persistSelection(requested);
if (persistRequestRef.current !== requestId) return;
if (result.ok) {
setPersistedSelection(result.selection);
setPersistError(null);
} else {
// Leave persistedSelection unchanged (send stays disabled) and surface
// the typed error carrying the exact requested tuple.
setPersistError({
code: result.code,
message: result.message,
requested: result.requested,
});
}
})();
},
[harnessId],
);
const draft: HarnessSelection = { harnessId, providerId, modelId };
const isStale = persistedSelection !== null && !isAvailableInCatalog(persistedSelection, catalog);
const canSend =
persistedSelection !== null &&
!catalogUnavailable &&
tuplesEqual(draft, persistedSelection) &&
isAvailableInCatalog(persistedSelection, catalog);
const projection: { provider?: string; modelId?: string } = canSend
? { provider: persistedSelection.providerId, modelId: persistedSelection.modelId }
: {};
return {
harnesses,
catalog,
catalogUnavailable,
harnessId,
providerId,
modelId,
persistedSelection,
isStale,
canSend,
persistError,
selectHarness,
selectProvider,
selectModel,
projection,
};
}
+7 -285
View File
@@ -38,76 +38,6 @@ function findButton(container: HTMLElement, text: string): HTMLButtonElement {
return button;
}
function jsonResponse(body: unknown, status = 200): Response {
return new Response(JSON.stringify(body), {
status,
headers: { 'Content-Type': 'application/json' },
});
}
const DEFAULT_CATALOG = {
harnessId: 'pi',
version: '2026-08-11',
fingerprint: 'fp',
models: [
{
harnessId: 'pi',
providerId: 'openai',
modelId: 'gpt-5',
displayName: 'GPT-5',
reasoningCapability: true,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
{
harnessId: 'pi',
providerId: 'anthropic',
modelId: 'claude',
displayName: 'Claude',
reasoningCapability: true,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
],
};
/** A harness/catalog/selection HTTP stub for the chat-api the selection hook
* drives. `selection` seeds the persisted tuple returned by the GET (a valid
* in-catalog tuple by default, so `canSend` settles true after mount). */
function harnessFetch(
selection: unknown = { harnessId: 'pi', providerId: 'openai', modelId: 'gpt-5' },
): typeof fetch {
return vi.fn(async (input: unknown, init?: RequestInit) => {
const url = String(input);
const method = String(init?.method ?? 'GET').toUpperCase();
if (url === '/api/harnesses') {
return jsonResponse([{ id: 'pi', displayName: 'Pi', capabilities: [] }]);
}
if (url.startsWith('/api/harnesses/') && url.endsWith('/catalog')) {
return jsonResponse(DEFAULT_CATALOG);
}
if (url === '/api/chat/preferences/selection' && method === 'GET') {
return jsonResponse({ selection });
}
if (url === '/api/chat/preferences/selection' && method === 'PUT') {
return jsonResponse({ selection: JSON.parse(String(init?.body)) });
}
return new Response('not found', { status: 404 });
}) as unknown as typeof fetch;
}
/** Drains the selection hook's chained mount fetches (harnesses → selection →
* catalog) and any pending PUT so derived `canSend` settles before assertions. */
async function flushAsync(times = 5): Promise<void> {
for (let i = 0; i < times; i += 1) {
await act(async () => {
await Promise.resolve();
});
}
}
let fake: ReturnType<typeof createFakeChatSocket>;
let root: Root | null;
let container: HTMLElement;
@@ -127,16 +57,12 @@ beforeEach(async () => {
fake = createFakeChatSocket();
getSocketMock.mockReset().mockReturnValue(fake.socket);
destroySocketMock.mockReset();
vi.stubGlobal('fetch', harnessFetch());
container = document.createElement('div');
document.body.append(container);
root = createRoot(container);
await act(async () => {
root?.render(<ChatPage />);
});
// Settle the selection hook's mount fetches so the default in-catalog tuple
// persists and `canSend` is true for the existing send-path tests.
await flushAsync();
});
afterEach(async () => {
@@ -144,23 +70,8 @@ afterEach(async () => {
root?.unmount();
});
document.body.replaceChildren();
vi.unstubAllGlobals();
});
/** Re-mounts ChatPage against a custom fetch stub (e.g. an unset selection) for
* tests that need a non-default selection scenario. */
async function remountWithFetch(fetchImpl: typeof fetch): Promise<void> {
await act(async () => {
root?.unmount();
});
vi.stubGlobal('fetch', fetchImpl);
root = createRoot(container);
await act(async () => {
root?.render(<ChatPage />);
});
await flushAsync();
}
describe('ChatPage', () => {
it('streams agent:text and agent:thinking, shows tool status, and finalizes on agent:end with usage', async () => {
await act(async () => {
@@ -479,62 +390,24 @@ describe('ChatPage', () => {
expect(container.querySelector('[role="alert"]')).toBeTruthy();
});
it('renders harness and provider as separate selects (not merged) and no free-text provider/model inputs', async () => {
// The old free-text inputs are gone.
expect(container.querySelector('input[aria-label="Provider"]')).toBeNull();
expect(container.querySelector('input[aria-label="Model"]')).toBeNull();
const harnessSelect = container.querySelector(
'select[aria-label="Harness"]',
) as HTMLSelectElement;
const providerSelect = container.querySelector(
'select[aria-label="Provider"]',
) as HTMLSelectElement;
const modelSelect = container.querySelector('select[aria-label="Model"]') as HTMLSelectElement;
expect(harnessSelect).toBeTruthy();
expect(providerSelect).toBeTruthy();
expect(modelSelect).toBeTruthy();
// Harness and provider are distinct controls carrying distinct identifiers.
expect(harnessSelect).not.toBe(providerSelect);
expect([...harnessSelect.options].map((o) => o.value)).toContain('pi');
expect([...providerSelect.options].map((o) => o.value)).toContain('openai');
expect([...providerSelect.options].map((o) => o.value)).toContain('anthropic');
// The model options are catalog-derived (not hardcoded) and scoped to the
// selected provider (openai, from the persisted tuple) using a collision-safe
// composite identity — the anthropic row is absent, not a bare 'claude'.
const modelValues = [...modelSelect.options].map((o) => o.value);
expect(modelValues).toContain('openai:gpt-5');
expect(modelValues).not.toContain('anthropic:claude');
expect(modelValues).not.toContain('claude');
});
it('sends provider/model derived from the persisted catalog tuple (never free text) and emits abort from Stop', async () => {
it('sends a message with optional provider/model fields and emits abort from the Stop control', async () => {
const textarea = container.querySelector(
'textarea[aria-label="Message"]',
) as HTMLTextAreaElement;
const providerInput = container.querySelector(
'input[aria-label="Provider"]',
) as HTMLInputElement;
const modelInput = container.querySelector('input[aria-label="Model"]') as HTMLInputElement;
const stopButtonBefore = container.querySelector(
'button[aria-label="Stop"]',
) as HTMLButtonElement;
expect(stopButtonBefore.disabled).toBe(true);
// Choose a fresh tuple from the catalog and let it persist.
const providerSelect = container.querySelector(
'select[aria-label="Provider"]',
) as HTMLSelectElement;
await act(async () => {
selectValue(providerSelect, 'anthropic');
});
const modelSelect = container.querySelector('select[aria-label="Model"]') as HTMLSelectElement;
await act(async () => {
// Composite provider+model option identity (provider was switched to
// anthropic above); the bare 'claude' no longer identifies an option.
selectValue(modelSelect, 'anthropic:claude');
});
await flushAsync();
await act(async () => {
setValue(textarea, 'hello there');
setValue(providerInput, 'anthropic');
setValue(modelInput, 'claude');
});
await act(async () => {
textarea.dispatchEvent(
@@ -542,7 +415,6 @@ describe('ChatPage', () => {
);
});
// The projected provider/model come from the validated persisted tuple.
expect(fake.emitted).toContainEqual({
event: 'message',
payload: {
@@ -571,28 +443,6 @@ describe('ChatPage', () => {
expect(fake.emitted).toContainEqual({ event: 'abort', payload: { conversationId: 'c1' } });
});
it('disables send until a selection has persisted — no send with an unset selection', async () => {
await remountWithFetch(harnessFetch(null));
const sendButton = findButton(container, 'Send');
const textarea = container.querySelector(
'textarea[aria-label="Message"]',
) as HTMLTextAreaElement;
await act(async () => {
setValue(textarea, 'should not send');
});
// Content present, but no selection persisted → Send stays disabled.
expect(sendButton.disabled).toBe(true);
await act(async () => {
textarea.dispatchEvent(
new KeyboardEvent('keydown', { key: 'Enter', bubbles: true, cancelable: true }),
);
});
expect(fake.emitted.filter((e) => e.event === 'message')).toHaveLength(0);
});
it('renders the session panel from a pre-ack session:info and keeps it visible after the later ack', async () => {
const textarea = container.querySelector(
'textarea[aria-label="Message"]',
@@ -770,134 +620,6 @@ describe('ChatPage', () => {
expect(fake.emitted.filter((e) => e.event === 'message')).toHaveLength(1);
});
it('scopes the model options to the intentionally selected provider (cross-provider models absent)', async () => {
await remountWithFetch(harnessFetch(null));
const harnessSelect = container.querySelector(
'select[aria-label="Harness"]',
) as HTMLSelectElement;
await act(async () => {
selectValue(harnessSelect, 'pi');
});
await flushAsync();
const providerSelect = container.querySelector(
'select[aria-label="Provider"]',
) as HTMLSelectElement;
await act(async () => {
selectValue(providerSelect, 'openai');
});
const modelSelect = container.querySelector('select[aria-label="Model"]') as HTMLSelectElement;
const optionValues = [...modelSelect.options].map((o) => o.value).filter((v) => v !== '');
// Only the selected provider's models are offered — provider B's model
// (anthropic:claude) is absent, so a user cannot pick across providers.
expect(optionValues).toEqual(['openai:gpt-5']);
expect(optionValues).not.toContain('anthropic:claude');
});
it('keeps identical modelIds under two providers distinct and resolves the pick to the exact tuple', async () => {
const COLLIDING_CATALOG = {
harnessId: 'pi',
version: '2026-08-11',
fingerprint: 'fp',
models: [
{
harnessId: 'pi',
providerId: 'alpha',
modelId: 'gpt-x',
displayName: 'Alpha GPT-X',
reasoningCapability: true,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
{
harnessId: 'pi',
providerId: 'beta',
modelId: 'gpt-x',
displayName: 'Beta GPT-X',
reasoningCapability: true,
inputTypes: ['text'],
authState: 'ready',
availability: 'available',
},
],
};
const collidingFetch = vi.fn(async (input: unknown, init?: RequestInit) => {
const url = String(input);
const method = String(init?.method ?? 'GET').toUpperCase();
if (url === '/api/harnesses') {
return jsonResponse([{ id: 'pi', displayName: 'Pi', capabilities: [] }]);
}
if (url.startsWith('/api/harnesses/') && url.endsWith('/catalog')) {
return jsonResponse(COLLIDING_CATALOG);
}
if (url === '/api/chat/preferences/selection' && method === 'GET') {
return jsonResponse({ selection: null });
}
if (url === '/api/chat/preferences/selection' && method === 'PUT') {
return jsonResponse({ selection: JSON.parse(String(init?.body)) });
}
return new Response('not found', { status: 404 });
}) as unknown as typeof fetch;
await remountWithFetch(collidingFetch);
const harnessSelect = container.querySelector(
'select[aria-label="Harness"]',
) as HTMLSelectElement;
await act(async () => {
selectValue(harnessSelect, 'pi');
});
await flushAsync();
const providerSelect = container.querySelector(
'select[aria-label="Provider"]',
) as HTMLSelectElement;
await act(async () => {
selectValue(providerSelect, 'alpha');
});
const modelSelect = container.querySelector('select[aria-label="Model"]') as HTMLSelectElement;
// The colliding modelId is provider-qualified in the option value, never a
// bare id, so the two providers' 'gpt-x' rows are uniquely identifiable.
const optionValues = [...modelSelect.options].map((o) => o.value).filter((v) => v !== '');
expect(optionValues).toEqual(['alpha:gpt-x']);
await act(async () => {
selectValue(modelSelect, 'alpha:gpt-x');
});
await flushAsync();
// The controlled select highlights the alpha row via the composite identity.
expect(modelSelect.value).toBe('alpha:gpt-x');
const textarea = container.querySelector(
'textarea[aria-label="Message"]',
) as HTMLTextAreaElement;
await act(async () => {
setValue(textarea, 'ping');
});
await act(async () => {
textarea.dispatchEvent(
new KeyboardEvent('keydown', { key: 'Enter', bubbles: true, cancelable: true }),
);
});
// The persisted/sent tuple resolves to provider alpha — NOT beta — even
// though the bare modelId 'gpt-x' exists under both providers.
expect(fake.emitted).toContainEqual({
event: 'message',
payload: {
conversationId: undefined,
content: 'ping',
provider: 'alpha',
modelId: 'gpt-x',
},
});
});
it('removes socket handlers and tears down the socket on unmount, with no network calls', async () => {
expect(fake.listeners.size).toBeGreaterThan(0);
-3
View File
@@ -6,7 +6,6 @@ import { asFiniteNumberOrNull, asString } from '@/spa/chat/runtime-guards';
import { SessionPanel } from '@/spa/chat/session-panel';
import { ToolCallList } from '@/spa/chat/tool-call-list';
import { useChatConnection } from '@/spa/chat/use-chat-connection';
import { useHarnessSelection } from '@/spa/chat/use-harness-selection';
/** Renders a real value normally, but an honest "unavailable" label instead
* of a fabricated `0` for a missing/malformed count — a real `0 tokens` and
@@ -24,7 +23,6 @@ function formatCost(value: unknown): string {
export function ChatPage(): ReactElement {
const { state, actions } = useChatConnection();
const harness = useHarnessSelection();
const hasConversation = state.conversationId !== null;
return (
@@ -88,7 +86,6 @@ export function ChatPage(): ReactElement {
streaming={state.streaming}
sending={state.sending}
hasConversation={hasConversation}
harness={harness}
/>
</div>
);
@@ -1,317 +0,0 @@
import { describe, expect, expectTypeOf, it } from 'vitest';
import { HARNESS_CAPABILITIES, HARNESS_ERROR_CODES } from './index.js';
import type {
AttachConversation,
ConversationSnapshot,
CreateHarnessSession,
HarnessAdapter,
HarnessCapability,
HarnessConversationService,
HarnessDescriptor,
HarnessError,
HarnessErrorCode,
HarnessEvent,
HarnessEventEnvelope,
HarnessInteractionState,
HarnessPrompt,
HarnessPromptReceipt,
HarnessSelection,
HarnessSessionHandle,
HarnessSessionSnapshot,
ResumeHarnessSession,
SendHarnessTurn,
TurnReceipt,
} from '../index.js';
const EXPECTED_CAPABILITIES = [
'modelSelection',
'thinkingLevels',
'images',
'toolEvents',
'extensionUi',
'steering',
'followUp',
'compaction',
'persistentResume',
] as const satisfies readonly HarnessCapability[];
const EXPECTED_ERROR_CODES = [
'auth_required',
'selection_invalid',
'catalog_unavailable',
'catalog_stale',
'model_unavailable',
'no_viable_provider',
'session_create_failed',
'session_not_found',
'resume_conflict',
'session_busy',
'auth_bundle_concurrency_unverified',
'adapter_unavailable',
'sandbox_unavailable',
'rpc_version_unsupported',
'rpc_protocol_error',
'process_exited',
'outcome_unknown',
'interaction_unsupported',
'aborted',
] as const satisfies readonly HarnessErrorCode[];
function assertNever(value: never): never {
throw new Error(`Unexpected contract variant: ${JSON.stringify(value)}`);
}
function describeEvent(event: HarnessEvent): string {
switch (event.type) {
case 'session.started':
case 'session.state':
case 'session.identity_changed':
case 'turn.started':
case 'text.delta':
case 'thinking.delta':
case 'tool.started':
case 'tool.updated':
case 'tool.finished':
case 'interaction.required':
case 'usage.updated':
case 'turn.completed':
case 'error':
return event.type;
default:
return assertNever(event);
}
}
function describeError(error: HarnessError): HarnessErrorCode {
switch (error.code) {
case 'auth_required':
case 'selection_invalid':
case 'catalog_unavailable':
case 'catalog_stale':
case 'model_unavailable':
case 'no_viable_provider':
case 'session_create_failed':
case 'session_not_found':
case 'resume_conflict':
case 'session_busy':
case 'auth_bundle_concurrency_unverified':
case 'adapter_unavailable':
case 'sandbox_unavailable':
case 'rpc_version_unsupported':
case 'rpc_protocol_error':
case 'process_exited':
case 'outcome_unknown':
case 'interaction_unsupported':
case 'aborted':
return error.code;
default:
return assertNever(error);
}
}
describe('generic harness contracts', (): void => {
it('keeps harness, provider, model, conversation, native session, process, and seat separate', (): void => {
const selection = {
harnessId: 'pi',
providerId: 'openai-codex',
modelId: 'gpt-5-codex',
} satisfies HarnessSelection;
const snapshot = {
conversationId: 'conversation-1',
nativeSessionId: 'native-session-1',
processId: 'process-1',
seatId: 'seat-1',
selection,
state: 'idle',
attachedClientIds: ['browser-1'],
} satisfies HarnessSessionSnapshot;
const identifiers = [
snapshot.selection.harnessId,
snapshot.selection.providerId,
snapshot.selection.modelId,
snapshot.conversationId,
snapshot.nativeSessionId,
snapshot.processId,
snapshot.seatId,
];
expect(new Set(identifiers).size).toBe(7);
expect(snapshot).toMatchObject({
conversationId: 'conversation-1',
nativeSessionId: 'native-session-1',
processId: 'process-1',
seatId: 'seat-1',
selection,
});
});
it('advertises the complete capability set as checked literals', (): void => {
const descriptor = {
id: 'pi',
displayName: 'Pi',
capabilities: HARNESS_CAPABILITIES,
} satisfies HarnessDescriptor;
expect(HARNESS_CAPABILITIES).toEqual(EXPECTED_CAPABILITIES);
expect(descriptor.capabilities).toEqual(EXPECTED_CAPABILITIES);
});
it('exposes every stable error code as an exhaustive discriminated union', (): void => {
const selection: HarnessSelection = {
harnessId: 'pi',
providerId: 'openai-codex',
modelId: 'gpt-5-codex',
};
const error: HarnessError = {
code: 'model_unavailable',
message: 'The selected model is unavailable.',
retryable: true,
correlationId: 'correlation-1',
selection,
};
expect(HARNESS_ERROR_CODES).toEqual(EXPECTED_ERROR_CODES);
expect(describeError(error)).toBe('model_unavailable');
const receipt = {
conversationId: 'conversation-1',
turnId: 'turn-1',
correlationId: 'correlation-1',
state: 'accepted',
selection,
} satisfies HarnessPromptReceipt;
expect(error.selection).toEqual(selection);
expect(receipt.selection).toEqual(selection);
expect('effectiveSelection' in error).toBe(false);
expect('effectiveSelection' in receipt).toBe(false);
});
it('wraps every normalized event variant in the persisted envelope', (): void => {
const selection: HarnessSelection = {
harnessId: 'pi',
providerId: 'openai-codex',
modelId: 'gpt-5-codex',
};
const toolStarted: HarnessEvent = {
type: 'tool.started',
toolCallId: 'tool-call-1',
toolName: 'read',
};
const events: readonly HarnessEvent[] = [
{ type: 'session.started', state: 'idle' },
{ type: 'session.state', state: 'busy' },
{
type: 'session.identity_changed',
identityGeneration: 2,
label: 'Re-enrolled account',
},
{ type: 'turn.started' },
{ type: 'text.delta', text: 'Hello' },
{ type: 'thinking.delta', text: 'Reasoning' },
toolStarted,
{
type: 'tool.updated',
toolCallId: 'tool-call-1',
toolName: 'read',
message: 'Reading',
},
{
type: 'tool.finished',
toolCallId: 'tool-call-1',
toolName: 'read',
isError: false,
},
{
type: 'interaction.required',
requestId: 'interaction-1',
interactionType: 'confirm',
state: 'pending',
prompt: 'Continue?',
},
{
type: 'usage.updated',
usage: { inputTokens: 10, outputTokens: 5, totalTokens: 15 },
},
{ type: 'turn.completed', outcome: 'settled' },
{
type: 'error',
error: {
code: 'rpc_protocol_error',
message: 'The harness protocol failed.',
retryable: false,
correlationId: 'correlation-1',
selection,
},
},
];
const envelope: HarnessEventEnvelope = {
conversationId: 'conversation-1',
nativeSessionId: 'native-session-1',
turnId: 'turn-1',
correlationId: 'correlation-1',
sequence: 42,
nativeEntryCursor: 'native-entry-7',
occurredAt: '2026-08-11T12:00:00.000Z',
harnessId: 'pi',
selection,
event: toolStarted,
};
expect(events.map(describeEvent)).toEqual([
'session.started',
'session.state',
'session.identity_changed',
'turn.started',
'text.delta',
'thinking.delta',
'tool.started',
'tool.updated',
'tool.finished',
'interaction.required',
'usage.updated',
'turn.completed',
'error',
]);
expect(envelope).toMatchObject({
conversationId: 'conversation-1',
nativeSessionId: 'native-session-1',
turnId: 'turn-1',
correlationId: 'correlation-1',
sequence: 42,
nativeEntryCursor: 'native-entry-7',
harnessId: 'pi',
selection,
event: toolStarted,
});
});
it('models the complete one-response interaction lifecycle', (): void => {
const states = [
'pending',
'responded',
'cancelled',
'expired',
] as const satisfies readonly HarnessInteractionState[];
expect(states).toEqual(['pending', 'responded', 'cancelled', 'expired']);
});
it('preserves the approved adapter and conversation method signatures', (): void => {
expectTypeOf<HarnessAdapter['create']>().toEqualTypeOf<
(input: CreateHarnessSession) => Promise<HarnessSessionHandle>
>();
expectTypeOf<HarnessAdapter['resume']>().toEqualTypeOf<
(input: ResumeHarnessSession) => Promise<HarnessSessionHandle>
>();
expectTypeOf<HarnessSessionHandle['prompt']>().toEqualTypeOf<
(input: HarnessPrompt & { idempotencyKey: string }) => Promise<HarnessPromptReceipt>
>();
expectTypeOf<HarnessConversationService['attach']>().toEqualTypeOf<
(input: AttachConversation & { afterSequence?: number }) => Promise<ConversationSnapshot>
>();
expectTypeOf<HarnessConversationService['send']>().toEqualTypeOf<
(input: SendHarnessTurn & { idempotencyKey: string }) => Promise<TurnReceipt>
>();
});
});
-204
View File
@@ -1,204 +0,0 @@
import type { HarnessCapability, HarnessEvent, HarnessEventEnvelope } from './events.js';
/** Server-derived actor and seat authority. Browser input must not supply these values. */
export interface HarnessActorContext {
readonly actorId: string;
readonly tenantId: string;
readonly seatId: string;
readonly correlationId: string;
}
/** Exact harness/provider/model tuple. These concepts must never be merged into one identifier. */
export interface HarnessSelection {
readonly harnessId: string;
readonly providerId: string;
readonly modelId: string;
}
export interface HarnessDescriptor {
readonly id: string;
readonly displayName: string;
readonly capabilities: readonly HarnessCapability[];
}
export type HarnessInputType = 'text' | 'image';
export type HarnessAuthState = 'ready' | 'auth_required' | 'unavailable';
export type HarnessModelAvailability = 'available' | 'unavailable';
export interface HarnessCatalogEntry extends HarnessSelection {
readonly displayName: string;
readonly reasoningCapability: boolean;
readonly thinkingLevels?: readonly string[];
readonly inputTypes: readonly HarnessInputType[];
readonly contextWindow?: number;
readonly authState: HarnessAuthState;
readonly availability: HarnessModelAvailability;
}
export interface HarnessCatalog {
readonly harnessId: string;
readonly version: string;
readonly fingerprint: string;
readonly models: readonly HarnessCatalogEntry[];
}
export interface CreateHarnessSession {
readonly context: HarnessActorContext;
readonly conversationId: string;
readonly selection: HarnessSelection;
}
export interface ResumeHarnessSession {
readonly context: HarnessActorContext;
readonly conversationId: string;
readonly nativeSessionId: string;
readonly selection: HarnessSelection;
}
export type HarnessSessionState = 'starting' | 'idle' | 'busy' | 'evicted' | 'ended' | 'failed';
export interface HarnessSessionSnapshot {
readonly conversationId: string;
readonly nativeSessionId: string;
/** Absent when the resumable native session has no active process. */
readonly processId?: string;
readonly seatId: string;
readonly selection: HarnessSelection;
readonly state: HarnessSessionState;
readonly attachedClientIds: readonly string[];
}
export interface AttachClient {
readonly clientId: string;
}
export interface HarnessPrompt {
readonly turnId: string;
readonly correlationId: string;
readonly content: string;
}
export type HarnessTurnState =
| 'prepared'
| 'dispatching'
| 'accepted'
| 'streaming'
| 'settled'
| 'failed'
| 'aborted'
| 'interrupted'
| 'outcome_unknown';
/** A successful receipt reports only the selected tuple; no substitute tuple is representable. */
export interface HarnessPromptReceipt {
readonly conversationId: string;
readonly turnId: string;
readonly correlationId: string;
readonly state: HarnessTurnState;
readonly selection: HarnessSelection;
}
export interface HarnessConfirmInteractionResponse {
readonly requestId: string;
readonly type: 'confirm';
readonly accepted: boolean;
}
export interface HarnessSelectInteractionResponse {
readonly requestId: string;
readonly type: 'select';
readonly value: string;
}
export interface HarnessInputInteractionResponse {
readonly requestId: string;
readonly type: 'input';
readonly value: string;
}
export interface HarnessEditorInteractionResponse {
readonly requestId: string;
readonly type: 'editor';
readonly value: string;
}
export interface HarnessCancelInteractionResponse {
readonly requestId: string;
readonly type: 'cancel';
}
export type HarnessInteractionResponse =
| HarnessConfirmInteractionResponse
| HarnessSelectInteractionResponse
| HarnessInputInteractionResponse
| HarnessEditorInteractionResponse
| HarnessCancelInteractionResponse;
export type HarnessCloseReason =
| 'client_request'
| 'idle_timeout'
| 'gateway_shutdown'
| 'process_crash'
| 'composition_changed'
| 'session_ended';
export interface AttachConversation {
readonly context: HarnessActorContext;
readonly conversationId: string;
readonly clientId: string;
readonly selection: HarnessSelection;
}
export interface ConversationSnapshot {
readonly session: HarnessSessionSnapshot;
readonly lastSequence: number;
/** Journal rows replayed after the caller's sequence, never best-effort socket history. */
readonly replay: readonly HarnessEventEnvelope[];
}
export interface DetachConversation {
readonly context: HarnessActorContext;
readonly conversationId: string;
readonly clientId: string;
}
export interface SendHarnessTurn extends HarnessPrompt {
readonly context: HarnessActorContext;
readonly conversationId: string;
readonly selection: HarnessSelection;
}
export interface TurnReceipt extends HarnessPromptReceipt {}
export interface HarnessAdapter {
readonly id: string;
describe(context: HarnessActorContext): Promise<HarnessDescriptor>;
catalog(context: HarnessActorContext): Promise<HarnessCatalog>;
create(input: CreateHarnessSession): Promise<HarnessSessionHandle>;
resume(input: ResumeHarnessSession): Promise<HarnessSessionHandle>;
}
export interface HarnessSessionHandle {
snapshot(): Promise<HarnessSessionSnapshot>;
attach(input: AttachClient): Promise<void>;
/** Removes a browser attachment; it does not terminate the process or native session. */
detach(clientId: string): Promise<void>;
prompt(input: HarnessPrompt & { idempotencyKey: string }): Promise<HarnessPromptReceipt>;
setModel(selection: HarnessSelection): Promise<HarnessSelection>;
abort(turnId: string): Promise<void>;
respondInteraction(input: HarnessInteractionResponse): Promise<void>;
events(listener: (event: HarnessEvent) => void): () => void;
/** Stops the active process while retaining the resumable native session. */
evictProcess(reason: HarnessCloseReason): Promise<void>;
/** Explicitly and destructively ends the native session. */
endSession(reason: HarnessCloseReason): Promise<void>;
}
export interface HarnessConversationService {
attach(input: AttachConversation & { afterSequence?: number }): Promise<ConversationSnapshot>;
/** Removes only the browser attachment represented by the input. */
detach(input: DetachConversation): Promise<void>;
send(input: SendHarnessTurn & { idempotencyKey: string }): Promise<TurnReceipt>;
/** Replays persisted Gateway journal rows after the supplied monotonic sequence. */
subscribeFrom(conversationId: string, afterSequence: number): AsyncIterable<HarnessEventEnvelope>;
}
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import type { HarnessSelection } from './contracts.js';
export const HARNESS_ERROR_CODES = [
'auth_required',
'selection_invalid',
'catalog_unavailable',
'catalog_stale',
'model_unavailable',
'no_viable_provider',
'session_create_failed',
'session_not_found',
'resume_conflict',
'session_busy',
'auth_bundle_concurrency_unverified',
'adapter_unavailable',
'sandbox_unavailable',
'rpc_version_unsupported',
'rpc_protocol_error',
'process_exited',
'outcome_unknown',
'interaction_unsupported',
'aborted',
] as const satisfies readonly string[];
export type HarnessErrorCode = (typeof HARNESS_ERROR_CODES)[number];
export interface HarnessErrorDto<Code extends HarnessErrorCode = HarnessErrorCode> {
readonly code: Code;
/** Safe for browser and operator-facing surfaces. */
readonly message: string;
readonly retryable: boolean;
readonly correlationId: string;
/** The requested selection; errors never report a substituted effective selection. */
readonly selection: HarnessSelection;
}
/** Closed discriminated union over every stable harness error code. */
export type HarnessError = {
readonly [Code in HarnessErrorCode]: HarnessErrorDto<Code>;
}[HarnessErrorCode];
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import type { HarnessError } from './errors.js';
import type { HarnessSelection, HarnessSessionState } from './contracts.js';
export const HARNESS_CAPABILITIES = [
'modelSelection',
'thinkingLevels',
'images',
'toolEvents',
'extensionUi',
'steering',
'followUp',
'compaction',
'persistentResume',
] as const satisfies readonly string[];
export type HarnessCapability = (typeof HARNESS_CAPABILITIES)[number];
/** Durable lifecycle states; later persistence enforces one terminal response per request. */
export type HarnessInteractionState = 'pending' | 'responded' | 'cancelled' | 'expired';
export type HarnessInteractionType = 'confirm' | 'select' | 'input' | 'editor';
export interface HarnessUsage {
readonly inputTokens: number;
readonly outputTokens: number;
readonly totalTokens: number;
}
export type HarnessTurnOutcome =
| 'settled'
| 'failed'
| 'aborted'
| 'interrupted'
| 'outcome_unknown';
export interface HarnessSessionStartedEvent {
readonly type: 'session.started';
readonly state: HarnessSessionState;
}
export interface HarnessSessionStateEvent {
readonly type: 'session.state';
readonly state: HarnessSessionState;
}
export interface HarnessSessionIdentityChangedEvent {
readonly type: 'session.identity_changed';
readonly identityGeneration: number;
readonly label: string;
}
export interface HarnessTurnStartedEvent {
readonly type: 'turn.started';
}
export interface HarnessTextDeltaEvent {
readonly type: 'text.delta';
readonly text: string;
}
export interface HarnessThinkingDeltaEvent {
readonly type: 'thinking.delta';
readonly text: string;
}
export interface HarnessToolStartedEvent {
readonly type: 'tool.started';
readonly toolCallId: string;
readonly toolName: string;
}
export interface HarnessToolUpdatedEvent {
readonly type: 'tool.updated';
readonly toolCallId: string;
readonly toolName: string;
readonly message: string;
}
export interface HarnessToolFinishedEvent {
readonly type: 'tool.finished';
readonly toolCallId: string;
readonly toolName: string;
readonly isError: boolean;
}
export interface HarnessInteractionRequiredEvent {
readonly type: 'interaction.required';
readonly requestId: string;
readonly interactionType: HarnessInteractionType;
readonly state: HarnessInteractionState;
readonly prompt: string;
readonly options?: readonly string[];
}
export interface HarnessUsageUpdatedEvent {
readonly type: 'usage.updated';
readonly usage: HarnessUsage;
}
export interface HarnessTurnCompletedEvent {
readonly type: 'turn.completed';
readonly outcome: HarnessTurnOutcome;
}
export interface HarnessErrorEvent {
readonly type: 'error';
readonly error: HarnessError;
}
export type HarnessEvent =
| HarnessSessionStartedEvent
| HarnessSessionStateEvent
| HarnessSessionIdentityChangedEvent
| HarnessTurnStartedEvent
| HarnessTextDeltaEvent
| HarnessThinkingDeltaEvent
| HarnessToolStartedEvent
| HarnessToolUpdatedEvent
| HarnessToolFinishedEvent
| HarnessInteractionRequiredEvent
| HarnessUsageUpdatedEvent
| HarnessTurnCompletedEvent
| HarnessErrorEvent;
/** Persisted normalized event plus Gateway-owned ordering and native reconciliation metadata. */
export interface HarnessEventEnvelope {
readonly conversationId: string;
readonly nativeSessionId: string;
readonly turnId?: string;
readonly correlationId: string;
/** Monotonic Gateway journal sequence within the conversation. */
readonly sequence: number;
/** Native session-entry cursor when the harness provides one. */
readonly nativeEntryCursor?: string;
readonly occurredAt: string;
readonly harnessId: string;
/** Exact effective selected provider/model tuple; no alternate success selection is exposed. */
readonly selection: HarnessSelection;
readonly event: HarnessEvent;
}
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export * from './contracts.js';
export * from './events.js';
export * from './errors.js';
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@@ -8,4 +8,3 @@ export * from './routing/index.js';
export * from './commands/index.js';
export * from './federation/index.js';
export * from './reflection/index.js';
export * from './harness/index.js';