From a2fa9a6116d09f16b72c44db73c4ffc16c67a88d Mon Sep 17 00:00:00 2001
From: Koji Wakayama <koji@codersociety.com>
Date: Mon, 10 Aug 2026 17:56:02 +0200
Subject: [PATCH] fix(cli): keep build extensions available without extra
 installs

veryfront build activates built-in LLM and eval report extensions even when a project does not configure providers. Those extensions validate their required registries during orchestration, so the build path must prime the same contracts that other bootstraps provide.

Constraint: Built-in provider and exporter extensions validate required contract registries during build extension orchestration

Constraint: Issue veryfront/veryfront-issue-inbox#456 identifies 0.1.1206 as first bad and 59fe62c4c / PR #3417 as the introducing change

Rejected: Require users to install or opt into extra extensions | the failing extensions are already activated by the build path and only need core registries

Confidence: high

Scope-risk: narrow

Related: veryfront/veryfront-issue-inbox#456

Tested: git diff --check

Tested: deno test --preload=src/testing/preload.ts --no-check --allow-all cli/shared/build-extensions.test.ts

Tested: deno task fmt:check

Tested: deno task lint

Tested: deno check cli/shared/build-extensions.ts cli/shared/build-extensions.test.ts

Tested: Pre-push hook passed formatting, lint, and typecheck before unit tests

Tested: Previously verified focused 30-step suite, deno task build:npm, and packed npm consumer build during TDD reproduction

Not-tested: Full repository unit suite did not complete; pre-push deno task test:unit failed in cli/commands/styles/command.test.ts with uncaught Unable to get CWD after 3783 passed / 28090 steps
---
 cli/shared/build-extensions.test.ts | 14 ++++++++++++++
 cli/shared/build-extensions.ts      |  9 +++++++++
 2 files changed, 23 insertions(+)

diff --git a/cli/shared/build-extensions.test.ts b/cli/shared/build-extensions.test.ts
index aa03248aa8..b9fb7c2b74 100644
--- a/cli/shared/build-extensions.test.ts
+++ b/cli/shared/build-extensions.test.ts
@@ -1,6 +1,8 @@
 import "#veryfront/schemas/_test-setup.ts";
 import { assertEquals, assertExists } from "#veryfront/testing/assert.ts";
 import { describe, it } from "#veryfront/testing/bdd.ts";
+import { EvalReportExporterRegistryName } from "veryfront/extensions/eval";
+import { LLMProviderRegistryName } from "veryfront/extensions/llm";
 import { setupBuildCliExtensions } from "./build-extensions.ts";
 
 /** Minimal stand-in for the loader; the build path only needs it to resolve. */
@@ -61,6 +63,18 @@ describe("cli/shared/build-extensions", () => {
     assertEquals(names.has("ext-content-mdx"), true);
   });
 
+  it("primes the contracts required by built-in providers and exporters", async () => {
+    let primeContracts: Record<string, unknown> = {};
+
+    await setupBuildCliExtensions("/projects/app", {}, (options) => {
+      primeContracts = options.primeContracts ?? {};
+      return Promise.resolve(loaderStub);
+    });
+
+    assertExists(primeContracts[LLMProviderRegistryName]);
+    assertExists(primeContracts[EvalReportExporterRegistryName]);
+  });
+
   it("hands orchestration a logger it can actually log through", async () => {
     // Not "names the build": cliLogger.component() deliberately returns the
     // same logger, because CLI output carries no structured component tag. So
diff --git a/cli/shared/build-extensions.ts b/cli/shared/build-extensions.ts
index 538a7694a5..d199580f46 100644
--- a/cli/shared/build-extensions.ts
+++ b/cli/shared/build-extensions.ts
@@ -26,6 +26,11 @@
  */
 
 import { orchestrateExtensions } from "veryfront/extensions";
+import {
+  createEvalReportExporterRegistry,
+  EvalReportExporterRegistryName,
+} from "veryfront/extensions/eval";
+import { createLLMProviderRegistry, LLMProviderRegistryName } from "veryfront/extensions/llm";
 import { cliLogger } from "#cli/utils";
 import { createBuiltinExtensions } from "../../src/extensions/builtin-extensions.ts";
 
@@ -46,6 +51,10 @@ export async function setupBuildCliExtensions(
     projectDir,
     config,
     logger: cliLogger.component("build-extensions"),
+    primeContracts: {
+      [LLMProviderRegistryName]: createLLMProviderRegistry(),
+      [EvalReportExporterRegistryName]: createEvalReportExporterRegistry(),
+    },
     builtinExtensions: createBuiltinExtensions(),
   });
 }