diff --git a/docs/testing.md b/docs/testing.md
index 0b90c687f..548b1867d 100644
--- a/docs/testing.md
+++ b/docs/testing.md
@@ -927,7 +927,7 @@ behavior, and complete CI evidence before merging.
 | `npm run test:focused -- PATH...` | Exact existing test files; compiled boundaries build first, and unmatched paths fail                                    |
 | `npm run test:changed`            | Source tests affected since the merge base with `origin/main`, including committed and dirty changes                    |
 | `npm run test:fast`               | All domain, service, adapter, composition, conformance, and evaluation tests without build                              |
-| `npm run test:boundary`           | Boundary, MCP boundary, process boundary, and process-global projects                                                   |
+| `npm run test:boundary`           | Boundary, CLI boundary, MCP boundary, process boundary, and process-global projects                                     |
 | `npm run test:mcp`                | MCP boundary project                                                                                                    |
 | `npm run test:acceptance`         | Complete compiled CLI and MCP acceptance workflows                                                                      |
 | `npm run test:watch`              | Dirty source tests in watch mode, without build                                                                         |
@@ -989,11 +989,18 @@ Vitest projects use up to two workers, bounded by host parallelism.
 `process-boundary` runs later with serial files because process-tree sampling
 shares host resources. Acceptance and process-global cases use isolated forks
 without serial scheduling. Pure domain/service, composition, conformance,
-evaluation, and MCP boundary projects share module graphs; their tests avoid
-process-global state and keep resource cleanup test-scoped. Each MCP session
-still owns its resources. Adapter, non-MCP boundary, acceptance, and
-process-global projects retain per-file isolation. See `vitest.config.ts` for
-current settings.
+evaluation, CLI boundary, and MCP boundary projects share module graphs. Their
+tests avoid process-global state and keep resource cleanup test-scoped. Each
+MCP session still owns its resources, and CLI cases retain fresh command
+instances or subprocesses. CLI module mocks belong in `tests/process-global/`
+so they keep per-file isolation. Product catalog verification stays with the
+isolated filesystem boundary tests because it loads both source and compiled
+module graphs. Adapter, other boundary, acceptance, and process-global projects
+retain per-file isolation. See `vitest.config.ts` for current settings.
+
+The reused CLI boundary workers cap V8 old space at 384 MiB, based on their
+profiled allocation and cleanup behavior. This encourages collection between
+files; spawned REA processes retain their own heap settings.
 
 Vitest worker limits do not bound subprocesses launched within a test. Bound
 those batches separately so repeated CLI validation cannot oversubscribe the
diff --git a/package.json b/package.json
index 553970a12..3d8d6fdfa 100644
--- a/package.json
+++ b/package.json
@@ -124,14 +124,14 @@
     "test:local": "node scripts/run-development-tests.mjs local",
     "test:fast": "vitest run --project domain --project services --project adapters --project composition --project conformance --project evaluation",
     "pretest:boundary": "npm run test:prepare",
-    "test:boundary": "vitest run --project boundary --project process-boundary --project mcp-boundary --project process-global",
+    "test:boundary": "vitest run --project boundary --project cli-boundary --project process-boundary --project mcp-boundary --project process-global",
     "pretest:mcp": "node scripts/check-dependency-install.mjs && node scripts/run-exclusive.mjs artifacts turbo run artifacts:skills artifacts:mcp-catalog",
     "test:mcp": "vitest run --project mcp-boundary",
     "pretest:acceptance": "npm run build:cached",
     "test:acceptance": "vitest run --project acceptance",
     "test:changed": "node scripts/run-development-tests.mjs changed",
     "pretest:integration": "npm run test:prepare",
-    "test:integration": "vitest run --project boundary --project process-boundary --project mcp-boundary --project process-global --project acceptance",
+    "test:integration": "vitest run --project boundary --project cli-boundary --project process-boundary --project mcp-boundary --project process-global --project acceptance",
     "pretest:coverage": "npm run test:prepare",
     "test:coverage": "vitest run --coverage.enabled --coverage.provider=v8",
     "test:ci": "npm run test:coverage -- --reporter=default --reporter=junit --outputFile.junit=test-results.xml",
diff --git a/scripts/lib/development-tests.mjs b/scripts/lib/development-tests.mjs
index ccf15f152..8ddebe115 100644
--- a/scripts/lib/development-tests.mjs
+++ b/scripts/lib/development-tests.mjs
@@ -56,7 +56,9 @@ const artifactConsumers = {
     "tests/boundary/mcp/contractPresentation.test.ts",
     "tests/boundary/mcp/toolSchemaValidity.test.ts",
   ],
-  "artifacts:product-catalog": ["tests/boundary/cli/productCatalog.test.ts"],
+  "artifacts:product-catalog": [
+    "tests/boundary/filesystem/productCatalog.test.ts",
+  ],
   "artifacts:managed-evidence": [
     "tests/boundary/filesystem/setupSkill.test.ts",
   ],
diff --git a/tests/boundary/cli/productCatalog.test.ts b/tests/boundary/filesystem/productCatalog.test.ts
similarity index 100%
rename from tests/boundary/cli/productCatalog.test.ts
rename to tests/boundary/filesystem/productCatalog.test.ts
diff --git a/tests/boundary/cli/browserScenarioCleanup.test.ts b/tests/process-global/browserScenarioCleanup.test.ts
similarity index 86%
rename from tests/boundary/cli/browserScenarioCleanup.test.ts
rename to tests/process-global/browserScenarioCleanup.test.ts
index 45df1b49b..b2acfd02e 100644
--- a/tests/boundary/cli/browserScenarioCleanup.test.ts
+++ b/tests/process-global/browserScenarioCleanup.test.ts
@@ -1,33 +1,33 @@
 import { Cli } from "incur";
 import { expect, it, vi } from "vitest";
 
-import type { BrowserScenarioCapturePort } from "../../../src/application/BrowserScenarioCapturePort.js";
-import { createBrowserScenarioEvidence } from "../../../src/application/BrowserScenarioEvidence.js";
-import type { BrowserScenarioSessionPort } from "../../../src/browser/BrowserScenarioSessionPort.js";
-import { PlaywrightBrowserScenarioProvider } from "../../../src/browser/PlaywrightBrowserScenarioProvider.js";
-import { PlaywrightScenarioBrowserCleanupOwner } from "../../../src/browser/PlaywrightScenarioBrowser.js";
-import { registerBrowserScenarioCommands } from "../../../src/cliBrowserScenarioCommands.js";
-import { sanitizeBrowserUrl } from "../../../src/domain/browserObservation.js";
+import type { BrowserScenarioCapturePort } from "../../src/application/BrowserScenarioCapturePort.js";
+import { createBrowserScenarioEvidence } from "../../src/application/BrowserScenarioEvidence.js";
+import type { BrowserScenarioSessionPort } from "../../src/browser/BrowserScenarioSessionPort.js";
+import { PlaywrightBrowserScenarioProvider } from "../../src/browser/PlaywrightBrowserScenarioProvider.js";
+import { PlaywrightScenarioBrowserCleanupOwner } from "../../src/browser/PlaywrightScenarioBrowser.js";
+import { registerBrowserScenarioCommands } from "../../src/cliBrowserScenarioCommands.js";
+import { sanitizeBrowserUrl } from "../../src/domain/browserObservation.js";
 import {
   browserScenarioSchema,
   type BrowserScenario,
-} from "../../../src/domain/browserScenario.js";
-import type { BrowserScenarioAction } from "../../../src/domain/browserScenarioValues.js";
-import { browserStepArtifactsSchema } from "../../../src/domain/browserScenarioCaptureValues.js";
-import { silentLogger } from "../../../src/logger.js";
+} from "../../src/domain/browserScenario.js";
+import type { BrowserScenarioAction } from "../../src/domain/browserScenarioValues.js";
+import { browserStepArtifactsSchema } from "../../src/domain/browserScenarioCaptureValues.js";
+import { silentLogger } from "../../src/logger.js";
 import {
   AnalysisCancelledError,
   AnalysisTimeoutError,
-} from "../../../src/domain/analysisErrorCore.js";
-import { BrowserObservationError } from "../../../src/domain/browserObservationError.js";
-import { parseEvidence } from "../../../src/domain/evidence.js";
-import { jsonObjectSchema } from "../../../src/domain/jsonValue.js";
-import { ok } from "../../../src/domain/result.js";
+} from "../../src/domain/analysisErrorCore.js";
+import { BrowserObservationError } from "../../src/domain/browserObservationError.js";
+import { parseEvidence } from "../../src/domain/evidence.js";
+import { jsonObjectSchema } from "../../src/domain/jsonValue.js";
+import { ok } from "../../src/domain/result.js";
 
 const state = vi.hoisted(() => ({
   provider: undefined as BrowserScenarioCapturePort | undefined,
 }));
-vi.mock("../../../src/composition/browserScenario.js", () => ({
+vi.mock("../../src/composition/browserScenario.js", () => ({
   createBrowserScenarioProvider: () => state.provider,
 }));
 
diff --git a/vitest.config.ts b/vitest.config.ts
index 3e45d5800..7a9485c4e 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -69,12 +69,25 @@ const TEST_PROJECTS = [
     name: "boundary",
     include: ["tests/boundary/**/*.test.ts"],
     exclude: [
+      "tests/boundary/cli/**/*.test.ts",
       "tests/boundary/mcp/**/*.test.ts",
       "tests/boundary/process/**/*.test.ts",
     ],
     pool: "forks" as const,
     maxWorkers: MAX_TEST_WORKERS,
   },
+  {
+    name: "cli-boundary",
+    include: ["tests/boundary/cli/**/*.test.ts"],
+    pool: "forks" as const,
+    maxWorkers: MAX_TEST_WORKERS,
+    // CLI tests create fresh command instances or subprocesses and own their
+    // cleanup. Reuse the immutable graph; module mocks belong in process-global.
+    isolate: false,
+    // Long-lived workers should collect temporary command/schema allocations
+    // before their two heaps compete with the real CLI child processes.
+    execArgv: ["--max-old-space-size=384"],
+  },
   {
     // Process-tree observations share host sampling resources; keep this small
     // lane serial while the independent projects run together.