diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..3795fb5
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,44 @@
+name: ci
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
+
+      - name: Install pinned Node.js runtime
+        uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
+        with:
+          node-version: 24.15.0
+          cache: yarn
+          cache-dependency-path: yarn.lock
+
+      - name: Install frozen project dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Run direct non-root project tests
+        run: |
+          set -euo pipefail
+          if [[ $(id -u) == 0 ]]; then
+            printf 'Direct project tests require an ordinary non-root runner\n' >&2
+            exit 1
+          fi
+          env -u OCI_V081_MATRIX_TEMP_ROOT npm test
+
+      - name: Reject generated or tracked-file drift
+        run: git diff --exit-code
diff --git a/tasks/completed/2026-08-06-1023_FIX_NON_ROOT_TEST_TEMP_ROOT_AND_ADD_DIRECT_CI.md b/tasks/completed/2026-08-06-1023_FIX_NON_ROOT_TEST_TEMP_ROOT_AND_ADD_DIRECT_CI.md
new file mode 100644
index 0000000..1e4aacb
--- /dev/null
+++ b/tasks/completed/2026-08-06-1023_FIX_NON_ROOT_TEST_TEMP_ROOT_AND_ADD_DIRECT_CI.md
@@ -0,0 +1,125 @@
+# Fix Non-Root Test Temp Root And Add Direct CI
+
+Status: completed.
+
+Baseline: `v0.9.1` release commit
+`db35bb8eefef173aa052b1264b973bdb0794912d`; working baseline
+`2e65be81527dbb4e4fa99c3775715b7c1be7aa72`.
+
+This is a repository QA and test-harness maintenance change. It does not alter
+the Rush Delivery module, Action, metadata, schema, or consumer configuration
+contract, and it must not retarget or republish `v0.9.1`.
+
+## Context
+
+A clean direct `npm test` run as an ordinary non-root user exposes one harness
+failure in the v0.8.1 OCI compatibility archive-helper test. The test sources
+[`../../test/scripts/lib/oci-v081-acceptance-matrix.sh`](../../test/scripts/lib/oci-v081-acceptance-matrix.sh)
+without the matrix runner that normally initializes
+`OCI_V081_MATRIX_TEMP_ROOT`. The unset value produces root-level
+`/rush-delivery-v081-*` `mktemp` templates, which a root Dagger test container
+can create but an ordinary user correctly cannot.
+
+Setting the private variable to `/tmp` is a diagnostic workaround, not an
+acceptable repository or CI requirement. The helper library must own a safe
+standard fallback, and CI must exercise the unconfigured non-root path directly.
+
+## Decisions And Constraints
+
+- [x] Preserve the production matrix runner's existing `TMPDIR` then `/tmp`
+      default and its cleanup-bound temporary namespace.
+- [x] Make direct library use resolve the same default without requiring a
+      caller-specific environment workaround.
+- [x] Do not expose `OCI_V081_MATRIX_TEMP_ROOT` as a Rush Delivery consumer
+      setting or add it to project documentation and examples.
+- [x] Keep archive member/link validation, exact-file cleanup, and failure
+      behavior unchanged.
+- [x] Add automatic pull-request and `main` push CI with `contents: read` only,
+      immutable third-party Action pins, the project-pinned Node runtime, and the
+      existing frozen Yarn install.
+- [x] Run direct `npm test` with `OCI_V081_MATRIX_TEMP_ROOT` explicitly absent;
+      never configure the workaround in CI.
+- [x] Keep this work release-neutral: no version, schema snapshot, provenance,
+      site-version, release, or tag changes.
+
+## Phase 1: Repair And Prove Temp-Root Ownership
+
+- [x] Initialize the library's task-specific temp root from an existing explicit
+      value, otherwise standard `TMPDIR`, otherwise `/tmp`.
+- [x] Update the archive-helper regression to remove the task-specific variable,
+      provide an isolated standard temp directory, and prove scratch files are
+      cleaned.
+- [x] Reproduce the old failure as a non-root user before the fix and prove the
+      corrected focused suite succeeds without the private override.
+
+### Phase 1 Exit Gate
+
+- [x] Direct archive-helper use is portable for non-root callers and retains the
+      existing bounded cleanup contract.
+
+## Phase 2: Add Direct Repository CI
+
+- [x] Add a dedicated CI workflow for pull requests and pushes to `main`.
+- [x] Install with `yarn install --frozen-lockfile`, run direct `npm test` with
+      the private override absent, and fail on generated or tracked-file drift.
+      Keep clean-checkout type-checking in the Dagger self-check, which injects
+      the generated, ignored `sdk` directory before running `yarn typecheck`.
+- [x] Add workflow contract tests for triggers, least privilege, immutable Action
+      pins, pinned Node version, direct command path, unset override, and clean
+      tree verification.
+- [x] Keep credentialed/mutating OCI acceptance manual and separate from this
+      ordinary non-secret CI job.
+
+### Phase 2 Exit Gate
+
+- [x] An ordinary GitHub-hosted runner will catch the original regression on
+      every proposed change without registry credentials or package-write
+      permission.
+
+## Phase 3: Validation And Handoff
+
+- [x] Run the focused matrix and CI workflow contract tests.
+- [x] Run a clean archived `npm test` as a non-root user with both
+      `OCI_V081_MATRIX_TEMP_ROOT` and `TMPDIR` initially absent.
+- [x] Run the complete direct test suite, `yarn typecheck`, workflow/shell lint,
+      `git diff --check`, and the clean Dagger self-check.
+- [x] Review the final diff for unrelated changes, mutable pins, secret access,
+      excessive permissions, and release/version drift.
+- [x] Commit and push reviewable changes, then open a draft pull request through
+      the normal repository flow.
+- [x] Record validation and pull-request evidence, mark every item complete, and
+      move this file to `tasks/completed` without changing a released tag.
+
+## Completion Criteria
+
+- [x] A clean non-root direct `npm test` passes without the private matrix temp
+      override.
+- [x] Direct CI runs automatically and cannot silently reintroduce the override.
+- [x] Production acceptance behavior and all consumer contracts remain
+      unchanged.
+- [x] `v0.9.1` remains immutable.
+
+## Validation Evidence
+
+- Before the repair, a clean direct test run as `nobody`, with the task-specific
+  override absent, reproduced the single archive-helper failure: 446 passed and
+  1 failed out of 447 tests.
+- After the repair, the same clean non-root path, with both the task-specific
+  override and `TMPDIR` initially absent, passed all 448 tests.
+- The focused OCI matrix, CI workflow, and documentation contract suites passed
+  all 30 tests.
+- `yarn install --frozen-lockfile`, `yarn typecheck`, repository-wide Trunk
+  checks, shell syntax validation, and `git diff --check` passed.
+- The first GitHub-hosted run proved that direct `npm test` passes as the runner
+  user. Its subsequent standalone `yarn typecheck` failed because a clean Git
+  checkout correctly excludes the generated `sdk` directory. CI was aligned
+  with project architecture by leaving that generated-SDK-aware check in the
+  clean Dagger self-check instead of inventing a second SDK bootstrap path.
+- The corrected clean Dagger self-check passed all 448 tests and its generated
+  SDK-aware `yarn typecheck` on commit
+  `29b155a0f66d329c689555d1e776eaae666b2b1e`.
+- The corrected GitHub-hosted pull-request CI passed in
+  [run 31093830711](https://github.com/BootstrapLaboratory/rush-delivery/actions/runs/31093830711),
+  and the review handoff is [pull request #7](https://github.com/BootstrapLaboratory/rush-delivery/pull/7).
+- The immutable `v0.9.1` tag still resolves to release commit
+  `db35bb8eefef173aa052b1264b973bdb0794912d`.
diff --git a/test/ci-workflow.test.ts b/test/ci-workflow.test.ts
new file mode 100644
index 0000000..4983121
--- /dev/null
+++ b/test/ci-workflow.test.ts
@@ -0,0 +1,82 @@
+import * as assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+import * as path from "node:path";
+import { test } from "node:test";
+import { fileURLToPath } from "node:url";
+import { parse as parseYaml } from "yaml";
+
+const testDirectory = path.dirname(fileURLToPath(import.meta.url));
+const workflowPath = path.join(testDirectory, "../.github/workflows/ci.yml");
+
+test("direct CI runs the unconfigured non-root project test path", async () => {
+  const source = await readFile(workflowPath, "utf8");
+  const workflow = parseYaml(source) as {
+    concurrency: { "cancel-in-progress": boolean; group: string };
+    jobs: {
+      test: {
+        "runs-on": string;
+        steps: Array<{
+          name: string;
+          run?: string;
+          uses?: string;
+          with?: Record<string, unknown>;
+        }>;
+        "timeout-minutes": number;
+      };
+    };
+    on: { pull_request: unknown; push: { branches: string[] } };
+    permissions: Record<string, string>;
+  };
+
+  assert.ok(Object.hasOwn(workflow.on, "pull_request"));
+  assert.deepEqual(workflow.on.push.branches, ["main"]);
+  assert.deepEqual(workflow.permissions, { contents: "read" });
+  assert.deepEqual(workflow.concurrency, {
+    "cancel-in-progress": true,
+    group: "ci-${{ github.workflow }}-${{ github.ref }}",
+  });
+  assert.equal(workflow.jobs.test["runs-on"], "ubuntu-latest");
+  assert.equal(workflow.jobs.test["timeout-minutes"], 30);
+
+  const steps = workflow.jobs.test.steps;
+  assert.ok(
+    steps.some(
+      (step) =>
+        step.uses ===
+        "actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803",
+    ),
+  );
+  assert.ok(
+    steps.some(
+      (step) =>
+        step.uses ===
+          "actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38" &&
+        step.with?.["node-version"] === "24.15.0" &&
+        step.with.cache === "yarn" &&
+        step.with["cache-dependency-path"] === "yarn.lock",
+    ),
+  );
+
+  const commands = steps.flatMap((step) => (step.run ? [step.run] : []));
+  assert.ok(commands.includes("yarn install --frozen-lockfile"));
+  assert.ok(commands.includes("git diff --exit-code"));
+  assert.ok(
+    commands.some(
+      (command) =>
+        command.includes("[[ $(id -u) == 0 ]]") &&
+        command.includes("env -u OCI_V081_MATRIX_TEMP_ROOT npm test"),
+    ),
+  );
+
+  assert.doesNotMatch(source, /OCI_V081_MATRIX_TEMP_ROOT:\s*\S+/u);
+  assert.doesNotMatch(source, /packages:\s+write/u);
+  assert.doesNotMatch(source, /secrets\./u);
+
+  const actionReferences = [
+    ...source.matchAll(/^\s*uses:\s+\S+@([^\s#]+)(?:\s+#.*)?$/gmu),
+  ];
+  assert.equal(actionReferences.length, 2);
+  for (const reference of actionReferences) {
+    assert.match(reference[1], /^[a-f0-9]{40}$/u);
+  }
+});
diff --git a/test/documentation-contract.test.ts b/test/documentation-contract.test.ts
index 550a1e8..d84ed39 100644
--- a/test/documentation-contract.test.ts
+++ b/test/documentation-contract.test.ts
@@ -571,6 +571,7 @@ test("generic onboarding snippets remain OCI-credential-free and provider-off",
 
 test("current production snippets pin third-party actions to reviewed commits", async () => {
   const productionFiles = [
+    ".github/workflows/ci.yml",
     ".github/workflows/oci-acceptance.yml",
     ".github/workflows/pages.yml",
     ".github/workflows/release-smoke.yml",
diff --git a/test/oci-live-matrix-contract.test.ts b/test/oci-live-matrix-contract.test.ts
index a48f975..f157190 100644
--- a/test/oci-live-matrix-contract.test.ts
+++ b/test/oci-live-matrix-contract.test.ts
@@ -54,9 +54,14 @@ const realFaultHookPath = path.join(
 );
 const gitSha = "0123456789abcdef0123456789abcdef01234567";
 
-async function runBash(source: string, args: string[] = []) {
+async function runBash(
+  source: string,
+  args: string[] = [],
+  environment: NodeJS.ProcessEnv = process.env,
+) {
   return execFileAsync("bash", ["-c", source, "matrix-test", ...args], {
     encoding: "utf8",
+    env: environment,
   });
 }
 
@@ -305,6 +310,11 @@ test("archive helpers verify external checksum and preserve bytes, modes, and sy
   const checksum = path.join(temporaryRoot, "protected", "bundle.sha256");
   const sourceRecord = path.join(temporaryRoot, "protected", "bundle.git-sha");
   const restored = path.join(temporaryRoot, "restored", "bundle");
+  const environment: NodeJS.ProcessEnv = {
+    ...process.env,
+    TMPDIR: temporaryRoot,
+  };
+  delete environment.OCI_V081_MATRIX_TEMP_ROOT;
 
   try {
     await buildFixture("oci-isolation", fixture);
@@ -318,6 +328,7 @@ test("archive helpers verify external checksum and preserve bytes, modes, and sy
         'oci_v081_matrix_restore_archive "$3" "$4" "$7"',
       ].join("; "),
       [libraryPath, fixture, archive, checksum, sourceRecord, gitSha, restored],
+      environment,
     );
     assert.deepEqual(
       await readFile(
@@ -335,6 +346,12 @@ test("archive helpers verify external checksum and preserve bytes, modes, and sy
       true,
     );
     assert.equal(await readFile(sourceRecord, "utf8"), `${gitSha}\n`);
+    assert.deepEqual(
+      (await readdir(temporaryRoot)).filter((entry) =>
+        entry.startsWith("rush-delivery-v081-archive-"),
+      ),
+      [],
+    );
   } finally {
     await rm(temporaryRoot, { force: true, recursive: true });
   }
diff --git a/test/scripts/lib/oci-v081-acceptance-matrix.sh b/test/scripts/lib/oci-v081-acceptance-matrix.sh
index b2d6aa6..471db61 100644
--- a/test/scripts/lib/oci-v081-acceptance-matrix.sh
+++ b/test/scripts/lib/oci-v081-acceptance-matrix.sh
@@ -9,6 +9,7 @@ OCI_V081_MATRIX_DAGGER_TIMEOUT_SECONDS=900
 OCI_V081_MATRIX_LIVE_MUTATION_TIMEOUT_SECONDS=1200
 OCI_V081_MATRIX_INVENTORY_TIMEOUT_SECONDS=300
 OCI_V081_MATRIX_PROTECTED_SCAN_TIMEOUT_SECONDS=300
+OCI_V081_MATRIX_TEMP_ROOT="${OCI_V081_MATRIX_TEMP_ROOT:-${TMPDIR:-/tmp}}"
 
 oci_v081_matrix_require_commands() {
 	local command_name