diff --git a/README.md b/README.md
index 708d32655..1b1e9b837 100644
--- a/README.md
+++ b/README.md
@@ -127,6 +127,7 @@ npx -y rea-agents doctor
 | Ask an agent to investigate an app and build a feature    | Install the skill, then talk to your agent     |
 | Inspect or decompile one part of an app from the Terminal | `rea analyze` or `rea decompile`               |
 | Validate or canonicalize an Evidence v2 bundle            | `rea evidence-import` or `rea evidence-export` |
+| Import source as historical reference                     | `rea import-reference-source`                  |
 
 Filesystem evidence commands and MCP file tools are disabled until the operator approves absolute roots:
 
@@ -136,6 +137,13 @@ rea evidence-import /absolute/path/to/evidence/bundle.json
 rea evidence-export /absolute/path/to/evidence/bundle.json /absolute/path/to/evidence/canonical.json
 ```
 
+Historical source import requires a separate allowlist and never treats source as current behavioral authority:
+
+```bash
+export REA_REFERENCE_ROOTS_JSON='["/absolute/path/to/source"]'
+rea import-reference-source /absolute/path/to/source
+```
+
 Exports never replace an existing file unless `--overwrite` is explicit. Imports are size/depth bounded, validate every Evidence v2 ID and manifest, and never execute bundle content.
 
 Completion metadata is verifier-owned. Run `npm run completion:generate` after changing contracts, schemas, providers, scenarios, package metadata, verifier inputs, or the managed skill. CI runs `npm run completion:check`; it detects stale or tampered hashes and never rewrites a branch. Unsupported and unknown outcomes remain separate from passes, and a pass or failure requires indexed Evidence v2 IDs.
diff --git a/metadata/completion-manifest.json b/metadata/completion-manifest.json
index db0be3e64..d1febdcf3 100644
--- a/metadata/completion-manifest.json
+++ b/metadata/completion-manifest.json
@@ -16,7 +16,7 @@
       },
       {
         "path": "scripts/verify-package.mjs",
-        "sha256": "ffad65be3d5dde87c1e2d7b8886949066531e5b82933596b947507aab5f45b58"
+        "sha256": "b3809e3b7593fcaf16c9f962fbfaea105caca168c2ed8fd07336804ebb581174"
       },
       {
         "path": "scripts/verify-real-hopper.mjs",
diff --git a/scripts/verify-package.mjs b/scripts/verify-package.mjs
index 7ae784565..cf0c74032 100644
--- a/scripts/verify-package.mjs
+++ b/scripts/verify-package.mjs
@@ -24,6 +24,7 @@ const exec = promisify(execFile);
 const root = process.cwd();
 const workspace = await mkdtemp(join(tmpdir(), "rea-package-"));
 const evidenceRoot = join(workspace, "evidence");
+const referenceRoot = join(workspace, "reference-source");
 let tarball;
 
 try {
@@ -44,7 +45,21 @@ try {
   const home = join(workspace, "home");
   const fakeBin = join(workspace, "bin");
   await mkdir(fakeBin, { recursive: true });
-  await mkdir(evidenceRoot, { recursive: true });
+  await Promise.all([
+    mkdir(evidenceRoot, { recursive: true }),
+    mkdir(join(referenceRoot, "src"), { recursive: true }),
+  ]);
+  await Promise.all([
+    writeFile(
+      join(referenceRoot, "src", "main.ts"),
+      'import "./dependency";\n',
+    ),
+    writeFile(
+      join(referenceRoot, "src", "dependency.ts"),
+      "export const value = 1;\n",
+    ),
+    writeFile(join(referenceRoot, ".env"), "PACKAGE_SECRET_SENTINEL=1\n"),
+  ]);
   const brew = join(fakeBin, "brew");
   const swVers = join(fakeBin, "sw_vers");
   const npx = join(fakeBin, "npx");
@@ -84,6 +99,8 @@ try {
     HOPPER_LAUNCHER_PATH: hopper,
     REA_NPX_LOG: npxLog,
     REA_EVIDENCE_ROOTS_JSON: JSON.stringify([evidenceRoot]),
+    REA_REFERENCE_ROOTS_JSON: JSON.stringify([referenceRoot]),
+    REA_REFERENCE_SECRET_PATTERNS_JSON: JSON.stringify([".env"]),
   };
   await exec(
     "npm",
@@ -99,6 +116,7 @@ try {
     !help.includes("setup") ||
     !help.includes("inventory-artifact") ||
     !help.includes("extract-artifact") ||
+    !help.includes("import-reference-source") ||
     !llms.includes("decompile") ||
     !llms.includes("inventory-artifact") ||
     doctor.healthy !== expectedDoctorHealth ||
@@ -124,6 +142,20 @@ try {
     artifactInventory.normalized_result?.manifest?.root_format !== "zip"
   )
     throw new Error("packaged artifact inventory CLI failed");
+  const referenceImport = json(
+    await run(
+      cli,
+      ["import-reference-source", referenceRoot, "--json"],
+      environment,
+    ),
+  );
+  if (
+    referenceImport.authority !== "historical-reference" ||
+    referenceImport.root_alias !== "$REFERENCE_ROOT" ||
+    referenceImport.relationships?.[0]?.resolution !== "internal" ||
+    JSON.stringify(referenceImport).includes("PACKAGE_SECRET_SENTINEL")
+  )
+    throw new Error("packaged historical reference import CLI failed");
   const { createEvidence } = await import(
     new URL("../dist/domain/evidence.js", import.meta.url)
   );
diff --git a/src/cli.ts b/src/cli.ts
index b976dc031..05bc1f20b 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -14,6 +14,7 @@ import {
   exportEvidenceBundleCommand,
   importEvidenceBundleCommand,
 } from "./application/EvidenceBundleCommands.js";
+import { importReferenceSource } from "./application/ReferenceSourceImport.js";
 
 /**
  * Build the one-shot Incur CLI without starting Hopper at import time.
@@ -96,9 +97,40 @@ export const createCli = (): ReturnType<typeof Cli.create> => {
   registerNativeCommands(cli, logger);
   registerArtifactCommands(cli, logger);
   registerEvidenceCommands(cli, logger);
+  registerReferenceSourceCommand(cli, logger);
   return cli;
 };
 
+const registerReferenceSourceCommand = (
+  cli: ReturnType<typeof Cli.create>,
+  logger: Logger,
+): void => {
+  cli.command("import-reference-source", {
+    description: "Import a bounded source tree as historical reference only",
+    args: z.object({
+      root: z
+        .string()
+        .describe("Source root allowed by REA_REFERENCE_ROOTS_JSON"),
+    }),
+    run: ({ args }) =>
+      logCliCommand(logger, "import-reference-source", async () => {
+        const config = parseConfig(process.env);
+        if (!config.ok)
+          return { error: config.error._tag, message: config.error.message };
+        const imported = await importReferenceSource({
+          root: args.root,
+          caller: "rea-cli",
+          policy: config.value.referenceSourcePolicy,
+          importer: PRODUCT_IDENTITY.packageName,
+          importerVersion: null,
+        });
+        return imported.ok
+          ? imported.value
+          : { error: imported.error.code, message: imported.error.message };
+      }),
+  });
+};
+
 const registerArtifactCommands = (
   cli: ReturnType<typeof Cli.create>,
   logger: Logger,