diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2666701..9364395 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,9 @@ Every entry says what changed as a caller sees it, why, and what to watch for 
 
 ### Added
 
+- The installed Drive research check now verifies person links, stale-note revision refusal,
+  scoped source-backed memories and local source retirement through the released CLI. It
+  checks persisted memory staleness and owner-note preservation with synthetic data only.
 - Controlled Drive acceptance: an explicit-profile, isolated-workspace checker for cached text,
   hierarchy, source identity, exact search, Markdown, local annotations and optional syncs.
   A private fixture manifest and owner-started test-account login are required for live use;
diff --git a/performance/documents/offline-catalog/README.md b/performance/documents/offline-catalog/README.md
index 4d0a55a..73e33ac 100644
--- a/performance/documents/offline-catalog/README.md
+++ b/performance/documents/offline-catalog/README.md
@@ -45,6 +45,38 @@ Negative cases cover wrong scope, wrong-source search hits, pending sync, change
 lost notes, unknown input, existing output and error-output canary exclusion. No Google login,
 conversion fidelity, remote mutations, real embeddings or OAuth verification were measured.
 
+### Installed knowledge lifecycle
+
+On 2026-10-15, the same exact npm package and synthetic fixture passed seven further behavior
+groups. The question was whether the document knowledge features work together through the
+released CLI, including source retirement, rather than only through individual service tests.
+Reproduce with the `live-installed.mjs` command above; it now also runs
+[`knowledge-installed.mjs`](knowledge-installed.mjs).
+
+| Behavior | Result |
+| --- | --- |
+| Explicitly link an imported document to a seeded person and filter by that person | Passed |
+| Edit a local note, then try its old revision | Stale edit refused; updated text preserved |
+| Create and confirm a memory | Proposed first; source subject/evidence and explicit work scope retained |
+| List/search that memory within its scope and source | Work result found; personal scope empty |
+| Remove the selected root and reconcile | Catalog, imported list, keyword search and source snapshot emptied |
+| Inspect persisted knowledge after source retirement | Confirmed memory stale; owner-written note preserved |
+| Reconcile again | No further removals |
+
+The existing eight initial and eight baseline checks still passed before the lifecycle cases.
+Setup: Linux, Node 24.19.0, Drive 0.7.0, Core 0.278.0 and framework 0.28.2. The person is seeded
+through the shared store's public API; links, notes, memories and reconciliation use the actual
+compiled Drive CLI. Persisted memory/note outcomes are inspected through the public store API.
+No SQL or Drive source imports are used.
+
+All processes use isolated state and the HTTP/browser/keyring denial wrapper. Reconciliation
+calls `sync` without `--offline` only after `folders remove` leaves no selected roots: there is
+no Google source to read, and the denial wrapper would fail an unexpected request. This is a
+local source-retirement test, not a live Google move, trash or permission-change test. Automatic
+editor identity association, project links, AI extraction and provider conversion fidelity remain
+outside these results. Source removal intentionally exercises snapshot deletion; all other test
+artifacts and reports remain available for inspection.
+
 ## Setup and reproduction
 
 Synthetic data only: one root, one nested folder, one indexed PDF fixture and a second explicit
diff --git a/performance/documents/offline-catalog/knowledge-installed.mjs b/performance/documents/offline-catalog/knowledge-installed.mjs
new file mode 100644
index 0000000..394800a
--- /dev/null
+++ b/performance/documents/offline-catalog/knowledge-installed.mjs
@@ -0,0 +1,80 @@
+import assert from "node:assert/strict"
+import { existsSync } from "node:fs"
+import { join } from "node:path"
+
+export const verifyKnowledge = async ({ invoke, openStore, env, workspace, reference }) => {
+  const checks = []
+  const item = (words, options) => {
+    const answer = invoke(words, options)
+    assert.ok(answer.item)
+    return answer.item
+  }
+  const list = (words) => {
+    const answer = invoke(words)
+    assert.ok(Array.isArray(answer.items))
+    return answer.items
+  }
+  const store = await openStore({ path: env.DRIVE_STORE, env })
+  let person
+  try {
+    const account = { provider: "synthetic-messenger", account: "synthetic-account" }
+    await store.saveAccount(account, { name: "Synthetic test account" })
+    await store.savePeople(account, [{ id: "synthetic-editor", name: "Rin Example" }])
+    person = await store.personOf({ provider: account.provider, id: "synthetic-editor" })
+    assert.ok(person)
+  } finally {
+    await store.close()
+  }
+  const personRef = `person:${person.uid}`
+  item(["relationships", "add", "doc", personRef, "--kind", "related-to"])
+  assert.ok(item(["documents", "context", "doc"]).links.some((link) => link.to === personRef))
+  assert.ok(list(["documents", "list", "--person", personRef]).some((doc) => doc.id === "doc"))
+  checks.push("explicit-person-link-and-filter")
+
+  const note = item(["notes", "add", "doc", "Synthetic lifecycle note"])
+  const edited = item(["notes", "edit", "doc", note.ref, "Updated lifecycle note", "--revision", String(note.revision)])
+  assert.ok(edited.revision > note.revision)
+  const refused = invoke(["notes", "edit", "doc", note.ref, "Stale overwrite", "--revision", String(note.revision)], {
+    failure: true,
+  })
+  assert.ok(refused.error?.code)
+  assert.equal(item(["notes", "show", "doc", note.ref]).text, "Updated lifecycle note")
+  checks.push("note-edit-refuses-stale-revision")
+
+  const memory = item(["memories", "add", "doc", "Synthetic lifecyclemarker decision", "--scope", "work"])
+  assert.equal(memory.subject, reference)
+  assert.deepEqual(memory.evidence, [reference])
+  assert.equal(memory.status, "proposed")
+  assert.equal(memory.scope, "work")
+  assert.equal(item(["memories", "confirm", "doc", memory.ref]).status, "confirmed")
+  checks.push("memory-evidence-and-review")
+  assert.equal(list(["memories", "list", "doc", "--scope", "personal"]).length, 0)
+  assert.ok(list(["memories", "list", "doc", "--scope", "work"]).some((entry) => entry.ref === memory.ref))
+  const found = item(["memories", "search", "doc", "lifecyclemarker", "--scope", "work"])
+  assert.ok(found.items.some((entry) => entry.ref === memory.ref))
+  checks.push("memory-scope-and-source-search")
+
+  item(["folders", "remove", "root"])
+  // With no selected roots, this sync reconciles local sources; the provider/keyring guard remains installed.
+  const reconciled = item(["sync"], { offline: false })
+  assert.equal(reconciled.removed, 1)
+  assert.equal(reconciled.pending, 0)
+  assert.equal(list(["catalog", "list"]).length, 0)
+  assert.equal(list(["documents", "list"]).length, 0)
+  assert.equal(item(["search", "wirecatbodymarker", "--exact"]).hits.length, 0)
+  assert.equal(invoke(["documents", "show", "doc"], { failure: true }).error.code, "not_found")
+  assert.equal(existsSync(join(workspace, "state/profiles/synthetic/documents/doc.json")), false)
+  checks.push("scope-removal-reconciles-catalog-search-and-snapshot")
+
+  const retained = await openStore({ path: env.DRIVE_STORE, env })
+  try {
+    assert.equal((await retained.memories.get(memory.ref)).status, "stale")
+    assert.equal((await retained.notes.note(note.ref)).text, "Updated lifecycle note")
+  } finally {
+    await retained.close()
+  }
+  checks.push("removed-source-stales-memory-and-keeps-owner-note")
+  assert.equal(item(["sync"], { offline: false }).removed, 0)
+  checks.push("scope-removal-is-idempotent")
+  return checks
+}
diff --git a/performance/documents/offline-catalog/live-installed.mjs b/performance/documents/offline-catalog/live-installed.mjs
index 8815492..821cf0e 100644
--- a/performance/documents/offline-catalog/live-installed.mjs
+++ b/performance/documents/offline-catalog/live-installed.mjs
@@ -5,6 +5,7 @@ import { createRequire } from "node:module"
 import { tmpdir } from "node:os"
 import { join, resolve } from "node:path"
 import { fileURLToPath, pathToFileURL } from "node:url"
+import { verifyKnowledge } from "./knowledge-installed.mjs"
 import { initialize, workspaceEnvironment } from "./live-input.mjs"
 
 const [input, ...rest] = process.argv.slice(2)
@@ -147,6 +148,20 @@ const run = (output, extra) => {
 const first = join(root, "first.json")
 const annotated = run(first, ["--annotate"])
 const repeated = run(join(root, "repeat.json"), ["--baseline", first])
+const invoke = (words, { offline = true, failure = false } = {}) => {
+  assert.ok(offline || words.join(" ") === "sync")
+  const result = spawnSync(
+    process.execPath,
+    [join(wrapper, "dist/bin/drive.js"), "synthetic", ...(offline ? ["--offline"] : []), "--json", ...words],
+    { env, encoding: "utf8", timeout: 30000 },
+  )
+  assert.equal(result.error, undefined)
+  assert.equal(result.status === 0, !failure, "synthetic lifecycle command failed")
+  const answer = JSON.parse(result.stdout.trim() || result.stderr.trim())
+  if (!failure) assert.equal(answer.meta.complete, true)
+  return answer
+}
+const knowledge = await verifyKnowledge({ invoke, openStore, env, workspace, reference: note.ref })
 process.stdout.write(
-  `${JSON.stringify({ passed: true, data: "synthetic", live_google: false, drive: metadata.version, core: metadata.dependencies["@wirecat/cli-core"], first_checks: annotated.checks.length, repeat_checks: repeated.checks.length })}\n`,
+  `${JSON.stringify({ passed: true, data: "synthetic", live_google: false, drive: metadata.version, core: metadata.dependencies["@wirecat/cli-core"], first_checks: annotated.checks.length, repeat_checks: repeated.checks.length, knowledge_checks: knowledge })}\n`,
 )