diff --git a/docs/api/openapi.yaml b/docs/api/openapi.yaml
index f3fe54fea..8e17c3fd7 100644
--- a/docs/api/openapi.yaml
+++ b/docs/api/openapi.yaml
@@ -30126,6 +30126,12 @@ components:
           properties:
             sourceText:
               type: string
+            anchored:
+              type: boolean
+            sourceOffset:
+              anyOf:
+                - type: number
+                - type: "null"
             page:
               anyOf:
                 - type: number
@@ -30134,6 +30140,8 @@ components:
               type: number
           required:
             - sourceText
+            - anchored
+            - sourceOffset
             - page
             - confidence
           additionalProperties: false
diff --git a/src/app/api/auth/me/documents-auto-ai-read/__tests__/route.test.ts b/src/app/api/auth/me/documents-auto-ai-read/__tests__/route.test.ts
new file mode 100644
index 000000000..68d2a90f6
--- /dev/null
+++ b/src/app/api/auth/me/documents-auto-ai-read/__tests__/route.test.ts
@@ -0,0 +1,128 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+/**
+ * The auto-read opt-in endpoint, and specifically the catch-up it schedules.
+ *
+ * The summary job is enqueued at UPLOAD time and no-ops while the flag is OFF,
+ * so without a catch-up on the flip the toggle only ever applied to future
+ * uploads — a user who filled the vault first saw the switch do nothing. These
+ * tests pin that a genuine OFF→ON transition schedules the pass, and that a
+ * no-op re-save or a flip to OFF does not.
+ */
+
+vi.mock("@/lib/db", () => ({
+  prisma: { user: { findUnique: vi.fn(), update: vi.fn() } },
+}));
+vi.mock("@/lib/auth/session", () => ({ getSession: vi.fn() }));
+vi.mock("@/lib/auth/audit", () => ({
+  auditLog: vi.fn().mockResolvedValue(undefined),
+}));
+vi.mock("@/lib/logging/transports", () => ({ emitIfSampled: vi.fn() }));
+vi.mock("@/lib/db-compat", () => ({
+  ensureDbCompatibility: vi.fn().mockResolvedValue(undefined),
+}));
+vi.mock("@/lib/consent/web-grant", () => ({
+  ensureWebAiConsentReceipt: vi.fn().mockResolvedValue(undefined),
+}));
+vi.mock("@/lib/jobs/document-summary-catchup", () => ({
+  enqueueSummaryCatchUp: vi.fn().mockResolvedValue({ enqueued: true }),
+}));
+vi.mock("@/lib/rate-limit", () => ({
+  checkRateLimit: vi.fn().mockResolvedValue({
+    allowed: true,
+    remaining: 59,
+    resetAt: Date.now() + 60_000,
+  }),
+  rateLimitHeaders: () => ({}),
+}));
+vi.mock("next/headers", () => ({
+  headers: vi.fn(async () => ({ get: () => null })),
+  cookies: vi.fn(async () => ({
+    get: () => undefined,
+    set: () => {},
+    delete: () => {},
+  })),
+}));
+
+import { PATCH } from "../route";
+import { prisma } from "@/lib/db";
+import { getSession } from "@/lib/auth/session";
+import { ensureWebAiConsentReceipt } from "@/lib/consent/web-grant";
+import { enqueueSummaryCatchUp } from "@/lib/jobs/document-summary-catchup";
+
+const SESSION_OK = {
+  session: { id: "sess-1", expiresAt: new Date(Date.now() + 3_600_000) },
+  user: { id: "user-1", username: "testuser", role: "USER" as const },
+};
+
+function mkPatch(documentsAutoAiRead: boolean): Request {
+  return new Request("http://localhost/api/auth/me/documents-auto-ai-read", {
+    method: "PATCH",
+    body: JSON.stringify({ documentsAutoAiRead }),
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+/** Seed the flag's value BEFORE the PATCH under test. */
+function withPrevious(documentsAutoAiRead: boolean) {
+  vi.mocked(prisma.user.findUnique).mockResolvedValue({
+    documentsAutoAiRead,
+  } as never);
+}
+
+beforeEach(() => {
+  vi.clearAllMocks();
+  vi.mocked(getSession).mockResolvedValue(SESSION_OK as never);
+  vi.mocked(prisma.user.update).mockResolvedValue({} as never);
+});
+
+describe("PATCH /api/auth/me/documents-auto-ai-read — catch-up scheduling", () => {
+  it("schedules a catch-up when the opt-in flips OFF→ON", async () => {
+    withPrevious(false);
+
+    const res = await PATCH(mkPatch(true));
+
+    expect(res.status).toBe(200);
+    expect(enqueueSummaryCatchUp).toHaveBeenCalledWith("user-1");
+    expect(enqueueSummaryCatchUp).toHaveBeenCalledTimes(1);
+  });
+
+  it("does not re-schedule when the opt-in was already ON", async () => {
+    // Idempotency at the trigger: re-saving an already-ON setting must not
+    // queue a second pass over the same documents.
+    withPrevious(true);
+
+    await PATCH(mkPatch(true));
+
+    expect(enqueueSummaryCatchUp).not.toHaveBeenCalled();
+  });
+
+  it("does not schedule anything when the opt-in is turned OFF", async () => {
+    withPrevious(true);
+
+    await PATCH(mkPatch(false));
+
+    expect(enqueueSummaryCatchUp).not.toHaveBeenCalled();
+    expect(ensureWebAiConsentReceipt).not.toHaveBeenCalled();
+  });
+
+  it("still mints the consent receipt on the flip that schedules the pass", async () => {
+    // The catch-up rides the same act of consent, never around it.
+    withPrevious(false);
+
+    await PATCH(mkPatch(true));
+
+    expect(ensureWebAiConsentReceipt).toHaveBeenCalledWith("user-1");
+  });
+
+  it("persists the flag field-by-field", async () => {
+    withPrevious(false);
+
+    await PATCH(mkPatch(true));
+
+    expect(prisma.user.update).toHaveBeenCalledWith({
+      where: { id: "user-1" },
+      data: { documentsAutoAiRead: true },
+    });
+  });
+});
diff --git a/src/app/api/auth/me/documents-auto-ai-read/route.ts b/src/app/api/auth/me/documents-auto-ai-read/route.ts
index 03eb31123..37a79d4cd 100644
--- a/src/app/api/auth/me/documents-auto-ai-read/route.ts
+++ b/src/app/api/auth/me/documents-auto-ai-read/route.ts
@@ -12,7 +12,10 @@
  * Flipping it ON is itself the standing consent act, so the write also mints an
  * append-only `ai_full` consent receipt (`ensureWebAiConsentReceipt`) — the
  * durable audit record that sits alongside the runtime short-circuit the
- * document consent gate reads. Mirrors `auth/me/labs-local-ocr`: 60/min rate
+ * document consent gate reads. An OFF→ON flip additionally schedules a bounded
+ * catch-up over the documents already stored (`enqueueSummaryCatchUp`), because
+ * the summary job is enqueued at upload time and would otherwise never revisit
+ * a vault filled before the opt-in. Mirrors `auth/me/labs-local-ocr`: 60/min rate
  * limit, Zod `safeParse` → 422 via `returnAllZodIssues`, audit-log row,
  * field-by-field write (no mass assignment). Idempotent — always returns the
  * resolved next state so the client can hard-set the optimistic update.
@@ -31,6 +34,7 @@ import { annotate } from "@/lib/logging/context";
 import { auditLog } from "@/lib/auth/audit";
 import { ensureWebAiConsentReceipt } from "@/lib/consent/web-grant";
 import { prisma } from "@/lib/db";
+import { enqueueSummaryCatchUp } from "@/lib/jobs/document-summary-catchup";
 import { checkRateLimit, rateLimitHeaders } from "@/lib/rate-limit";
 
 const patchBodySchema = z.object({
@@ -110,6 +114,17 @@ export const PATCH = apiHandler(async (req: Request) => {
     await ensureWebAiConsentReceipt(user.id, "affirmative");
   }
 
+  // A genuine OFF→ON flip schedules a catch-up over the documents already in
+  // the vault. Without it the switch only ever applied to FUTURE uploads: the
+  // summary job is enqueued at upload time and no-ops while the flag is OFF, so
+  // a user who uploaded first and opted in later saw the toggle do nothing.
+  // Fire-and-forget and bounded; the pass only enqueues, and every consent and
+  // budget gate still runs per document inside the summary job itself.
+  const wasEnabled = previous?.documentsAutoAiRead ?? false;
+  if (next && !wasEnabled) {
+    void enqueueSummaryCatchUp(user.id);
+  }
+
   await auditLog("user.documentsAutoAiRead.update", {
     userId: user.id,
     ipAddress: getClientIp(req),
diff --git a/src/lib/ai/__tests__/retry-correction.test.ts b/src/lib/ai/__tests__/retry-correction.test.ts
new file mode 100644
index 000000000..681a2b062
--- /dev/null
+++ b/src/lib/ai/__tests__/retry-correction.test.ts
@@ -0,0 +1,87 @@
+/**
+ * The corrective retry prompt and the validator that grades the retry reply
+ * must describe ONE contract.
+ *
+ * The prompt used to demand the dead strict wrapper's shape — `citations[]`,
+ * `warnings[]`, and a mandatory `metricSource` / `rationale` / `id` /
+ * `severity` on every recommendation — while naming none of the five fields
+ * `insightResultSchema` actually requires. A model that obeyed the correction
+ * produced a reply the validator could not accept, so the one corrective pass
+ * spent budget steering the generation away from its own contract.
+ *
+ * These tests pin both directions: the example the prompt hands the model
+ * validates, and the prompt names every required key without naming a key the
+ * validator does not have.
+ */
+import { describe, it, expect } from "vitest";
+import { z } from "zod/v4";
+
+import {
+  buildRetryCorrectionMessage,
+  RETRY_CONTRACT_EXAMPLE,
+} from "@/lib/ai/retry-correction";
+import { insightResultSchema } from "@/lib/ai/types";
+
+/** Top-level keys `insightResultSchema` requires (no `.optional()`). */
+function requiredSchemaKeys(): string[] {
+  const shape = (insightResultSchema as unknown as z.ZodObject).shape;
+  return Object.entries(shape)
+    .filter(([, field]) => !(field as z.ZodType).safeParse(undefined).success)
+    .map(([key]) => key);
+}
+
+/** Every top-level key the schema knows about, required or optional. */
+function allSchemaKeys(): string[] {
+  return Object.keys((insightResultSchema as unknown as z.ZodObject).shape);
+}
+
+describe("buildRetryCorrectionMessage — prompt matches the validator", () => {
+  it("hands the model an example that the validator accepts", () => {
+    const parsed = insightResultSchema.safeParse(RETRY_CONTRACT_EXAMPLE);
+    expect(parsed.success).toBe(true);
+  });
+
+  it("embeds that example verbatim in the corrective message", () => {
+    const message = buildRetryCorrectionMessage("reason", "details");
+    expect(message).toContain(JSON.stringify(RETRY_CONTRACT_EXAMPLE, null, 2));
+  });
+
+  it("names every field the validator requires", () => {
+    const message = buildRetryCorrectionMessage("reason", "details");
+    for (const key of requiredSchemaKeys()) {
+      expect(message, `retry prompt omits required field "${key}"`).toContain(
+        key,
+      );
+    }
+  });
+
+  it("names no top-level field the validator does not have", () => {
+    const message = buildRetryCorrectionMessage("reason", "details");
+    const known = new Set(allSchemaKeys());
+    // The dead wrapper's two invented top-level arrays. Asserted by name
+    // rather than by diffing prose, so the check cannot go vacuous.
+    for (const stale of ["citations", "warnings"]) {
+      expect(known.has(stale)).toBe(false);
+      expect(
+        message,
+        `retry prompt still demands the removed "${stale}" field`,
+      ).not.toContain(stale);
+    }
+  });
+
+  it("marks the optional recommendation fields as optional", () => {
+    const message = buildRetryCorrectionMessage("reason", "details");
+    // `metricSource` and `rationale` are `.optional()` on the validator; the
+    // prompt must not demand them or a grounded-but-sparse reply gets a
+    // needless second round trip.
+    expect(message).toMatch(/OPTIONAL/);
+    expect(message).not.toMatch(/Every recommendation MUST carry/);
+  });
+
+  it("passes the caller's reason and truncated details through", () => {
+    const message = buildRetryCorrectionMessage("bad-json", "x".repeat(2000));
+    expect(message).toContain("bad-json");
+    expect(message).toContain("x".repeat(1024));
+    expect(message).not.toContain("x".repeat(1025));
+  });
+});
diff --git a/src/lib/ai/retry-correction.ts b/src/lib/ai/retry-correction.ts
index 26c912b49..d3206decc 100644
--- a/src/lib/ai/retry-correction.ts
+++ b/src/lib/ai/retry-correction.ts
@@ -17,8 +17,47 @@
  *
  * What survived is the part that was always reachable — the corrective
  * message, which `comprehensive-generate.ts` sends on its own JSON-retry leg.
+ * The message kept describing the DEAD wrapper's contract long after the
+ * wrapper went: it demanded `citations[]` and `warnings[]` (fields the live
+ * `insightResultSchema` does not have), demanded `id` / `severity` /
+ * `metricSource` / `rationale` on every recommendation (all optional in the
+ * live schema), and named NONE of the five fields the live schema actually
+ * requires — `classification`, `findings`, `correlations`, `dataQuality`,
+ * `disclaimer`. So the one corrective pass steered the model away from the
+ * contract it was being corrected towards: the retry reply could not validate,
+ * fell through `parseComprehensiveResult`'s raw-object escape hatch, and the
+ * downstream surfaces read an unvalidated payload.
+ *
+ * The message below now describes `insightResultSchema` (`src/lib/ai/types.ts`)
+ * and nothing else. `RETRY_CONTRACT_EXAMPLE` is the same contract as data, and
+ * a test validates it against the schema — so the prompt and the validator
+ * cannot drift apart again without the suite going red.
  */
 
+/**
+ * A minimal payload that satisfies `insightResultSchema` exactly: every
+ * required field present, no optional field set. Embedded verbatim in the
+ * corrective message so the model has an unambiguous target, and asserted
+ * against the schema in `__tests__/retry-correction.test.ts`.
+ */
+export const RETRY_CONTRACT_EXAMPLE = {
+  summary: "Two to three sentences describing the period.",
+  classification: "gut",
+  findings: [
+    { label: "Metric name", value: "Value as text", assessment: "neutral" },
+  ],
+  correlations: [
+    { factor: "Factor name", effect: "Observed effect", confidence: "mittel" },
+  ],
+  recommendations: [{ text: "One grounded, actionable sentence." }],
+  dataQuality: {
+    coverage: "How much of the window carried readings.",
+    gaps: ["A named gap, or an empty array."],
+    confidence: "mittel",
+  },
+  disclaimer: "The standard non-diagnostic disclaimer.",
+} as const;
+
 /**
  * Build the corrective user-prompt suffix that explains to the model
  * what went wrong on the first attempt. Includes the violated zod
@@ -33,28 +72,34 @@ Your previous response did not satisfy the required JSON schema.
 Reason: ${reason}
 Details: ${details.slice(0, 1024)}
 
-You MUST return a JSON object matching this schema exactly. Do NOT
-include prose, markdown fences, or commentary outside the JSON.
+You MUST return a single JSON object. Do NOT include prose, markdown
+fences, or commentary outside the JSON.
 
-Required top-level fields:
+Required top-level fields — all seven MUST be present:
   - summary: string (2-3 sentences)
-  - recommendations: array of objects with
-      { id: string,
-        text: string,
-        severity: "info" | "suggestion" | "important" | "urgent",
-        metricSource: { type: string, timeRange: string, summary: string, n?: number },
-        rationale: { dataWindow: "last7days" | "last30days" | "last90days" | "allTime",
-                     comparedTo: non-empty string,
-                     deviation: non-empty string } }
-  - citations: array of objects with { type: string, timeRange: string, summary: string }
-  - warnings: array of objects with { topic: string, message: string, severity?: same enum }
+  - classification: exactly one of "optimal" | "gut" | "grenzwertig"
+      | "erhoht" | "kritisch"
+  - findings: array of { label: string, value: string,
+      assessment: "positive" | "neutral" | "attention" | "warning" }
+  - correlations: array of { factor: string, effect: string,
+      confidence: "hoch" | "mittel" | "gering" }
+  - recommendations: array of { text: string }
+  - dataQuality: { coverage: string, gaps: array of string,
+      confidence: "hoch" | "mittel" | "gering" }
+  - disclaimer: string
 
-Every recommendation's metricSource MUST also appear in citations[]
-(same type + timeRange). Every recommendation MUST carry a
-rationale object — dataWindow, comparedTo, and deviation are all
-required and rationale.dataWindow MUST equal metricSource.timeRange.
-If you cannot ground a recommendation in user data from the
-snapshot you were given, OMIT it. An empty recommendations[] is
-acceptable.
+An empty array is acceptable for findings, correlations, and
+recommendations. If you cannot ground a recommendation in the user
+data from the snapshot you were given, OMIT that recommendation.
+
+A recommendation object MAY additionally carry any of: id, severity
+("info" | "suggestion" | "important" | "urgent"), metricSource
+({ type, timeRange, summary }), rationale ({ dataWindow, comparedTo,
+deviation }), confidence (integer 0-100). All of these are OPTIONAL —
+omit any you cannot ground rather than inventing a value. Do NOT add
+top-level fields beyond the seven listed above.
+
+A minimal valid response looks exactly like this:
+${JSON.stringify(RETRY_CONTRACT_EXAMPLE, null, 2)}
 `;
 }
diff --git a/src/lib/documents/__tests__/anchor-source-text.test.ts b/src/lib/documents/__tests__/anchor-source-text.test.ts
new file mode 100644
index 000000000..bdeeb4ab0
--- /dev/null
+++ b/src/lib/documents/__tests__/anchor-source-text.test.ts
@@ -0,0 +1,97 @@
+/**
+ * Provenance anchoring — the model's quote is a lookup key, never content.
+ *
+ * Both branches matter equally. A quote that IS in the document must come back
+ * as the document's own characters (not the model's rendering of them), and a
+ * quote that is NOT in the document must come back unanchored with no text at
+ * all — never a paraphrase presented to a reviewer as a verbatim excerpt.
+ */
+import { describe, expect, it } from "vitest";
+
+import { anchorSourceText } from "@/lib/documents/anchor-source-text";
+
+const OCR = [
+  "Befundbericht 2026-01-02",
+  "Dx: Type 2 diabetes mellitus (E11.9)",
+  "Hämoglobin    14.2 g/dL   (13.5-17.5)",
+  "Metformin 500 mg twice daily",
+].join("\n");
+
+describe("anchorSourceText — located spans", () => {
+  it("returns the document's own span for an exact echo", () => {
+    const anchored = anchorSourceText(
+      "Dx: Type 2 diabetes mellitus (E11.9)",
+      OCR,
+    );
+    expect(anchored.anchored).toBe(true);
+    expect(anchored.sourceText).toBe("Dx: Type 2 diabetes mellitus (E11.9)");
+    expect(anchored.sourceOffset).toBe(OCR.indexOf("Dx:"));
+  });
+
+  it("stores the source spacing, not the model's normalised spacing", () => {
+    // The model collapsed the OCR column padding to single spaces. The stored
+    // span must be what the document carries, padding included.
+    const anchored = anchorSourceText("Hämoglobin 14.2 g/dL (13.5-17.5)", OCR);
+    expect(anchored.anchored).toBe(true);
+    expect(anchored.sourceText).toBe("Hämoglobin    14.2 g/dL   (13.5-17.5)");
+    expect(OCR.slice(anchored.sourceOffset!)).toContain(anchored.sourceText);
+  });
+
+  it("tolerates case drift and reflowed line breaks", () => {
+    const anchored = anchorSourceText("metformin 500 MG twice daily", OCR);
+    expect(anchored.anchored).toBe(true);
+    expect(anchored.sourceText).toBe("Metformin 500 mg twice daily");
+  });
+
+  it("anchors a span the offset can be read back from", () => {
+    const anchored = anchorSourceText("Befundbericht", OCR);
+    expect(anchored.sourceOffset).not.toBeNull();
+    expect(
+      OCR.slice(
+        anchored.sourceOffset!,
+        anchored.sourceOffset! + anchored.sourceText.length,
+      ),
+    ).toBe(anchored.sourceText);
+  });
+});
+
+describe("anchorSourceText — unlocatable quotes are unanchored", () => {
+  it("drops a plausible-looking paraphrase the document never contained", () => {
+    // Every word here appears somewhere in the document; the SENTENCE does not.
+    const anchored = anchorSourceText(
+      "Patient has diabetes and takes Metformin for it",
+      OCR,
+    );
+    expect(anchored.anchored).toBe(false);
+    expect(anchored.sourceText).toBe("");
+    expect(anchored.sourceOffset).toBeNull();
+  });
+
+  it("drops an outright hallucinated value", () => {
+    const anchored = anchorSourceText("Hämoglobin 9.1 g/dL", OCR);
+    expect(anchored.anchored).toBe(false);
+    expect(anchored.sourceText).toBe("");
+  });
+
+  it("refuses to anchor a quote too short to mean anything", () => {
+    // "g" occurs many times; a match that short is noise, not provenance.
+    const anchored = anchorSourceText("g", OCR);
+    expect(anchored.anchored).toBe(false);
+    expect(anchored.sourceText).toBe("");
+  });
+
+  it("is unanchored when there is no extracted text to verify against", () => {
+    // Vision mode: the model read the rendered page, nothing can confirm it.
+    const anchored = anchorSourceText(
+      "Dx: Type 2 diabetes mellitus",
+      undefined,
+    );
+    expect(anchored.anchored).toBe(false);
+    expect(anchored.sourceText).toBe("");
+    expect(anchored.sourceOffset).toBeNull();
+  });
+
+  it("is unanchored for an empty quote", () => {
+    expect(anchorSourceText("   ", OCR).anchored).toBe(false);
+  });
+});
diff --git a/src/lib/documents/__tests__/auto-stage-labs.test.ts b/src/lib/documents/__tests__/auto-stage-labs.test.ts
index 566fcc826..aca4ac148 100644
--- a/src/lib/documents/__tests__/auto-stage-labs.test.ts
+++ b/src/lib/documents/__tests__/auto-stage-labs.test.ts
@@ -120,7 +120,13 @@ beforeEach(() => {
           referenceHigh: 17,
           effectiveDate: "2026-07-10",
         },
-        provenance: { sourceText: "Hämoglobin 14.2", page: 0, confidence: 0.9 },
+        provenance: {
+          sourceText: "Hämoglobin 14.2",
+          anchored: true,
+          sourceOffset: 0,
+          page: 0,
+          confidence: 0.9,
+        },
       },
     ],
   });
diff --git a/src/lib/documents/__tests__/extract.test.ts b/src/lib/documents/__tests__/extract.test.ts
index f1d86aee1..6e398accf 100644
--- a/src/lib/documents/__tests__/extract.test.ts
+++ b/src/lib/documents/__tests__/extract.test.ts
@@ -145,6 +145,95 @@ describe("runInboundExtraction — stated-status-only mapping", () => {
     expect(med.statusStated).toBe("ongoing");
   });
 
+  it("stores the document's real span, not the model's echo of it", async () => {
+    // The OCR text says "Hämoglobin    14.2 g/dL"; the model echoes a tidied
+    // rendering of it. The stored provenance must be the document's characters.
+    const ocrText = "Labor 2026-01-02\nHämoglobin    14.2 g/dL   (13.5-17.5)";
+    const provider = fakeProvider(
+      JSON.stringify({
+        facts: [
+          {
+            type: "OBSERVATION",
+            label: "Hämoglobin",
+            value: 14.2,
+            unit: "g/dL",
+            confidence: 0.9,
+            sourceText: "Hämoglobin 14.2 g/dL (13.5-17.5)",
+          },
+        ],
+      }),
+    );
+
+    const result = await runInboundExtraction({
+      provider,
+      providerType: "mock",
+      ocrText,
+    });
+    const { provenance } = result.facts[0]!;
+    expect(provenance.anchored).toBe(true);
+    expect(provenance.sourceText).toBe("Hämoglobin    14.2 g/dL   (13.5-17.5)");
+    expect(
+      ocrText.slice(
+        provenance.sourceOffset!,
+        provenance.sourceOffset! + provenance.sourceText.length,
+      ),
+    ).toBe(provenance.sourceText);
+  });
+
+  it("marks a fact unanchored rather than storing a quote it cannot locate", async () => {
+    const ocrText = "Labor 2026-01-02\nHämoglobin 14.2 g/dL";
+    const provider = fakeProvider(
+      JSON.stringify({
+        facts: [
+          {
+            type: "OBSERVATION",
+            label: "Hämoglobin",
+            value: 14.2,
+            unit: "g/dL",
+            confidence: 0.9,
+            // A quote the document never carried.
+            sourceText: "Haemoglobin was measured at 14.2 and is normal",
+          },
+        ],
+      }),
+    );
+
+    const result = await runInboundExtraction({
+      provider,
+      providerType: "mock",
+      ocrText,
+    });
+    const { provenance } = result.facts[0]!;
+    expect(provenance.anchored).toBe(false);
+    expect(provenance.sourceText).toBe("");
+    expect(provenance.sourceOffset).toBeNull();
+    // The fact itself still stages — only its provenance claim is withheld.
+    expect(result.facts).toHaveLength(1);
+  });
+
+  it("marks vision-mode facts unanchored — there is no extracted text to verify", async () => {
+    const provider = fakeProvider(
+      JSON.stringify({
+        facts: [
+          {
+            type: "CONDITION",
+            label: "Type 2 diabetes mellitus",
+            confidence: 0.9,
+            sourceText: "Dx: Type 2 diabetes mellitus",
+          },
+        ],
+      }),
+    );
+
+    const result = await runInboundExtraction({
+      provider,
+      providerType: "mock",
+    });
+    const { provenance } = result.facts[0]!;
+    expect(provenance.anchored).toBe(false);
+    expect(provenance.sourceText).toBe("");
+  });
+
   it("throws InboundExtractError on unparseable provider output", async () => {
     const provider = fakeProvider("not json at all");
     await expect(
diff --git a/src/lib/documents/anchor-source-text.ts b/src/lib/documents/anchor-source-text.ts
new file mode 100644
index 000000000..1cd1f5670
--- /dev/null
+++ b/src/lib/documents/anchor-source-text.ts
@@ -0,0 +1,130 @@
+/**
+ * Resolve a fact's provenance quote against the REAL extracted document text.
+ *
+ * Why this exists: the extraction prompt asks the model to echo "the exact
+ * verbatim span of the document the fact came from" and the pipeline used to
+ * store that echo as-is. A model can paraphrase it, normalise it, or invent it
+ * outright, and the stored quote is then an anchor that points at nothing — or,
+ * worse, at a span the document never contained, presented to a human reviewer
+ * as if it were a verbatim transcription of their clinical record.
+ *
+ * The model's echo is therefore treated as a LOOKUP KEY, never as content. We
+ * search the extracted text for it and store the span the DOCUMENT actually
+ * carries. When the echo cannot be located, the fact is marked unanchored and
+ * carries no quote at all: "we could not verify this against the source" is an
+ * honest answer, an unverifiable quote is not.
+ *
+ * Two passes, cheapest first:
+ *   1. exact substring — the common case, the model echoed the span verbatim;
+ *   2. whitespace-collapsed + case-folded substring — covers OCR line wrapping,
+ *      column merges, and case drift, which are reflow artefacts rather than
+ *      paraphrase. The offset map walks the match back to the ORIGINAL text so
+ *      the stored span keeps the document's own characters and spacing.
+ *
+ * A paraphrase fails both passes by construction, which is the point.
+ */
+
+/**
+ * Minimum normalised length a quote must reach before we try to locate it. A
+ * one- or two-character key matches somewhere in almost any document, so a
+ * "match" that short would be noise dressed up as provenance.
+ */
+const MIN_ANCHORABLE_LENGTH = 3;
+
+/** Longest span we store, mirroring the provenance column's own cap. */
+const MAX_SPAN_LENGTH = 2000;
+
+export interface AnchoredSource {
+  /**
+   * The verbatim span as it appears in the extracted text, or "" when the
+   * quote could not be located (or there was no extracted text to search).
+   */
+  sourceText: string;
+  /** True only when `sourceText` was read back out of the document text. */
+  anchored: boolean;
+  /** Character offset of the span in the extracted text; null when unanchored. */
+  sourceOffset: number | null;
+}
+
+/** The unanchored result — no quote, no offset, no claim. */
+const UNANCHORED: AnchoredSource = {
+  sourceText: "",
+  anchored: false,
+  sourceOffset: null,
+};
+
+/**
+ * Whitespace-collapsed, case-folded projection of `text`, plus a map from each
+ * projected character back to its index in the original string. Folding is
+ * skipped for any character whose lowercase form is not exactly one code unit,
+ * so the map stays 1:1 and an offset can never drift.
+ */
+function project(text: string): { normalised: string; offsets: number[] } {
+  const chars: string[] = [];
+  const offsets: number[] = [];
+  let pendingSpace = false;
+  for (let i = 0; i < text.length; i += 1) {
+    const ch = text[i]!;
+    if (/\s/.test(ch)) {
+      // Collapse a whitespace run to one space, and never lead with one.
+      if (chars.length > 0) pendingSpace = true;
+      continue;
+    }
+    if (pendingSpace) {
+      chars.push(" ");
+      offsets.push(i);
+      pendingSpace = false;
+    }
+    const lower = ch.toLowerCase();
+    chars.push(lower.length === 1 ? lower : ch);
+    offsets.push(i);
+  }
+  return { normalised: chars.join(""), offsets };
+}
+
+/**
+ * Locate `quote` inside `sourceText` and return the span the document actually
+ * carries. `sourceText` is the text the extraction ran against — the OCR output
+ * in text mode. Pass `undefined`/`""` for vision mode, where the model read the
+ * rendered page directly and there is no extracted text to verify against: the
+ * result is unanchored, because nothing in that flow can confirm the quote.
+ */
+export function anchorSourceText(
+  quote: string,
+  sourceText: string | undefined,
+): AnchoredSource {
+  if (!sourceText) return UNANCHORED;
+  const trimmed = quote.trim();
+  if (!trimmed) return UNANCHORED;
+
+  // The length floor gates BOTH passes: a one-character key matches the exact
+  // pass just as readily as the folded one, and a hit that short is noise
+  // either way.
+  const needle = project(trimmed);
+  if (needle.normalised.length < MIN_ANCHORABLE_LENGTH) return UNANCHORED;
+
+  // Pass 1 — the model echoed the span verbatim.
+  const exact = sourceText.indexOf(trimmed);
+  if (exact !== -1) {
+    return {
+      sourceText: sourceText.slice(exact, exact + trimmed.length),
+      anchored: true,
+      sourceOffset: exact,
+    };
+  }
+
+  // Pass 2 — same span, reflowed or case-drifted by OCR.
+  const haystack = project(sourceText);
+  const hit = haystack.normalised.indexOf(needle.normalised);
+  if (hit === -1) return UNANCHORED;
+
+  const start = haystack.offsets[hit]!;
+  const lastIndex = haystack.offsets[hit + needle.normalised.length - 1]!;
+  return {
+    sourceText: sourceText
+      .slice(start, lastIndex + 1)
+      .slice(0, MAX_SPAN_LENGTH),
+    anchored: true,
+    sourceOffset: start,
+  };
+}
diff --git a/src/lib/documents/extract.ts b/src/lib/documents/extract.ts
index 8b6ea3d51..e33508cdb 100644
--- a/src/lib/documents/extract.ts
+++ b/src/lib/documents/extract.ts
@@ -15,8 +15,17 @@
  * assertion about the patient, never as the app's conclusion. The mandatory
  * human review screen is the hard backstop — nothing commits without per-fact
  * confirmation, and a low-confidence fact fails closed.
+ *
+ * Provenance is resolved, not echoed. The model returns a quote of the span it
+ * read a fact from; that quote is used to LOOK UP the real span in the extracted
+ * text (`anchorSourceText`) and the document's own characters are what gets
+ * stored. A quote that matches nothing is dropped and the fact is flagged
+ * unanchored — an anchor that points at nothing, or at the wrong span, is worse
+ * than an honest "unverified" because the review screen presents it to a human
+ * as a verbatim transcription of their record.
  */
 import { AI_BUDGETS } from "@/lib/ai/ai-budgets";
+import { anchorSourceText } from "@/lib/documents/anchor-source-text";
 import {
   DOCUMENT_TEXT_FENCE_START,
   DOCUMENT_TEXT_FENCE_END,
@@ -263,17 +272,28 @@ export async function runInboundExtraction(
   const reportDate = normaliseDate(envelope.reportDate);
 
   const facts: StagedFactInput[] = [];
+  let unanchored = 0;
   for (const raw of envelope.facts.slice(0, INBOUND_MAX_FACTS)) {
     const data = mapFactData(raw);
     if (!data) continue;
     const confidence = raw.confidence;
+    // The model's `sourceText` is a LOOKUP KEY, never content: we search the
+    // extracted text for it and store the span the document actually carries.
+    // A quote we cannot locate is dropped and the fact is marked unanchored —
+    // the reviewer is told "unverified" rather than shown a quote the document
+    // may never have contained. Vision mode has no extracted text at all, so
+    // every fact from it is unanchored by construction.
+    const anchor = anchorSourceText(raw.sourceText, args.ocrText);
+    if (!anchor.anchored) unanchored += 1;
     facts.push({
       factType: raw.type,
       confidence,
       needsReview: confidence < INBOUND_CONFIDENCE_FLOOR,
       data,
       provenance: {
-        sourceText: raw.sourceText.trim().slice(0, 2000),
+        sourceText: anchor.sourceText,
+        anchored: anchor.anchored,
+        sourceOffset: anchor.sourceOffset,
         page: raw.page,
         confidence,
       },
@@ -286,6 +306,7 @@ export async function runInboundExtraction(
       mode: isTextMode ? "text" : "vision",
       providerType: args.providerType,
       facts: facts.length,
+      unanchored,
       conditions: facts.filter((f) => f.factType === "CONDITION").length,
       observations: facts.filter((f) => f.factType === "OBSERVATION").length,
       medications: facts.filter((f) => f.factType === "MEDICATION_STATEMENT")
diff --git a/src/lib/documents/store.ts b/src/lib/documents/store.ts
index 3b999754b..65998724e 100644
--- a/src/lib/documents/store.ts
+++ b/src/lib/documents/store.ts
@@ -159,9 +159,28 @@ export function encryptFactProvenance(
   return encryptToBytes(JSON.stringify(provenance));
 }
 
-/** Decrypt a staged fact's provenance back to its DTO shape. */
+/**
+ * Decrypt a staged fact's provenance back to its DTO shape.
+ *
+ * Rows written before provenance was anchored carry the model's own echo of the
+ * span with no record of whether it ever matched the document. That is exactly
+ * the unverified case, so they resolve to `anchored: false`. The stored text is
+ * preserved rather than blanked — it is the only provenance those rows have —
+ * but the flag stops a consumer presenting it as a checked transcription.
+ */
 export function decryptFactProvenance(buf: Uint8Array): FactProvenance {
-  return JSON.parse(decryptFromBytes(buf)) as FactProvenance;
+  const raw = JSON.parse(decryptFromBytes(buf)) as Partial<FactProvenance>;
+  const anchored = raw.anchored === true;
+  return {
+    sourceText: typeof raw.sourceText === "string" ? raw.sourceText : "",
+    anchored,
+    sourceOffset:
+      anchored && typeof raw.sourceOffset === "number"
+        ? raw.sourceOffset
+        : null,
+    page: typeof raw.page === "number" ? raw.page : null,
+    confidence: typeof raw.confidence === "number" ? raw.confidence : 0,
+  };
 }
 
 /**
diff --git a/src/lib/jobs/__tests__/document-summary-catchup.test.ts b/src/lib/jobs/__tests__/document-summary-catchup.test.ts
new file mode 100644
index 000000000..e3666f4d4
--- /dev/null
+++ b/src/lib/jobs/__tests__/document-summary-catchup.test.ts
@@ -0,0 +1,171 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+/**
+ * The auto-read catch-up pass.
+ *
+ * Documents are summarised by a job enqueued at UPLOAD time that no-ops while
+ * the `documentsAutoAiRead` opt-in is OFF, so a vault filled before the flip was
+ * never read and the toggle appeared to do nothing. These tests pin the catch-up
+ * that closes that hole, and the three properties it must not lose: it stays
+ * bounded, it stays idempotent, and it grants no consent or budget of its own.
+ */
+
+vi.mock("@/lib/logging/context", () => ({ annotate: vi.fn() }));
+vi.mock("@/lib/db", () => ({
+  prisma: { inboundDocument: { findMany: vi.fn() } },
+}));
+vi.mock("@/lib/jobs/boss-instance", () => ({ getGlobalBoss: vi.fn() }));
+vi.mock("@/lib/documents/document-settings", () => ({
+  documentAutoReadEnabled: vi.fn(),
+}));
+vi.mock("@/lib/jobs/document-summary", () => ({
+  enqueueDocumentSummary: vi.fn(),
+}));
+
+import {
+  enqueueSummaryCatchUp,
+  runSummaryCatchUpForUser,
+  MAX_ENQUEUES_PER_RUN,
+  DOCUMENT_SUMMARY_CATCHUP_QUEUE,
+} from "../document-summary-catchup";
+import { prisma } from "@/lib/db";
+import { getGlobalBoss } from "@/lib/jobs/boss-instance";
+import { documentAutoReadEnabled } from "@/lib/documents/document-settings";
+import { enqueueDocumentSummary } from "@/lib/jobs/document-summary";
+import { annotate } from "@/lib/logging/context";
+
+const findMany = vi.mocked(prisma.inboundDocument.findMany);
+const mockEnqueueSummary = vi.mocked(enqueueDocumentSummary);
+const mockAutoRead = vi.mocked(documentAutoReadEnabled);
+
+/** Serve `total` document ids across the job's id-cursor paged walk. */
+function serveDocuments(total: number) {
+  const ids = Array.from({ length: total }, (_, i) => ({
+    id: `doc-${String(i).padStart(5, "0")}`,
+  }));
+  findMany.mockImplementation((async (args: {
+    take: number;
+    cursor?: { id: string };
+  }) => {
+    const start = args.cursor
+      ? ids.findIndex((d) => d.id === args.cursor!.id) + 1
+      : 0;
+    return ids.slice(start, start + args.take);
+  }) as unknown as typeof findMany);
+}
+
+beforeEach(() => {
+  vi.clearAllMocks();
+  mockAutoRead.mockResolvedValue(true);
+  mockEnqueueSummary.mockResolvedValue({ enqueued: true });
+});
+
+describe("runSummaryCatchUpForUser", () => {
+  it("enqueues a summary for every already-stored un-summarised document", async () => {
+    serveDocuments(3);
+
+    const result = await runSummaryCatchUpForUser("user-1");
+
+    expect(result).toEqual({ enqueued: 3, capped: false });
+    expect(mockEnqueueSummary).toHaveBeenCalledTimes(3);
+    expect(mockEnqueueSummary).toHaveBeenCalledWith("user-1", "doc-00000");
+    expect(mockEnqueueSummary).toHaveBeenCalledWith("user-1", "doc-00002");
+  });
+
+  it("only considers documents that have no summary yet", async () => {
+    // Idempotency floor: a re-run cannot redo finished work because a
+    // summarised document is not in the candidate set at all.
+    serveDocuments(1);
+
+    await runSummaryCatchUpForUser("user-1");
+
+    const where = findMany.mock.calls[0]![0]!.where;
+    expect(where).toMatchObject({
+      userId: "user-1",
+      deletedAt: null,
+      summaryEncrypted: null,
+    });
+  });
+
+  it("stops at the documented cap instead of queueing a whole vault", async () => {
+    serveDocuments(MAX_ENQUEUES_PER_RUN + 50);
+
+    const result = await runSummaryCatchUpForUser("user-1");
+
+    expect(result.enqueued).toBe(MAX_ENQUEUES_PER_RUN);
+    expect(result.capped).toBe(true);
+    expect(mockEnqueueSummary).toHaveBeenCalledTimes(MAX_ENQUEUES_PER_RUN);
+  });
+
+  it("re-reads the opt-in and does nothing when it was flipped back OFF", async () => {
+    // Consent race: the PATCH that scheduled the pass is not authority enough.
+    serveDocuments(5);
+    mockAutoRead.mockResolvedValue(false);
+
+    const result = await runSummaryCatchUpForUser("user-1");
+
+    expect(result).toEqual({ enqueued: 0, capped: false });
+    expect(mockEnqueueSummary).not.toHaveBeenCalled();
+    expect(findMany).not.toHaveBeenCalled();
+  });
+
+  it("routes work through the ordinary summary job, granting nothing itself", async () => {
+    // The per-document job is what re-asserts egress consent and reserves the
+    // daily budget. The catch-up must not have its own provider or budget path.
+    serveDocuments(2);
+
+    await runSummaryCatchUpForUser("user-1");
+
+    expect(mockEnqueueSummary).toHaveBeenCalledTimes(2);
+    for (const call of mockEnqueueSummary.mock.calls) {
+      expect(call[0]).toBe("user-1");
+    }
+  });
+
+  it("emits the catch-up wide event", async () => {
+    serveDocuments(2);
+
+    await runSummaryCatchUpForUser("user-1");
+
+    expect(annotate).toHaveBeenCalledWith({
+      action: { name: "documents.autoRead.catchUp" },
+      meta: { enqueued: 2, capped: false },
+    });
+  });
+});
+
+describe("enqueueSummaryCatchUp", () => {
+  it("coalesces a double toggle onto one per-user singleton key", async () => {
+    const send = vi.fn().mockResolvedValue("job-1");
+    vi.mocked(getGlobalBoss).mockReturnValue({
+      send,
+    } as unknown as ReturnType<typeof getGlobalBoss>);
+
+    await enqueueSummaryCatchUp("user-1");
+    await enqueueSummaryCatchUp("user-1");
+
+    expect(send).toHaveBeenCalledTimes(2);
+    for (const call of send.mock.calls) {
+      expect(call[0]).toBe(DOCUMENT_SUMMARY_CATCHUP_QUEUE);
+      expect(call[2]).toMatchObject({
+        singletonKey: "document-summary-catchup|user-1",
+      });
+    }
+  });
+
+  it("is a no-op without a boss and never throws on a send failure", async () => {
+    vi.mocked(getGlobalBoss).mockReturnValue(
+      null as unknown as ReturnType<typeof getGlobalBoss>,
+    );
+    await expect(enqueueSummaryCatchUp("user-1")).resolves.toEqual({
+      enqueued: false,
+    });
+
+    vi.mocked(getGlobalBoss).mockReturnValue({
+      send: vi.fn().mockRejectedValue(new Error("down")),
+    } as unknown as ReturnType<typeof getGlobalBoss>);
+    await expect(enqueueSummaryCatchUp("user-1")).resolves.toEqual({
+      enqueued: false,
+    });
+  });
+});
diff --git a/src/lib/jobs/document-summary-catchup.ts b/src/lib/jobs/document-summary-catchup.ts
new file mode 100644
index 000000000..9acb154fe
--- /dev/null
+++ b/src/lib/jobs/document-summary-catchup.ts
@@ -0,0 +1,164 @@
+/**
+ * Catch-up pass for documents stored BEFORE the auto-read opt-in was turned on.
+ *
+ * The per-document summary job is enqueued at UPLOAD time and no-ops when
+ * `documentsAutoAiRead` is OFF. That leaves an obvious hole: a user who uploads
+ * their vault first and flips the toggle afterwards gets nothing. Every document
+ * they already hold was enqueued while the flag was OFF, the job no-opped, and
+ * nothing ever re-enqueues them — so the switch reads as broken. It only ever
+ * worked for documents uploaded after the flip.
+ *
+ * A genuine OFF→ON transition on `PATCH /api/auth/me/documents-auto-ai-read`
+ * enqueues one pass of this job, which walks the user's un-summarised documents
+ * and enqueues the ordinary per-document summary job for each.
+ *
+ * What this job does NOT do is grant anything. It only enqueues; every gate
+ * still runs inside `runDocumentSummaryJob` — the opt-in is re-read, the egress
+ * consent is re-asserted per document, and the daily token budget is reserved
+ * and reconciled exactly as on the upload path. Retroactive work is not a reason
+ * to skip a consent receipt or a budget ceiling, so it does not.
+ *
+ * Bounded and idempotent:
+ *   - the candidate set is documents with NO summary, so a document drops out
+ *     the moment its summary lands and a re-run cannot redo finished work;
+ *   - an id-cursor forward walk capped at `MAX_ENQUEUES_PER_RUN` (see the
+ *     constant for why that number) keeps one flip from queueing a whole vault;
+ *   - the per-user `singletonKey` plus the queue's `short` policy collapses a
+ *     second flip while a pass is still queued, and the per-document enqueue
+ *     carries its own singleton on top;
+ *   - `runDocumentSummaryJob` skips any document that already has a summary, so
+ *     even a duplicate that slips past both singletons is a cheap no-op.
+ *
+ * The queue MUST be registered in the maintenance registrar
+ * (`src/lib/jobs/reminder/register-maintenance.ts`) so pg-boss provisions it.
+ */
+import { documentAutoReadEnabled } from "@/lib/documents/document-settings";
+import { prisma } from "@/lib/db";
+import { getGlobalBoss } from "@/lib/jobs/boss-instance";
+import { enqueueDocumentSummary } from "@/lib/jobs/document-summary";
+import { annotate } from "@/lib/logging/context";
+
+export const DOCUMENT_SUMMARY_CATCHUP_QUEUE = "document-summary-catchup";
+
+/** Serial concurrency — cheap discovery + fan-out enqueues. */
+export const DOCUMENT_SUMMARY_CATCHUP_CONCURRENCY = 1;
+
+/** Discovery page size (id-only). */
+const PAGE_SIZE = 100;
+
+/**
+ * Max per-document summary jobs one catch-up pass enqueues.
+ *
+ * Deliberately far below the thumbnail backfill's cap: a thumbnail is local
+ * compute, a summary is a provider call against the user's daily token budget.
+ * The budget gate already stops runaway spend (every job past the ceiling
+ * no-ops), so this cap is about not dumping an entire vault onto the queue in
+ * one go — a large library converges over repeated flips and the ordinary
+ * upload path rather than in a single burst. Raising it costs queue depth, not
+ * money.
+ */
+export const MAX_ENQUEUES_PER_RUN = 200;
+
+export interface SummaryCatchUpPayload {
+  userId: string;
+  enqueuedAt?: string;
+}
+
+export interface SummaryCatchUpSummary {
+  enqueued: number;
+  /** True when the pass stopped at the cap with candidates still outstanding. */
+  capped: boolean;
+}
+
+/**
+ * Enqueue summary jobs for one user's un-summarised documents. Re-reads the
+ * opt-in first: a user who flipped the toggle back OFF between the PATCH and
+ * this job running gets nothing, which keeps the pass fail-closed against a
+ * consent race the same way the per-document job is.
+ */
+export async function runSummaryCatchUpForUser(
+  userId: string,
+): Promise<SummaryCatchUpSummary> {
+  if (!userId) return { enqueued: 0, capped: false };
+
+  // Fail-closed on the toggle. The PATCH that scheduled this pass is not
+  // authority enough — the flag is re-read at run time, exactly as the
+  // per-document job does before it egresses anything.
+  if (!(await documentAutoReadEnabled(userId))) {
+    annotate({
+      action: { name: "documents.autoRead.catchUpSkipped" },
+      meta: { reason: "opt-out" },
+    });
+    return { enqueued: 0, capped: false };
+  }
+
+  let enqueued = 0;
+  let capped = false;
+  let cursor: string | null = null;
+
+  for (;;) {
+    if (enqueued >= MAX_ENQUEUES_PER_RUN) {
+      capped = true;
+      break;
+    }
+    const rows: { id: string }[] = await prisma.inboundDocument.findMany({
+      where: { userId, deletedAt: null, summaryEncrypted: null },
+      select: { id: true },
+      orderBy: { id: "asc" },
+      take: PAGE_SIZE,
+      ...(cursor ? { cursor: { id: cursor }, skip: 1 } : {}),
+    });
+    if (rows.length === 0) break;
+
+    for (const { id } of rows) {
+      if (enqueued >= MAX_ENQUEUES_PER_RUN) {
+        capped = true;
+        break;
+      }
+      const { enqueued: ok } = await enqueueDocumentSummary(userId, id);
+      if (ok) enqueued += 1;
+    }
+
+    cursor = rows[rows.length - 1]!.id;
+    if (rows.length < PAGE_SIZE) break;
+  }
+
+  annotate({
+    action: { name: "documents.autoRead.catchUp" },
+    meta: { enqueued, capped },
+  });
+  return { enqueued, capped };
+}
+
+/**
+ * Enqueue one catch-up pass for a user. Called on a genuine OFF→ON flip of the
+ * auto-read opt-in. Coalesced by `singletonKey` per user so flipping the toggle
+ * twice cannot queue two passes. Fire-and-forget — a missing boss (worker not
+ * up) is a no-op, and a `boss.send` failure is swallowed, so the catch-up can
+ * never fail the settings write that scheduled it.
+ */
+export async function enqueueSummaryCatchUp(
+  userId: string,
+): Promise<{ enqueued: boolean }> {
+  const boss = getGlobalBoss();
+  if (!boss) return { enqueued: false };
+  const payload: SummaryCatchUpPayload = {
+    userId,
+    enqueuedAt: new Date().toISOString(),
+  };
+  try {
+    const jobId = await boss.send(DOCUMENT_SUMMARY_CATCHUP_QUEUE, payload, {
+      retryLimit: 2,
+      retryDelay: 60,
+      retryBackoff: true,
+      singletonKey: `document-summary-catchup|${userId}`,
+    });
+    return { enqueued: Boolean(jobId) };
+  } catch (err) {
+    annotate({
+      action: { name: "documents.autoRead.catchUpEnqueueFailed" },
+      meta: { reason: err instanceof Error ? err.name : "unknown" },
+    });
+    return { enqueued: false };
+  }
+}
diff --git a/src/lib/jobs/reminder/register-maintenance.ts b/src/lib/jobs/reminder/register-maintenance.ts
index f7950400f..c258a79ca 100644
--- a/src/lib/jobs/reminder/register-maintenance.ts
+++ b/src/lib/jobs/reminder/register-maintenance.ts
@@ -93,6 +93,12 @@ import {
   runDocumentSummaryJob,
   type DocumentSummaryPayload,
 } from "@/lib/jobs/document-summary";
+import {
+  DOCUMENT_SUMMARY_CATCHUP_QUEUE,
+  DOCUMENT_SUMMARY_CATCHUP_CONCURRENCY,
+  runSummaryCatchUpForUser,
+  type SummaryCatchUpPayload,
+} from "@/lib/jobs/document-summary-catchup";
 import {
   DOCUMENT_THUMBNAIL_BACKFILL_QUEUE,
   DOCUMENT_THUMBNAIL_BACKFILL_CONCURRENCY,
@@ -359,6 +365,11 @@ const allQueues = [
   // egress consent + budget; persists the summary encrypted. Without this entry
   // pg-boss never provisions the queue and every upload enqueue silently no-ops.
   DOCUMENT_SUMMARY_QUEUE,
+  // v1.30.31 — auto-read catch-up. Scheduled on a genuine OFF→ON flip of the
+  // `documentsAutoAiRead` opt-in; fans out summary jobs for documents that were
+  // uploaded while the flag was still OFF. Without this entry pg-boss never
+  // provisions the queue and the catch-up enqueue silently no-ops.
+  DOCUMENT_SUMMARY_CATCHUP_QUEUE,
 ];
 
 const schedules: ScheduleEntry[] = [
@@ -507,6 +518,11 @@ const queuePolicies: QueuePolicyTable = {
     reason:
       "Per-document, no re-converging discovery pass. Collapse queued duplicates only.",
   },
+  [DOCUMENT_SUMMARY_CATCHUP_QUEUE]: {
+    policy: "short",
+    reason:
+      "Per-user, keyed on the opt-in flip. Collapse a double toggle into one pass; the pass re-reads its candidate set when it starts.",
+  },
 };
 
 /**
@@ -890,6 +906,34 @@ export async function registerMaintenanceQueues(
     },
   );
 
+  // Document AI — auto-read catch-up worker. A genuine OFF→ON flip of the
+  // `documentsAutoAiRead` opt-in sends one per-user job; this handler fans out
+  // per-document summary jobs for that user's already-stored, un-summarised
+  // documents (the upload-time enqueue no-opped while the flag was OFF). It
+  // only enqueues — the opt-in, egress consent and budget gates all still run
+  // per document inside the summary job. Serial concurrency.
+  await boss.work<SummaryCatchUpPayload>(
+    DOCUMENT_SUMMARY_CATCHUP_QUEUE,
+    { localConcurrency: DOCUMENT_SUMMARY_CATCHUP_CONCURRENCY },
+    async (jobs) => {
+      for (const job of jobs) {
+        const { userId } = job.data;
+        if (!userId) continue;
+        try {
+          await runSummaryCatchUpForUser(userId);
+        } catch (err) {
+          recordError();
+          workerLog(
+            "error",
+            `[document-summary-catchup] user=${userId} failed`,
+            err,
+          );
+          throw err;
+        }
+      }
+    },
+  );
+
   // Document vault — boot-time preview-thumbnail backfill worker. The boot
   // discovery sends one per-user job; this handler fans out per-document
   // thumbnail jobs for that user's not-yet-thumbnailed documents. Serial
diff --git a/src/lib/labs/vault-link.ts b/src/lib/labs/vault-link.ts
index 9d6df818c..4d4a42d5d 100644
--- a/src/lib/labs/vault-link.ts
+++ b/src/lib/labs/vault-link.ts
@@ -97,8 +97,12 @@ export async function linkOcrLabsToVaultDocument(
         confidence: 1,
         needsReview: false,
         dataEncrypted: encryptFactData(observationFromLab(lab)),
+        // No document span to point at: this fact is minted from an already
+        // committed lab row, not transcribed from the document text.
         provenanceEncrypted: encryptFactProvenance({
           sourceText: "",
+          anchored: false,
+          sourceOffset: null,
           page: null,
           confidence: 1,
         }),
diff --git a/src/lib/openapi/routes/documents.ts b/src/lib/openapi/routes/documents.ts
index 06a4bc989..053125600 100644
--- a/src/lib/openapi/routes/documents.ts
+++ b/src/lib/openapi/routes/documents.ts
@@ -97,6 +97,8 @@ documentBulkSchema.meta({
 
 const factProvenance = z.object({
   sourceText: z.string(),
+  anchored: z.boolean(),
+  sourceOffset: z.number().nullable(),
   page: z.number().nullable(),
   confidence: z.number(),
 });
diff --git a/src/lib/rollups/__tests__/measurement-rollups.test.ts b/src/lib/rollups/__tests__/measurement-rollups.test.ts
index d8a7a2747..d8792c49d 100644
--- a/src/lib/rollups/__tests__/measurement-rollups.test.ts
+++ b/src/lib/rollups/__tests__/measurement-rollups.test.ts
@@ -567,6 +567,124 @@ describe("persistRollupRows — large path (via recomputeUserRollups)", () => {
   });
 });
 
+/**
+ * A recompute REPLACES every bucket in the window it was asked for.
+ *
+ * Scoping the delete to the [min, max] range of the rows the aggregate
+ * RETURNED made the repair self-limiting in exactly the case that needs it: a
+ * bucket whose source rows all disappeared is not in the returned range, so it
+ * survived with its stale aggregate while `probeRollupCoverage` still reported
+ * `hasBuckets = true` and the read-swap served it instead of falling back to
+ * live SQL. The write hook masked this for DAY (it deletes its own bucket by
+ * hand when the day empties) but nothing covered the WEEK / MONTH / YEAR
+ * worker, which recomputes one bucket span at a time.
+ */
+describe("recomputeUserRollups — prunes the whole recomputed window", () => {
+  function rowsInBucket(bucketStart: Date, type = "WEIGHT") {
+    return [
+      {
+        type,
+        source: "MANUAL",
+        bucket_start: bucketStart,
+        count: BigInt(1),
+        mean: 80,
+        min_value: 80,
+        max_value: 80,
+        sum_value: 80,
+        sd: 0,
+        slope: 0,
+        r2: 0,
+      },
+    ];
+  }
+
+  it("deletes the stale bucket when the window's last reading is gone", async () => {
+    // The exact damage: the user deleted their last WEIGHT reading of the
+    // week, so the WEEK aggregate for that span now returns nothing.
+    queryRawUnsafe.mockResolvedValueOnce([]);
+
+    await recomputeUserRollups("user-1", {
+      granularities: ["WEEK"],
+      types: ["WEIGHT"],
+      from: new Date(Date.UTC(2024, 2, 4)),
+      to: new Date(Date.UTC(2024, 2, 11)),
+    });
+
+    expect(deleteMany).toHaveBeenCalledTimes(1);
+    const where = deleteMany.mock.calls[0][0].where;
+    expect(where).toMatchObject({
+      userId: "user-1",
+      granularity: "WEEK",
+      type: { in: ["WEIGHT"] },
+    });
+    expect(where.bucketStart.gte.toISOString()).toBe(
+      "2024-03-04T00:00:00.000Z",
+    );
+    expect(where.bucketStart.lt.toISOString()).toBe("2024-03-11T00:00:00.000Z");
+    // Nothing to write — the window is authoritatively empty.
+    expect(txExecuteRawUnsafe).not.toHaveBeenCalled();
+  });
+
+  it("covers the requested window, not just the range the aggregate returned", async () => {
+    // Readings survive only in the middle of the window; the buckets at both
+    // edges lost theirs. The delete must still reach the edges.
+    queryRawUnsafe.mockResolvedValueOnce(
+      rowsInBucket(new Date(Date.UTC(2024, 2, 10))),
+    );
+    txExecuteRawUnsafe.mockResolvedValueOnce(1);
+
+    await recomputeUserRollups("user-1", {
+      granularities: ["DAY"],
+      from: new Date(Date.UTC(2024, 2, 1)),
+      to: new Date(Date.UTC(2024, 2, 20)),
+    });
+
+    const where = deleteMany.mock.calls[0][0].where;
+    expect(where.bucketStart.gte.toISOString()).toBe(
+      "2024-03-01T00:00:00.000Z",
+    );
+    expect(where.bucketStart.lt.toISOString()).toBe("2024-03-20T00:00:00.000Z");
+  });
+
+  it("prunes every type when the recompute was not type-scoped", async () => {
+    // A type that lost all its readings drops out of the returned rows
+    // entirely, so a `type: { in: <returned types> }` filter could never
+    // reach its buckets.
+    queryRawUnsafe.mockResolvedValueOnce(
+      rowsInBucket(new Date(Date.UTC(2024, 2, 10))),
+    );
+    txExecuteRawUnsafe.mockResolvedValueOnce(1);
+
+    await recomputeUserRollups("user-1", {
+      granularities: ["DAY"],
+      from: new Date(Date.UTC(2024, 2, 1)),
+      to: new Date(Date.UTC(2024, 2, 20)),
+    });
+
+    const where = deleteMany.mock.calls[0][0].where;
+    expect(where.type).toBeUndefined();
+  });
+
+  it("still writes the fresh rows it did compute", async () => {
+    queryRawUnsafe.mockResolvedValueOnce(
+      rowsInBucket(new Date(Date.UTC(2024, 2, 10))),
+    );
+    txExecuteRawUnsafe.mockResolvedValueOnce(1);
+
+    const result = await recomputeUserRollups("user-1", {
+      granularities: ["DAY"],
+      from: new Date(Date.UTC(2024, 2, 1)),
+      to: new Date(Date.UTC(2024, 2, 20)),
+    });
+
+    // Delete and upsert share the one interactive transaction, so a reader
+    // never observes the pruned window without its replacement rows.
+    expect(transaction).toHaveBeenCalledTimes(1);
+    expect(txExecuteRawUnsafe).toHaveBeenCalledTimes(1);
+    expect(result.rowsUpserted).toBe(1);
+  });
+});
+
 describe("enqueueRollupRecompute", () => {
   it("is a silent no-op when no boss is attached", async () => {
     getGlobalBossMock.mockReturnValue(null);
diff --git a/src/lib/rollups/measurement-rollups.ts b/src/lib/rollups/measurement-rollups.ts
index 519750ed2..c3e5d6552 100644
--- a/src/lib/rollups/measurement-rollups.ts
+++ b/src/lib/rollups/measurement-rollups.ts
@@ -26,6 +26,13 @@
  *     side (`analytics`, `comprehensive`, `summaries-slice`) decides
  *     whether to fall through to the live aggregator + persist-on-miss
  *     via its own per-tier freshness probe.
+ *
+ * Repair contract: a recompute REPLACES every bucket in the window it was
+ * asked for. That includes buckets the live aggregate returns nothing for —
+ * without it, a bucket outlives the rows it was folded from. See the
+ * `deleteWhere` note in `persistRollupRows` for the three shapes that hole
+ * took. Nothing here reads both tiers; the rollup replaces the legacy read and
+ * falls back to live SQL only on a coverage miss.
  */
 import { prisma } from "@/lib/db";
 import { getGlobalBoss } from "@/lib/jobs/boss-instance";
@@ -217,9 +224,15 @@ export async function recomputeUserRollups(
       from: alignedFrom,
       to: alignedTo,
     });
-    if (rows.length === 0) continue;
-
-    rowsUpserted += await persistRollupRows(userId, granularity, rows);
+    // No `continue` on an empty aggregate: an empty result is a STATEMENT —
+    // this window holds no readings any more — and the prune below is what
+    // acts on it. Skipping the write here is what let a bucket outlive its
+    // source rows.
+    rowsUpserted += await persistRollupRows(userId, granularity, rows, {
+      from: alignedFrom,
+      to: alignedTo,
+      types: opts.types,
+    });
   }
 
   return { rowsUpserted, durationMs: Date.now() - startedAt };
@@ -263,7 +276,9 @@ export async function recomputeBucketsForMeasurement(
       },
     });
   } else {
-    await persistRollupRows(userId, "DAY", rows);
+    // No prune scope: this call owns exactly one (type, day) bucket and the
+    // branch above already deletes it by hand when the day emptied out.
+    await persistRollupRows(userId, "DAY", rows, null);
   }
 
   // WEEK / MONTH / YEAR — enqueue. Each granularity covers a range
@@ -530,40 +545,102 @@ async function runRollupAggregate(input: {
 }
 
 /**
- * UPSERT the aggregate rows into `measurement_rollups`. Returns the
- * number of rows touched. Uses a chunked raw insert with
- * `ON CONFLICT DO UPDATE` so the round-trip count is bounded
- * regardless of fan-out width AND a concurrent writer on the same
- * partition can never raise a unique violation.
+ * The window a recompute authoritatively re-derived. Every rollup bucket inside
+ * it is replaced by the freshly computed rows — including buckets the aggregate
+ * returned NOTHING for, which is the only way a bucket whose source rows all
+ * disappeared can be removed. `types` narrows the prune to the types the
+ * aggregate was scoped to; `undefined` means it covered every type.
  */
-async function persistRollupRows(
+interface PruneScope {
+  from: Date;
+  to: Date;
+  types?: MeasurementType[];
+}
+
+/**
+ * Delete scope for a caller that wrote a single known bucket rather than a
+ * re-derived window: the [min, max] bucket range of the rows themselves, per
+ * type. Correct there precisely because the caller already knows which bucket
+ * it touched and deletes it by hand when the aggregate comes back empty.
+ */
+function buildReturnedRangeDeleteWhere(
   userId: string,
   granularity: RollupGranularity,
   rows: RollupRow[],
-): Promise<number> {
-  if (rows.length === 0) return 0;
-
-  // v1.11.1 — rows are now minted per source. Delete-then-upsert the affected
-  // (type, bucket) partitions across ALL sources before writing, so a source
-  // that disappeared from a bucket (the user disconnected a provider, or
-  // deleted the last reading from one device) does not strand a stale
-  // per-source row that a plain upsert would never revisit. The delete is
-  // scoped to the [min, max] bucket range of the rows being written, per type
-  // — an indexed range delete, cheap on the single-day write hook and bounded
-  // on the full backfill.
+) {
   const types = [...new Set(rows.map((r) => r.type as MeasurementType))];
-  let minBucket = rows[0].bucket_start;
-  let maxBucket = rows[0].bucket_start;
+  let minBucket = rows[0]!.bucket_start;
+  let maxBucket = rows[0]!.bucket_start;
   for (const r of rows) {
     if (r.bucket_start < minBucket) minBucket = r.bucket_start;
     if (r.bucket_start > maxBucket) maxBucket = r.bucket_start;
   }
-  const deleteWhere = {
+  return {
     userId,
     granularity,
     type: { in: types },
     bucketStart: { gte: minBucket, lte: maxBucket },
   };
+}
+
+/**
+ * UPSERT the aggregate rows into `measurement_rollups`. Returns the
+ * number of rows touched. Uses a chunked raw insert with
+ * `ON CONFLICT DO UPDATE` so the round-trip count is bounded
+ * regardless of fan-out width AND a concurrent writer on the same
+ * partition can never raise a unique violation.
+ *
+ * `prune` is the recomputed window when the caller re-derived a whole span
+ * (`recomputeUserRollups`), or `null` when it wrote a single known bucket and
+ * handles its own empty case (`recomputeBucketsForMeasurement`). See the
+ * `deleteWhere` note below for why the distinction matters.
+ */
+async function persistRollupRows(
+  userId: string,
+  granularity: RollupGranularity,
+  rows: RollupRow[],
+  prune: PruneScope | null,
+): Promise<number> {
+  // v1.11.1 — rows are now minted per source. Delete-then-upsert the affected
+  // (type, bucket) partitions across ALL sources before writing, so a source
+  // that disappeared from a bucket (the user disconnected a provider, or
+  // deleted the last reading from one device) does not strand a stale
+  // per-source row that a plain upsert would never revisit.
+  //
+  // The delete is scoped to the RECOMPUTED WINDOW when the caller supplies one,
+  // not to the [min, max] range of the rows coming back. Scoping it to the
+  // returned rows made the repair self-limiting in exactly the case that needs
+  // it: a recompute can only ever overwrite a bucket the live aggregate still
+  // produces, so a bucket whose source rows all disappeared was never in the
+  // delete range and survived with its stale aggregate. Three shapes of the
+  // same hole — an empty aggregate skipped the write entirely, a returned range
+  // narrower than the requested window left the edges untouched, and a type
+  // that lost every reading dropped out of `type: { in: … }` altogether. The
+  // WEEK / MONTH / YEAR worker hit all three: deleting the last reading of a
+  // type in a week dropped the DAY bucket (the write hook deletes that one by
+  // hand) while the coarser buckets kept the stale aggregate forever, and the
+  // coverage probe still reported `hasBuckets = true` so the read-swap served
+  // them instead of falling back to live SQL.
+  const pruneWhere = prune
+    ? {
+        userId,
+        granularity,
+        ...(prune.types ? { type: { in: prune.types } } : {}),
+        bucketStart: { gte: prune.from, lt: prune.to },
+      }
+    : null;
+
+  if (rows.length === 0) {
+    // Nothing to write. With a prune scope there is still work to do: the
+    // window is authoritatively empty, so every bucket in it must go. No
+    // transaction needed — there is no insert leg that could leave a gap.
+    if (!pruneWhere) return 0;
+    await prisma.measurementRollup.deleteMany({ where: pruneWhere });
+    return 0;
+  }
+
+  const deleteWhere =
+    pruneWhere ?? buildReturnedRangeDeleteWhere(userId, granularity, rows);
 
   // v1.28.33 (issue #486) — the insert leg is a raw
   // `INSERT … ON CONFLICT (pk) DO UPDATE` instead of `createMany`. The
diff --git a/src/lib/validations/inbound-documents.ts b/src/lib/validations/inbound-documents.ts
index db4c89c16..cf59d774d 100644
--- a/src/lib/validations/inbound-documents.ts
+++ b/src/lib/validations/inbound-documents.ts
@@ -195,8 +195,22 @@ export type InboundExtraction = z.infer<typeof inboundExtractionSchema>;
 
 /** Per-field provenance carried on every staged fact. */
 export interface FactProvenance {
-  /** The verbatim source span the value was transcribed from. */
+  /**
+   * The verbatim source span the value was transcribed from, read back out of
+   * the extracted document text — NOT the model's echo of it. Empty string when
+   * the span could not be located (see `anchored`).
+   */
   sourceText: string;
+  /**
+   * True only when `sourceText` was resolved against the extracted document
+   * text. False means the quote is unverifiable and none is stored: either the
+   * model's echo matched nothing in the source, or the extraction ran in vision
+   * mode, where there is no extracted text to verify against. A reviewer must
+   * read an unanchored fact against the original document itself.
+   */
+  anchored: boolean;
+  /** Character offset of the span in the extracted text; null when unanchored. */
+  sourceOffset: number | null;
   /** Optional 0-based page index. */
   page: number | null;
   /** The model's self-reported confidence (0..1). */