diff --git a/packages/jobs/src/driver-nats.test.ts b/packages/jobs/src/driver-nats.test.ts
index 8ba04c8d..0ac55ed8 100644
--- a/packages/jobs/src/driver-nats.test.ts
+++ b/packages/jobs/src/driver-nats.test.ts
@@ -10,7 +10,7 @@ import { createNatsDriver } from './driver-nats';
 import { JobsNotImplementedError } from './errors';
 
 const FIX =
-  "set jobs: { driver: 'postgres' } in app.config.ts, then: x jobs drain --to memory --json";
+  'call setJobDriver(createPgDriver()) at boot instead of this driver, then move what is already queued: x jobs drain --to memory --json';
 
 // Every stub method throws SYNCHRONOUSLY (`unavailable` is `throw`, not a rejected promise), so
 // the call under test has to happen inside the try — passed as a promise, `driver.enqueue(...)`
diff --git a/packages/jobs/src/driver-nats.ts b/packages/jobs/src/driver-nats.ts
index 4c1eb806..434a5144 100644
--- a/packages/jobs/src/driver-nats.ts
+++ b/packages/jobs/src/driver-nats.ts
@@ -16,10 +16,13 @@ import type {
 import { JobsNotImplementedError } from './errors';
 import type { StepRecord, StepStore } from './steps';
 
-// Names the config edit that actually removes the stub, plus the runnable command for whatever
-// is already queued. The nats driver lands in v2; there is no flag that turns this one on.
+// Names the seam that actually replaces the stub, plus the runnable command for whatever is
+// already queued. NOT `jobs: { driver }` in app.config.ts, which this line said until 2026-08-20:
+// `JobsConfig.driver` has no reader anywhere (see `driver.ts`'s header), so that edit repairs
+// nothing and the reader is sent back to the same throw. #223 removes the field.
+// The nats driver lands in v2; there is no flag that turns this one on.
 const FIX =
-  "set jobs: { driver: 'postgres' } in app.config.ts, then: x jobs drain --to memory --json";
+  'call setJobDriver(createPgDriver()) at boot instead of this driver, then move what is already queued: x jobs drain --to memory --json';
 
 const unavailable = (method: string): never => {
   throw new JobsNotImplementedError({ feature: `nats jobs driver (${method})`, fix: FIX });
diff --git a/packages/jobs/src/driver-redis.test.ts b/packages/jobs/src/driver-redis.test.ts
index 8d7c32f5..dc54ccea 100644
--- a/packages/jobs/src/driver-redis.test.ts
+++ b/packages/jobs/src/driver-redis.test.ts
@@ -10,7 +10,7 @@ import { createRedisDriver } from './driver-redis';
 import { JobsNotImplementedError } from './errors';
 
 const FIX =
-  "set jobs: { driver: 'postgres' } in app.config.ts, then: x jobs drain --to memory --json";
+  'call setJobDriver(createPgDriver()) at boot instead of this driver, then move what is already queued: x jobs drain --to memory --json';
 
 // Every stub method throws SYNCHRONOUSLY (`unavailable` is `throw`, not a rejected promise), so
 // the call under test has to happen inside the try — passed as a promise, `driver.enqueue(...)`
diff --git a/packages/jobs/src/driver-redis.ts b/packages/jobs/src/driver-redis.ts
index 7baf3759..19b7d769 100644
--- a/packages/jobs/src/driver-redis.ts
+++ b/packages/jobs/src/driver-redis.ts
@@ -19,10 +19,13 @@ import type {
 import { JobsNotImplementedError } from './errors';
 import type { StepRecord, StepStore } from './steps';
 
-// Names the config edit that actually removes the stub, plus the runnable command for whatever
-// is already queued. The redis driver lands in v2; there is no flag that turns this one on.
+// Names the seam that actually replaces the stub, plus the runnable command for whatever is
+// already queued. NOT `jobs: { driver }` in app.config.ts, which this line said until 2026-08-20:
+// `JobsConfig.driver` has no reader anywhere (see `driver.ts`'s header), so that edit repairs
+// nothing and the reader is sent back to the same throw. #223 removes the field.
+// The redis driver lands in v2; there is no flag that turns this one on.
 const FIX =
-  "set jobs: { driver: 'postgres' } in app.config.ts, then: x jobs drain --to memory --json";
+  'call setJobDriver(createPgDriver()) at boot instead of this driver, then move what is already queued: x jobs drain --to memory --json';
 
 const unavailable = (method: string): never => {
   throw new JobsNotImplementedError({ feature: `redis jobs driver (${method})`, fix: FIX });
diff --git a/packages/jobs/src/errors.ts b/packages/jobs/src/errors.ts
index 91e2529a..2cdca01c 100644
--- a/packages/jobs/src/errors.ts
+++ b/packages/jobs/src/errors.ts
@@ -355,7 +355,7 @@ export class CancelUnsupportedError extends UltimateError {
     super({
       code: 'X_JOB_NOT_CANCELLABLE',
       cause: `the "${input.driver}" jobs driver cannot cancel a single job`,
-      fix: "set jobs: { driver: 'postgres' } in app.config.ts, then: x jobs cancel <id> --json",
+      fix: 'call setJobDriver(createPgDriver()) at boot — only the pg driver implements introspect.cancel — then: x jobs cancel <id> --json',
       docs: docsFor('X_JOB_NOT_CANCELLABLE'),
     });
   }
@@ -372,7 +372,7 @@ export class ConcurrencyUnenforceableError extends UltimateError {
     super({
       code: 'X_JOB_CONCURRENCY_UNENFORCEABLE',
       cause: `${input.jobs.join(', ')} declare concurrency and the "${input.driver}" jobs driver has no lease store, so the cap would hold per process and the fleet would run concurrency x replicas`,
-      fix: `remove concurrency from job("${input.jobs[0] ?? 'the job'}"), or set jobs: { driver: 'postgres' } in app.config.ts`,
+      fix: `remove concurrency from job("${input.jobs[0] ?? 'the job'}"), or call setJobDriver(createPgDriver()) at boot — the pg driver is the one with a lease store`,
       docs: docsFor('X_JOB_CONCURRENCY_UNENFORCEABLE'),
     });
   }
diff --git a/packages/jobs/src/fix-lines.test.ts b/packages/jobs/src/fix-lines.test.ts
new file mode 100644
index 00000000..a045cf51
--- /dev/null
+++ b/packages/jobs/src/fix-lines.test.ts
@@ -0,0 +1,56 @@
+// A `fix:` in this package may not tell the reader to edit `jobs.driver`.
+//
+// `JobsConfig.driver` is declared and read by NOTHING — boot always builds `createPgDriver`
+// (`driver.ts`'s header states it, `dev-queue.ts` is where it happens). Six shipped `fix:` lines
+// named that field as the repair for `X_NOT_IMPLEMENTED`, so six error paths handed an agent an
+// instruction that changes nothing and returns it to the same throw. Axiom 4 asks for the exact
+// command that repairs the failure; a no-op is the one thing a `fix:` may never be.
+//
+// The `errors` gate step cannot see this: it checks that a fix names a *command* that exists, and
+// `set jobs: { driver: 'postgres' } in app.config.ts` names none. #223 deletes the field, which is
+// breaking; this test is what stops the instruction coming back before then, and after.
+
+import { describe, expect, test } from 'bun:test';
+import { readdirSync, readFileSync } from 'node:fs';
+import { join } from 'node:path';
+
+const SRC = import.meta.dir;
+
+/** `jobs: { driver: … }` or `jobs.driver`, in either quote style, anywhere in a fix string. */
+const DEAD_FIELD = /jobs\s*[:.]\s*\{?\s*driver|jobs\.driver/;
+
+/** Every `fix:` string literal in a source file, single- or double-quoted or a template. */
+const FIX_LINE = /fix:\s*(['"`])((?:\\.|(?!\1).)*)\1/gs;
+
+const sources = (): readonly string[] =>
+  readdirSync(SRC).filter((name) => name.endsWith('.ts') && !name.endsWith('.test.ts'));
+
+describe('fix lines', () => {
+  test('no fix: instructs the reader to edit jobs.driver, which selects nothing', () => {
+    const offenders: string[] = [];
+    for (const name of sources()) {
+      const text = readFileSync(join(SRC, name), 'utf8');
+      for (const [, , body] of text.matchAll(FIX_LINE)) {
+        if (body !== undefined && DEAD_FIELD.test(body)) offenders.push(`${name}: ${body}`);
+      }
+    }
+    expect(offenders).toEqual([]);
+  });
+
+  // Guards the guard: a regex that matched nothing would pass the test above forever. This is the
+  // exact string that shipped in five places, and it must be caught.
+  test('the rule catches the string that actually shipped', () => {
+    expect(DEAD_FIELD.test("set jobs: { driver: 'postgres' } in app.config.ts")).toBe(true);
+    expect(DEAD_FIELD.test('or set jobs.driver in app.config.ts and run `x dev`')).toBe(true);
+    expect(DEAD_FIELD.test('call setJobDriver(createPgDriver()) at boot')).toBe(false);
+  });
+
+  test('every fix: in this package is non-empty', () => {
+    for (const name of sources()) {
+      const text = readFileSync(join(SRC, name), 'utf8');
+      for (const [, , body] of text.matchAll(FIX_LINE)) {
+        expect(body?.trim().length ?? 0).toBeGreaterThan(0);
+      }
+    }
+  });
+});
diff --git a/packages/jobs/src/inspect.test.ts b/packages/jobs/src/inspect.test.ts
index fcb8ff1d..4f422490 100644
--- a/packages/jobs/src/inspect.test.ts
+++ b/packages/jobs/src/inspect.test.ts
@@ -134,7 +134,8 @@ function driverWithoutIntrospect(): JobDriver {
   return rest;
 }
 
-const INTROSPECT_FIX = "set jobs: { driver: 'postgres' } in app.config.ts, then: x jobs ls --json";
+const INTROSPECT_FIX =
+  'call setJobDriver(createPgDriver()) at boot — only the pg driver implements introspect — then: x jobs ls --json';
 
 async function expectIntrospectionRequired(call: () => Promise<unknown>): Promise<void> {
   let thrown: unknown;
diff --git a/packages/jobs/src/inspect.ts b/packages/jobs/src/inspect.ts
index 2e5e5f01..319cca04 100644
--- a/packages/jobs/src/inspect.ts
+++ b/packages/jobs/src/inspect.ts
@@ -91,7 +91,7 @@ function requireIntrospection(driver: JobDriver): NonNullable<JobDriver['introsp
   if (driver.introspect === undefined) {
     throw new JobsNotImplementedError({
       feature: `introspection for the "${driver.name}" jobs driver`,
-      fix: "set jobs: { driver: 'postgres' } in app.config.ts, then: x jobs ls --json",
+      fix: 'call setJobDriver(createPgDriver()) at boot — only the pg driver implements introspect — then: x jobs ls --json',
     });
   }
   return driver.introspect;
diff --git a/packages/jobs/src/outbox.ts b/packages/jobs/src/outbox.ts
index f6198aef..680d6880 100644
--- a/packages/jobs/src/outbox.ts
+++ b/packages/jobs/src/outbox.ts
@@ -338,7 +338,7 @@ export function jobsFacade(): JobsFacade {
           throw new DriverUnavailableError({
             driver: 'none',
             cause: 'no queue driver is installed in this process',
-            fix: 'call setJobDriver(createMemoryDriver()) before enqueuing — or set jobs.driver in app.config.ts and run `x dev`',
+            fix: 'call setJobDriver(createMemoryDriver()) before enqueuing, or setJobDriver(createPgDriver()) for a real queue',
           });
         }
         return installed;