Simplify screenshot diff output

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- `diff screenshot` no longer runs the retired best-effort OCR and non-text analyzers. Their optional `ocr` and `nonTextDeltas` fields remain in the result type for source compatibility but are no longer emitted; use the baseline/current images and diff artifact with vision for qualitative interpretation.
 - Breaking: removed the deprecated `--session-locked` and `--session-lock-conflicts` flags. Use `--session-lock reject|strip` instead; passing either old flag now fails with `Unknown flag: ... Use --session-lock reject|strip instead.`
 - Breaking: removed the `replay export --format` flag. `replay export` always writes Maestro YAML.
 - Breaking: removed the unused `LeaseAllocatePayload`, `LeaseHeartbeatPayload`, and `LeaseReleasePayload` type exports from `agent-device/contracts`. Lease request metadata is fully described by `DaemonRequestMeta`.

src/__tests__/cli-diff.test.ts

@@ -202,6 +202,9 @@ describe('cli diff commands', () => {
       const payload = JSON.parse(result.stdout);
       assert.equal(payload.success, true);
       assert.equal(payload.data.match, true);
+      assert.equal(Object.hasOwn(payload.data, 'schemaVersion'), false);
+      assert.equal(Object.hasOwn(payload.data, 'ocr'), false);
+      assert.equal(Object.hasOwn(payload.data, 'nonTextDeltas'), false);
       assert.equal(payload.data.differentPixels, 0);
       assert.equal(payload.data.totalPixels, 100);
       assert.equal(payload.data.mismatchPercentage, 0);
@@ -382,10 +385,7 @@ describe('cli diff commands', () => {
       assert.match(result.stdout, /Diff image:/);
       assert.match(result.stdout, /Current overlay:/);
       assert.match(result.stdout, /diff\.current-overlay\.png \(1 refs\)/);
-      assert.match(
-        result.stdout,
-        /size=large shape=large-area density=100% avgColor=#000000->#ffffff luminance=0->255/,
-      );
+      assert.match(result.stdout, /1\. x=0 y=0 10x10, 100% of diff/);
       assert.match(result.stdout, /overlaps @e1 "Continue", 12% of region/);
     } finally {
       fs.rmSync(dir, { recursive: true, force: true });

src/screenshot-diff/__tests__/screenshot-diff.test.ts

@@ -74,6 +74,10 @@ test('identical images produce match: true with 0% mismatch', async () => {
   assert.equal(result.differentPixels, 0);
   assert.equal(result.mismatchPercentage, 0);
   assert.equal(result.totalPixels, 100);
+  assert.equal(result.ocr, undefined);
+  assert.equal(result.nonTextDeltas, undefined);
+  assert.equal(Object.hasOwn(result, 'ocr'), false);
+  assert.equal(Object.hasOwn(result, 'nonTextDeltas'), false);
   assert.equal(result.dimensionMismatch, undefined);
   assert.equal(result.diffPath, undefined, 'diffPath should not be set when images match');
   // No diff image should be written when images match
@@ -310,8 +314,6 @@ test('dimension mismatch returns expected vs actual sizes', async () => {
   assert.equal(result.mismatchPercentage, 100);
   assert.equal(result.diffPath, undefined, 'diffPath should not be set for dimension mismatch');
   assert.equal(result.regions, undefined);
-  assert.equal(result.ocr, undefined);
-  assert.equal(result.nonTextDeltas, undefined);
   assert.deepEqual(result.dimensionMismatch, {
     expected: { width: 10, height: 20 },
     actual: { width: 15, height: 25 },