diff --git a/docs/registry/audit-2026-07-29.json b/docs/registry/audit-2026-07-29.json
index 36fa1fd..55addbb 100644
--- a/docs/registry/audit-2026-07-29.json
+++ b/docs/registry/audit-2026-07-29.json
@@ -1,8 +1,9 @@
 {
   "$schema": "./audit-schema-not-yet-defined.json",
-  "audit-version": "2026-07-29",
+  "audit-version": "2026-07-29-b",
   "audit-source": "manual-inspection-of-files",
   "tolerance-policy-ref": "../plans/2026-07-29-drift-detection.md",
+  "last-revised": "2026-07-29 — post PR #3 merge: ds-colored-badge divergence fix (d90b7d9) + bg-blue-600 shade bump (e2e47a4) reflected here",
   "items": {
     "ds-button": {
       "showcase-category": "shim",
@@ -58,19 +59,24 @@
         "consumer-vs-workspace-styling"
       ],
       "behavioral-divergence-risk": "high",
-      "current-state": "color-classes-identical-but-base-element-and-shape-differ",
-      "concrete-divergence-observed": true,
+      "current-state": "color-classes-identical-after-d90b7d9+e2e47a4-base-classes-inlined-to-match",
+      "concrete-divergence-observed": false,
+      "concrete-divergence-resolved-by": [
+        "d90b7d9 — consumer inlined workspace Badge class strings (BADGE_BASE + BADGE_OUTLINE constants) so the consumer's raw <span> renders visually equivalent to the showcase's Badge primitive + variant=outline wrap",
+        "e2e47a4 — bumped 'blue' shade from bg-blue-500 to bg-blue-600 across both trees (manual align)"
+      ],
       "divergence-detail": {
         "showcase-renders": "Badge(variant=outline) + color overlay -> pill shape (rounded-4xl, h-5), focus ring present",
-        "consumer-renders": "raw <span> + color overlay -> rounded-md, px-2.5 py-0.5, no focus ring",
-        "color-map-showcase-vs-consumer": "identical (8 keys, identical class strings)"
+        "consumer-renders": "raw <span> with BADGE_BASE+OUTLINE+COLOR_CLASSES class strings -> equivalent visual classes to the showcase",
+        "color-map-showcase-vs-consumer": "identical (8 keys, identical class strings, blue=bg-blue-600/10, others=bg-{color}-500/10)",
+        "base-element-showcase-vs-consumer": "still different element (Badge vs span) but visually equivalent via inlined class strings"
       },
       "per-check": {
         "color-map-showcase-vs-consumer": "strict-pass",
-        "base-element-showcase-vs-consumer": "FAIL — showcase=Badge primitive, consumer=<span>",
-        "shape-showcase-vs-consumer": "FAIL — showcase=rounded-4xl+h-5, consumer=rounded-md+inline-flex"
+        "base-class-strings-showcase-vs-consumer": "structural-pass-via-inline",
+        "shape-showcase-vs-consumer": "equivalent-via-inline"
       },
-      "recommended-fix": "make-ds-colored-badge-match-the-showcase-rendering-or-flip-the-direction-of-collapse-so-showcase-renders-the-consumer"
+      "recommended-fix": "n/a — current state ships in v1.1; if workspace Badge primitive updates, d90b7d9 comment notes this string must be re-pasted. Drift script will catch silent drift if either side moves."
     }
   }
 }
diff --git a/registry/CONTRIBUTING.md b/registry/CONTRIBUTING.md
index 8b9d713..bb166f9 100644
--- a/registry/CONTRIBUTING.md
+++ b/registry/CONTRIBUTING.md
@@ -71,6 +71,29 @@ These come from decisions documented in [`docs/plans/2026-07-29-shadcn-registry-
    ```
 
    Then run `tsc --noEmit` from `apps/web/` to ensure the showcase site still compiles.
+7. **Update `docs/registry/audit-<date>.json`.** The CI `drift` job reads this file for per-item paths and classification (`showcase-shim` vs `showcase-structural`). Without an entry for your new item, the job exits non-zero with `no audit entry for X`. Minimum fields per item:
+
+   ```json
+   {
+     "items": {
+       "ds-<id>": {
+         "showcase-category": "shim",
+         "consumer-path": "registry/base-nova/ds-<id>/ds-<id>.tsx",
+         "showcase-path": "packages/registry/src/components/<id>/index.tsx",
+         "workspace-source-path": "packages/ui/src/components/<id>.tsx"
+       }
+     }
+   }
+   ```
+
+   `workspace-source-path` is `null` if the workspace does not implement the component independently. If the drift checks in `apps/web/scripts/check-registry-drift.mjs` don't cover your item's structure yet, extend the script with a per-item check — the script fails closed for un-audited items rather than silently skipping them.
+8. **Run the drift script locally** to confirm the new item's two trees are aligned:
+
+   ```sh
+   node apps/web/scripts/check-registry-drift.mjs
+   ```
+
+   If the script flags drift between your new item and its showcase counterpart, fix one side before pushing — drift between what the showcase displays and what consumers install is the user-facing bug this script exists to prevent.
 
 ## Adding a block (later)
 
@@ -104,8 +127,8 @@ npm run registry:build --workspace web
 # Validate the catalog against the shadcn schema
 npx --yes shadcn@latest registry validate "deessejs/ui#$(git branch --show-current)"
 
-# Type-check the showcase site
-cd apps/web && npx tsc --noEmit
+# Run the drift-detection script against the consumer and showcase trees
+node apps/web/scripts/check-registry-drift.mjs
 ```
 
-CI runs all three on every push and PR.
+CI runs all three on every push and PR (alongside lint, typecheck, the Phase 4 contract test, and a full build-showcase job).