Update manifest.json generated timestamp and add deprecation notice for slot naming convention

.opencode/rules/linkml/class-file-name-sync-rule.md

@@ -0,0 +1,54 @@
+# Rule: Class File Name Must Match Class Label/Name
+
+## 🚨 Critical
+
+When a class label/name is changed, the class file name must be renamed to match.
+
+This keeps class modules discoverable, prevents stale imports, and avoids long-term naming drift.
+
+## The Rule
+
+1. If the primary class identifier changes, rename the file in the same edit set.
+   - Change triggers include updates to:
+     - top-level `name:`
+     - class key under `classes:`
+     - canonical class label used for module naming
+
+2. File naming must reflect the canonical class name.
+   - ✅ `DigitalPlatformProfile.yaml` for class `DigitalPlatformProfile`
+   - ❌ `DigitalPlatformV2.yaml` for class `DigitalPlatformProfile`
+
+3. After renaming a file, update all references.
+   - `imports:` in other class/slot/type files
+   - manifests/indexes/build inputs
+   - any generated or curated mapping lists that include file paths
+
+4. Keep semantic names versionless.
+   - Do not preserve old versioned file names when class names are de-versioned.
+   - Coordinate with `no-version-indicators-in-names-rule.md`.
+
+## Required Checklist
+
+- [ ] File name matches canonical class name
+- [ ] `id:` and `name:` are internally consistent
+- [ ] All import paths updated
+- [ ] Search confirms no stale old file-name references remain
+- [ ] YAML parses after rename
+
+## Example
+
+Before:
+```yaml
+# file: DigitalPlatformV2.yaml
+name: DigitalPlatformProfile
+classes:
+  DigitalPlatformProfile:
+```
+
+After:
+```yaml
+# file: DigitalPlatformProfile.yaml
+name: DigitalPlatformProfile
+classes:
+  DigitalPlatformProfile:
+```

frontend/public/schemas/20251121/linkml/manifest.json

@@ -1,5 +1,5 @@
 {
-  "generated": "2026-02-15T14:49:36.432Z",
+  "generated": "2026-02-15T14:54:26.856Z",
   "schemaRoot": "/schemas/20251121/linkml",
   "totalFiles": 2369,
   "categoryCounts": {