docs: new algorithm migration guides + memory evaluation (#4811)

Co-authored-by: kartik-mem0 <kartik.labhshetwar@mem0.ai>
Co-authored-by: Saket Aryan <saketaryan2002@gmail.com>

docs/integrations/openclaw.mdx

@@ -147,7 +147,6 @@ openclaw mem0 stats
 | `apiKey` | `string` | — | **Required.** Mem0 API key (supports `${MEM0_API_KEY}`) |
 | `orgId` | `string` | — | Organization ID |
 | `projectId` | `string` | — | Project ID |
-| `enableGraph` | `boolean` | `false` | Entity graph for relationships |
 | `customInstructions` | `string` | *(built-in)* | Extraction rules — what to store, how to format |
 | `customCategories` | `object` | *(12 defaults)* | Category name → description map for tagging |