feat(config): add deepseek-v4-flash:0731 model for ollama-cloud (#221)

Co-authored-by: opencode-agent <agent@opencode.local>

.opencode/opencode.json

@@ -109,6 +109,53 @@
             }
           }
         }
+      },
+      "ollama-cloud": {
+        "models": {
+          "deepseek-v4-flash:0731": {
+            "name": "DS4F-0731",
+            "reasoning": true,
+            "modalities": {
+              "input": [
+                "text"
+              ],
+              "output": [
+                "text"
+              ]
+            },
+            "limit": {
+              "context": 200000,
+              "input": 200000,
+              "output": 65536
+            },
+            "options": {
+              "reasoningEffort": "max"
+            },
+            "variants": {
+              "max": {
+                "reasoningEffort": "max"
+              },
+              "none": {
+                "disabled": true
+              },
+              "minimal": {
+                "disabled": true
+              },
+              "low": {
+                "disabled": true
+              },
+              "medium": {
+                "disabled": true
+              },
+              "high": {
+                "disabled": true
+              },
+              "xhigh": {
+                "disabled": true
+              }
+            }
+          }
+        }
       }
     },
     "permission": {