ax(brain): normalise remember response keys

Co-Authored-By: Virgil <virgil@lethean.io>

pkg/agentic/commands_test.go

@@ -289,7 +289,7 @@ func TestCommands_CmdBrainRemember_Good(t *testing.T) {
 		assert.Equal(t, 24, options.Int("expires_in"))
 		return core.Result{Value: map[string]any{
 			"success":   true,
-			"memoryId":  "mem-1",
+			"memory_id": "mem-1",
 			"timestamp": "2026-03-31T12:00:00Z",
 		}, OK: true}
 	})

pkg/brain/provider.go

@@ -103,7 +103,7 @@ func (p *BrainProvider) Describe() []api.RouteDescription {
 				"type": "object",
 				"properties": map[string]any{
 					"success":   map[string]any{"type": "boolean"},
-					"memoryId":  map[string]any{"type": "string"},
+					"memory_id": map[string]any{"type": "string"},
 					"timestamp": map[string]any{"type": "string", "format": "date-time"},
 				},
 			},

pkg/brain/tools.go

@@ -31,7 +31,7 @@ type RememberInput struct {
 //	}
 type RememberOutput struct {
 	Success   bool      `json:"success"`
-	MemoryID  string    `json:"memoryId,omitempty"`
+	MemoryID  string    `json:"memory_id,omitempty"`
 	Timestamp time.Time `json:"timestamp"`
 }