style: gofmt struct-tag alignment across v0 files

v0 landed with a few misaligned struct tags and fields; gofmt -l
flagged categories.go, topics.go, discourse_test.go and the smoke
fake. Alignment only, no behavior change, so the tree passes the
gofmt gate cleanly.

categories.go

@@ -28,13 +28,13 @@ type Category struct {
 // means "default: everyone full" — for restricted categories set it
 // explicitly, e.g. {"staff": 3, "trust_level_0": 1}.
 type CreateCategoryRequest struct {
-	Name              string         `json:"name"`
+	Name             string         `json:"name"`
-	Color             string         `json:"color"`      // 6 hex digits, no '#'
+	Color            string         `json:"color"`      // 6 hex digits, no '#'
-	TextColor         string         `json:"text_color"` // 6 hex digits, no '#'
+	TextColor        string         `json:"text_color"` // 6 hex digits, no '#'
-	Permissions       map[string]int `json:"permissions,omitempty"`
+	Permissions      map[string]int `json:"permissions,omitempty"`
-	Position          int            `json:"position,omitempty"`
+	Position         int            `json:"position,omitempty"`
-	ParentCategoryID  int            `json:"parent_category_id,omitempty"`
+	ParentCategoryID int            `json:"parent_category_id,omitempty"`
-	Description       string         `json:"description,omitempty"`
+	Description      string         `json:"description,omitempty"`
 }
 
 // ListCategories returns the instance's categories (one request; the

discourse_test.go

@@ -82,15 +82,15 @@ func newFake(t *testing.T) *fakeDiscourse {
 			}
 			if req.Name == "denied" { // simulate a non-admin key
 				writeJSON(w, 403, map[string]any{
-					"errors":              []string{"You are not permitted to view the requested resource."},
+					"errors":            []string{"You are not permitted to view the requested resource."},
-					"error_description":   "Access denied",
+					"error_description": "Access denied",
 				})
 				return
 			}
 			f.mu.Lock()
 			cat := Category{
 				ID: f.nextCat, Name: req.Name,
-				Slug: strings.ToLower(strings.ReplaceAll(req.Name, " ", "-")),
+				Slug:  strings.ToLower(strings.ReplaceAll(req.Name, " ", "-")),
 				Color: req.Color, TextColor: req.TextColor, Position: req.Position,
 			}
 			f.nextCat++
@@ -158,7 +158,7 @@ func newFake(t *testing.T) *fakeDiscourse {
 		case http.MethodPut:
 			var body struct {
 				Post struct {
-					Raw       string `json:"raw"`
+					Raw        string `json:"raw"`
 					EditReason string `json:"edit_reason"`
 				} `json:"post"`
 			}

smoke/fakediscourse/main.go

@@ -69,7 +69,7 @@ func main() {
 			name, _ := req["name"].(string)
 			cat := map[string]any{
 				"id": s.nextCat, "name": name,
-				"slug": strings.ToLower(strings.ReplaceAll(name, " ", "-")),
+				"slug":  strings.ToLower(strings.ReplaceAll(name, " ", "-")),
 				"color": orDefault(req["color"], "3AB54A"), "text_color": orDefault(req["text_color"], "FFFFFF"),
 				"topic_count": 0,
 			}

topics.go

@@ -31,7 +31,7 @@ type Topic struct {
 	CategoryID int    `json:"category_id"`
 	CreatedAt  string `json:"created_at"`
 	Closed     bool   `json:"closed"`
-	Archived  bool   `json:"archived"`
+	Archived   bool   `json:"archived"`
 	PostStream struct {
 		Posts []Post `json:"posts"`
 	} `json:"post_stream"`