feat(site/src/pages/TemplateBuilder): prioritize template builder module display order (#26835)

Adds a curated priority ordering for modules in the template builder
module picker. Modules in the priority list appear first in the
specified order; unlisted modules appear after in their original order.

## Changes

- Added `MODULE_PRIORITY` constant in `ModuleSelectStep.tsx` with the
preferred display order
- Added `sortByPriority()` helper to sort modules against the priority
list
- Not-yet-imported module IDs (`codex`, `antigravity`, `kasmvnc`) are
included but commented out
- Both the module grid and category tabs respect the new ordering
- Search results still use fuzzy relevance ordering

> Generated by Coder Agents on behalf of @jeremyruppel

site/src/pages/TemplateBuilder/ModuleSelectStep.tsx

@@ -70,6 +70,40 @@ const ConflictWarning: FC<ModuleConflict> = ({ moduleA, moduleB }) => {
 	);
 };
 
+// Preferred display order for modules. Modules in this list appear first,
+// in this order. Unlisted modules appear after, in their original order.
+const MODULE_PRIORITY: readonly string[] = [
+	"claude-code",
+	// "codex",
+	"cursor",
+	"vscode-desktop",
+	"code-server",
+	"jetbrains",
+	"vscode-web",
+	"zed",
+	// "antigravity",
+	"windsurf",
+	"git-clone",
+	"dotfiles",
+	"git-config",
+	"personalize",
+	"filebrowser",
+	// "kasmvnc",
+];
+
+function sortByPriority<T extends { id: string }>(
+	items: readonly T[],
+	priority: readonly string[],
+): T[] {
+	const indexMap = new Map(priority.map((id, i) => [id, i]));
+	const fallback = priority.length;
+	return [...items].sort((a, b) => {
+		const ai = indexMap.get(a.id) ?? fallback;
+		const bi = indexMap.get(b.id) ?? fallback;
+		return ai - bi;
+	});
+}
+
 export const ModuleSelectStep: FC<ModuleSelectStepProps> = ({
 	baseId,
 	selectedModuleIds,
@@ -78,14 +112,15 @@ export const ModuleSelectStep: FC<ModuleSelectStepProps> = ({
 	const { data, error, isLoading } = useQuery(templateBuilderModules(baseId));
 	const [moduleSearchText, setModuleSearchText] = useState("");
 	const modules = data?.modules ?? [];
+	const sortedModules = sortByPriority(modules, MODULE_PRIORITY);
 	const categories = [
-		...new Set(modules.map((module) => module.category)),
+		...new Set(sortedModules.map((module) => module.category)),
 	].sort((a, b) => a.localeCompare(b));
 
 	const [selectedFilterTab, setSelectedFilterTab] = useState("All");
 
 	const searchedModules = useFuzzySearch({
-		allItems: modules,
+		allItems: sortedModules,
 		searchText: moduleSearchText,
 		searchProperties: ["display_name", "description"],
 	});