refactor: update project data type

- add order property to set explicit ordering on projects page
- make project link optional as not all projects have an accessible link

src/content.config.ts

@@ -23,7 +23,8 @@ const projects = defineCollection({
       description: z.string(),
       tags: z.array(z.string()),
       image: image(),
-      link: z.string().url(),
+      link: z.string().url().optional(),
+      order: z.number().optional(),
       startDate: z.coerce.date().optional(),
       endDate: z.coerce.date().optional(),
     }),

src/lib/data-utils.ts

@@ -105,17 +105,12 @@ export async function getPostsByTag(
 
 export async function getAllProjects(): Promise<CollectionEntry<'projects'>[]> {
   const projects = await getCollection('projects')
-  return projects
+  return projects.sort((a, b) => (a.data.order ?? Infinity) - (b.data.order ?? Infinity))
-    .sort((a, b) => (b.data.startDate?.valueOf() ?? 0) - (a.data.startDate?.valueOf() ?? 0))
 }
 
-const FEATURED_PROJECT_IDS = ['homelab', 'chitai', 'cue', 'portfolio']
-
 export async function getFeaturedProjects(): Promise<CollectionEntry<'projects'>[]> {
   const projects = await getAllProjects()
-  return FEATURED_PROJECT_IDS
+  return projects.slice(0, 4)
-    .map(id => projects.find(p => p.id === id))
-    .filter((p): p is CollectionEntry<'projects'> => p !== undefined)
 }
 
 export async function getProjectsFeaturedTags(maxCount: number): Promise<string[]> {