feat: bootstrap temporserv project scaffold

Add the initial project blueprint, Go backend skeleton, frontend app shell, database schema draft, and local development/deployment files.

internal/library/service.go

@@ -0,0 +1,56 @@
+package library
+
+type Artist struct {
+	ID         string `json:"id"`
+	Name       string `json:"name"`
+	AlbumCount int    `json:"albumCount"`
+}
+
+type Album struct {
+	ID         string `json:"id"`
+	ArtistID   string `json:"artistId"`
+	ArtistName string `json:"artistName"`
+	Title      string `json:"title"`
+	Year       int    `json:"year"`
+	TrackCount int    `json:"trackCount"`
+}
+
+type Track struct {
+	ID           string `json:"id"`
+	AlbumID      string `json:"albumId"`
+	ArtistID     string `json:"artistId"`
+	Title        string `json:"title"`
+	ArtistName   string `json:"artistName"`
+	AlbumTitle   string `json:"albumTitle"`
+	TrackNumber  int    `json:"trackNumber"`
+	DurationSecs int    `json:"durationSeconds"`
+}
+
+type HomePayload struct {
+	RecentAlbums []Album  `json:"recentAlbums"`
+	Artists      []Artist `json:"artists"`
+}
+
+func DemoHome() HomePayload {
+	return HomePayload{
+		RecentAlbums: []Album{
+			{ID: "album-1", ArtistID: "artist-1", ArtistName: "Tycho", Title: "Awake", Year: 2014, TrackCount: 8},
+			{ID: "album-2", ArtistID: "artist-2", ArtistName: "Bonobo", Title: "Migration", Year: 2017, TrackCount: 11},
+			{ID: "album-3", ArtistID: "artist-3", ArtistName: "Boards of Canada", Title: "Tomorrow's Harvest", Year: 2013, TrackCount: 17},
+		},
+		Artists: []Artist{
+			{ID: "artist-1", Name: "Tycho", AlbumCount: 4},
+			{ID: "artist-2", Name: "Bonobo", AlbumCount: 6},
+			{ID: "artist-3", Name: "Boards of Canada", AlbumCount: 7},
+		},
+	}
+}
+
+func DemoTracks() []Track {
+	return []Track{
+		{ID: "track-1", AlbumID: "album-1", ArtistID: "artist-1", Title: "Awake", ArtistName: "Tycho", AlbumTitle: "Awake", TrackNumber: 1, DurationSecs: 224},
+		{ID: "track-2", AlbumID: "album-2", ArtistID: "artist-2", Title: "Migration", ArtistName: "Bonobo", AlbumTitle: "Migration", TrackNumber: 1, DurationSecs: 301},
+		{ID: "track-3", AlbumID: "album-3", ArtistID: "artist-3", Title: "Reach for the Dead", ArtistName: "Boards of Canada", AlbumTitle: "Tomorrow's Harvest", TrackNumber: 1, DurationSecs: 292},
+	}
+}
+