Strip comments from backend and frontend source

Remove Go doc comments, TS/Svelte scaffold comments and explanatory
notes left over from the initial scaffold, plus a few leftover Spanish
notes in the compose file, SQL scripts and env template. Also drops
frontend/src/lib/index.ts, which only held the SvelteKit placeholder
comment and was never imported.

frontend/vite.config.ts

@@ -8,14 +8,9 @@ export default defineConfig({
 		tailwindcss(),
 		sveltekit({
 			compilerOptions: {
-				// Force runes mode for the project, except for libraries. Can be removed in svelte 6.
 				runes: ({ filename }) =>
 					filename.split(/[/\\]/).includes('node_modules') ? undefined : true
 			},
-
-			// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
-			// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
-			// See https://svelte.dev/docs/kit/adapters for more information about adapters.
 			adapter: adapter()
 		})
 	]