improved component composition and added tests.

src/lib/router.test.ts

@@ -0,0 +1,13 @@
+import { describe, expect, it } from 'vitest'
+import { parseHash } from './router.svelte'
+
+describe('parseHash', () => {
+  it('decodes valid route parameters', () => {
+    expect(parseHash('#/@alice%40remote.test').params.acct).toBe('alice@remote.test')
+  })
+
+  it('treats malformed percent escapes as not found', () => {
+    expect(() => parseHash('#/@broken%ZZ')).not.toThrow()
+    expect(parseHash('#/@broken%ZZ').name).toBe('notfound')
+  })
+})