test: create unresolved folder test fixtures

Add test anime folders for unresolved folder API tests.
Update test data from 'SomeFolder' to 'Unknown Anime (2020)'.
Remove stale Task 16 notes from Docs/tasks.md.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

tests/robot/start_server.sh

@@ -5,6 +5,10 @@ cd /home/lukas/Volume/repo/Aniworld
 rm -f /tmp/aniworld_test.db
 rm -rf /tmp/aniworld_test_anime
 mkdir -p /tmp/aniworld_test_anime
+# Create test anime folders that will be tracked as unresolved
+mkdir -p "/tmp/aniworld_test_anime/Attack on Titan (2013)"
+mkdir -p "/tmp/aniworld_test_anime/Unknown Anime (2020)"
+mkdir -p "/tmp/aniworld_test_anime/Test Series (2024)"
 # Remove existing config so the app starts in an unconfigured state
 rm -f data/config.json
 export DATABASE_URL="sqlite:////tmp/aniworld_test.db"