feat: major architectural refactor

- Refactor memory system (episodic/STM/LTM with components)
- Implement complete subtitle domain (scanner, matcher, placer)
- Add YAML workflow infrastructure
- Externalize knowledge base (patterns, release groups)
- Add comprehensive testing suite
- Create manual testing CLIs

tests/test_memory.py

@@ -13,7 +13,7 @@ from alfred.infrastructure.persistence import (
     has_memory,
     init_memory,
 )
-from alfred.infrastructure.persistence.context import _memory_ctx
+from alfred.infrastructure.persistence.context import reset_memory
 
 
 def is_iso_format(s: str) -> bool:
@@ -33,10 +33,8 @@ class TestLongTermMemory:
 
     def test_default_values(self):
         ltm = LongTermMemory()
-        assert ltm.config == {}
-        assert ltm.preferences["preferred_quality"] == "1080p"
-        assert "en" in ltm.preferences["preferred_languages"]
-        assert ltm.library == {"movies": [], "tv_shows": []}
+        assert ltm.media_preferences.quality == "1080p"
+        assert "en" in ltm.media_preferences.audio_languages
         assert ltm.following == []
 
     def test_set_and_get_config(self):
@@ -124,7 +122,7 @@ class TestLongTermMemory:
         }
         ltm = LongTermMemory.from_dict(data)
         assert ltm.get_config("download_folder") == "/downloads"
-        assert ltm.preferences["preferred_quality"] == "4K"
+        assert ltm.media_preferences.quality == "4K"
         assert len(ltm.library["movies"]) == 1
 
 
@@ -230,12 +228,12 @@ class TestMemoryContext:
     """Tests for memory context functions."""
 
     def test_get_memory_not_initialized(self):
-        _memory_ctx.set(None)
+        reset_memory()
         with pytest.raises(RuntimeError, match="Memory not initialized"):
             get_memory()
 
     def test_init_memory(self, temp_dir):
-        _memory_ctx.set(None)
+        reset_memory()
         memory = init_memory(str(temp_dir))
         assert has_memory()
         assert get_memory() is memory