feat: bot and you entity schemas with projector handlers

tests/test_entities.py

@@ -0,0 +1,38 @@
+from chat.db.migrate import apply_migrations
+from chat.db.connection import open_db
+from chat.eventlog.log import append_event
+from chat.eventlog.projector import project
+from chat.state.entities import get_bot, list_bots, get_you
+import chat.state.entities  # registers handlers
+
+
+def test_bot_authored_creates_bot_row(tmp_path):
+    db = tmp_path / "t.db"
+    apply_migrations(db)
+    with open_db(db) as conn:
+        append_event(conn, kind="bot_authored", payload={
+            "id": "bot_a", "name": "BotA",
+            "persona": "...", "voice_samples": ["sample"], "traits": ["shy"],
+            "backstory": "...",
+            "initial_relationship_to_you": "coworker",
+            "kickoff_prose": "you stay late",
+        })
+        project(conn)
+        bot = get_bot(conn, "bot_a")
+        assert bot is not None
+        assert bot["name"] == "BotA"
+        assert bot["traits"] == ["shy"]
+        assert "bot_a" in [b["id"] for b in list_bots(conn)]
+
+
+def test_you_authored_creates_you_singleton(tmp_path):
+    db = tmp_path / "t.db"
+    apply_migrations(db)
+    with open_db(db) as conn:
+        append_event(conn, kind="you_authored", payload={
+            "name": "Me", "pronouns": "they/them", "persona": "engineer",
+        })
+        project(conn)
+        you = get_you(conn)
+        assert you is not None
+        assert you["name"] == "Me"