test: expand coverage to 92% with production-realistic fixtures

Add conftest.py with shared fixtures, new test_qdrant_service.py covering
all QdrantService methods, and expand curator/proxy/integration/utils tests
to cover debug_log, forward_to_ollama, curator.run(), load_system_prompt,
and health check edge cases.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/conftest.py

@@ -0,0 +1,62 @@
+"""Shared test fixtures using production-realistic data."""
+import pytest
+from unittest.mock import AsyncMock, MagicMock, patch
+from app.config import Config
+
+
+@pytest.fixture
+def production_config():
+    """Config matching production deployment on deb8."""
+    config = MagicMock(spec=Config)
+    config.ollama_host = "http://10.0.0.10:11434"
+    config.qdrant_host = "http://10.0.0.22:6333"
+    config.qdrant_collection = "memories"
+    config.embedding_model = "snowflake-arctic-embed2"
+    config.semantic_token_budget = 25000
+    config.context_token_budget = 22000
+    config.semantic_search_turns = 2
+    config.semantic_score_threshold = 0.6
+    config.run_time = "02:00"
+    config.curator_model = "gpt-oss:120b"
+    config.debug = False
+    config.vector_size = 1024
+    config.cloud = MagicMock()
+    config.cloud.enabled = False
+    config.cloud.models = {}
+    config.cloud.get_cloud_model.return_value = None
+    return config
+
+
+@pytest.fixture
+def sample_qdrant_raw_payload():
+    """Sample raw payload from production Qdrant."""
+    return {
+        "type": "raw",
+        "text": "User: only change settings, not models\nAssistant: Changed semantic_token_budget from 25000 to 30000\nTimestamp: 2026-03-27T12:50:37.451593Z",
+        "timestamp": "2026-03-27T12:50:37.451593Z",
+        "role": "qa",
+        "content": "User: only change settings, not models\nAssistant: Changed semantic_token_budget from 25000 to 30000\nTimestamp: 2026-03-27T12:50:37.451593Z"
+    }
+
+
+@pytest.fixture
+def sample_ollama_models():
+    """Model list from production Ollama."""
+    return {
+        "models": [
+            {
+                "name": "snowflake-arctic-embed2:latest",
+                "model": "snowflake-arctic-embed2:latest",
+                "modified_at": "2026-02-16T16:43:44Z",
+                "size": 1160296718,
+                "details": {"family": "bert", "parameter_size": "566.70M", "quantization_level": "F16"}
+            },
+            {
+                "name": "gpt-oss:120b",
+                "model": "gpt-oss:120b",
+                "modified_at": "2026-03-11T12:45:48Z",
+                "size": 65369818941,
+                "details": {"family": "gptoss", "parameter_size": "116.8B", "quantization_level": "MXFP4"}
+            }
+        ]
+    }

tests/test_curator.py

@@ -4,7 +4,7 @@ import json
 import os
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
-from unittest.mock import MagicMock, patch
+from unittest.mock import MagicMock, AsyncMock, patch
 
 
 def make_curator():
@@ -197,3 +197,294 @@ class TestAppendRuleToFile:
         target = prompts_dir / "newfile.md"
         assert target.exists()
         assert "New rule here." in target.read_text()
+
+
+class TestFormatExistingMemories:
+    """Tests for Curator._format_existing_memories."""
+
+    def test_empty_list_returns_no_memories_message(self):
+        """Empty list returns a 'no memories' message."""
+        curator, _ = make_curator()
+        result = curator._format_existing_memories([])
+        assert "No existing curated memories" in result
+
+    def test_single_memory_formatted(self):
+        """Single memory text is included in output."""
+        curator, _ = make_curator()
+        memories = [{"text": "User: hello\nAssistant: hi there"}]
+        result = curator._format_existing_memories(memories)
+        assert "hello" in result
+        assert "hi there" in result
+
+    def test_limits_to_last_20(self):
+        """Only last 20 memories are included."""
+        curator, _ = make_curator()
+        memories = [{"text": f"memory {i}"} for i in range(30)]
+        result = curator._format_existing_memories(memories)
+        # Should contain memory 10-29 (last 20), not memory 0-9
+        assert "memory 29" in result
+        assert "memory 10" in result
+
+
+class TestCallLlm:
+    """Tests for Curator._call_llm."""
+
+    @pytest.mark.asyncio
+    async def test_call_llm_returns_response(self):
+        """_call_llm returns the response text from Ollama."""
+        curator, _ = make_curator()
+
+        mock_resp = MagicMock()
+        mock_resp.json.return_value = {"response": "some LLM output"}
+
+        mock_client = AsyncMock()
+        mock_client.__aenter__ = AsyncMock(return_value=mock_client)
+        mock_client.__aexit__ = AsyncMock(return_value=False)
+        mock_client.post = AsyncMock(return_value=mock_resp)
+
+        with patch("httpx.AsyncClient", return_value=mock_client):
+            result = await curator._call_llm("test prompt")
+
+        assert result == "some LLM output"
+        call_kwargs = mock_client.post.call_args
+        assert "test-model" in call_kwargs[1]["json"]["model"]
+
+    @pytest.mark.asyncio
+    async def test_call_llm_returns_empty_on_error(self):
+        """_call_llm returns empty string when Ollama errors."""
+        curator, _ = make_curator()
+
+        mock_client = AsyncMock()
+        mock_client.__aenter__ = AsyncMock(return_value=mock_client)
+        mock_client.__aexit__ = AsyncMock(return_value=False)
+        mock_client.post = AsyncMock(side_effect=Exception("connection refused"))
+
+        with patch("httpx.AsyncClient", return_value=mock_client):
+            result = await curator._call_llm("test prompt")
+
+        assert result == ""
+
+
+class TestCuratorRun:
+    """Tests for Curator.run() method."""
+
+    @pytest.mark.asyncio
+    async def test_run_no_raw_memories_exits_early(self):
+        """run() exits early when no raw memories found."""
+        curator, mock_qdrant = make_curator()
+
+        # Mock scroll to return no points
+        mock_qdrant.client = AsyncMock()
+        mock_qdrant.client.scroll = AsyncMock(return_value=([], None))
+        mock_qdrant.collection = "memories"
+
+        await curator.run()
+        # Should not call LLM since there are no raw memories
+        # If it got here without error, that's success
+
+    @pytest.mark.asyncio
+    async def test_run_processes_raw_memories(self):
+        """run() processes raw memories and stores curated results."""
+        curator, mock_qdrant = make_curator()
+
+        # Create mock points
+        mock_point = MagicMock()
+        mock_point.id = "point-1"
+        mock_point.payload = {
+            "type": "raw",
+            "text": "User: hello\nAssistant: hi",
+            "timestamp": datetime.now(timezone.utc).isoformat().replace("+00:00", "Z"),
+        }
+
+        mock_qdrant.client = AsyncMock()
+        mock_qdrant.client.scroll = AsyncMock(return_value=([mock_point], None))
+        mock_qdrant.collection = "memories"
+        mock_qdrant.store_turn = AsyncMock(return_value="new-id")
+        mock_qdrant.delete_points = AsyncMock()
+
+        llm_response = json.dumps({
+            "new_curated_turns": [{"content": "User: hello\nAssistant: hi"}],
+            "permanent_rules": [],
+            "deletions": [],
+            "summary": "Curated one turn"
+        })
+
+        with patch.object(curator, "_call_llm", AsyncMock(return_value=llm_response)):
+            await curator.run()
+
+        mock_qdrant.store_turn.assert_called_once()
+        mock_qdrant.delete_points.assert_called()
+
+    @pytest.mark.asyncio
+    async def test_run_monthly_mode_on_day_01(self):
+        """run() uses monthly mode on day 01, processing all raw memories."""
+        curator, mock_qdrant = make_curator()
+
+        # Create a mock point with an old timestamp (outside 24h window)
+        old_ts = (datetime.now(timezone.utc) - timedelta(hours=72)).isoformat().replace("+00:00", "Z")
+        mock_point = MagicMock()
+        mock_point.id = "old-point"
+        mock_point.payload = {
+            "type": "raw",
+            "text": "User: old question\nAssistant: old answer",
+            "timestamp": old_ts,
+        }
+
+        mock_qdrant.client = AsyncMock()
+        mock_qdrant.client.scroll = AsyncMock(return_value=([mock_point], None))
+        mock_qdrant.collection = "memories"
+        mock_qdrant.store_turn = AsyncMock(return_value="new-id")
+        mock_qdrant.delete_points = AsyncMock()
+
+        llm_response = json.dumps({
+            "new_curated_turns": [],
+            "permanent_rules": [],
+            "deletions": [],
+            "summary": "Nothing to curate"
+        })
+
+        # Mock day 01
+        mock_now = datetime(2026, 4, 1, 2, 0, 0, tzinfo=timezone.utc)
+        with patch.object(curator, "_call_llm", AsyncMock(return_value=llm_response)), \
+             patch("app.curator.datetime") as mock_dt:
+            mock_dt.now.return_value = mock_now
+            mock_dt.fromisoformat = datetime.fromisoformat
+            mock_dt.side_effect = lambda *args, **kw: datetime(*args, **kw)
+            await curator.run()
+
+        # In monthly mode, even old memories are processed, so LLM should be called
+        # and delete_points should be called for the raw memory
+        mock_qdrant.delete_points.assert_called()
+
+    @pytest.mark.asyncio
+    async def test_run_handles_permanent_rules(self):
+        """run() appends permanent rules to prompt files."""
+        curator, mock_qdrant = make_curator()
+
+        mock_point = MagicMock()
+        mock_point.id = "point-1"
+        mock_point.payload = {
+            "type": "raw",
+            "text": "User: remember this\nAssistant: ok",
+            "timestamp": datetime.now(timezone.utc).isoformat().replace("+00:00", "Z"),
+        }
+
+        mock_qdrant.client = AsyncMock()
+        mock_qdrant.client.scroll = AsyncMock(return_value=([mock_point], None))
+        mock_qdrant.collection = "memories"
+        mock_qdrant.store_turn = AsyncMock(return_value="new-id")
+        mock_qdrant.delete_points = AsyncMock()
+
+        llm_response = json.dumps({
+            "new_curated_turns": [],
+            "permanent_rules": [{"rule": "Always be concise.", "target_file": "systemprompt.md"}],
+            "deletions": [],
+            "summary": "Added a rule"
+        })
+
+        with patch.object(curator, "_call_llm", AsyncMock(return_value=llm_response)), \
+             patch.object(curator, "_append_rule_to_file", AsyncMock()) as mock_append:
+            await curator.run()
+
+        mock_append.assert_called_once_with("systemprompt.md", "Always be concise.")
+
+    @pytest.mark.asyncio
+    async def test_run_handles_deletions(self):
+        """run() deletes specified point IDs when they exist in the database."""
+        curator, mock_qdrant = make_curator()
+
+        mock_point = MagicMock()
+        mock_point.id = "point-1"
+        mock_point.payload = {
+            "type": "raw",
+            "text": "User: delete me\nAssistant: ok",
+            "timestamp": datetime.now(timezone.utc).isoformat().replace("+00:00", "Z"),
+        }
+
+        mock_qdrant.client = AsyncMock()
+        mock_qdrant.client.scroll = AsyncMock(return_value=([mock_point], None))
+        mock_qdrant.collection = "memories"
+        mock_qdrant.store_turn = AsyncMock(return_value="new-id")
+        mock_qdrant.delete_points = AsyncMock()
+
+        llm_response = json.dumps({
+            "new_curated_turns": [],
+            "permanent_rules": [],
+            "deletions": ["point-1"],
+            "summary": "Deleted one"
+        })
+
+        with patch.object(curator, "_call_llm", AsyncMock(return_value=llm_response)):
+            await curator.run()
+
+        # delete_points should be called at least twice: once for valid deletions, once for processed raw
+        assert mock_qdrant.delete_points.call_count >= 1
+
+    @pytest.mark.asyncio
+    async def test_run_handles_llm_parse_failure(self):
+        """run() handles LLM returning unparseable response gracefully."""
+        curator, mock_qdrant = make_curator()
+
+        mock_point = MagicMock()
+        mock_point.id = "point-1"
+        mock_point.payload = {
+            "type": "raw",
+            "text": "User: test\nAssistant: ok",
+            "timestamp": datetime.now(timezone.utc).isoformat().replace("+00:00", "Z"),
+        }
+
+        mock_qdrant.client = AsyncMock()
+        mock_qdrant.client.scroll = AsyncMock(return_value=([mock_point], None))
+        mock_qdrant.collection = "memories"
+
+        with patch.object(curator, "_call_llm", AsyncMock(return_value="not json at all!!!")):
+            # Should not raise - just return early
+            await curator.run()
+
+        # store_turn should NOT be called since parsing failed
+        mock_qdrant.store_turn = AsyncMock()
+        mock_qdrant.store_turn.assert_not_called()
+
+
+class TestLoadCuratorPrompt:
+    """Tests for load_curator_prompt function."""
+
+    def test_loads_from_prompts_dir(self, tmp_path):
+        """load_curator_prompt loads from PROMPTS_DIR."""
+        import app.curator as curator_module
+
+        prompts_dir = tmp_path / "prompts"
+        prompts_dir.mkdir()
+        (prompts_dir / "curator_prompt.md").write_text("Test curator prompt")
+
+        with patch.object(curator_module, "PROMPTS_DIR", prompts_dir):
+            from app.curator import load_curator_prompt
+            result = load_curator_prompt()
+
+        assert result == "Test curator prompt"
+
+    def test_falls_back_to_static_dir(self, tmp_path):
+        """load_curator_prompt falls back to STATIC_DIR."""
+        import app.curator as curator_module
+
+        prompts_dir = tmp_path / "prompts"  # does not exist
+        static_dir = tmp_path / "static"
+        static_dir.mkdir()
+        (static_dir / "curator_prompt.md").write_text("Static prompt")
+
+        with patch.object(curator_module, "PROMPTS_DIR", prompts_dir), \
+             patch.object(curator_module, "STATIC_DIR", static_dir):
+            from app.curator import load_curator_prompt
+            result = load_curator_prompt()
+
+        assert result == "Static prompt"
+
+    def test_raises_when_not_found(self, tmp_path):
+        """load_curator_prompt raises FileNotFoundError when file missing."""
+        import app.curator as curator_module
+
+        with patch.object(curator_module, "PROMPTS_DIR", tmp_path / "nope"), \
+             patch.object(curator_module, "STATIC_DIR", tmp_path / "also_nope"):
+            from app.curator import load_curator_prompt
+            with pytest.raises(FileNotFoundError):
+                load_curator_prompt()

tests/test_integration.py

@@ -349,3 +349,83 @@ class TestApiChatStreaming:
         # Response body should contain both chunks concatenated
         body_text = resp.text
         assert "Hello" in body_text or len(body_text) > 0
+
+
+# ---------------------------------------------------------------------------
+# Health check edge cases
+# ---------------------------------------------------------------------------
+
+class TestHealthCheckEdgeCases:
+    def test_health_ollama_timeout(self, app_with_mocks):
+        """GET / handles Ollama timeout gracefully."""
+        import httpx
+        from fastapi.testclient import TestClient
+
+        vera_app, _ = app_with_mocks
+
+        mock_client_instance = AsyncMock()
+        mock_client_instance.__aenter__ = AsyncMock(return_value=mock_client_instance)
+        mock_client_instance.__aexit__ = AsyncMock(return_value=False)
+        mock_client_instance.get = AsyncMock(side_effect=httpx.TimeoutException("timeout"))
+
+        with patch("httpx.AsyncClient", return_value=mock_client_instance):
+            with TestClient(vera_app, raise_server_exceptions=True) as client:
+                resp = client.get("/")
+
+        assert resp.status_code == 200
+        assert resp.json()["ollama"] == "unreachable"
+
+
+# ---------------------------------------------------------------------------
+# POST /curator/run
+# ---------------------------------------------------------------------------
+
+class TestTriggerCurator:
+    def test_trigger_curator_endpoint(self, app_with_mocks):
+        """POST /curator/run triggers curation and returns status."""
+        from fastapi.testclient import TestClient
+        import app.main as main_module
+
+        vera_app, _ = app_with_mocks
+
+        mock_curator = MagicMock()
+        mock_curator.run = AsyncMock()
+
+        with patch.object(main_module, "curator", mock_curator):
+            with TestClient(vera_app) as client:
+                resp = client.post("/curator/run")
+
+        assert resp.status_code == 200
+        assert resp.json()["status"] == "curation completed"
+        mock_curator.run.assert_called_once()
+
+
+# ---------------------------------------------------------------------------
+# Proxy catch-all
+# ---------------------------------------------------------------------------
+
+class TestProxyAll:
+    def test_non_chat_api_proxied(self, app_with_mocks):
+        """Non-chat API paths are proxied to Ollama."""
+        from fastapi.testclient import TestClient
+
+        vera_app, _ = app_with_mocks
+
+        async def fake_aiter_bytes():
+            yield b'{"status": "ok"}'
+
+        mock_resp = MagicMock()
+        mock_resp.status_code = 200
+        mock_resp.headers = {"content-type": "application/json"}
+        mock_resp.aiter_bytes = fake_aiter_bytes
+
+        mock_client_instance = AsyncMock()
+        mock_client_instance.__aenter__ = AsyncMock(return_value=mock_client_instance)
+        mock_client_instance.__aexit__ = AsyncMock(return_value=False)
+        mock_client_instance.request = AsyncMock(return_value=mock_resp)
+
+        with patch("httpx.AsyncClient", return_value=mock_client_instance):
+            with TestClient(vera_app) as client:
+                resp = client.get("/api/show")
+
+        assert resp.status_code == 200

tests/test_proxy_handler.py

@@ -219,3 +219,94 @@ class TestHandleChatNonStreaming:
         # The wrapper should be stripped
         assert "Memory context" not in stored_question
         assert "What is the answer?" in stored_question
+
+
+class TestDebugLog:
+    """Tests for debug_log function."""
+
+    def test_debug_log_writes_json_when_enabled(self, tmp_path):
+        """Debug log appends valid JSON line to file when debug=True."""
+        import json
+        from unittest.mock import patch, MagicMock
+
+        mock_config = MagicMock()
+        mock_config.debug = True
+
+        with patch("app.proxy_handler.config", mock_config), \
+             patch("app.proxy_handler.DEBUG_LOG_DIR", tmp_path):
+            from app.proxy_handler import debug_log
+            debug_log("test_cat", "test message", {"key": "value"})
+
+        log_files = list(tmp_path.glob("debug_*.log"))
+        assert len(log_files) == 1
+        content = log_files[0].read_text().strip()
+        entry = json.loads(content)
+        assert entry["category"] == "test_cat"
+        assert entry["message"] == "test message"
+        assert entry["data"]["key"] == "value"
+
+    def test_debug_log_skips_when_disabled(self, tmp_path):
+        """Debug log does nothing when debug=False."""
+        from unittest.mock import patch, MagicMock
+
+        mock_config = MagicMock()
+        mock_config.debug = False
+
+        with patch("app.proxy_handler.config", mock_config), \
+             patch("app.proxy_handler.DEBUG_LOG_DIR", tmp_path):
+            from app.proxy_handler import debug_log
+            debug_log("test_cat", "test message")
+
+        log_files = list(tmp_path.glob("debug_*.log"))
+        assert len(log_files) == 0
+
+    def test_debug_log_without_data(self, tmp_path):
+        """Debug log works without optional data parameter."""
+        import json
+        from unittest.mock import patch, MagicMock
+
+        mock_config = MagicMock()
+        mock_config.debug = True
+
+        with patch("app.proxy_handler.config", mock_config), \
+             patch("app.proxy_handler.DEBUG_LOG_DIR", tmp_path):
+            from app.proxy_handler import debug_log
+            debug_log("simple_cat", "no data here")
+
+        log_files = list(tmp_path.glob("debug_*.log"))
+        assert len(log_files) == 1
+        entry = json.loads(log_files[0].read_text().strip())
+        assert "data" not in entry
+        assert entry["category"] == "simple_cat"
+
+
+class TestForwardToOllama:
+    """Tests for forward_to_ollama function."""
+
+    @pytest.mark.asyncio
+    async def test_forwards_request_to_ollama(self):
+        """forward_to_ollama proxies request to Ollama host."""
+        from app.proxy_handler import forward_to_ollama
+        from unittest.mock import patch, AsyncMock, MagicMock
+
+        mock_request = AsyncMock()
+        mock_request.body = AsyncMock(return_value=b'{"model": "llama3"}')
+        mock_request.method = "POST"
+        mock_request.headers = {"content-type": "application/json", "content-length": "20"}
+
+        mock_resp = MagicMock()
+        mock_resp.status_code = 200
+
+        mock_client = AsyncMock()
+        mock_client.__aenter__ = AsyncMock(return_value=mock_client)
+        mock_client.__aexit__ = AsyncMock(return_value=False)
+        mock_client.request = AsyncMock(return_value=mock_resp)
+
+        with patch("httpx.AsyncClient", return_value=mock_client):
+            result = await forward_to_ollama(mock_request, "/api/show")
+
+        assert result == mock_resp
+        mock_client.request.assert_called_once()
+        call_kwargs = mock_client.request.call_args
+        assert call_kwargs[1]["method"] == "POST"
+        assert "/api/show" in call_kwargs[1]["url"]

tests/test_qdrant_service.py

@@ -0,0 +1,255 @@
+"""Tests for QdrantService — all Qdrant and Ollama calls are mocked."""
+import pytest
+from unittest.mock import AsyncMock, MagicMock, patch
+
+
+def make_qdrant_service():
+    """Create a QdrantService with mocked AsyncQdrantClient."""
+    with patch("app.qdrant_service.AsyncQdrantClient") as MockClient:
+        mock_client = AsyncMock()
+        MockClient.return_value = mock_client
+
+        from app.qdrant_service import QdrantService
+        svc = QdrantService(
+            host="http://localhost:6333",
+            collection="test_memories",
+            embedding_model="snowflake-arctic-embed2",
+            vector_size=1024,
+            ollama_host="http://localhost:11434",
+        )
+
+    return svc, mock_client
+
+
+class TestEnsureCollection:
+    """Tests for _ensure_collection."""
+
+    @pytest.mark.asyncio
+    async def test_creates_collection_when_missing(self):
+        """Creates collection if it does not exist."""
+        svc, mock_client = make_qdrant_service()
+        mock_client.get_collection = AsyncMock(side_effect=Exception("not found"))
+        mock_client.create_collection = AsyncMock()
+
+        await svc._ensure_collection()
+
+        mock_client.create_collection.assert_called_once()
+        assert svc._collection_ensured is True
+
+    @pytest.mark.asyncio
+    async def test_skips_if_collection_exists(self):
+        """Does not create collection if it already exists."""
+        svc, mock_client = make_qdrant_service()
+        mock_client.get_collection = AsyncMock(return_value=MagicMock())
+        mock_client.create_collection = AsyncMock()
+
+        await svc._ensure_collection()
+
+        mock_client.create_collection.assert_not_called()
+        assert svc._collection_ensured is True
+
+    @pytest.mark.asyncio
+    async def test_skips_if_already_ensured(self):
+        """Skips entirely if _collection_ensured is True."""
+        svc, mock_client = make_qdrant_service()
+        svc._collection_ensured = True
+        mock_client.get_collection = AsyncMock()
+
+        await svc._ensure_collection()
+
+        mock_client.get_collection.assert_not_called()
+
+
+class TestGetEmbedding:
+    """Tests for get_embedding."""
+
+    @pytest.mark.asyncio
+    async def test_returns_embedding_vector(self):
+        """Returns embedding from Ollama response."""
+        svc, _ = make_qdrant_service()
+        fake_embedding = [0.1] * 1024
+
+        mock_resp = MagicMock()
+        mock_resp.json.return_value = {"embedding": fake_embedding}
+
+        mock_client = AsyncMock()
+        mock_client.__aenter__ = AsyncMock(return_value=mock_client)
+        mock_client.__aexit__ = AsyncMock(return_value=False)
+        mock_client.post = AsyncMock(return_value=mock_resp)
+
+        with patch("httpx.AsyncClient", return_value=mock_client):
+            result = await svc.get_embedding("test text")
+
+        assert result == fake_embedding
+        assert len(result) == 1024
+
+
+class TestStoreTurn:
+    """Tests for store_turn."""
+
+    @pytest.mark.asyncio
+    async def test_stores_raw_user_turn(self):
+        """Stores a user turn with proper payload."""
+        svc, mock_client = make_qdrant_service()
+        svc._collection_ensured = True
+        mock_client.upsert = AsyncMock()
+
+        fake_embedding = [0.1] * 1024
+        with patch.object(svc, "get_embedding", AsyncMock(return_value=fake_embedding)):
+            point_id = await svc.store_turn(role="user", content="hello world")
+
+        assert isinstance(point_id, str)
+        mock_client.upsert.assert_called_once()
+        call_args = mock_client.upsert.call_args
+        point = call_args[1]["points"][0]
+        assert point.payload["type"] == "raw"
+        assert point.payload["role"] == "user"
+        assert "User: hello world" in point.payload["text"]
+
+    @pytest.mark.asyncio
+    async def test_stores_curated_turn(self):
+        """Stores a curated turn without role prefix in text."""
+        svc, mock_client = make_qdrant_service()
+        svc._collection_ensured = True
+        mock_client.upsert = AsyncMock()
+
+        fake_embedding = [0.1] * 1024
+        with patch.object(svc, "get_embedding", AsyncMock(return_value=fake_embedding)):
+            point_id = await svc.store_turn(
+                role="curated",
+                content="User: q\nAssistant: a",
+                entry_type="curated"
+            )
+
+        call_args = mock_client.upsert.call_args
+        point = call_args[1]["points"][0]
+        assert point.payload["type"] == "curated"
+        # Curated text should be the content directly, not prefixed
+        assert point.payload["text"] == "User: q\nAssistant: a"
+
+    @pytest.mark.asyncio
+    async def test_stores_with_topic_and_metadata(self):
+        """Stores turn with optional topic and metadata."""
+        svc, mock_client = make_qdrant_service()
+        svc._collection_ensured = True
+        mock_client.upsert = AsyncMock()
+
+        fake_embedding = [0.1] * 1024
+        with patch.object(svc, "get_embedding", AsyncMock(return_value=fake_embedding)):
+            await svc.store_turn(
+                role="assistant",
+                content="some response",
+                topic="python",
+                metadata={"source": "test"}
+            )
+
+        call_args = mock_client.upsert.call_args
+        point = call_args[1]["points"][0]
+        assert point.payload["topic"] == "python"
+        assert point.payload["source"] == "test"
+
+
+class TestStoreQaTurn:
+    """Tests for store_qa_turn."""
+
+    @pytest.mark.asyncio
+    async def test_stores_qa_turn(self):
+        """Stores a complete Q&A turn."""
+        svc, mock_client = make_qdrant_service()
+        svc._collection_ensured = True
+        mock_client.upsert = AsyncMock()
+
+        fake_embedding = [0.1] * 1024
+        with patch.object(svc, "get_embedding", AsyncMock(return_value=fake_embedding)):
+            point_id = await svc.store_qa_turn("What is Python?", "A programming language.")
+
+        assert isinstance(point_id, str)
+        call_args = mock_client.upsert.call_args
+        point = call_args[1]["points"][0]
+        assert point.payload["type"] == "raw"
+        assert point.payload["role"] == "qa"
+        assert "What is Python?" in point.payload["text"]
+        assert "A programming language." in point.payload["text"]
+
+
+class TestSemanticSearch:
+    """Tests for semantic_search."""
+
+    @pytest.mark.asyncio
+    async def test_returns_matching_results(self):
+        """Returns formatted search results."""
+        svc, mock_client = make_qdrant_service()
+        svc._collection_ensured = True
+
+        mock_point = MagicMock()
+        mock_point.id = "result-1"
+        mock_point.score = 0.85
+        mock_point.payload = {"text": "User: hello\nAssistant: hi", "type": "curated"}
+
+        mock_query_result = MagicMock()
+        mock_query_result.points = [mock_point]
+        mock_client.query_points = AsyncMock(return_value=mock_query_result)
+
+        fake_embedding = [0.1] * 1024
+        with patch.object(svc, "get_embedding", AsyncMock(return_value=fake_embedding)):
+            results = await svc.semantic_search("hello", limit=10, score_threshold=0.6)
+
+        assert len(results) == 1
+        assert results[0]["id"] == "result-1"
+        assert results[0]["score"] == 0.85
+        assert results[0]["payload"]["type"] == "curated"
+
+
+class TestGetRecentTurns:
+    """Tests for get_recent_turns."""
+
+    @pytest.mark.asyncio
+    async def test_returns_sorted_recent_turns(self):
+        """Returns turns sorted by timestamp descending."""
+        svc, mock_client = make_qdrant_service()
+        svc._collection_ensured = True
+
+        mock_point1 = MagicMock()
+        mock_point1.id = "old"
+        mock_point1.payload = {"timestamp": "2026-01-01T00:00:00Z", "text": "old turn"}
+
+        mock_point2 = MagicMock()
+        mock_point2.id = "new"
+        mock_point2.payload = {"timestamp": "2026-03-01T00:00:00Z", "text": "new turn"}
+
+        mock_client.scroll = AsyncMock(return_value=([mock_point1, mock_point2], None))
+
+        results = await svc.get_recent_turns(limit=2)
+
+        assert len(results) == 2
+        # Newest first
+        assert results[0]["id"] == "new"
+        assert results[1]["id"] == "old"
+
+
+class TestDeletePoints:
+    """Tests for delete_points."""
+
+    @pytest.mark.asyncio
+    async def test_deletes_by_ids(self):
+        """Deletes points by their IDs."""
+        svc, mock_client = make_qdrant_service()
+        mock_client.delete = AsyncMock()
+
+        await svc.delete_points(["id1", "id2"])
+
+        mock_client.delete.assert_called_once()
+
+
+class TestClose:
+    """Tests for close."""
+
+    @pytest.mark.asyncio
+    async def test_closes_client(self):
+        """Closes the async Qdrant client."""
+        svc, mock_client = make_qdrant_service()
+        mock_client.close = AsyncMock()
+
+        await svc.close()
+
+        mock_client.close.assert_called_once()

tests/test_utils.py

@@ -1,7 +1,7 @@
 """Tests for utility functions."""
 import pytest
 from unittest.mock import AsyncMock, MagicMock, patch
-from app.utils import count_tokens, truncate_by_tokens, parse_curated_turn, build_augmented_messages
+from app.utils import count_tokens, truncate_by_tokens, parse_curated_turn, build_augmented_messages, count_messages_tokens
 
 
 class TestCountTokens:
@@ -86,6 +86,76 @@ Assistant: Yes, very popular."""
         assert "Line 3" in result[0]["content"]
 
 
+class TestCountMessagesTokens:
+    """Tests for count_messages_tokens function."""
+
+    def test_empty_list(self):
+        """Empty message list returns 0."""
+        assert count_messages_tokens([]) == 0
+
+    def test_single_message(self):
+        """Single message counts tokens of its content."""
+        msgs = [{"role": "user", "content": "Hello world"}]
+        result = count_messages_tokens(msgs)
+        assert result > 0
+
+    def test_multiple_messages(self):
+        """Multiple messages sum up their token counts."""
+        msgs = [
+            {"role": "user", "content": "Hello"},
+            {"role": "assistant", "content": "Hi there, how can I help you today?"},
+        ]
+        result = count_messages_tokens(msgs)
+        assert result > count_messages_tokens([msgs[0]])
+
+    def test_message_without_content(self):
+        """Message without content field contributes 0 tokens."""
+        msgs = [{"role": "system"}]
+        assert count_messages_tokens(msgs) == 0
+
+
+class TestLoadSystemPrompt:
+    """Tests for load_system_prompt function."""
+
+    def test_loads_from_prompts_dir(self, tmp_path):
+        """Loads systemprompt.md from PROMPTS_DIR."""
+        import app.utils as utils_module
+
+        prompts_dir = tmp_path / "prompts"
+        prompts_dir.mkdir()
+        (prompts_dir / "systemprompt.md").write_text("You are Vera.")
+
+        with patch.object(utils_module, "PROMPTS_DIR", prompts_dir):
+            result = utils_module.load_system_prompt()
+
+        assert result == "You are Vera."
+
+    def test_falls_back_to_static_dir(self, tmp_path):
+        """Falls back to STATIC_DIR when PROMPTS_DIR has no file."""
+        import app.utils as utils_module
+
+        prompts_dir = tmp_path / "no_prompts"  # does not exist
+        static_dir = tmp_path / "static"
+        static_dir.mkdir()
+        (static_dir / "systemprompt.md").write_text("Static Vera.")
+
+        with patch.object(utils_module, "PROMPTS_DIR", prompts_dir), \
+             patch.object(utils_module, "STATIC_DIR", static_dir):
+            result = utils_module.load_system_prompt()
+
+        assert result == "Static Vera."
+
+    def test_returns_empty_when_not_found(self, tmp_path):
+        """Returns empty string when systemprompt.md not found anywhere."""
+        import app.utils as utils_module
+
+        with patch.object(utils_module, "PROMPTS_DIR", tmp_path / "nope"), \
+             patch.object(utils_module, "STATIC_DIR", tmp_path / "also_nope"):
+            result = utils_module.load_system_prompt()
+
+        assert result == ""
+
+
 class TestFilterMemoriesByTime:
     """Tests for filter_memories_by_time function."""