more testing

math-tutor/backend/app/api/canvas.py

@@ -67,7 +67,7 @@ def save_canvas(request: CanvasSaveRequest) -> CanvasSaveResponse:
     with file_path.open("wb") as handle:
         handle.write(raw)
 
-    latex = "\\frac{a}{b}"
+    latex = "\\frac{a}{b}" # Placeholder
     if mathpix_client:
         try:
             image = mathpix_client.image_new(str(file_path))

math-tutor/backend/app/api/retrieval.py

@@ -39,7 +39,7 @@ class IngestRequest(BaseModel):
 class QueryRequest(BaseModel):
     pg_url: Optional[str] = None
     query: str = Field(..., min_length=1)
-    k: int = 8
+    k: int = 4
     expand_links: bool = True
     section_index: Optional[int] = None
     subsection_index: Optional[int] = None

math-tutor/backend/app/services/chat_engine.py

@@ -19,7 +19,7 @@ Zitiere Quellen inline mit den eckigen Klammern, die im Kontext vorangestellt si
 """
 
 CONTEXT_LIMITS = {
-    "direct": 8,
+    "direct": 4,
     "indirect": 6,
     "subsection": 2,
     "section": 1,

math-tutor/backend/app/services/context_store.py

@@ -14,7 +14,7 @@ _LOG_DIR = os.path.join("logs", "context_sheets")
 
 
 def _utc_now() -> str:
-    return datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%SZ")
+    return datetime.now().strftime("%Y-%m-%dT%H:%M:%SZ")
 
 
 def is_new_chat(messages: list[dict]) -> bool:

math-tutor/backend/app/services/orchestrator_engine.py

@@ -62,12 +62,15 @@ def run_chat(messages: list[dict], draft: str | None = None) -> dict:
         _bootstrap_context(sheet, last_user.get("content", ""), tool_log)
         sheet_text = context_store.format_sheet(sheet)
 
-    reply = hint_tool.generate_hint(
-        task=last_user.get("content", ""),
-        solution=context_store.latest_math_solution(sheet),
-        history=history_text,
-        context_sheet=sheet_text,
-    )
+    hint_args = {
+        "task": last_user.get("content", ""),
+        "solution": context_store.latest_math_solution(sheet),
+        "history": history_text,
+        "context_sheet": sheet_text,
+    }
+    reply = hint_tool.generate_hint(**hint_args)
+    context_store.add_tool_output(sheet, {"name": "generate_hint", "arguments": hint_args, "response": reply})
+    _append_tool_log(tool_log, "generate_hint", hint_args, reply)
 
     if not reply:
         reply = "Dazu steht nichts im Material"

math-tutor/backend/app/services/retrieval_service.py

@@ -20,7 +20,7 @@ SYSTEM_PROMPT = (
 )
 
 CONTEXT_LIMITS = {
-    "direct": 8,
+    "direct": 4,
     "indirect": 6,
     "subsection": 2,
     "section": 1,

math-tutor/backend/app/services/vector_store.py

@@ -272,7 +272,7 @@ def retrieve(
     pg_url: str,
     embedder: EmbeddingLike,
     query: str,
-    k: int = 8,
+    k: int = 4,
     section_index: Optional[int] = None,
     subsection_index: Optional[int] = None,
     type_filter: Optional[List[str]] = None,

math-tutor/backend/app/tools/hint_tool.py

@@ -9,7 +9,7 @@ def generate_hint(
 ) -> str:
     prompt = (
         "Du bist ein didaktischer Tutor. "
-        "Gib einen naechsten hilfreichen Hinweis, aber keine komplette Loesung. "
+        "Gib einen naechsten hilfreichen Hinweis, gib auf keinen Fall eine Lösung aus. Wiederhole nicht den Kontex"
         "Halte dich kurz und klar.\n\n"
         "Aufgabe:\n"
         + task