feat(web): стабилизация UI, Gemini-скроллинг, роутеры контекста/снапшотов и актуализация роадмапа

modules/web_api/routers/context.py

@@ -0,0 +1,50 @@
+"""
+===============================================================================
+FILE: modules/web_api/routers/context.py
+ROLE: REST API мониторинга состояния сессии и очистки памяти диалога.
+===============================================================================
+"""
+
+from fastapi import APIRouter, Depends
+from pydantic import BaseModel
+from typing import Optional
+
+from routers.auth import get_current_user
+from modules.web_api.llm.db.db_prompts import db_get_session_state, db_clear_session_state
+from modules.web_api.llm.db.db_chat import db_get_chat_history, db_purge_ephemeral_messages, db_clear_chat_history
+
+router = APIRouter(prefix="/api/v1/context", tags=["Context"])
+
+
+class SessionActionRequest(BaseModel):
+    session_id: Optional[str] = "web_session_main"
+
+
+@router.get("/state")
+def api_get_context_state(session_id: str = "web_session_main", current_user = Depends(get_current_user)):
+    state = db_get_session_state(session_id) or {}
+    history = db_get_chat_history(session_id, limit=50)
+    
+    ephemeral_count = sum(1 for m in history if dict(m).get("is_ephemeral") == 1)
+    total_messages = len(history)
+
+    return {
+        "session_id": session_id,
+        "active_state": state.get("state_type", "IDLE"),
+        "state_data": state.get("data_json", {}),
+        "total_messages": total_messages,
+        "ephemeral_messages": ephemeral_count
+    }
+
+
+@router.post("/purge-ephemeral")
+def api_purge_ephemeral(req: SessionActionRequest, current_user = Depends(get_current_user)):
+    purged = db_purge_ephemeral_messages(req.session_id)
+    return {"status": "success", "purged_count": purged}
+
+
+@router.post("/clear-all")
+def api_clear_all_context(req: SessionActionRequest, current_user = Depends(get_current_user)):
+    db_clear_session_state(req.session_id)
+    db_clear_chat_history(req.session_id)
+    return {"status": "success", "message": "Контекст сессии полностью очищен"}