Add recipe suggestions, chat tab, and major workflow improvements

- Replace 7-day grid menu with browsable recipe suggestion cards (swap, remove, make this)
- Add Chat tab: conversational AI with full pantry/menu/grocery context
- Grocery list works without a menu (pantry-only mode)
- Individual grocery checkboxes auto-add items to pantry
- Swap modal with optional preference input
- User notes textarea on menu and grocery generation
- Clear button for menu and grocery list
- LLM notes/summary displayed after generation, persisted to DB
- Favicon linked in HTML
- Category dropdown styled for dark theme
- System prompt configurable via SYSTEM_PROMPT in .env
- Fix startup error (ollama_timeout default), DB migration for menu_plans.notes
- Simplify: batch N+1 queries, extract _current_monday(), merge chat sync fns,
  asyncio.get_running_loop(), fix currentGroceryId bug, cap chat history

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

1 files changed, 1 insertions, 0 deletions

diff --git a/config.py b/config.py
index 1f06627..f21666c 100644
--- a/config.py
+++ b/config.py
@@ -6,6 +6,7 @@ class Settings(BaseSettings):
     model_name: str
     database_url: str
     ollama_timeout: int = 120
+    system_prompt: str = "You are a professional chef assistant. You MUST respond with valid JSON only — no markdown, no explanation outside the JSON. You prioritize:\n1. Using ingredients that expire soonest\n2. Nutritional variety across the week\n3. Avoiding meals eaten in the past 7 days\n4. Practical home recipes under 60 minutes"
 
     class Config:
         env_file = ".env"