feat: add cooking instructions to vote email; shopping list grouped by meal; fix current_price field

- Vote email: recipe cards now include a collapsible <details> block with
  numbered cooking steps (recipe.instructions ARRAY)
- Shopping list email: ingredients now grouped under each meal heading
  instead of a flat deduplicated list
- step_finalize: fix grocery price lookup (.price -> .current_price)

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

backend/app/services/orchestrator/steps.py

@@ -223,6 +223,21 @@ def step_email(run: "WeeklyRun", db: "Session") -> None:
                 if ing_rows else ""
             )
 
+            # Cooking instructions (collapsed by default)
+            instructions = item.recipe.instructions or [] if item.recipe else []
+            instr_rows = "".join(
+                f"<li style='margin-bottom:4px'>{html.escape(str(step))}</li>"
+                for step in instructions
+            )
+            instructions_block = (
+                f"<details style='margin-top:8px'>"
+                f"<summary style='font-size:13px;color:#374151;cursor:pointer'>"
+                f"Cooking steps ({len(instructions)})</summary>"
+                f"<ol style='margin:8px 0;padding-left:20px;font-size:13px;color:#555'>{instr_rows}</ol>"
+                f"</details>"
+                if instr_rows else ""
+            )
+
             # Estimated cost: sum top-confidence grocery match prices
             est_cost = 0.0
             for ing in ingredients:
@@ -247,6 +262,7 @@ def step_email(run: "WeeklyRun", db: "Session") -> None:
                 f'{img_block}'
                 f'<h3 style="margin:8px 0 4px">{recipe_name}</h3>'
                 f'{ing_block}'
+                f'{instructions_block}'
                 f'{cost_block}'
                 f'<a href="{vote_url}" style="display:inline-block;margin-top:8px;padding:8px 16px;'
                 f'background:#2563eb;color:white;text-decoration:none;border-radius:6px;font-size:14px">'
@@ -363,21 +379,20 @@ def step_finalize(run: "WeeklyRun", db: "Session") -> None:
 
     if approved_items:
         total_cost = 0.0
-        rows_html = ""
+        sections_html = ""
-        seen_ingredients: set = set()
         for item in approved_items:
             if not item.recipe:
                 continue
+            recipe_name = html.escape(item.recipe.name)
+            rows_html = ""
             for ing in (item.recipe.ingredients or []):
                 ing_id = str(ing.get("ingredient_id", ""))
                 ing_name = _fin_names.get(ing_id, "")
-                if not ing_name or ing_name in seen_ingredients:
+                if not ing_name:
                     continue
-                seen_ingredients.add(ing_name)
                 qty = ing.get("qty", "")
                 unit = ing.get("unit", "")
 
-                # Find Lucky CA match
                 match = (
                     db.query(IngredientGroceryMatch)
                     .join(Ingredient, IngredientGroceryMatch.ingredient_id == Ingredient.id)
@@ -387,7 +402,7 @@ def step_finalize(run: "WeeklyRun", db: "Session") -> None:
                 )
                 if match and match.grocery_item:
                     lucky_name = html.escape(match.grocery_item.name or "")
-                    price = float(match.grocery_item.price or 0)
+                    price = float(match.grocery_item.current_price or 0)
                     total_cost += price
                     price_str = f"${price:.2f}"
                 else:
@@ -403,19 +418,24 @@ def step_finalize(run: "WeeklyRun", db: "Session") -> None:
                     f"</tr>"
                 )
 
+            sections_html += (
+                f"<h3 style='margin:20px 0 4px;font-size:15px'>{recipe_name}</h3>"
+                f"<table style='border-collapse:collapse;width:100%;font-size:13px;margin-bottom:8px'>"
+                f"<thead><tr style='background:#f3f4f6'>"
+                f"<th style='text-align:left;padding:6px 8px;border-bottom:1px solid #e5e7eb'>Ingredient</th>"
+                f"<th style='text-align:left;padding:6px 8px;border-bottom:1px solid #e5e7eb'>Qty</th>"
+                f"<th style='text-align:left;padding:6px 8px;border-bottom:1px solid #e5e7eb'>At Lucky</th>"
+                f"<th style='text-align:left;padding:6px 8px;border-bottom:1px solid #e5e7eb'>Price</th>"
+                f"</tr></thead>"
+                f"<tbody>{rows_html}</tbody>"
+                f"</table>"
+            )
+
         email_html = (
             f"<div style='font-family:sans-serif;max-width:600px;margin:0 auto'>"
             f"<h2>Shopping list — week of {run.week_start_date}</h2>"
             f"<p>{len(approved_items)} meal(s) approved.</p>"
-            f"<table style='border-collapse:collapse;width:100%;font-size:14px'>"
+            f"{sections_html}"
-            f"<thead><tr style='background:#f3f4f6'>"
-            f"<th style='text-align:left;padding:6px 8px;border-bottom:2px solid #e5e7eb'>Ingredient</th>"
-            f"<th style='text-align:left;padding:6px 8px;border-bottom:2px solid #e5e7eb'>Qty</th>"
-            f"<th style='text-align:left;padding:6px 8px;border-bottom:2px solid #e5e7eb'>At Lucky</th>"
-            f"<th style='text-align:left;padding:6px 8px;border-bottom:2px solid #e5e7eb'>Price</th>"
-            f"</tr></thead>"
-            f"<tbody>{rows_html}</tbody>"
-            f"</table>"
             f"<p style='margin-top:16px;font-weight:bold'>Estimated total: ${total_cost:.2f}</p>"
             f"</div>"
         )