实现原料逻辑删除功能

- 为fabrics表添加is_deleted字段用于标记删除状态
- 修改delete_raw方法实现逻辑删除而非物理删除
- 更新所有查询语句过滤已删除的原料数据
- 更新库存视图过滤已删除的原料和相关记录
- 保留历史数据,支持数据恢复

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

database.py

@@ -145,6 +145,10 @@ class DatabaseManager:
                     pass
 
                 # 添加逻辑删除字段
+                try:
+                    conn.execute("ALTER TABLE fabrics ADD COLUMN is_deleted INTEGER DEFAULT 0")
+                except:
+                    pass
                 try:
                     conn.execute("ALTER TABLE fabric_stock_in ADD COLUMN is_deleted INTEGER DEFAULT 0")
                 except:
@@ -223,9 +227,10 @@ class DatabaseManager:
                 conn.execute('CREATE INDEX IF NOT EXISTS idx_fabric_consumption_date ON fabric_consumption(consume_date)')
 
                 # 添加库存计算视图
+                conn.execute('DROP VIEW IF EXISTS fabric_stock_view')
                 conn.execute('''
-                    CREATE VIEW IF NOT EXISTS fabric_stock_view AS
-                    SELECT 
+                    CREATE VIEW fabric_stock_view AS
+                    SELECT
                         f.model,
                         f.category,
                         f.supplier,
@@ -238,13 +243,16 @@ class DatabaseManager:
                     LEFT JOIN (
                         SELECT model, SUM(quantity) as total_in
                         FROM fabric_stock_in
+                        WHERE is_deleted IS NULL OR is_deleted = 0
                         GROUP BY model
                     ) stock_in ON f.model = stock_in.model
                     LEFT JOIN (
                         SELECT model, SUM(consume_quantity) as total_consumed
                         FROM fabric_consumption
+                        WHERE is_deleted IS NULL OR is_deleted = 0
                         GROUP BY model
                     ) consumption ON f.model = consumption.model
+                    WHERE f.is_deleted IS NULL OR f.is_deleted = 0
                 ''')
 
                 # 初始化默认密码
@@ -284,8 +292,8 @@ def get_fabric_categories(db_path):
         with get_db_connection(db_path) as conn:
             cursor = conn.execute("""
                 SELECT DISTINCT category
-                FROM fabrics 
-                WHERE category IS NOT NULL AND category != '' 
+                FROM fabrics
+                WHERE category IS NOT NULL AND category != '' AND (is_deleted IS NULL OR is_deleted = 0)
                 ORDER BY category
             """)
             categories = set()
@@ -306,8 +314,8 @@ def get_fabric_types_by_category(db_path, category):
         with get_db_connection(db_path) as conn:
             cursor = conn.execute("""
                 SELECT DISTINCT fabric_type
-                FROM fabrics 
-                WHERE category = ? AND fabric_type IS NOT NULL AND fabric_type != ''
+                FROM fabrics
+                WHERE category = ? AND fabric_type IS NOT NULL AND fabric_type != '' AND (is_deleted IS NULL OR is_deleted = 0)
                 ORDER BY fabric_type
             """, (category,))
             
@@ -325,9 +333,9 @@ def get_fabric_models_by_category_type(db_path, category, fabric_type):
     try:
         with get_db_connection(db_path) as conn:
             cursor = conn.execute("""
-                SELECT model, color, unit 
-                FROM fabrics 
-                WHERE category = ? OR category = ? OR category LIKE ?
+                SELECT model, color, unit
+                FROM fabrics
+                WHERE (category = ? OR category = ? OR category LIKE ?) AND (is_deleted IS NULL OR is_deleted = 0)
                 ORDER BY model
             """, (category, f"{category}-{fabric_type}", f"{category}-{fabric_type}-%"))