v1.1.0 新增大模型配置管理：页面可配置分析网页的LLM接口(名称/BaseURL/Key/模型/温度/超时/默认)，支持视觉标记——视觉模型走截图视觉分析路线，非视觉模型走DOM快照文本分析路线；任务创建可选模型并记录使用情况

db.py

@@ -34,17 +34,51 @@ def init_db():
             report_path TEXT
         )
     ''')
+    # 大模型配置表
+    c.execute('''
+        CREATE TABLE IF NOT EXISTS llm_configs (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            name TEXT NOT NULL,
+            base_url TEXT NOT NULL,
+            api_key TEXT NOT NULL,
+            model TEXT NOT NULL,
+            vision INTEGER DEFAULT 0,
+            temperature REAL DEFAULT 0.2,
+            timeout INTEGER DEFAULT 120,
+            is_default INTEGER DEFAULT 0,
+            created_at REAL
+        )
+    ''')
+    # tasks 表迁移：新增模型相关列（老库升级）
+    cols = [r[1] for r in c.execute('PRAGMA table_info(tasks)')]
+    if 'llm_config_id' not in cols:
+        c.execute('ALTER TABLE tasks ADD COLUMN llm_config_id INTEGER')
+    if 'llm_name' not in cols:
+        c.execute('ALTER TABLE tasks ADD COLUMN llm_name TEXT')
+    if 'vision' not in cols:
+        c.execute('ALTER TABLE tasks ADD COLUMN vision INTEGER DEFAULT 0')
+    # 首次启动：写入默认模型配置
+    n = c.execute('SELECT COUNT(*) FROM llm_configs').fetchone()[0]
+    if n == 0:
+        from config import (LLM_BASE_URL, LLM_API_KEY, LLM_MODEL,
+                            LLM_TEMPERATURE, LLM_TIMEOUT, DEFAULT_LLM_NAME)
+        c.execute(
+            'INSERT INTO llm_configs (name, base_url, api_key, model, vision, '
+            'temperature, timeout, is_default, created_at) VALUES (?,?,?,?,?,?,?,?,?)',
+            (DEFAULT_LLM_NAME, LLM_BASE_URL, LLM_API_KEY, LLM_MODEL, 0,
+             LLM_TEMPERATURE, LLM_TIMEOUT, 1, time.time()))
     c.commit()
     c.close()
 
 
-def create_task(url, goal, max_steps, timeout):
+def create_task(url, goal, max_steps, timeout, llm_config_id=None, llm_name=None, vision=0):
     tid = uuid.uuid4().hex[:12]
     c = _conn()
     c.execute(
-        'INSERT INTO tasks (id, url, goal, status, max_steps, timeout, created_at) '
-        'VALUES (?,?,?,?,?,?,?)',
-        (tid, url, goal, 'queued', max_steps, timeout, time.time()))
+        'INSERT INTO tasks (id, url, goal, status, max_steps, timeout, created_at, '
+        'llm_config_id, llm_name, vision) VALUES (?,?,?,?,?,?,?,?,?,?)',
+        (tid, url, goal, 'queued', max_steps, timeout, time.time(),
+         llm_config_id, llm_name, 1 if vision else 0))
     c.commit()
     c.close()
     return tid
@@ -104,3 +138,97 @@ def load_step_logs(tid):
                 except json.JSONDecodeError:
                     pass
     return out
+
+
+# ========== 大模型配置 ==========
+
+
+def list_llm_configs():
+    c = _conn()
+    rows = c.execute(
+        'SELECT * FROM llm_configs ORDER BY is_default DESC, id ASC'
+    ).fetchall()
+    c.close()
+    return [dict(r) for r in rows]
+
+
+def get_llm_config(cid):
+    c = _conn()
+    row = c.execute('SELECT * FROM llm_configs WHERE id=?', (cid,)).fetchone()
+    c.close()
+    return dict(row) if row else None
+
+
+def get_default_llm_config():
+    c = _conn()
+    row = c.execute('SELECT * FROM llm_configs WHERE is_default=1').fetchone()
+    if not row:
+        row = c.execute('SELECT * FROM llm_configs ORDER BY id ASC').fetchone()
+    c.close()
+    return dict(row) if row else None
+
+
+def create_llm_config(name, base_url, api_key, model, vision=0,
+                      temperature=0.2, timeout=120, is_default=False):
+    c = _conn()
+    if is_default:
+        c.execute('UPDATE llm_configs SET is_default=0')
+    c.execute(
+        'INSERT INTO llm_configs (name, base_url, api_key, model, vision, '
+        'temperature, timeout, is_default, created_at) VALUES (?,?,?,?,?,?,?,?,?)',
+        (name, base_url, api_key, model, 1 if vision else 0,
+         temperature, timeout, 1 if is_default else 0, time.time()))
+    c.commit()
+    cid = c.execute('SELECT last_insert_rowid()').fetchone()[0]
+    c.close()
+    return cid
+
+
+def update_llm_config(cid, **fields):
+    allowed = {'name', 'base_url', 'api_key', 'model', 'vision',
+               'temperature', 'timeout', 'is_default'}
+    c = _conn()
+    if fields.get('is_default'):
+        c.execute('UPDATE llm_configs SET is_default=0')
+    sets = []
+    vals = []
+    for k, v in fields.items():
+        if k not in allowed:
+            continue
+        if k == 'vision':
+            v = 1 if v else 0
+        if k == 'is_default':
+            v = 1 if v else 0
+        sets.append(f'{k}=?')
+        vals.append(v)
+    if sets:
+        c.execute(f'UPDATE llm_configs SET {", ".join(sets)} WHERE id=?', (*vals, cid))
+    c.commit()
+    c.close()
+
+
+def delete_llm_config(cid):
+    c = _conn()
+    c.execute('DELETE FROM llm_configs WHERE id=?', (cid,))
+    c.commit()
+    c.close()
+
+
+def set_default_llm_config(cid):
+    c = _conn()
+    c.execute('UPDATE llm_configs SET is_default=0')
+    c.execute('UPDATE llm_configs SET is_default=1 WHERE id=?', (cid,))
+    c.commit()
+    c.close()
+
+
+def llm_config_to_dict(row):
+    """把配置行转成 llm.py 可用的 dict（不含数据库元信息）"""
+    return {
+        'base_url': row['base_url'],
+        'api_key': row['api_key'],
+        'model': row['model'],
+        'temperature': row['temperature'],
+        'timeout': row['timeout'],
+        'vision': bool(row['vision']),
+    }