✨ Feat: Allow setting agent as main agent via configuration

[xuyaqist]

新增高级设置

默认为主智能体

[Copilot]

Pull request overview

This PR introduces an is_main_agent flag for tenant agents, allowing the frontend to configure whether an agent is treated as a “main agent” (defaulting to true). It spans database schema, backend models/service logic, and frontend types/state/UI (including a new “Advanced Settings” modal).

Changes:

• Add is_main_agent column to ag_tenant_agent_t with NOT NULL DEFAULT TRUE, plus baseline schema + migration.
• Plumb is_main_agent through backend Pydantic models and agent create/export/import/update flows.
• Update frontend typing, store defaults/dirty-checking, save payloads, and introduce an Advanced Settings modal with i18n strings.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test/backend/database/test_agent_db.py	Updates test fixture defaults to include is_main_agent = True.
frontend/types/agentConfig.ts	Adds is_main_agent to agent types and update payload typing.
frontend/stores/agentConfigStore.ts	Adds defaulting, mapping, and dirty-check logic for is_main_agent.
frontend/services/agentConfigService.ts	Adds is_main_agent to update payload + response mapping default.
frontend/public/locales/zh/common.json	Adds zh translations for “Advanced Settings” and “Main Agent” flag.
frontend/public/locales/en/common.json	Adds en translations for “Advanced Settings” and “Main Agent” flag.
frontend/hooks/agent/useSaveGuard.ts	Includes is_main_agent in save/update request payload.
frontend/app/[locale]/agents/components/AgentSelectorHeader.tsx	Includes is_main_agent when copying/creating agents from detail.
frontend/app/[locale]/agents/components/agentManage/AgentList.tsx	Includes is_main_agent when copying/creating agents from list.
frontend/app/[locale]/agents/components/agentInfo/AgentGenerateDetail.tsx	Adds Advanced Settings modal UI and wires is_main_agent into the edit flow.
deploy/sql/migrations/v2.4.0_0720_add_agent_is_main_agent.sql	Adds migration to introduce is_main_agent with default TRUE.
deploy/sql/init.sql	Updates baseline schema to include is_main_agent + column comment.
backend/services/agent_service.py	Includes is_main_agent in create/update/export/import agent payloads.
backend/database/db_models.py	Adds ORM column is_main_agent with default True, non-nullable.
backend/database/agent_db.py	Ensures is_main_agent defaults on create and is returned in create response.
backend/consts/model.py	Adds is_main_agent to AgentInfoRequest and export/import model.

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