feat(industry): Phase 1 行业配置基础 — 数据模型 + 四行业内置配置 + ButlerRouter 动态关键词

- 新增 SaaS industry 模块 (types/service/handlers/mod/builtin)
- 4 行业内置配置: healthcare/education/garment/ecommerce
- 数据库迁移: industries + account_industries 表
- 8 个 API 端点 (CRUD + 用户行业关联)
- ButlerRouter 改造: 支持 IndustryKeywordConfig 动态注入
- 12 个测试全通过 (含动态行业分类测试)

crates/zclaw-runtime/src/lib.rs

@@ -34,3 +34,4 @@ pub use zclaw_growth::EmbeddingClient;
 pub use zclaw_growth::LlmDriverForExtraction;
 pub use compaction::{CompactionConfig, CompactionOutcome};
 pub use prompt::{PromptBuilder, PromptContext, PromptSection};
+pub use middleware::butler_router::{ButlerRouterMiddleware, IndustryKeywordConfig};