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-saas/migrations/20260412000001_industry_config.sql

@@ -0,0 +1,34 @@
+-- 行业配置表
+CREATE TABLE IF NOT EXISTS industries (
+    id TEXT PRIMARY KEY,                    -- "healthcare" | "education" | "garment" | "ecommerce"
+    name TEXT NOT NULL,                     -- "医疗行政"
+    icon TEXT NOT NULL DEFAULT '',          -- emoji 或图标标识
+    description TEXT NOT NULL DEFAULT '',   -- 行业描述
+    keywords JSONB NOT NULL DEFAULT '[]',   -- 行业关键词列表
+    system_prompt TEXT NOT NULL DEFAULT '',  -- 行业 system prompt 片段
+    cold_start_template TEXT NOT NULL DEFAULT '', -- 冷启动问候模板
+    pain_seed_categories JSONB NOT NULL DEFAULT '[]', -- 痛点种子类别
+    skill_priorities JSONB NOT NULL DEFAULT '[]',   -- 技能推荐优先级
+    status TEXT NOT NULL DEFAULT 'active',  -- "active" | "disabled"
+    source TEXT NOT NULL DEFAULT 'builtin', -- "builtin" | "admin"
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- 用户-行业关联表（多对多）
+CREATE TABLE IF NOT EXISTS account_industries (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    account_id TEXT NOT NULL REFERENCES accounts(id) ON DELETE CASCADE,
+    industry_id TEXT NOT NULL REFERENCES industries(id) ON DELETE CASCADE,
+    is_primary BOOLEAN NOT NULL DEFAULT false,
+    custom_config JSONB,                    -- Admin 可覆盖的配置
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    CONSTRAINT uq_account_industry UNIQUE (account_id, industry_id)
+);
+
+-- 索引
+CREATE INDEX IF NOT EXISTS idx_account_industries_account ON account_industries(account_id);
+CREATE INDEX IF NOT EXISTS idx_account_industries_industry ON account_industries(industry_id);
+CREATE INDEX IF NOT EXISTS idx_industries_status ON industries(status);
+CREATE INDEX IF NOT EXISTS idx_industries_source ON industries(source);

crates/zclaw-saas/migrations/down/20260412000001_industry_config.sql

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+DROP TABLE IF EXISTS account_industries;
+DROP TABLE IF EXISTS industries;