feat: 模块统一 ias- 前缀、独立版本与内网地址支持 (0.1.7)

- 所有 Rust crate 统一加 ias- 前缀：ai → ias-ai、common → ias-common、context → ias-context、mail → ias-mail、service → ias-service、wechat → ias-wechat
- 新增 ias-main 模块承载 CLI 入口和二进制打包
- 各模块开始独立维护版本号，ias-main 0.1.7 代表整体版本
- 新增 IA_WEB_INTERNAL_URL 环境变量，版本通知同时发送公网和内网链接
- 将已有升级日志翻译为中文
- ias_upgrade_logs 新增 modules JSONB 字段
- 新增 VERSION 文件和 CHANGELOG.md
- 新增 AGENTS.md 项目规则文件

ias-service/migrations/20260706010000_context_management.sql

@@ -0,0 +1,66 @@
+CREATE TABLE ias_long_term_memories (
+    id BIGSERIAL PRIMARY KEY,
+    scope_key VARCHAR(768) NOT NULL,
+    channel VARCHAR(64) NOT NULL,
+    account_id VARCHAR(255) NOT NULL,
+    from_user_id VARCHAR(255) NOT NULL,
+    context_label TEXT,
+    content TEXT NOT NULL,
+    metadata TEXT NOT NULL DEFAULT '{}',
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    deleted_at TIMESTAMP
+);
+
+CREATE INDEX idx_ias_long_term_memories_scope_updated
+    ON ias_long_term_memories(scope_key, updated_at DESC)
+    WHERE deleted_at IS NULL;
+
+CREATE TABLE ias_context_sessions (
+    id BIGSERIAL PRIMARY KEY,
+    scope_key VARCHAR(768) NOT NULL,
+    channel VARCHAR(64) NOT NULL,
+    account_id VARCHAR(255) NOT NULL,
+    from_user_id VARCHAR(255) NOT NULL,
+    context_label TEXT,
+    started_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    last_message_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    ended_at TIMESTAMP,
+    end_reason VARCHAR(64),
+    summary TEXT
+);
+
+CREATE INDEX idx_ias_context_sessions_active
+    ON ias_context_sessions(scope_key, started_at DESC)
+    WHERE ended_at IS NULL;
+
+CREATE INDEX idx_ias_context_sessions_ended
+    ON ias_context_sessions(scope_key, ended_at DESC)
+    WHERE ended_at IS NOT NULL;
+
+CREATE TABLE ias_context_messages (
+    id BIGSERIAL PRIMARY KEY,
+    session_id BIGINT NOT NULL REFERENCES ias_context_sessions(id) ON DELETE CASCADE,
+    role VARCHAR(32) NOT NULL,
+    content TEXT NOT NULL,
+    tool_call_id VARCHAR(255),
+    tool_calls TEXT,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_ias_context_messages_session
+    ON ias_context_messages(session_id, id);
+
+CREATE TABLE ias_context_summaries (
+    id BIGSERIAL PRIMARY KEY,
+    scope_key VARCHAR(768) NOT NULL,
+    summary_type VARCHAR(32) NOT NULL,
+    source_session_id BIGINT REFERENCES ias_context_sessions(id) ON DELETE SET NULL,
+    content TEXT NOT NULL,
+    started_at TIMESTAMP,
+    ended_at TIMESTAMP,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_ias_context_summaries_latest
+    ON ias_context_summaries(scope_key, summary_type, created_at DESC);