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-context/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "ias-context"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+ias-common = { path = "../ias-common" }
+axum = "0.8.9"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+reqwest = { version = "0.12", default-features = false, features = [
+    "json",
+    "rustls-tls",
+] }
+sqlx = { version = "0.9.0", features = [
+    "runtime-tokio",
+    "tls-rustls",
+    "postgres",
+    "chrono",
+] }
+chrono = { version = "0.4", features = ["serde"] }
+anyhow = "1"