feat(plugin): 集成 WASM 插件系统到主服务并修复链路问题

- 新增 erp-plugin crate：插件管理、WASM 运行时、动态表、数据 CRUD
- 新增前端插件管理页面（PluginAdmin/PluginCRUDPage）和 API 层
- 新增插件数据迁移（plugins/plugin_entities/plugin_event_subscriptions）
- 新增权限补充迁移（为已有租户补充 plugin.admin/plugin.list 权限）
- 修复 PluginAdmin 页面 InstallOutlined 图标不存在的崩溃问题
- 修复 settings 唯一索引迁移顺序错误（先去重再建索引）
- 更新 wiki 和 CLAUDE.md 反映插件系统集成状态
- 新增 dev.ps1 一键启动脚本

crates/erp-plugin/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "erp-plugin"
+version = "0.1.0"
+edition = "2024"
+description = "ERP WASM 插件运行时 — 生产级 Host API"
+
+[dependencies]
+wasmtime = "43"
+wasmtime-wasi = "43"
+erp-core = { workspace = true }
+tokio = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+sea-orm = { workspace = true }
+uuid = { workspace = true }
+chrono = { workspace = true }
+tracing = { workspace = true }
+thiserror = { workspace = true }
+dashmap = "6"
+toml = "0.8"
+axum = { workspace = true }
+utoipa = { workspace = true }
+async-trait = { workspace = true }
+sha2 = { workspace = true }