docs: reserve seam for complete capabilities

packages/client/ui-slots/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-slots/README.md
-README.md: bb489dea0c3848cf3d501dcf095a65fe1cef9ef6
-README.zh.md: 8b10ddf2d974c3054b5e086a302cd8f84dca9667
+README.md: 7ee2a3d22c2a41b0e5c356c52d383a047cf99029
+README.zh.md: 793bb2d1f77e02e34a41fab16b2c2c64b78744dc

packages/client/ui-slots/README.md

@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Slot registry pure core, slot terminal design: SlotMap declaration merging, the single `register` composition API on SlotCore, the four-share component-props type family, the store-seat type family, and the renderer install-seam contract. React types only at runtime — the package is React-free and cordis-free.
+Slot registry pure core, slot terminal design: SlotMap declaration merging, the single `register` composition API on SlotCore, the four-share component-props type family, the store-seat type family, and the renderer installation contract. React types only at runtime — the package is React-free and cordis-free.
 
 One `register({ name, children?, store?, inject?, ...kind }, Component)` call contributes a component into a declared slot and, in the same breath, declares child slots (declaration = render authorization = runtime spec, one table), a store seat, and the registrant's business face. The component is checked at the call site against `ComposedProps` — the intersection of four shares, each derived from its single source of truth:
 
@@ -17,9 +17,9 @@ Chain-kind slots invert keyed routing — entries self-nominate instead of the d
 
 The standard-kit interfaces (`SessionStandardProps`, `GlobalStandardProps`) are declared empty here and merged by the runtime package (same declare-merge pattern as SlotMap keys). The renderer binds the runtime's session and workspace observable sources into selector hooks. Inject factory parameters derive from the declaration (`InjectParams`): session slots get `sessionId`, a declared store appends baked `actions`, nothing else — data access lives in the apply closure's ctx.
 
-The store family (`defineStore` spec in / `StoreHandle<T, A>` out) types the store seat: `init` infers the state schema, `actions` is the complete draft-transform write set, `BakedActions` strips the draft parameter into the callbacks components and inject factories receive. The `defineStore` value implementation lives in the runtime package (the engine's home) and satisfies the `DefineStore` contract exported here. Engine products and the renderer host contract carry bare snapshot sources (`getSnapshot`/`subscribe`), never React hooks — hook binding is the render machinery's side of the seam; only the props-contract hook type (`SnapshotSelectorHook`) lives here.
+The store family (`defineStore` spec in / `StoreHandle<T, A>` out) types the store seat: `init` infers the state schema, `actions` is the complete draft-transform write set, `BakedActions` strips the draft parameter into the callbacks components and inject factories receive. The `defineStore` value implementation lives in the runtime package (the engine's home) and satisfies the `DefineStore` contract exported here. Engine products and the renderer host contract carry bare snapshot sources (`getSnapshot`/`subscribe`), never React hooks — hook binding belongs to the render machinery; only the props-contract hook type (`SnapshotSelectorHook`) lives here.
 
-`SlotCore` seeds the a-priori `'root'` slot at construction and enforces load-time validation (undeclared-slot registration, duplicate child declaration, one shared handle under two scopes, a chain registration without `select` — all throw at register). An entry's disposer collapses its declared child slots recursively: ledger rows, contributions, and store mounts die on one lifecycle axis. Each key also carries a declaration epoch that advances only on declaration and collapse; the runtime uses it for [`ctx.slots.inject`](../runtime/README.md#slot-declaration-injection), independently from ordinary entry versions. `renderer.ts` carries the install seam (`SlotRenderer`, `SlotRendererHost`) plus `StaleAuthorizationError`/`SlotOwnershipError`; the implementation lives in web-react, the installation in the shell boot.
+`SlotCore` seeds the a-priori `'root'` slot at construction and enforces load-time validation (undeclared-slot registration, duplicate child declaration, one shared handle under two scopes, a chain registration without `select` — all throw at register). An entry's disposer collapses its declared child slots recursively: ledger rows, contributions, and store mounts die on one lifecycle axis. Each key also carries a declaration epoch that advances only on declaration and collapse; the runtime uses it for [`ctx.slots.inject`](../runtime/README.md#slot-declaration-injection), independently from ordinary entry versions. `renderer.ts` carries the installation contract (`SlotRenderer`, `SlotRendererHost`) plus `StaleAuthorizationError`/`SlotOwnershipError`; the implementation lives in web-react, the installation in the shell boot.
 
 ## Model Experience
 

packages/client/ui-slots/README.zh.md

@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-Slot 注册表纯核心、slot 终端设计：SlotMap 声明合并、SlotCore 上唯一的 `register` 组合 API、四 share 组件 props 类型家族、store seat 类型家族，以及 renderer 安装 seam 约定。只使用 React 类型；该包不依赖 React，也不依赖 Cordis。
+Slot 注册表纯核心、slot 终端设计：SlotMap 声明合并、SlotCore 上唯一的 `register` 组合 API、四 share 组件 props 类型家族、store seat 类型家族，以及 renderer 安装约定。只使用 React 类型；该包不依赖 React，也不依赖 Cordis。
 
 一次 `register({ name, children?, store?, inject?, ...kind }, Component)` 调用会向已声明 slot 贡献一个组件，同时声明子 slot（声明 = 渲染授权 = 运行时规范，三者共用一张表）、store seat 以及注册方的业务表层。组件会在调用点依据 `ComposedProps` 接受检查；该类型是四个 share 的交集，每个 share 都从各自的唯一真源派生：
 
@@ -17,9 +17,9 @@ chain-kind slot 会反转键控路由：条目自行提名，而不是由分发
 
 标准工具包接口（`SessionStandardProps`、`GlobalStandardProps`）在这里声明为空，由 runtime 包合并（与 SlotMap key 相同的 declare-merge 模式）。renderer 会把运行时 Session 和 Workspace observable source 绑定为 selector hook。Inject factory 参数从声明派生（`InjectParams`）：Session slot 获得 `sessionId`；声明 store 时追加 baked `actions`；没有其他参数，数据访问位于 apply 闭包的 ctx 中。
 
-store 家族（输入 `defineStore` 规范／输出 `StoreHandle<T, A>`）为 store seat 建模：`init` 推断状态 schema；`actions` 是完整的 draft-transform 写入集合；`BakedActions` 移除 draft 参数，成为组件和 inject factory 收到的回调。`defineStore` 值实现位于 runtime 包（引擎所属位置），并满足这里导出的 `DefineStore` 约定。引擎产物与 renderer host 约定携带裸快照 source（`getSnapshot`／`subscribe`），绝不携带 React hook；hook 绑定属于渲染机制这一侧的 seam，只有 props 约定 hook 类型（`SnapshotSelectorHook`）位于这里。
+store 家族（输入 `defineStore` 规范／输出 `StoreHandle<T, A>`）为 store seat 建模：`init` 推断状态 schema；`actions` 是完整的 draft-transform 写入集合；`BakedActions` 移除 draft 参数，成为组件和 inject factory 收到的回调。`defineStore` 值实现位于 runtime 包（引擎所属位置），并满足这里导出的 `DefineStore` 约定。引擎产物与 renderer host 约定携带裸快照 source（`getSnapshot`／`subscribe`），绝不携带 React hook；hook 绑定属于渲染机制，只有 props 约定 hook 类型（`SnapshotSelectorHook`）位于这里。
 
-`SlotCore` 在构造时预置 `'root'` slot，并强制执行加载时验证（注册未声明 slot、重复声明子项、在两个 scope 下使用同一个共享 handle、chain 注册缺少 `select`，这些情况都在 register 时抛出）。条目的 disposer 会递归移除其声明的子 slot：账本行、贡献和 store 挂载都会随同一生命周期结束而移除。每个 key 还携带一个 declaration epoch（声明代次），它只在声明与移除时递增；运行时将其用于 [`ctx.slots.inject`](../runtime/README.md#slot-declaration-injection)，且与普通条目版本相互独立。`renderer.ts` 携带安装 seam（`SlotRenderer`、`SlotRendererHost`）以及 `StaleAuthorizationError`／`SlotOwnershipError`；实现在 web-react 中，安装则在外壳启动中完成。
+`SlotCore` 在构造时预置 `'root'` slot，并强制执行加载时验证（注册未声明 slot、重复声明子项、在两个 scope 下使用同一个共享 handle、chain 注册缺少 `select`，这些情况都在 register 时抛出）。条目的 disposer 会递归移除其声明的子 slot：账本行、贡献和 store 挂载都会随同一生命周期结束而移除。每个 key 还携带一个 declaration epoch（声明代次），它只在声明与折叠时递增；运行时将其用于 [`ctx.slots.inject`](../runtime/README.md#slot-declaration-injection)，且与普通条目版本相互独立。`renderer.ts` 携带安装约定（`SlotRenderer`、`SlotRendererHost`）以及 `StaleAuthorizationError`／`SlotOwnershipError`；实现在 web-react 中，安装则在外壳启动中完成。
 
 ## 模型体验
 

packages/client/ui-slots/src/index.ts

@@ -211,7 +211,7 @@ export type MatchedShare<E extends SlotEntryDef, M> =
 /**
  * Conversation-session selector hook alias for props contracts. Wide by
  * default at this dependency-inverted layer; the runtime narrows at its
- * export seam (`UseSession<ConversationSnapshot>`).
+ * export outlet (`UseSession<ConversationSnapshot>`).
  */
 export type UseSession<Snap extends object = object> = SnapshotSelectorHook<Snap>
 
@@ -392,7 +392,7 @@ type BaseOptions<K extends keyof SlotMap & string, D extends ChildrenDecl, H, M
 
 /**
  * One stored registration, as recorded by the core and read by the render
- * machinery (type-erased at this boundary; the register seam already proved
+ * machinery (type-erased at this boundary; the registration contract already proved
  * the shares against the component).
  */
 export interface StoredEntry {
@@ -467,7 +467,7 @@ interface SlotRecord {
 const NO_ENTRIES: readonly StoredEntry[] = Object.freeze([])
 
 /**
- * Pure slot registry (no cordis; event emission and the renderer install seam
+ * Pure slot registry (no cordis; event emission and the renderer installation contract
  * live in the runtime Service wrapper).
  *
  * The 'root' slot is the one a-priori declaration, seeded at construction

packages/client/ui-slots/src/renderer.ts

@@ -34,11 +34,11 @@ export interface HostObservable<T> {
 }
 
 /**
- * Type-erased store instance face at the render seam (the typed twin is
+ * Type-erased store instance face at the render boundary (the typed twin is
  * {@link StoreInstance}): a bare snapshot source plus the draft-stripped
- * action callbacks. No React hook crosses this seam — the render machinery
+ * action callbacks. No React hook crosses this boundary — the render machinery
  * binds `useStore` from the source at its own side (cached per instance);
- * typing lands at the component seam via {@link PropsStore}.
+ * typing lands at the component boundary via {@link PropsStore}.
  */
 export interface StoreInstanceLike {
   getSnapshot(): unknown
@@ -54,7 +54,7 @@ export interface StoreInstanceLike {
 /**
  * Per-session standard props resolved per session id (identity-stable per
  * session scope; a recreated scope yields a new info). Plugins contribute
- * members through the runtime `sessions.provide` seam; the render side binds
+ * members through the runtime `sessions.provide` contract; the render side binds
  * every `hooks` source into a `use<Name>` selector hook (hooks never appear
  * on the host contract) and spreads `props` verbatim. The runtime itself
  * contributes the first entry (`'session'` → `useSession`).
@@ -161,7 +161,7 @@ export interface SlotRendererHost {
   locale?: LocaleFace | undefined
 }
 
-/** The install seam: runtime owns install()/renderSlot(); web-react implements rendering. */
+/** The installation contract: runtime owns install()/renderSlot(); web-react implements rendering. */
 export interface SlotRenderer {
   /**
    * Render the root slot tree over the host surface (the only ctx-level entry).