chore(spec): 按 §10 四步 resync 重生成本 sweep 的两张参考页

PR #6224(#5553 / #6136)改了 build-docs 的模块描述行布局与裸路径链接改写,
并重写了全部参考页。本分支是后落地方,故按四步走:merge main → 重建 →
check:generated 判定 → --fix 只重生成被证实陈旧的一项。

落点仍是本 sweep 的两张页(os-regen 合并驱动把它们记进 os-regen-pending):
shared/expression.mdx 与 api/endpoint.mdx。新渲染器收掉了行间空行,方言表
因此首次渲染成一张真正的 markdown 表,而不是被空行拆散的六行。

内容核对:方言表 = cel / cron / template(无 js);endpoint 的 type /
target / ApiMapping.transform 三行描述完整存活。

Co-authored-by: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011M7UwH25Unfi73UHim7ajY

Author: claude

content/docs/references/api/endpoint.mdx

@@ -6,7 +6,6 @@ description: Endpoint protocol schemas
 {/* ⚠️  AUTO-GENERATED — DO NOT EDIT. Run build-docs.ts to regenerate. Hand-written docs live in the module folders under content/docs/. */}
 
 API Mapping Schema
-
 Transform input/output data.
 
 <Callout type="info">

content/docs/references/shared/expression.mdx

@@ -8,47 +8,31 @@ description: Expression protocol schemas
 # Expression Protocol
 
 Canonical wire format for all "expression"-shaped metadata across ObjectStack
-
 (formula fields, predicates, conditions, criteria, visibility rules, seed
-
 dynamic values, …).
 
-The persisted form is `\{ dialect, source \}` (and, after `objectstack
-
-compile` normalization, `\{ dialect, ast \}`). String-only shorthand is
-
+The persisted form is `{ dialect, source }` (and, after `objectstack
+compile` normalization, `{ dialect, ast }`). String-only shorthand is
 accepted at *input* time for developer ergonomics; build emits the canonical
-
 envelope.
 
 ## Dialects
 
 | dialect | engine | use |
-
 |:---|:---|:---|
-
 | `cel`      | `@objectstack/formula` (cel-js + ObjectStack stdlib) | formulas, predicates, seed dynamic values |
-
 | `cron`     | `cron-parser` | job schedules |
-
-| `template` | `\{\{var\}\}` interpolation at evaluate time (same variable scope as CEL) | notification subjects/bodies, `titleFormat`, prompt templates |
+| `template` | `{{var}}` interpolation at evaluate time (same variable scope as CEL) | notification subjects/bodies, `titleFormat`, prompt templates |
 
 Those three are the whole list — it is exactly the `ExpressionDialect` enum
-
 below. Procedural JavaScript is **not** a dialect: it is the L2 authoring
-
-surface, the sandboxed, capability-gated `ScriptBody \{ language: 'js' \}` in
-
+surface, the sandboxed, capability-gated `ScriptBody { language: 'js' }` in
 hook/action bodies. A `js` row stood in this table long after the dialect was
-
 retired in #3278 (ADR-0058 addendum); `ExpressionSchema` rejects
-
 `dialect: 'js'`.
 
 SQL fragments (analytics joins, partial indexes) are intentionally **not**
-
 routed through this schema — they stay driver-native because their security
-
 posture and portability story differ.
 
 See also: content/docs/concepts/north-star.mdx §8 "No private expression DSL"