website: fix nine review findings (generator coverage, loader facts, mode semantics)

Generator (all four structural gaps):
- harness service pages now render public properties/accessors, not just
  methods (ctx.codeRuntime.language/isolation were missing);
- the class page merges the same-named interface half, so ctx.root/baseUrl/
  events/logger/reflect/registry appear on Context (vendor root JSDoc gains
  prose alongside @experimental);
- Pick<…> heritage on a Context merge resolves to the picked class members,
  giving ctx.effect a documented signature on the Fiber page;
- {@link} tags normalize to code spans; merge sections get their own h2 so
  reflect members no longer nest under 'Static members'.

verify-website-yaml: reject the unloadable 'group:' pseudo-name (tree.import
only special-cases 'cordis:'; no builtin is registered here) and recurse into
@cordisjs/plugin-group nested entry lists instead.

Prose corrected against loader/cordis source: service.md isolation example
uses the real group plugin + group: true + the required isolate map;
config.md documents concurrent entry startup (Promise.all; order via inject)
and the real hmr defaults (root ['.'], base/ignored/debounce); events.md
fixes emit (synchronous, not parallel), bail (null/false also delegate), and
serial (stops at the first bail value).

website/zh-CN/api/harness/bash.md

@@ -23,7 +23,7 @@ Resolve a caller's BashExecRequest into a fully-specified BashExecSpec, applying
 
 - `request` — the caller's request; omitted fields get this implementation's defaults, capped fields are clamped.
 
-**Returns** the fully-specified spec to hand to {@link run}/{@link start}.
+**Returns** the fully-specified spec to hand to `run`/`start`.
 
 [Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/bash/bash/src/index.ts#L84)
 
@@ -35,7 +35,7 @@ abstract run(spec: BashExecSpec): Promise<BashRunResult>
 
 Run a command in the foreground; resolves when it finishes.
 
-- `spec` — a resolved spec from {@link resolve}, never a raw request.
+- `spec` — a resolved spec from `resolve`, never a raw request.
 
 **Returns** the outcome; nonzero exits, timeout kills, and abort kills resolve with a descriptive result rather than reject.
 
@@ -49,9 +49,9 @@ abstract start(spec: BashExecSpec): BashTask
 
 Start a background task and return its handle immediately.
 
-- `spec` — a resolved spec from {@link resolve}, never a raw request.
+- `spec` — a resolved spec from `resolve`, never a raw request.
 
-**Returns** the live task handle; completion fires {@link onTaskDone}.
+**Returns** the live task handle; completion fires `onTaskDone`.
 
 [Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/bash/bash/src/index.ts#L99)