docs: fix review findings — support-group summary row, smoke-prose export-shape claims

The packages/README.md group table still described support/ as holding
the stdio UI; and three prose sites credited the keyless smokes with
guarding the app export shape, which a bundle without inject cannot do
(a stray default boots rather than crashes) — the shape is pinned by
the stdio-agent unit suite's explicit unwrapExports assertion; the
smokes prove the composed tree boots.

examples/coding-agent/tests/keyless-smoke.e2e.ts

@@ -18,9 +18,10 @@ import { afterEach, describe, expect, it } from 'vitest'
  * `apply()` only requires a key to be PRESENT (it does not validate it and only
  * uses it when a stream actually starts), so a dummy key lets the tree boot
  * while the absence of any prompt guarantees no network call. The value is the
- * real-Loader-path guard for the app + bundle + UI plugin export shapes (a broken
- * `export default` that drops `inject`/`Config` would crash here — see postmortem
- * 0001), complementing coding-agent's with-key e2e suites which prove the real
+ * real-Loader-path guard that the composed tree boots (see postmortem 0001;
+ * the app carries no `inject`, so its export SHAPE is pinned by the stdio-agent
+ * unit suite's unwrap assertion, not by a crash here),
+ * complementing coding-agent's with-key e2e suites which prove the real
  * product.
  */
 

examples/echo-agent/tests/echo.e2e.ts

@@ -14,10 +14,11 @@ import { afterEach, describe, expect, it } from 'vitest'
  * This is the guard the per-file unit suite structurally cannot be: it drives
  * the `@deepseek-ai/dsh-stdio-agent` app plugin, the `@deepseek-ai/dsh-agent-core`
  * bundle it loads, the app's in-package readline UI module, AND the
- * example-local `mock-llm.ts` / `echo-tool.ts` through their REAL load path, so
- * a broken plugin export shape (a stray `export default` that `unwrapExports`
- * would collapse, dropping `inject`/`Config`) fails here even though hand-mounted
- * unit tests stay green (see docs/postmortem/0001). It needs no API key — the
+ * example-local `mock-llm.ts` / `echo-tool.ts` through their REAL load path
+ * (see docs/postmortem/0001). The app itself carries no `inject`, so a stray
+ * `export default` would boot rather than crash here — the export SHAPE is
+ * pinned by the explicit unwrap assertion in the stdio-agent unit suite; this
+ * smoke proves the composed tree actually runs. It needs no API key — the
  * `mock-echo` adapter never touches the network — so it runs in the default e2e
  * gate.
  *