docs: purge chain-of-thought leakage from prose

Delete design-session citations (decision/audit/plan ordinals, stack
positions), change narration, review choreography, and reviewer-addressed
justification from comments, JSDoc, docs, READMEs, Agent Notes, tests, and
generator templates; restate every affected fact as current-state contract
prose. Fix generated docs at their sources and regenerate the catalogs and
cordis-surface regions; re-paste type-equiv blocks; update every bilingual
counterpart and re-record the pairs. Record the citation rule in the
committed-artifact-citations Agent Note.

packages/core/tools/src/index.ts

@@ -857,8 +857,8 @@ export class ToolRegistry extends Service {
    * bound to a request. Harmless while one published backend exists — both
    * reads return the same flavor — but a reload that swapped in a second
    * language between them would hand a program written against one SDK to the
-   * other. Binding it belongs to the PR that publishes that backend, which is
-   * also the first point it can be tested; recorded in the
+   * other. Binding it is deferred until a second backend ships (the first
+   * point it is testable); rationale in the
    * [language-dispatch note](../../../../.agents/notes/implemented/feature/2026-07-31-code-mode-language-dispatch.md).
    */
   private requireCodeRuntime(): CodeRuntime {