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/client/ui-models/tests/components.spec.tsx

@@ -655,7 +655,7 @@ describe('ModelsSection', () => {
     expect((ids[0] as HTMLInputElement).value).toBe('deepseek-v4-flash')
 
     // An id that is only whitespace is as absent as an empty one, and a padded
-    // id no longer slips past the duplicate check against its own twin.
+    // id is a duplicate of its trimmed twin.
     expect(validateDeepSeekModels([{ id: '   ' }])).toEqual({ index: 0, key: 'modelIdRequired' })
     expect(validateDeepSeekModels([{ id: 'model' }, { id: 'model ' }]))
       .toEqual({ index: 1, key: 'modelIdDuplicate' })
@@ -714,7 +714,7 @@ describe('ModelsSection', () => {
   })
 
   it('clears an inherited override with an unset op, never a whole-section replace', async () => {
-    // The old path rebuilt the whole user section to clear one inherited field.
+    // A whole-section replace would clobber sibling overrides to clear one field.
     const { replace, update, mutate } = await mountSection()
     fireEvent.click(screen.getByText(en.customized))
     const url = screen.getByLabelText<HTMLInputElement>(en.baseUrl)

packages/client/ui-models/tests/provider-form.spec.tsx

@@ -706,11 +706,11 @@ describe('hand-declared providers', () => {
   })
 
   it('scopes each card to fields a provider can actually own', async () => {
-    // Reasoning effort used to sit here. It is a per-MODEL capability and the
+    // Reasoning effort is a per-MODEL capability and the
     // models under one provider disagree about it, so a provider-scoped
-    // control could only be set to a value some of them reject — which took
-    // the whole provider out of the picker. The composer's model picker owns
-    // the choice, and a switch there records provider+model+effort together.
+    // control could only be set to a value some of them reject — which would
+    // take the whole provider out of the picker. The composer's model picker
+    // owns the choice, and a switch there records provider+model+effort together.
     const fields = () => [...document.querySelectorAll('input,select')]
       .map(el => el.getAttribute('aria-label')).filter(Boolean)
 
@@ -804,8 +804,8 @@ describe('hand-declared providers', () => {
     const routeField = screen.getByLabelText(en.customRoute)
     fireEvent.change(routeField, { target: { value: 'https://acme.test/v1' } })
 
-    // A digit-leading id used to pass every check this card makes and then
-    // fail at the credential seam with a raw regular expression: the
+    // Without this check a digit-leading id passes the card and fails at the
+    // credential seam with a raw regular expression: the
     // reference derives as `123_API_KEY`, and a credential reference is a
     // POSIX shell identifier, which cannot start with a digit.
     fireEvent.change(routeField, { target: { value: '123' } })