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-workspace/src/client/WorkspaceBrowser.tsx

@@ -150,8 +150,8 @@ function SessionTree({
         )}
         {groups.map(group => (
           // Group section: header row + expanded top-level session rows. The
-          // inter-group breathing room (former flat-list batch separator)
-          // is the section's own margin (WorkspaceBrowser.module.css).
+          // inter-group breathing room is the section's own margin
+          // (WorkspaceBrowser.module.css).
           <div key={group.key} className={css.groupSection}>
             <ProjectRowItem
               group={group}

packages/client/ui-workspace/src/client/rows/Rows.tsx

@@ -346,9 +346,9 @@ export function SessionNodeItem({ node, currentId, now, onOpen, onRename, onFork
   const statuses = sessionStatuses(node, t)
   const primaryStatus = statuses[0]
   const [menuOpen, setMenuOpen] = useState(false)
-  // Archive replaces the former Delete placeholder: it hides the row through
-  // the registry-global archive set and never touches the session log, so it
-  // is not styled as destructive and needs no confirmation dialog.
+  // Archive hides the row through the registry-global archive set and never
+  // touches the session log, so it is not styled as destructive and needs no
+  // confirmation dialog.
   const sessionMenuItems = [
     { id: 'rename', label: t('rename'), icon: <IconEditOutline16 /> },
     { id: 'fork', label: t('menu.fork'), icon: <IconBranchOutline16 /> },