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/host/directory-picker-native/src/native-picker.ts

@@ -70,8 +70,8 @@ export async function pickNativeDirectory(
     // The koffi-backed IFileOpenDialog child process — the modern picker with
     // per-monitor-v2 DPI and abort support. koffi is a packaged dependency
     // whose availability the install guarantees, so there is no fallback
-    // tier: any failure surfaces as-is (the former PowerShell chain was
-    // removed — see the simplification Agent Note).
+    // tier: any failure surfaces as-is (no PowerShell fallback tier; see
+    // the simplification Agent Note).
     const pickDialog = internals.pickWin32Dialog ?? pickWin32Directory
     return await pickDialog(signal)
   }