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/mcp/mcp-client/src/tools.ts

@@ -258,9 +258,8 @@ function createExecutor(
     }
 
     // Trust boundary: the SDK's return type erases to `any[]` due to the
-    // union of CallToolResult | CompatibilityCallToolResult. We process each
-    // element defensively in extractText (reading only .type/.text/.mimeType
-    // with optional fallbacks).
+    // union of CallToolResult | CompatibilityCallToolResult; extractText
+    // validates each element.
     const content = result.content as unknown as JsonValue[]
     const text = extractText(content, rawName)
 

packages/mcp/mcp-client/src/transport.ts

@@ -40,9 +40,8 @@ export function createTransport(config: Config): Transport {
     case 'streamable-http':
       // The MCP SDK's StreamableHTTPClientTransport has optional callback
       // properties typed without `| undefined` (exactOptionalPropertyTypes
-      // mismatch with the Transport interface). The cast is safe — the SDK
-      // constructed the object, it simply doesn't declare the optionals
-      // strictly enough for our tsconfig.
+      // mismatch with the Transport interface); the SDK constructed the
+      // object, so the cast records only that widening.
       return new StreamableHTTPClientTransport(
         new URL(config.url),
         { requestInit: { headers: config.headers } },