docs(notes): drop the TUI clauses the package removal made stale

ed30088adb deleted packages/ui/tui, so the two present-tense clauses naming
it in notes this branch already rewrites no longer describe HEAD. The
operative claim — the surfaces beyond the web row needed no change — stands
without naming the package. Pair hashes re-recorded.

Also anchor tool-row-styles.spec.ts's rule lookup at a rule boundary, so a
compound selector landing above a base rule fails loud instead of reading
the wrong declaration block.

packages/client/ui-conversation/tests/tool-row-styles.spec.ts

@@ -13,7 +13,10 @@ const css = readFileSync(fileURLToPath(new URL('../src/client/chat/ToolRow.modul
 const declarationText = css.replace(/\/\*[\s\S]*?\*\//g, ' ')
 
 function declarations(selector: string): string[] {
-  const rule = new RegExp(`\\${selector}\\s*\\{([^{}]*)\\}`).exec(declarationText)
+  // Anchored at a rule boundary: an unanchored match would silently read a
+  // compound rule that merely contains the selector (`.root:hover .summarySuffix`)
+  // if one ever lands above the base rule.
+  const rule = new RegExp(`(?:^|\\})\\s*\\${selector}\\s*\\{([^{}]*)\\}`).exec(declarationText)
   if (rule === null) throw new Error(`ToolRow.module.css has no \`${selector}\` rule`)
   return (rule[1] ?? '').split(';').map(part => part.trim()).filter(Boolean)
 }