fix: refresh stale technical content in agents, rules, and skills (#2168)

Several published examples contained APIs that no longer exist, code that
does not run, or model versions that drifted from reality:

- agents/performance-optimizer.md used the web-vitals v3 API
  (getCLS/getFID/getLCP/getFCP/getTTFB) and reported FID. web-vitals v4
  renamed the imports to onCLS/onINP/onLCP/onFCP/onTTFB and FID was
  replaced by INP (target < 200ms)
- rules/common/performance.md pinned stale model versions in the
  model-selection guidance; refresh to the versions the repo itself uses
  (agent.yaml pins claude-opus-4-6) and add the PowerShell variant for
  MAX_THINKING_TOKENS next to the bash export
- skills/python-patterns/SKILL.md: both get_value examples referenced
  default_value without declaring the parameter (NameError); add
  default_value: Any = None to the EAFP and LBYL signatures
- skills/frontend-patterns/SKILL.md: the custom useQuery example rebuilt
  refetch whenever callers passed inline fetchers/options, re-triggering
  the effect after every state update (infinite fetch loop). Keep the
  latest fetcher/options in refs so refetch stays referentially stable.
  The PASS-labelled useMemo example mutated its input with in-place sort;
  copy before sorting
- skills/coding-standards/SKILL.md repeated the same PASS-labelled
  in-place-sort-in-useMemo example; same fix
- rules/typescript/security.md used a vendor-specific OPENAI_API_KEY in
  generic guidance; switch to a neutral API_KEY

Every hand-maintained copy of the affected content is synced in the same
change: locale mirrors (ja-JP, ko-KR, pt-BR, tr, zh-CN, zh-TW - each only
where it carries the affected file) and the .agents/.kiro/.cursor harness
mirrors. Two structural divergences are left alone and noted here:
.kiro/steering/performance.md has no extended-thinking control list to
carry the PowerShell variant, and docs/zh-TW/rules/performance.md keeps an
older condensed thinking section without the budget-cap line.
rules/zh/performance.md is intentionally untouched - the rules/zh tree is
being retired in a separate change

.kiro/skills/coding-standards/SKILL.md

@@ -398,8 +398,9 @@ export async function searchMarkets(
 import { useMemo, useCallback } from 'react'
 
 // PASS: GOOD: Memoize expensive computations
+// Copy before sorting - Array.prototype.sort mutates in place
 const sortedMarkets = useMemo(() => {
-  return markets.sort((a, b) => b.volume - a.volume)
+  return [...markets].sort((a, b) => b.volume - a.volume)
 }, [markets])
 
 // PASS: GOOD: Memoize callbacks

.kiro/skills/frontend-patterns/SKILL.md

@@ -171,28 +171,41 @@ export function useQuery<T>(
   const [error, setError] = useState<Error | null>(null)
   const [loading, setLoading] = useState(false)
 
+  // Keep the latest fetcher/options in refs so refetch stays referentially
+  // stable even when callers pass inline functions and object literals.
+  // Without this, every render creates a new refetch, and the effect below
+  // re-runs after each state update - an infinite fetch loop.
+  const fetcherRef = useRef(fetcher)
+  const optionsRef = useRef(options)
+  useEffect(() => {
+    fetcherRef.current = fetcher
+    optionsRef.current = options
+  })
+
   const refetch = useCallback(async () => {
     setLoading(true)
     setError(null)
 
     try {
-      const result = await fetcher()
+      const result = await fetcherRef.current()
       setData(result)
-      options?.onSuccess?.(result)
+      optionsRef.current?.onSuccess?.(result)
     } catch (err) {
       const error = err as Error
       setError(error)
-      options?.onError?.(error)
+      optionsRef.current?.onError?.(error)
     } finally {
       setLoading(false)
     }
-  }, [fetcher, options])
+  }, [])
+
+  const enabled = options?.enabled !== false
 
   useEffect(() => {
-    if (options?.enabled !== false) {
+    if (enabled) {
       refetch()
     }
-  }, [key, refetch, options?.enabled])
+  }, [key, enabled, refetch])
 
   return { data, error, loading, refetch }
 }
@@ -297,8 +310,9 @@ export function useMarkets() {
 
 ```typescript
 // PASS: useMemo for expensive computations
+// Copy before sorting - Array.prototype.sort mutates in place
 const sortedMarkets = useMemo(() => {
-  return markets.sort((a, b) => b.volume - a.volume)
+  return [...markets].sort((a, b) => b.volume - a.volume)
 }, [markets])
 
 // PASS: useCallback for functions passed to children

.kiro/steering/performance.md

@@ -12,12 +12,12 @@ description: Performance optimization guidelines including model selection strat
 - Pair programming and code generation
 - Worker agents in multi-agent systems
 
-**Claude Sonnet 4.5** (Best coding model):
+**Claude Sonnet 4.6** (Best coding model):
 - Main development work
 - Orchestrating multi-agent workflows
 - Complex coding tasks
 
-**Claude Opus 4.5** (Deepest reasoning):
+**Claude Opus 4.6** (Deepest reasoning):
 - Complex architectural decisions
 - Maximum reasoning requirements
 - Research and analysis tasks