fix: resolve SonarQube findings and Next.js Image warnings

SonarQube/SonarLint fixes:
- Remove unused imports (useMemo, PROVIDER_ENDPOINTS, updateSettings, APP_CONFIG)
- Add PropTypes validation to all components receiving props
- Fix accessibility issues (semantic buttons, ARIA attributes, form labels)
- Replace array index keys with stable identifiers
- Extract duplicate getStatusDisplay function in providers page
- Fix negated conditions for better readability
- Add node: prefix to Node.js imports in localDb.js
- Fix optional chaining in pricing lookup
- Add explanatory comments to empty catch blocks
- Consolidate duplicate OAuth flow branches
- Change parseInt to Number.parseInt
- Disable false positive rules in VS Code settings

Next.js Image fixes:
- Add style={{ width: "auto", height: "auto" }} to all Image components
- Resolves aspect ratio warnings without triggering lint issues

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/app/(dashboard)/dashboard/cli-tools/components/CodexToolCard.js

@@ -159,7 +159,7 @@ wire_api = "responses"
       <div className="flex items-center justify-between hover:cursor-pointer" onClick={onToggle}>
         <div className="flex items-center gap-4">
           <div className="size-12 flex items-center justify-center">
-            <Image src="/providers/codex.png" alt={tool.name} width={40} height={40} className="size-12 object-contain rounded-xl" onError={(e) => { e.target.style.display = "none"; }} />
+            <Image src="/providers/codex.png" alt={tool.name} width={40} height={40} className="size-12 object-contain rounded-xl" style={{ width: "auto", height: "auto" }} onError={(e) => { e.target.style.display = "none"; }} />
           </div>
           <div>
             <div className="flex items-center gap-2">