Remove Anthropic API key authentication support

API key auth only provides short-lived session tokens (8hrs or until
session restart) with no refresh mechanism, unlike OAuth which persists
via .credentials.json. Remove the non-functional API key settings UI
and all supporting code (frontend state, Tauri commands, keyring
storage, container env var injection, and fingerprint-based recreation
checks) to avoid user confusion.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src/components/settings/ApiKeyInput.tsx

@@ -1,68 +1,10 @@
-import { useState } from "react";
-import { useSettings } from "../../hooks/useSettings";
-
 export default function ApiKeyInput() {
-  const { hasKey, saveApiKey, removeApiKey } = useSettings();
-  const [key, setKey] = useState("");
-  const [error, setError] = useState<string | null>(null);
-  const [saving, setSaving] = useState(false);
-
-  const handleSave = async () => {
-    if (!key.trim()) return;
-    setSaving(true);
-    setError(null);
-    try {
-      await saveApiKey(key.trim());
-      setKey("");
-    } catch (e) {
-      setError(String(e));
-    } finally {
-      setSaving(false);
-    }
-  };
-
   return (
     <div>
       <label className="block text-sm font-medium mb-1">Authentication</label>
       <p className="text-xs text-[var(--text-secondary)] mb-3">
-        Each project can use <strong>claude login</strong> (OAuth, run inside the terminal), an <strong>API key</strong>, or <strong>AWS Bedrock</strong>. Set auth mode per-project.
+        Each project can use <strong>claude login</strong> (OAuth, run inside the terminal) or <strong>AWS Bedrock</strong>. Set auth mode per-project.
       </p>
-
-      <label className="block text-xs text-[var(--text-secondary)] mb-1 mt-3">
-        API Key (for projects using API key mode)
-      </label>
-      {hasKey ? (
-        <div className="flex items-center gap-2">
-          <span className="text-sm text-[var(--success)]">Key configured</span>
-          <button
-            onClick={async () => {
-              try { await removeApiKey(); } catch (e) { setError(String(e)); }
-            }}
-            className="text-xs text-[var(--error)] hover:underline"
-          >
-            Remove
-          </button>
-        </div>
-      ) : (
-        <div className="space-y-2">
-          <input
-            type="password"
-            value={key}
-            onChange={(e) => setKey(e.target.value)}
-            placeholder="sk-ant-..."
-            className="w-full px-3 py-2 bg-[var(--bg-primary)] border border-[var(--border-color)] rounded text-sm text-[var(--text-primary)] focus:outline-none focus:border-[var(--accent)]"
-            onKeyDown={(e) => e.key === "Enter" && handleSave()}
-          />
-          <button
-            onClick={handleSave}
-            disabled={saving || !key.trim()}
-            className="px-3 py-1.5 text-xs bg-[var(--accent)] text-white rounded hover:bg-[var(--accent-hover)] disabled:opacity-50 transition-colors"
-          >
-            {saving ? "Saving..." : "Save Key"}
-          </button>
-        </div>
-      )}
-      {error && <div className="text-xs text-[var(--error)] mt-1">{error}</div>}
     </div>
   );
 }