[grade=pending] QA sprint: commit 103 at-risk files from multi-agent sprint work

Committed by Hermes autonomous QA sprint 2026-08-13.
These files were modified during the Aug 12 sprint but never committed.

dashcaddy-api/src/dns/dns-providers/registry.js

@@ -16,7 +16,7 @@ class DNSProviderRegistry {
     const instance = new adapterClass({}, {});
     const id = instance.providerId;
     if (this.providers.has(id)) {
-      console.warn(`DNS provider "${id}" already registered, overwriting`);
+      process.stderr.write(`[DNS Registry] Provider "${id}" already registered, overwriting\n`);
     }
     this.providers.set(id, adapterClass);
   }
@@ -88,7 +88,7 @@ class DNSProviderRegistry {
           }
         }
       } catch (err) {
-        console.error(`Failed to load DNS provider from ${file}:`, err.message);
+        process.stderr.write(`[DNS Registry] Failed to load DNS provider from ${file}: ${err.message}\n`);
       }
     }
   }

dashcaddy-api/src/dns/dns-providers/rfc2136.js

@@ -10,6 +10,7 @@
 
 const { execFile } = require('child_process');
 const { promisify } = require('util');
+const crypto = require('crypto');
 const dns = require('dns');
 const os = require('os');
 const path = require('path');
@@ -117,7 +118,7 @@ class RFC2136Provider extends BaseDNSProvider {
    */
   async _runNsupdate(commands) {
     const script = commands.join('\n') + '\n';
-    const tmpFile = path.join(os.tmpdir(), `nsupdate-${Date.now()}-${Math.random().toString(36).slice(2, 8)}.cmd`);
+    const tmpFile = path.join(os.tmpdir(), `nsupdate-${crypto.randomBytes(4).toString('hex')}.cmd`);
 
     try {
       await fs.promises.writeFile(tmpFile, script, { mode: 0o600 });