fix(MESHCENT-002): CU-86akbhhdk Unwrapped this.write() for no-client-cert response in swarmserver.js

[flamingo]

Closes findings from rule MESHCENT-002 — Unwrapped this.write() for no-client-cert response in swarmserver.js.

Draft — this is a starting point, not a finished change. The fix required judgment, so read it before trusting it.

#	Fix confidence	Finding	Location
1	🟢 90 high	Unwrapped this.write() for no-client-cert response in swarmserver.js	swarmserver.js:177

What changed — and what was deliberately left — is explained per finding as inline review comments on the lines each finding touched.

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Run: https://product-hub.flamingo.so/admin/code-review
Run id: a271a374-6235-40d2-8fdd-b6d4de951f4b

Merging this PR is recorded as acceptance of the rule that produced it;
closing it unmerged is recorded as rejection. Both feed rule health, so
closing a wrong suggestion is useful rather than merely tidy.

ClickUp task: CU-86akbhhdk MeshCentral webauthn and plugin JS fixes (15 PRs)

[flamingo]

🦩 What this fix changed, finding by finding

1 finding(s) fixed in this draft — 1 explained inline on the diff.

[flamingo]

🦩 🔴 Unwrapped this.write() for no-client-cert response in swarmserver.js

In the onData function, wrapped the this.write('HTTP/1.1 200 OK...No client certificate given.') call at the no-client-cert branch in a try { ... } catch (ex) { } block, matching the existing codebase convention seen elsewhere in this same file (e.g. relaySocket.write calls) for guarding sends against already-closed sockets.

🤖 Prompt for AI agents

In swarmserver.js around line 177, review and complete this code-review fix: Unwrapped this.write() for no-client-cert response in swarmserver.js.
What the draft fix changed: In the `onData` function, wrapped the `this.write('HTTP/1.1 200 OK...No client certificate given.')` call at the no-client-cert branch in a `try { ... } catch (ex) { }` block, matching the existing codebase convention seen elsewhere in this same file (e.g. relaySocket.write calls) for guarding sends against already-closed sockets.
Verify the change is correct and complete; do not refactor unrelated code.

fix confidence: 🟢 90 high — react 👍/👎 to teach the reviewer