Use status for the RCON probe (Plutonium doesn't wrap-recognize getstatus)

The hex dump surfaced Plutonium's actual reply:
  ff ff ff ff 70 72 69 6e 74 0a  ....print.
  55 6e 6b 6e 6f 77 6e 20 63 6f  Unknown co
  6d 6d 61 6e 64 20 22 67 65 74  mmand "get
  73 74 61 74 75 73 22 0a        status".

Auth was fine — Plutonium just doesn't recognize `getstatus` as an rcon
subcommand. In Q3-derived engines, `getstatus` is an anonymous query
(no rcon wrapper); we were sending `rcon <password> getstatus`, which
made Plutonium treat it as an unknown subcommand.

Switch rconStatusResult to use `status`, same command rconGetPlayerCount
has been using successfully all along. The response is a `print` body
with a `key: value` header (`map: mp_kino\n...`) followed by the
scoreboard, not the `\info\` line the statusResponse dialect uses.

New parseStatusHeader extracts key:value dvars from the header, stopping
at the `--- ---` separator (or the first player row) so guids and names
can't leak into the metadata. rconStatusResult now merges header values
with the statusResponse info line so both dialects produce map/gametype
in the RconStatus shape.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/unit/rcon.test.ts

@@ -3,6 +3,7 @@ import {
     parseInfoLine,
     parsePlayerCount,
     parsePlayerRoster,
+    parseStatusHeader,
     formatRawReply
 } from '../../src/lib/server/integrations/rcon.js';
 
@@ -119,6 +120,46 @@ describe('parsePlayerRoster', () => {
     });
 });
 
+describe('parseStatusHeader', () => {
+    it('extracts key:value header lines from a Plutonium status body', () => {
+        const body = [
+            'print',
+            'map: mp_kino',
+            'num score ping guid                             name',
+            '--- ----- ---- --------                         ----',
+            '  0    12   45 abc123def456                     joe'
+        ].join('\n');
+        const h = parseStatusHeader(body);
+        expect(h.map).toBe('mp_kino');
+        // Header keys stop at the scoreboard — guids/names must not leak in.
+        expect(h.abc123def456).toBeUndefined();
+    });
+
+    it('handles builds that include gametype or other dvars in the header', () => {
+        const body = [
+            'print',
+            'map: mp_ascension',
+            'gametype: zclassic',
+            'sv_maxclients: 4',
+            '--- --- ---',
+            ''
+        ].join('\n');
+        const h = parseStatusHeader(body);
+        expect(h.map).toBe('mp_ascension');
+        expect(h.gametype).toBe('zclassic');
+        expect(h.sv_maxclients).toBe('4');
+    });
+
+    it('returns empty object for a statusResponse (no colon header)', () => {
+        const body = [
+            'statusResponse',
+            '\\mapname\\mp_kino\\g_gametype\\zclassic',
+            '10 45 "joe"'
+        ].join('\n');
+        expect(parseStatusHeader(body)).toEqual({});
+    });
+});
+
 describe('formatRawReply', () => {
     it('renders a small buffer as hex + printable ASCII with an offset', () => {
         const buf = Buffer.from([0xff, 0xff, 0xff, 0xff, 0x70, 0x72, 0x69, 0x6e, 0x74, 0x0a]);