docs: add DNS zone file and screenshots for Pangolin architecture documentation

- Added `mo-code.at` zone file for informational and archival purposes.
- Uploaded related screenshots for Pangolin architecture and server overview.

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

docs/01_Architecture/Pangolin/mo-code.at.txt

@@ -0,0 +1,50 @@
+;;
+;; Domain:     mo-code.at.
+;; Exported:   2026-03-11 11:37:44
+;;
+;; This file is intended for use for informational and archival
+;; purposes ONLY and MUST be edited before use on a production
+;; DNS server.  In particular, you must:
+;;   -- update the SOA record with the correct authoritative name server
+;;   -- update the SOA record with the contact e-mail address information
+;;   -- update the NS record(s) with the authoritative name servers for this domain.
+;;
+;; For further information, please consult the BIND documentation
+;; located on the following website:
+;;
+;; http://www.isc.org/
+;;
+;; And RFC 1035:
+;;
+;; http://www.ietf.org/rfc/rfc1035.txt
+;;
+;; Please note that we do NOT offer technical support for any use
+;; of this zone data, the BIND name server, or any other third-party
+;; DNS software.
+;;
+;; Use at your own risk.
+;; SOA Record
+mo-code.at	3600	IN	SOA	johnny.ns.cloudflare.com. dns.cloudflare.com. 2052489566 10000 2400 604800 3600
+
+;; NS Records
+mo-code.at.	86400	IN	NS	johnny.ns.cloudflare.com.
+mo-code.at.	86400	IN	NS	roxy.ns.cloudflare.com.
+
+;; A Records
+mail.mo-code.at.	1	IN	A	81.19.149.91 ; cf_tags=cf-proxied:false
+*.mo-code.at.	1	IN	A	203.98.67.201 ; cf_tags=cf-proxied:false
+mo-code.at.	1	IN	A	203.98.67.201 ; cf_tags=cf-proxied:false
+
+;; CNAME Records
+imap.mo-code.at.	1	IN	CNAME	imap.world4you.com. ; cf_tags=cf-proxied:false
+
+;; MX Records
+mo-code.at.	1	IN	MX	10 mail.mo-code.at.
+
+;; NS Records
+mo-code.at.	1	IN	NS	ns2.world4you.at.
+mo-code.at.	1	IN	NS	ns1.world4you.at.
+
+;; TXT Records
+_dmarc.mo-code.at.	1	IN	TXT	"v=DMARC1;p=none;"
+mo-code.at.	1	IN	TXT	"v=spf1 mx include:spf.w4ymail.at -all"