Add Linode host configuration and WireGuard setup

- Introduced new configuration files for Linode host, including hardware configuration, toggles, and WireGuard settings.
- Updated flake.nix to include the new images.nix file for Linode image generation.
- Adjusted SSH key paths and secrets management for WireGuard to ensure proper integration with the new host setup.
- Enhanced firewall rules and NAT configuration for WireGuard to improve security and connectivity.

secrets/wireguard.yaml

@@ -1,6 +1,12 @@
 wireguard:
-    private: ENC[AES256_GCM,data:wwggc9T88gK/EMmjPauf14DZGUnfipBpfN3FnlPhsO6FtVmK2aad/D0/Rqw=,iv:Q15iiEOFRa3bPf7NfZcEZOgEqnjIJPenYgE6c6HRYI8=,tag:x+auLhc/FDhxZxzWmcrX9Q==,type:str]
-    public: ENC[AES256_GCM,data:uelp1opnLR5EfvNBSA3Sk33ktMoG6+Pvj7oKYtdlCpXMZel9O8G7P4X5S2M=,iv:AQECJmnXSc2MM0pT8ZJtA51pn+tvhhyAxFDMBH/H6wA=,tag:yWsnQbHaeiXyPLbpxMZwsg==,type:str]
+    linode:
+        private: ENC[AES256_GCM,data:PejimzNOiJGlTbMZjlyZIFYCnhu/ZAisG/we03ZJo8VO4cwclm+ztXCE89c=,iv:iw3hIUxMyx7rIQ56Nc4zPXBdRn8HYL44AXOu57VfiX0=,tag:zZcGrTU+1k6FRtTG5zj4pw==,type:str]
+        public: ENC[AES256_GCM,data:G3p/wGLeNq8/icpKbIUGEMC/l8rqptUv7tpB2md+fmo0UJieK3s3lWy79u8=,iv:4LQ8RfT3VkzdrxkOn+XROKdnBqdhbBdRzw+x/j+t/BY=,tag:+s4eCnDp6XSE+w4wlB+QLA==,type:str]
+    server:
+        private: ENC[AES256_GCM,data:owBMyfOeeizHMbRp7yqaE95otpyEsH5HUk0RcltEqgzvTGfTWBLP8ZvMhPA=,iv:KtGd+w4WtRGJ6ux+70SOU6eq21Ak4r0obFimvPWWSjE=,tag:2eYP41vhKNyUi/3zyOY+Vg==,type:str]
+        public: ENC[AES256_GCM,data:9GcLl+xpcZZ7XU4c0eDqvUjc9VVvs8C4ZhRUfB9WjuGIu3we/Syxh8pGC8c=,iv:IdXada3p+GVpLgm9mOGjAObPPFfXzSNVfBm01Liyz4s=,tag:uzB5BpVNT4F+wUO3gwsunQ==,type:str]
+        private_old: ENC[AES256_GCM,data:T6SIjKfNJSyapmF1IFkoSBT0S8/bsvbivRqbS8FubQ0UnZ+SfMRIEHVPXgg=,iv:OnQw4OKfRmDhOzBUq834oqTDCobE5RW2EKqFYUf1Xt8=,tag:4hJ8pumr4KDMyM1Sygy57g==,type:str]
+        public_old: ENC[AES256_GCM,data:teRFtsuKyrK/D5yag+RyHCsrtuuK1S0rC9By9I+eMCTGh00Jiw7T/kEdGm0=,iv:A8JAcZekzDnP+PNhH1YKigBhNVSKqsRC0UbIr+Af5ec=,tag:m852G+0tdrqzpY1J6YBxrg==,type:str]
 vps:
     server:
         private: ENC[AES256_GCM,data:wrP/069tuQs3ObYE8Q0MNVxe3+4vZ2HIImoIdZpj1uPgdBknboX1wmANv/k=,iv:FJL5KumHos8PoXra+BB2Uc6YedsF6MD3wWyuugXzJ+E=,tag:nVuTrW2P7JvnWnv6H1SmdQ==,type:str]
@@ -46,7 +52,7 @@ sops:
             KzZFSWprL0l0MDdVdEVKbEV5eklZdTAK/1ZyGvElfp+LVloSR6aJUtvrgU0CrzaJ
             SQtO7vc4oDedkiTz6LKySta+uyn3e17Jzdyy9nU2D/Q5X+CpKGP3cg==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2025-09-08T00:14:52Z"
-    mac: ENC[AES256_GCM,data:O2herKRy4k9ZMuPzzPF5QlBC2isXdRoIsbYLJ/6X7esxtxxgNuAljx4SCR6UMT7pl3G2E33cnnBEkuAIy6SMXOaZNfOuAEJXaCwpRwCXu26lrcTf6n7UdP36GWfIRsR4utD5/vv66ch6MqmQWkW7E5zydy5dOv+BJ4XS/50OUQs=,iv:TscYNQaeI+mBxyobxI1O4wUzRtA27pvjXz27kqMJhA0=,tag:zx/xrYAWJCxYz5HRTKzYfQ==,type:str]
+    lastmodified: "2025-10-28T19:13:03Z"
+    mac: ENC[AES256_GCM,data:Mp6sgr6VwoQqnOmqloCAeKuL/8kB4vNLxk94AXAzX1z/Wq+R3Y3I6Yh3hB+QeTRW8nJ5hmGjAEeVzFtjRFP7EcL3KKY3B7s7TU1O+I3lWYMgNuCG6+Z7do62x/1ZyeCGMRQDIc6Xzu13ktyxf4AeVxg/7w0qBHbt3QVa18UM08U=,iv:4jJ5mDEeNgSwd+ekzDuF1z8pSNy04M1XEPr7TIIrZ2M=,tag:ZwiHCXKQWONsBJ9NGsYo1w==,type:str]
     unencrypted_suffix: _unencrypted
-    version: 3.10.2
+    version: 3.11.0