flake: update inputs — nixpkgs 24.11 -> 26.05, sops-nix follows (operator 2026-08-01)

nixpkgs un-pinned from a frozen rev (50ab7937, 24.11, 2025-06-30) to the nixos-26.05
channel; sops-nix un-pinned to follow it. The old pins claimed to match the cc-ci
server "for ecosystem consistency", but this host runs agents/tmux/nginx/docker, not
recipe CI, so it need not track that server — and a frozen rev only accrues unpatched
CVEs. Built + activated: generation nixos-26.05.20260731.5b4f72e, kernel 6.6.94 ->
6.18.40 (reboot pending for the kernel). Pre-update files: /tmp/flake.{nix,lock}.pre-update.

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

flake.lock

@@ -2,17 +2,17 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1751274312,
-        "narHash": "sha256-/bVBlRpECLVzjV19t5KMdMFWSwKLtb5RyXdjz3LJT+g=",
+        "lastModified": 1785491804,
+        "narHash": "sha256-p00vplVOyfKGlhju0+eGGPAxyYYKaY0lpyuoHLFIx2Y=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "50ab793786d9de88ee30ec4e4c24fb4236fc2674",
+        "rev": "5b4f72e1705a63aace42900610c4db82cb4af0ec",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
+        "ref": "nixos-26.05",
         "repo": "nixpkgs",
-        "rev": "50ab793786d9de88ee30ec4e4c24fb4236fc2674",
         "type": "github"
       }
     },
@@ -29,17 +29,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1750119275,
-        "narHash": "sha256-Rr7Pooz9zQbhdVxux16h7URa6mA80Pb/G07T4lHvh0M=",
+        "lastModified": 1783174389,
+        "narHash": "sha256-aCWC8ngycU7OdJrU2+Je3qf+1a2ykuBvpPhZT/9tXMc=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "77c423a03b9b2b79709ea2cb63336312e78b72e2",
+        "rev": "f1406619a3884cd5c47992a70b8b35c9c0fcb4c9",
         "type": "github"
       },
       "original": {
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "77c423a03b9b2b79709ea2cb63336312e78b72e2",
         "type": "github"
       }
     }