refactor(flake.nix): Use flake-parts to simplify flake.nix

flake.lock

@@ -46,7 +46,9 @@
           "deploy-rs",
           "flake-compat"
         ],
-        "flake-parts": "flake-parts",
+        "flake-parts": [
+          "flake-parts"
+        ],
         "nix-test-runner": "nix-test-runner",
         "nixpkgs": [
           "sonnenshift",
@@ -154,18 +156,14 @@
     },
     "flake-parts": {
       "inputs": {
-        "nixpkgs-lib": [
-          "sonnenshift",
-          "crate2nix",
-          "nixpkgs"
-        ]
+        "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1712014858,
-        "narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
+        "lastModified": 1769996383,
+        "narHash": "sha256-AnYjnFWgS49RlqX7LrC4uA+sCCDBj0Ry/WOJ5XWAsa0=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
+        "rev": "57928607ea566b5db3ad13af0e57e921e6b12381",
         "type": "github"
       },
       "original": {
@@ -266,6 +264,21 @@
         "url": "https://channels.nixos.org/nixos-25.11/nixexprs.tar.xz"
       }
     },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1769909678,
+        "narHash": "sha256-cBEymOf4/o3FD5AZnzC3J9hLbiZ+QDT/KDuyHXVJOpM=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "72716169fe93074c333e8d0173151350670b824c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
     "pre-commit-hooks": {
       "inputs": {
         "flake-compat": [
@@ -309,6 +322,7 @@
       "inputs": {
         "deploy-rs": "deploy-rs",
         "disko": "disko",
+        "flake-parts": "flake-parts",
         "flint": "flint",
         "foundryvtt": "foundryvtt",
         "nixpkgs": "nixpkgs",