chore(flake): bump claude-code to 2.1.258

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

flake.lock

@@ -74,11 +74,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1787189302,
-        "narHash": "sha256-cUM75Rob89qTxJvqVRF8GUewOriqQtLiyiy5xfd1fMM=",
+        "lastModified": 1788303707,
+        "narHash": "sha256-ICEHLJAM480kNrsOQ+DPWWV3XFJUDc6/n/PPcjAuRR8=",
         "owner": "sadjow",
         "repo": "claude-code-nix",
-        "rev": "8fb8cbab6345583e0b68ca7dbbbad08a0a348145",
+        "rev": "7f0aeb2f0c6cf1ca2bf3b0b76b823b24b04b5b21",
         "type": "github"
       },
       "original": {
@@ -866,11 +866,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1787111413,
-        "narHash": "sha256-sFosWtq21eHGJRnTc/hvf4M1obRgLEUMNm/IzllkHMA=",
+        "lastModified": 1787964612,
+        "narHash": "sha256-0N9nghg3nwzX6b6qc77EzjR9cu/Z+UR66FlfsCqiURs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "afe3d8ac4395617bdcdac9f188ac8717a062e014",
+        "rev": "e8be7818e19ada32105a8af937a6a473b38167ca",
         "type": "github"
       },
       "original": {