chore(claude-code): bump version to 1.0.80

- Updated `claude-code` version from 1.0.69 to 1.0.80 in `package.nix`.
- Adjusted hash values for `src` and `npmDepsHash` to match the new version.
- Removed redundant `--unset DEV` flag from the wrapper script.

overlays/unstable/claude-code/package-lock.json

@@ -6,13 +6,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "@anthropic-ai/claude-code": "^1.0.57"
+        "@anthropic-ai/claude-code": "^1.0.80"
       }
     },
     "node_modules/@anthropic-ai/claude-code": {
-      "version": "1.0.57",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-code/-/claude-code-1.0.57.tgz",
-      "integrity": "sha512-zMymGZzjG+JO9iKC5N5pAy8AxyHIMPCL6U3HYCR3vCj5M+Y0s3GAMma6GkvCXWFixRN6KSZItKw3HbQiaIBYlw==",
+      "version": "1.0.80",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-code/-/claude-code-1.0.80.tgz",
+      "integrity": "sha512-OpJb8LZBYuQ21lmT71c65NwUKGtQiva8dyKmCIPWnRIXHDaZ/31zzpDqcxgONUKUiZrnHqoMXwEwWyPyhD0+dA==",
       "license": "SEE LICENSE IN README.md",
       "bin": {
         "claude": "cli.js"