Update flake.lock and enable Slack

- Add windows‑rs and wintypes_shim inputs; remove nixpkgs‑wine
- Refresh locked revisions for affinity‑nix, nur‑expressions,
  home‑manager, nixpkgs, noctalia‑shell, and AffinityOnLinux
- Enable Slack in Garand‑Desktop system modules
- Bump Helium AppImage to version 0.16.6.1
- Replace Z.ai GLM 4.7 with Qwen 3.8 27B model in Zed language‑model
  settings

modules/home/zed/user-settings/language-models.nix

@@ -16,10 +16,10 @@ _: {
           };
         }
         {
-          name = "zai-glm-4.7";
-          display_name = "Z.ai GLM 4.7";
+          name = "qwen-3.8-27b";
+          display_name = "Qwen 3.8 27B";
           max_tokens = 64000;
-          max_output_tokens = 40000;
+          max_output_tokens = 32000;
           capabilities = {
             tools = true;
             images = true;
@@ -45,9 +45,9 @@ _: {
           };
         }
         {
-          name = "zai-glm-4.7";
-          display_name = "Z.ai GLM 4.7";
-          max_tokens = 131000;
+          name = "qwen-3.8-27b";
+          display_name = "Qwen 3.8 27B";
+          max_tokens = 128000;
           max_output_tokens = 40000;
           capabilities = {
             tools = true;