turny: fix SPI/GPIO config for newer kernels

- Add complete config.txt settings with u-boot boot lines + spi=on
- Override sdImage.populateFirmwareCommands to use configtxt module output
- Mount firmware partition and add activation script to sync config.txt
- Load spi_bcm2835 and bcm2835_gpiomem kernel modules
- Add udev rule for gpiomem subsystem (not just gpio)
- Relax ProtectKernelTunables so service can access GPIO
- Update turny flake input to rppal-based CS pin fix

home/modules/zed/default.nix

@@ -61,7 +61,6 @@ let
     "opencode"
     "opencode-go"
     "fireworks-ai"
-    "firepass"
   ];
 
   openaiCompatibleProviders = builtins.listToAttrs (
@@ -142,8 +141,8 @@ in
         agent = {
           enabled = true;
           default_model = {
-            provider = "opencode-go";
-            model = "glm-5";
+            provider = "fireworks-ai";
+            model = "accounts/fireworks/models/glm-5p2";
           };
         };
         agent_servers = {
@@ -181,7 +180,7 @@ in
           };
           Nix = {
             formatter.external = {
-              command = lib.getExe pkgs.nixfmt-rfc-style;
+              command = lib.getExe pkgs.nixfmt;
               arguments = [ "-q" ];
             };
           };
@@ -256,7 +255,7 @@ in
             arguments = [ "--stdio" ];
           };
           json-language-server.binary = {
-            path = lib.getExe nodePackages.vscode-json-languageserver;
+            path = lib.getExe vscode-json-languageserver;
             arguments = [ "--stdio" ];
           };
           package-version-server.binary.path = lib.getExe pkgs-unstable.package-version-server;
@@ -277,7 +276,13 @@ in
         };
         edit_predictions = {
           mode = "eager";
-          provider = "copilot";
+          provider = "open_ai_compatible_api";
+          open_ai_compatible_api = {
+            api_url = "https://api.fireworks.ai/inference/v1/completions";
+            model = "accounts/fireworks/models/qwen3p6-plus";
+            prompt_format = "qwen";
+            max_output_tokens = 1024;
+          };
         };
         buffer_font_family = "Iosevka Nerd Font";
         buffer_font_size = 16;