Make home manager stable

nix/modules/home/common.nix

@@ -18,7 +18,7 @@
     # Language servers
     yaml-language-server
     marksman
-    dockerfile-language-server
+    pkgs.unstable.dockerfile-language-server  # Use unstable for latest LSP features
 
     # Secrets management
     sops

nix/modules/home/dev.nix

@@ -43,10 +43,10 @@ in
     
     (lib.mkIf cfg.enable {
       home.packages =
-        (lib.optional cfg.claude-code.enable pkgs.claude-code) ++
-        (lib.optional cfg.opencode.enable pkgs.opencode) ++
-        (lib.optional cfg.gemini-cli.enable pkgs.gemini-cli) ++
-        (lib.optional (cfg.bubblewrap.enable && pkgs.stdenv.isLinux) pkgs.bubblewrap);
+        (lib.optional cfg.claude-code.enable pkgs.unstable.claude-code) ++
+        (lib.optional cfg.opencode.enable pkgs.unstable.opencode) ++
+        (lib.optional cfg.gemini-cli.enable pkgs.unstable.gemini-cli) ++
+        (lib.optional (cfg.bubblewrap.enable && pkgs.stdenv.isLinux) pkgs.unstable.bubblewrap);
     })
   ];
 }

nix/modules/home/git.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 
 {
   programs.git = {
@@ -59,6 +59,7 @@
     ];
   };
 
+  # Difftastic - modern diff tool
   programs.difftastic = {
     enable = true;
     git.enable = true;

nix/modules/home/nvim.nix

@@ -71,7 +71,9 @@
       (nvim-treesitter.withPlugins (p: [ p.awk p.bash p.c p.c_sharp p.cpp p.css p.diff p.dockerfile p.doxygen p.git_config p.gitcommit p.go p.gomod p.gosum p.gotmpl p.helm p.haskell p.html p.http p.java p.javascript p.json p.latex p.lua p.markdown p.markdown_inline p.matlab p.nix p.printf p.python p.regex p.rust p.sql p.strace p.supercollider p.svelte p.swift p.terraform p.tmux p.toml p.typescript p.vim p.xml p.yaml p.zig ]))
     ];
 
-    initLua = builtins.concatStringsSep "\n" [
+    # Use extraLuaConfig for home-manager 25.11 compatibility
+    # (initLua was renamed from extraLuaConfig in later versions)
+    extraLuaConfig = builtins.concatStringsSep "\n" [
       (lib.strings.fileContents  ../../../nvim/base.lua)
       (lib.strings.fileContents ../../../nvim/keymaps.lua)
       (lib.strings.fileContents ../../../nvim/plugins.lua)