refactor: reorganize, add package (opencode, osgrep, beads), add ai agent shell

modules/home/programs/neovim.nix

@@ -0,0 +1,62 @@
+{ pkgs, ... }: {
+  programs.neovim = {
+    enable = true;
+    viAlias = true;
+    vimAlias = true;
+    vimdiffAlias = true;
+
+    withNodeJs = true;
+    withPython3 = true;
+    withRuby = true;
+
+    plugins = with pkgs.vimPlugins; [
+      # Native extensions that need building
+      telescope-fzf-native-nvim
+      blink-cmp # Pre-built with Rust backend for fast fuzzy matching
+    ];
+
+    extraPackages = with pkgs; [
+      # LSP Servers
+      lua-language-server
+      nil # Nix LSP
+      pyright
+      nodePackages.typescript-language-server
+      rust-analyzer
+      gopls
+      clang-tools # provides clangd
+
+      # Formatters
+      stylua # Lua
+      nixfmt-classic # Nix (matches your fmt command)
+      ruff # Python (formatter + linter)
+      prettierd # JS/TS/JSON/YAML/Markdown
+      rustfmt # Rust
+      gofumpt # Go (stricter than gofmt)
+      shfmt # Shell scripts
+
+      # Linters
+      nodePackages.eslint # JavaScript/TypeScript
+      shellcheck # Shell scripts
+
+      # Tools
+      ripgrep
+      fd
+      git
+      ast-grep
+
+      # Additional tools for LazyVim features
+      tree-sitter # Required for treesitter parser compilation
+      imagemagick # Image conversion for snacks.nvim
+      ghostscript # PDF rendering support
+      tectonic # LaTeX math rendering
+      luarocks # Lua package manager for plugins
+      nodePackages.mermaid-cli # Mermaid diagram rendering
+    ];
+  };
+
+  # Symlink LazyVim config to ~/.config/nvim
+  xdg.configFile."nvim" = {
+    source = ./nvim;
+    recursive = true;
+  };
+}