7 files changed, 165 insertions, 28 deletions
diff --git a/config/nvim/lua/autocommands.lua b/config/nvim/lua/autocommands.lua
index fee69a4..9811dbe 100644
--- a/config/nvim/lua/autocommands.lua
+++ b/config/nvim/lua/autocommands.lua
@@ -98,12 +98,9 @@ vim.api.nvim_create_autocmd("FileType", {
 				pcall(vim.treesitter.start, buf, ft)
 			end
 		end
-	end,
-})
-vim.api.nvim_create_autocmd("User", {
-	pattern = "TSUpdate",
-	callback = function()
-		vim.cmd([[TSEnable highlight]])
+		vim.wo[0][0].foldexpr = "v:lua.vim.treesitter.foldexpr()"
+		vim.wo[0][0].foldmethod = "expr"
+		vim.bo.indentexpr = "v:lua.require'nvim-treesitter'.indentexpr()"
 	end,
 })
 vim.api.nvim_create_autocmd({ "BufWritePost" }, {
diff --git a/config/nvim/lua/plugins.lua b/config/nvim/lua/plugins.lua
index 6ed6e72..fc51fb7 100644
--- a/config/nvim/lua/plugins.lua
+++ b/config/nvim/lua/plugins.lua
@@ -9,7 +9,6 @@ require("lazy").setup({
 	require("plugins.apidocs"),
 	require("plugins.resize"),
 	require("plugins.lsp_saga"),
-	require("plugins.lsp_signature"),
 	require("plugins.autosave"),
 	require("plugins.cmp"),
 	require("plugins.treesitter"),
@@ -23,6 +22,7 @@ require("lazy").setup({
 	require("plugins.columns"),
 	require("plugins.gitsigns"),
 	require("plugins.claudecode"),
+	require("plugins.zk"),
 }, {
 	performance = {
 		rtp = {
diff --git a/config/nvim/lua/plugins/lsp_saga.lua b/config/nvim/lua/plugins/lsp_saga.lua
index ab8177f..546c073 100644
--- a/config/nvim/lua/plugins/lsp_saga.lua
+++ b/config/nvim/lua/plugins/lsp_saga.lua
@@ -1,8 +1,32 @@
 return {
 	"nvimdev/lspsaga.nvim",
+	dependencies = {
+		"nvim-treesitter/nvim-treesitter", -- optional
+		"nvim-tree/nvim-web-devicons", -- optional
+	},
 	opts = {
 		lightbulb = {
 			enable = false,
 		},
+		diagnostic = {
+			show_layout = "float",
+			auto_preview = true,
+			keys = {
+				exec_action = "o",
+				quit = "q",
+			},
+		},
+	},
+	keys = {
+		{
+			"<leader>e",
+			"<cmd>Lspsaga show_buf_diagnostics<cr>",
+			desc = "Show buffer diagnostic",
+		},
+		{
+			"<leader>we",
+			"<cmd>Lspsaga show_workspace_diagnostics<cr>",
+			desc = "Show workspace diagnostic",
+		},
 	},
 }
diff --git a/config/nvim/lua/plugins/lsp_signature.lua b/config/nvim/lua/plugins/lsp_signature.lua
deleted file mode 100644
index b9add0b..0000000
--- a/config/nvim/lua/plugins/lsp_signature.lua
+++ /dev/null
@@ -1,15 +0,0 @@
-return {
-	"ray-x/lsp_signature.nvim",
-	event = "VeryLazy",
-	opts = {
-		doc_lines = 1,
-		max_height = 3,
-		hint_prefix = "",
-		hint_prefix = {
-			above = "↙ ",
-			current = "← ",
-			below = "↖ ",
-		},
-		floating_window = true,
-	},
-}
diff --git a/config/nvim/lua/plugins/telescope.lua b/config/nvim/lua/plugins/telescope.lua
index 228160f..e26a618 100644
--- a/config/nvim/lua/plugins/telescope.lua
+++ b/config/nvim/lua/plugins/telescope.lua
@@ -45,11 +45,6 @@ return {
 			desc = "Commands history",
 		},
 		{
-			"<leader>e",
-			"<cmd>Telescope diagnostics<CR>",
-			desc = "Diagnostics",
-		},
-		{
 			"gi",
 			"<cmd>Telescope lsp_implementations<CR>",
 			desc = "LSP implementations",
@@ -87,4 +82,4 @@ return {
 		})
 		require("telescope").load_extension("fzf")
 	end,
-}
-\ No newline at end of file
+}
diff --git a/config/nvim/lua/plugins/zk.lua b/config/nvim/lua/plugins/zk.lua
new file mode 100644
index 0000000..1b21a74
--- /dev/null
+++ b/config/nvim/lua/plugins/zk.lua
@@ -0,0 +1,26 @@
+return {
+	"zk-org/zk-nvim",
+	config = function()
+		require("zk").setup({
+			-- Can be "telescope", "fzf", "fzf_lua", "minipick", "snacks_picker",
+			-- or select" (`vim.ui.select`).
+			picker = "telescope",
+
+			lsp = {
+				-- `config` is passed to `vim.lsp.start(config)`
+				config = {
+					name = "zk",
+					cmd = { "zk", "lsp" },
+					filetypes = { "markdown" },
+					-- on_attach = ...
+					-- etc, see `:h vim.lsp.start()`
+				},
+
+				-- automatically attach buffers in a zk notebook that match the given filetypes
+				auto_attach = {
+					enabled = true,
+				},
+			},
+		})
+	end,
+}
diff --git a/config/nvim/lua/theme/colors256.lua b/config/nvim/lua/theme/colors256.lua
new file mode 100644
index 0000000..350a2a1
--- /dev/null
+++ b/config/nvim/lua/theme/colors256.lua
@@ -0,0 +1,110 @@
+-- Hex to 256 color conversion utilities
+
+local M = {}
+
+-- Convert hex color to RGB values
+local function hex_to_rgb(hex)
+	hex = hex:gsub("#", "")
+	return {
+		r = tonumber(hex:sub(1, 2), 16),
+		g = tonumber(hex:sub(3, 4), 16),
+		b = tonumber(hex:sub(5, 6), 16),
+	}
+end
+
+-- Convert RGB to nearest 256 color index
+local function rgb_to_256(r, g, b)
+	-- Build full 256 color palette and find nearest
+	local palette = {}
+
+	-- Gray ramp (232-255)
+	for i = 0, 23 do
+		local gray = 8 + i * 10
+		palette[#palette + 1] = { r = gray, g = gray, b = gray, idx = 232 + i }
+	end
+
+	-- 6x6x6 color cube (16-231)
+	local values = {0, 95, 135, 175, 215, 255}
+	for ri = 0, 5 do
+		for gi = 0, 5 do
+			for bi = 0, 5 do
+				local idx = 16 + ri * 36 + gi * 6 + bi
+				palette[#palette + 1] = {
+					r = values[ri + 1],
+					g = values[gi + 1],
+					b = values[bi + 1],
+					idx = idx
+				}
+			end
+		end
+	end
+
+	-- Find nearest color (minimum Manhattan distance)
+	local min_dist = 100000
+	local nearest_idx = 15
+
+	for _, color in ipairs(palette) do
+		local dist = math.abs(r - color.r) + math.abs(g - color.g) + math.abs(b - color.b)
+		if dist < min_dist then
+			min_dist = dist
+			nearest_idx = color.idx
+		end
+	end
+
+	return nearest_idx
+end
+
+-- Convert hex color string to 256 color index
+function M.hex_to_256(hex)
+	if not hex or hex == "" or hex == "NONE" then
+		return nil
+	end
+
+	if type(hex) == "number" then
+		return hex -- Already a cterm color
+	end
+
+	local rgb = hex_to_rgb(hex)
+	return rgb_to_256(rgb.r, rgb.g, rgb.b)
+end
+
+-- Create highlight table with cterm colors from fg and bg hex colors
+function M.convert_theme_theme(theme)
+	local cterm_theme = {}
+	for group, hl in pairs(theme) do
+		local cterm = {}
+		if hl.fg then
+			cterm.fg = M.hex_to_256(hl.fg)
+		end
+		-- Include background colors
+		if hl.bg then
+			cterm.bg = M.hex_to_256(hl.bg)
+		end
+		if hl.sp then
+			cterm.sp = M.hex_to_256(hl.sp)
+		end
+		if hl.bold then
+			cterm.bold = true
+		end
+		if hl.underline then
+			cterm.underline = true
+		end
+		if hl.undercurl then
+			cterm.undercurl = true
+		end
+		if hl.italic then
+			cterm.italic = true
+		end
+		if hl.reverse then
+			cterm.reverse = true
+		end
+		if hl.standout then
+			cterm.standout = true
+		end
+
+		cterm_theme[group] = cterm
+	end
+	return cterm_theme
+end
+
+return M