chore: clean up dotfiles and add gitignore whitelist

Switch to whitelist-based .gitignore to only track essential configs:
nvim, yazi, kitty, zsh, ideavim, karabiner, tmux, scripts, starship.
Remove history, compiled files, and plugin dirs from tracking.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

nvim/lua/plugins/init.lua

@@ -11,25 +11,6 @@ return {
         "okuuva/auto-save.nvim",
         version = "v1.*",
         event = { "InsertLeave", "TextChanged" },
-        init = function()
-            local group = vim.api.nvim_create_augroup("autosave_message", { clear = true })
-            vim.api.nvim_create_autocmd("User", {
-                pattern = "AutoSaveWritePost",
-                group = group,
-                callback = function(opts)
-                    local saved_buffer = opts.data and opts.data.saved_buffer
-                    if not saved_buffer then
-                        return
-                    end
-
-                    local filename = vim.fn.fnamemodify(vim.api.nvim_buf_get_name(saved_buffer), ":t")
-                    if filename == "" then
-                        filename = "[No Name]"
-                    end
-                    vim.notify("AutoSave: " .. filename, vim.log.levels.INFO, { title = "auto-save.nvim" })
-                end,
-            })
-        end,
         opts = {
             enabled = true,
             trigger_events = {
@@ -129,7 +110,13 @@ return {
     {
         "folke/flash.nvim",
         event = "VeryLazy",
-        opts = {},
+        opts = {
+            modes = {
+                char = {
+                    enabled = false,
+                },
+            },
+        },
         keys = {
             { "s", mode = { "n", "x", "o" }, function() require("flash").jump() end,            desc = "Flash jump" },
             { "S", mode = { "n", "x", "o" }, function() require("flash").treesitter() end,      desc = "Flash treesitter" },
@@ -204,6 +191,39 @@ return {
 
     -- Markdown
     { "SidOfc/mkdx", ft = "markdown" },
+    {
+        "epwalsh/obsidian.nvim",
+        version = "*",
+        lazy = true,
+        ft = "markdown",
+        dependencies = { "nvim-lua/plenary.nvim" },
+        keys = {
+            { "<leader>on", "<cmd>ObsidianNew<cr>",          desc = "New note" },
+            { "<leader>oo", "<cmd>ObsidianQuickSwitch<cr>",  desc = "Quick switch" },
+            { "<leader>os", "<cmd>ObsidianSearch<cr>",       desc = "Search notes" },
+            { "<leader>ob", "<cmd>ObsidianBacklinks<cr>",    desc = "Backlinks" },
+            { "<leader>ot", "<cmd>ObsidianTags<cr>",         desc = "Tags" },
+            { "<leader>od", "<cmd>ObsidianToday<cr>",        desc = "Today's note" },
+        },
+        opts = {
+            workspaces = {
+                { name = "private", path = "~/Library/Mobile Documents/iCloud~md~obsidian/Documents/Private" },
+                { name = "work",    path = "~/Library/Mobile Documents/iCloud~md~obsidian/Documents/Work" },
+            },
+            completion = { nvim_cmp = false, min_chars = 2 },
+            ui = { enable = false }, -- render-markdown.nvim übernimmt das
+            disable_frontmatter = true,
+        },
+    },
+    {
+        "iamcco/markdown-preview.nvim",
+        cmd = { "MarkdownPreview", "MarkdownPreviewStop", "MarkdownPreviewToggle" },
+        ft = { "markdown" },
+        build = function() vim.fn["mkdp#util#install"]() end,
+        keys = {
+            { "<leader>mp", "<cmd>MarkdownPreviewToggle<cr>", desc = "Markdown Preview" },
+        },
+    },
     {
         "MeanderingProgrammer/render-markdown.nvim",
         dependencies = { "nvim-treesitter/nvim-treesitter", "echasnovski/mini.icons" },

nvim/lua/plugins/lsp.lua

@@ -104,7 +104,7 @@ return {
         end,
       },
       {
-        "fmuaddel/blink-copilot",
+        "giuxtaposition/blink-cmp-copilot",
         dependencies = { "zbirenbaum/copilot.lua" },
       },
     },
@@ -126,7 +126,7 @@ return {
           },
           copilot = {
             name = "copilot",
-            module = "blink-copilot",
+            module = "blink-cmp-copilot",
             score_offset = 50,
             async = true,
           },

nvim/lua/plugins/nvim-tree.lua

@@ -34,6 +34,9 @@ return {
       highlight_git = true,
       highlight_opened_files = "all",
       icons = {
+        show = {
+          diagnostics = false,
+        },
         glyphs = {
           default = "",
           symlink = "",
@@ -61,12 +64,6 @@ return {
     diagnostics = {
       enable = true,
       show_on_dirs = true,
-      icons = {
-        hint = "",
-        info = "",
-        warning = "",
-        error = "",
-      },
     },
     filters = {
       dotfiles = false,

nvim/lua/plugins/prettier.lua

@@ -18,7 +18,7 @@ return {
       json            = { "prettier" },
       html            = { "prettier" },
       css             = { "prettier" },
-      markdown        = { "prettier" },
+      markdown        = { "mdformat" },
       yaml            = { "prettier" },
     },
     format_on_save = {