Port hecate config: language servers, formatters, treesitter parsers, custom plugins
- init.lua: relativenumber, colorcolumn=120, expandtab=false, isfname @-@,
[d/]d diagnostic navigation, <leader>e diagnostic float, hecate hostname
- lsp.lua: add gopls, basedpyright (uv venv detection), ts_ls, nimls/gleam
(conditional), rust-analyzer in mason_tools; gleam indentation autocmd
- treesitter.lua: expand parsers (rust, go, js, ts, py, json, yaml, toml, gleam, nim)
- format.lua: full conform config with all formatters and :Format range command
- telescope.lua: add <C-p> git_files and <leader>pf prompted grep
- custom/plugins/rust.lua: rustaceanvim ^6
- custom/plugins/trouble.lua: trouble.nvim with standard keybindings
- custom/plugins/gitsigns.lua: enable whipsmart gitsigns extended keymaps
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