docs: expand Neovim LSP setup with step-by-step guide and keymaps

README.md

@@ -155,6 +155,8 @@ The `"..."` keeps Zed's default Markdown servers (e.g. `marksman`) active alongs
 
 ### Neovim (nvim-lspconfig)
 
+**1. Register the server** — add to your Neovim config (e.g. `~/.config/nvim/init.lua` or a plugin file):
+
 ```lua
 local lspconfig = require('lspconfig')
 local configs = require('lspconfig.configs')
@@ -173,6 +175,23 @@ end
 lspconfig.streamd.setup {}
 ```
 
+The server activates automatically when Neovim opens a Markdown file inside a directory that contains a `.streamd.toml` file.
+
+**2. Using LSP features** — standard Neovim LSP keymaps apply (`:help lsp`):
+
+| Action | Default keymap | Notes |
+|---|---|---|
+| Trigger `@` completions | `<C-x><C-o>` (insert mode) | Or via your completion plugin (`nvim-cmp`, `blink.cmp`, …) |
+| Show diagnostics for current line | `<C-w>d` / `gl` | File-name format warnings, timesheet errors |
+| Jump to next / previous diagnostic | `]d` / `[d` | Navigate between warnings |
+| Code actions (mark task as done) | `<leader>ca` (Neovim ≥ 0.10) | Place cursor on a line with `@Task` |
+| Rename marker across all files | `<leader>cr` / `grn` | Renames the `@Marker` under the cursor everywhere |
+| Find all references to a marker | `grr` / `<leader>fr` | Lists every occurrence of `@Marker` across the workspace |
+| Document outline (shard tree) | `:lua vim.lsp.buf.document_symbol()` | Or via Telescope: `:Telescope lsp_document_symbols` |
+| Workspace symbol search | `:lua vim.lsp.buf.workspace_symbol()` | Or via Telescope: `:Telescope lsp_workspace_symbols` |
+
+> **Note:** default keymaps (`grn`, `grr`, `<C-w>d`, `]d`/`[d`) are available from Neovim 0.10+. On older versions use `:lua vim.lsp.buf.*` commands or set up keymaps manually in your `on_attach` callback.
+
 ### VS Code (tasks.json / manual)
 
 Use any extension that lets you configure custom LSP servers, pointing `cmd` to `streamd lsp`.