docs: add grokkit query command documentation to README

- Added entry to commands list
- Created new section with usage examples and features

README.md

@@ -38,6 +38,7 @@ grokkit version
 
 - [Commands](#commands)
   - [chat](#-grokkit-chat)
+  - [query](#-grokkit-query)
   - [edit](#-grokkit-edit-file-instruction)
   - [commit / commitmsg](#-grokkit-commitmsg)
   - [review](#-grokkit-review)
@@ -72,6 +73,25 @@ grokkit chat --debug            # Enable debug logging
 - History is saved automatically between sessions
 - Use `--debug` to see API request timing
 
+### 🤖 `grokkit query`
+
+One-shot technical question answering. Perfect for quick programming or engineering questions.
+
+```bash
+# Basic usage
+grokkit query "How do I sort a slice of structs by a field in Go?"
+
+# Longer, more detailed answer
+grokkit query --wordy "Explain how Go's context package works with cancellation"
+```
+Features:
+
+Default mode is concise, factual, and actionable
+--wordy flag gives longer, more explanatory answers
+Uses the fast non-reasoning model by default for speed
+No persistent history or interactive chat UI
+
+
 ### ✏️ `grokkit edit FILE "instruction"`
 AI-powered file editing with preview.