docs: Trim setup heading copy

why: "(no clone needed)" is filler — the uvx command speaks for itself.
what:
- README.md: "One-liner setup (no clone needed)" → "One-liner setup"
- docs/quickstart.md: "One-liner with uvx (no clone needed)" → "One-liner with uvx"

Author: tony

README.md

@@ -13,7 +13,7 @@ Give AI agents (Claude Code, Claude Desktop, Codex CLI, Gemini CLI, Cursor) prog
 
 ## Quick start
 
-### One-liner setup (no clone needed)
+### One-liner setup
 
 `uvx` handles install, deps, and execution automatically:
 

docs/quickstart.md

@@ -10,7 +10,7 @@
 
 ## Installation
 
-### One-liner with uvx (no clone needed)
+### One-liner with uvx
 
 **Claude Code:**