feat: Dual-OS Neovim MCP Integration

- Created linux-nvim and win-nvim MCP servers for deep Neovim Msgpack-RPC integration.
- Implemented tools: nvim_goto_line, nvim_get_active_buffer, nvim_get_cursor, nvim_get_visual_selection, nvim_set_diagnostics.
- Added gemini-integration.lua for active UI socket discovery.
- Updated build.cmd to cross-compile for both Windows (gnu) and Linux (musl).
- Updated README, design.md, and instructions.md with architecture and tool capabilities.

stub/src/main.rs

@@ -7,10 +7,12 @@ use tokio::sync::mpsc;
 use tokio_util::io::StreamReader;
 
 #[derive(Parser)]
-#[command(name = "mcp-memory-stub")]
+#[command(name = "mcp-memory-stub", author, version, about = "Antigravity MCP Memory Stub / Proxy", long_about = None)]
 struct Cli {
+    /// Target URL for the stub to proxy messages to
     #[arg(long, default_value = "http://localhost:3000")]
     target: String,
+    /// Optional command to execute if the target server is unreachable
     #[arg(long)]
     wake_cmd: Option<String>,
 }
@@ -56,11 +58,9 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                             .send()
                             .await;
 
-                        if res.is_ok() {
-                            break;
-                        }
+                        if let Ok(resp) = res { if resp.status().is_success() { break; } }
                     }
-                    tokio::time::sleep(tokio::time::Duration::from_millis(500)).await;
+                    tokio::time::sleep(tokio::time::Duration::from_millis(10)).await;
                     attempts += 1;
                     if attempts % 10 == 0 {
                         eprintln!("[PROXY] Waiting for server to accept messages...");
@@ -132,7 +132,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                         }
                     }
                     *post_url.write().await = String::new();
-                    tokio::time::sleep(tokio::time::Duration::from_millis(500)).await;
+                    tokio::time::sleep(tokio::time::Duration::from_millis(10)).await;
                 }
                 Err(_) => {
                     if let Some(ref cmd) = wake_cmd {
@@ -150,3 +150,5 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         Ok(())
     })
 }
+
+