fix: Prioritize Homebrew paths over Linux paths in PATH search

Previous version returned the first match found in PATH, which meant
/usr/local/bin would be chosen before /opt/homebrew/bin if it appeared
first in the PATH variable.

Changes:
- Collect ALL candidate paths from PATH first
- Assign priority scores (1=Homebrew, 2=.local, 3=.cargo, 4=/usr/local, 5=/usr/bin)
- Sort by priority (lowest number = highest priority)
- Return the highest priority path

This ensures macOS Homebrew paths (/opt/homebrew/bin) are always
preferred over Linux/Intel Mac paths (/usr/local/bin), regardless
of PATH order.

Priority scheme:
1. /opt/homebrew/bin (M1/M2/M3/M4 Macs with Homebrew)
2. ~/.local/bin (user-local installs)
3. ~/.cargo/bin (Rust/Cargo installs)
4. /usr/local/bin (Linux/Intel Mac standard)
5. /usr/bin (system binaries)

src/mcp_server_gitea.rs

@@ -281,23 +281,37 @@ fn resolve_binary_path(explicit_path: &Option<String>) -> Result<String> {
     if let Ok(path_env) = std::env::var("PATH") {
         let binary_names = ["gitea-mcp", "gitea-mcp-server"];
 
-        // Parse PATH and try each directory with each binary name
+        // Collect all candidate paths from PATH, then prioritize them
+        let mut candidates = Vec::new();
+
+        // Parse PATH and collect all plausible paths
         for path_dir in path_env.split(':') {
             for binary_name in &binary_names {
                 let full_path = format!("{}/{}", path_dir, binary_name);
-                // We can't check if file exists in WASM, but we can return the path
-                // and let Zed try to execute it. We'll return the first match from
-                // common directories to increase success rate.
-                if path_dir.contains("/usr/local/bin")
-                    || path_dir.contains("/usr/bin")
-                    || path_dir.contains("/opt/homebrew/bin")
-                    || path_dir.contains("/.local/bin")
-                    || path_dir.contains("/.cargo/bin")
-                {
-                    // This looks like a plausible location, try it
-                    return Ok(full_path);
+
+                // Categorize by priority (lower number = higher priority)
+                let priority = if path_dir.contains("/opt/homebrew/bin") {
+                    1 // Highest: macOS Homebrew (M1/M2/M3/M4 Macs)
+                } else if path_dir.contains("/.local/bin") {
+                    2 // User-local installations
+                } else if path_dir.contains("/.cargo/bin") {
+                    3 // Cargo installations
+                } else if path_dir.contains("/usr/local/bin") {
+                    4 // Linux standard location
+                } else if path_dir.contains("/usr/bin") {
+                    5 // System binaries
+                } else {
+                    continue; // Skip non-standard locations
+                };
+
+                candidates.push((priority, full_path));
             }
         }
+
+        // Sort by priority and return the highest priority candidate
+        candidates.sort_by_key(|(priority, _)| *priority);
+        if let Some((_, path)) = candidates.first() {
+            return Ok(path.clone());
         }
     }