debug: Add extensive logging to binary path resolution

Added eprintln debug statements to trace:
- PATH environment variable contents
- Each directory being considered
- Priority assigned to each path
- All candidates after sorting
- Final selected path

This will help diagnose why Homebrew paths aren't being selected
on macOS M4. Debug output goes to stderr which Zed captures in logs.

src/mcp_server_gitea.rs

@@ -284,6 +284,10 @@ fn resolve_binary_path(explicit_path: &Option<String>) -> Result<String> {
         // Collect all candidate paths from PATH, then prioritize them
         let mut candidates = Vec::new();
 
+        // DEBUG: Log PATH directories being considered
+        eprintln!("[TENDRIL DEBUG] PATH environment variable: {}", path_env);
+        eprintln!("[TENDRIL DEBUG] Searching for binaries: {:?}", binary_names);
+
         // Parse PATH and collect all plausible paths
         for path_dir in path_env.split(':') {
             for binary_name in &binary_names {
@@ -291,16 +295,37 @@ fn resolve_binary_path(explicit_path: &Option<String>) -> Result<String> {
 
                 // Categorize by priority (lower number = higher priority)
                 let priority = if path_dir.contains("/opt/homebrew/bin") {
+                    eprintln!(
+                        "[TENDRIL DEBUG] Found Homebrew path (priority 1): {}",
+                        full_path
+                    );
                     1 // Highest: macOS Homebrew (M1/M2/M3/M4 Macs)
                 } else if path_dir.contains("/.local/bin") {
+                    eprintln!(
+                        "[TENDRIL DEBUG] Found .local path (priority 2): {}",
+                        full_path
+                    );
                     2 // User-local installations
                 } else if path_dir.contains("/.cargo/bin") {
+                    eprintln!(
+                        "[TENDRIL DEBUG] Found .cargo path (priority 3): {}",
+                        full_path
+                    );
                     3 // Cargo installations
                 } else if path_dir.contains("/usr/local/bin") {
+                    eprintln!(
+                        "[TENDRIL DEBUG] Found /usr/local path (priority 4): {}",
+                        full_path
+                    );
                     4 // Linux standard location
                 } else if path_dir.contains("/usr/bin") {
+                    eprintln!(
+                        "[TENDRIL DEBUG] Found /usr/bin path (priority 5): {}",
+                        full_path
+                    );
                     5 // System binaries
                 } else {
+                    eprintln!("[TENDRIL DEBUG] Skipping non-standard path: {}", path_dir);
                     continue; // Skip non-standard locations
                 };
 
@@ -310,9 +335,22 @@ fn resolve_binary_path(explicit_path: &Option<String>) -> Result<String> {
 
         // Sort by priority and return the highest priority candidate
         candidates.sort_by_key(|(priority, _)| *priority);
-        if let Some((_, path)) = candidates.first() {
+        eprintln!(
+            "[TENDRIL DEBUG] All candidates after sorting: {:?}",
+            candidates
+        );
+
+        if let Some((priority, path)) = candidates.first() {
+            eprintln!(
+                "[TENDRIL DEBUG] Selected path (priority {}): {}",
+                priority, path
+            );
             return Ok(path.clone());
+        } else {
+            eprintln!("[TENDRIL DEBUG] No candidates found in PATH");
         }
+    } else {
+        eprintln!("[TENDRIL DEBUG] PATH environment variable not found");
     }
 
     // Fallback: Try common absolute paths