Feat: Add manual updates check, Settings tab, direct model upgrades, logs password redirection, fix engine version detection, and expand AI agent Guide tab

backend/services/system.py

@@ -132,20 +132,27 @@ def get_engine_version() -> dict:
     if git_info:
         return {**git_info, "type": "git"}
     
-    try:
-        binary = os.path.join(engine_path, "llama-server")
-        if not os.path.exists(binary):
-            binary = os.path.join(engine_path, "bin", "llama-server")
-        if not os.path.exists(binary):
-            binary = "llama-server"
-        
-        res = subprocess.run([binary, "--version"], capture_output=True, text=True, timeout=2)
-        if res.returncode == 0:
-            lines = res.stdout.strip().splitlines()
-            ver = lines[0] if lines else "unknown"
-            return {"version_text": ver, "type": "binary"}
-    except Exception:
-        pass
+    candidates = [
+        os.path.join(engine_path, "llama-server"),
+        os.path.join(engine_path, "bin", "llama-server"),
+        "/usr/local/bin/llama-server",
+        "/usr/bin/llama-server",
+        "llama-server"
+    ]
+    
+    for binary in candidates:
+        if binary != "llama-server" and not os.path.exists(binary):
+            continue
+        try:
+            res = subprocess.run([binary, "--version"], capture_output=True, text=True, timeout=2)
+            output = (res.stdout or "").strip() or (res.stderr or "").strip()
+            if output:
+                lines = output.splitlines()
+                ver = lines[0] if lines else "unknown"
+                return {"version_text": ver, "type": "binary"}
+        except Exception:
+            pass
+            
     return {"type": "unknown"}