Show Hysteria stop errors and add live container logs viewer.

Co-authored-by: Cursor <cursoragent@cursor.com>

managers/hysteria_manager.py

@@ -91,12 +91,95 @@ class HysteriaManager:
         )
         return 'Up' in out
 
+    def get_logs(self, protocol_type=None, tail=200):
+        """Return recent docker logs for the Hysteria container."""
+        name = self._container_name(protocol_type or self.protocol)
+        tail = max(20, min(int(tail or 200), 2000))
+        out, err, code = self.ssh.run_sudo_command(
+            f"docker logs --tail {tail} --timestamps {name} 2>&1",
+            timeout=30,
+        )
+        text = (out or err or '').strip()
+        if code != 0 and not text:
+            text = f'(no logs: exit {code})'
+        return text
+
+    def get_container_diagnostics(self, protocol_type=None):
+        """Inspect why the container is stopped / unhealthy."""
+        name = self._container_name(protocol_type or self.protocol)
+        fmt = (
+            '{{.State.Status}}|{{.State.Running}}|{{.State.ExitCode}}|'
+            '{{.State.OOMKilled}}|{{.State.Error}}|{{.State.FinishedAt}}|'
+            '{{.State.StartedAt}}'
+        )
+        out, _, code = self.ssh.run_sudo_command(
+            f"docker inspect -f '{fmt}' {name} 2>/dev/null"
+        )
+        diag = {
+            'status': 'unknown',
+            'running': False,
+            'exit_code': None,
+            'oom_killed': False,
+            'error': '',
+            'finished_at': '',
+            'started_at': '',
+            'recent_logs': '',
+            'error_summary': '',
+        }
+        if code != 0 or not (out or '').strip():
+            diag['status'] = 'missing'
+            diag['error_summary'] = 'Container not found'
+            return diag
+
+        parts = (out or '').strip().split('|')
+        while len(parts) < 7:
+            parts.append('')
+        status, running, exit_code, oom, err, finished, started = parts[:7]
+        diag['status'] = status or 'unknown'
+        diag['running'] = str(running).lower() == 'true'
+        try:
+            diag['exit_code'] = int(exit_code)
+        except Exception:
+            diag['exit_code'] = None
+        diag['oom_killed'] = str(oom).lower() == 'true'
+        diag['error'] = (err or '').strip()
+        diag['finished_at'] = (finished or '').strip()
+        diag['started_at'] = (started or '').strip()
+        diag['recent_logs'] = self.get_logs(protocol_type, tail=40)
+
+        # Build human-readable summary for the UI badge
+        if diag['running']:
+            diag['error_summary'] = ''
+        elif diag['oom_killed']:
+            diag['error_summary'] = 'OOM killed (out of memory)'
+        elif diag['error']:
+            diag['error_summary'] = diag['error']
+        elif diag['exit_code'] not in (None, 0):
+            # Pull last meaningful log line
+            last = ''
+            for line in reversed((diag['recent_logs'] or '').splitlines()):
+                line = line.strip()
+                if line:
+                    last = line
+                    break
+            if last:
+                # strip docker timestamp prefix if present
+                if ' ' in last and last[0].isdigit():
+                    last = last.split(' ', 1)[-1]
+                diag['error_summary'] = f"exit {diag['exit_code']}: {last[:180]}"
+            else:
+                diag['error_summary'] = f"exited with code {diag['exit_code']}"
+        elif diag['status'] and diag['status'] != 'running':
+            diag['error_summary'] = f"status: {diag['status']}"
+        return diag
+
     def get_server_status(self, protocol_type=None):
         protocol_type = protocol_type or self.protocol
         exists = self.check_protocol_installed(protocol_type)
         running = self.check_container_running(protocol_type)
         meta = self._read_metadata() if exists else {}
         clients = self._read_clients() if exists else []
+        diag = {}
 
         # Auto-migrate older installs (bridge NAT / userpass / missing BBR+obfs)
         if exists:
@@ -120,6 +203,15 @@ class HysteriaManager:
                     meta = self._read_metadata()
             except Exception as e:
                 logger.warning('Hysteria migrate failed: %s', e)
+                diag = {'error_summary': f'migrate failed: {e}'}
+
+        if exists:
+            try:
+                diag = self.get_container_diagnostics(protocol_type)
+                running = bool(diag.get('running'))
+            except Exception as e:
+                logger.warning('Hysteria diagnostics failed: %s', e)
+                diag = {'error_summary': str(e)}
 
         return {
             'container_exists': exists,
@@ -132,6 +224,10 @@ class HysteriaManager:
             'base_protocol': self.PROTOCOL,
             'instance': self._instance_index(protocol_type),
             'container_name': self._container_name(protocol_type),
+            'error': diag.get('error_summary') or '',
+            'exit_code': diag.get('exit_code'),
+            'container_status': diag.get('status') or '',
+            'recent_logs': diag.get('recent_logs') or '',
         }
 
     # ===================== HELPERS =====================