[openclaw] Unreachable remote MCP server makes Doctor lint fail and blocks Doctor-gated Gateway start

## Observed symptom [Bug]: an unreachable remote MCP server makes Doctor lint fail and blocks Doctor-gated Gateway startup ### Bug type Behavior bug (incorrect output/state without crash) ### Beta release blocker No ### Summary When a configured remote MCP server is temporarily unreachable, `openclaw doctor --lint` reports `core/doctor/runtime-tool-schemas` as an **error** and exits 1, the same as a broken local configuration. Anything that uses Doctor lint at `--severity-min error` as a pre-start readiness gate then refuses to start an otherwise healthy Gateway. ### Steps to reproduce 1. Configure an MCP server that depends on an outside service, for example a remote server behind `mcp-remote`: ```json ## Literal error text ``` unreachable remote MCP server makes Doctor lint fail and blocks Doctor-gated Gateway start ``` ## Version info 127.0.0, 2026.9.5, 2026.9.6 ## Environment GitHub issue openclaw/openclaw #162228; state=OPEN ## Trigger / context ### Bug type Behavior bug (incorrect output/state without crash) ### Beta release blocker No ### Summary When a configured remote MCP server is temporarily unreachable, `openclaw doctor --lint` reports `core/doctor/runtime-tool-schemas` as an **error** and exits 1, the same as a broken local configuration. Anything that uses Doctor lint at `--severity-min error` as a pre-start readiness gate then refuses to start an otherwise healthy Gateway. ### Steps to reproduce 1. Configure an MCP server that depends on an outside service, for example a remote server behind `mcp-remote`: ```json { "mcp": { "servers": { "remote": { "command": "npx", "args": ["-y", "mcp-remote", "https://<remote-host>/mcp"] } } } } ``` or a Streamable HTTP server whose URL refuses connections: ```js ## Source evidence - https://github.com/openclaw/openclaw/issues/162228 (2026-10-01T00:38:01Z) — GitHub issue #162228 (OPEN) ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:33:42Z - scout_id: C06f34f9e0e ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome.