Agent Node guide simplification report — 2026-07-31

Scope
-----
- docs-site/docs/guide/agent-node.md
- docs-site/docs/en/guide/agent-node.md
- docs-site/docs/guide/runtimes.md
- docs-site/docs/en/guide/runtimes.md

Outcome
-------
- Chinese guide: 681 -> 160 lines.
- English guide: 682 -> 160 lines.
- Removed duplicated runtime installation tables, old preview history, fixed model/version
  examples, obsolete roadmap text, and repeated troubleshooting material.
- Kept only common node behavior and linked runtime-specific details to canonical pages.
- Corrected security wording: envRef may store the value in a mode-0600 node .env;
  permission defaults differ by runtime; a node config must not be copied across machines.
- Clarified current UI boundaries: Codex co-presence is preview-only, OpenCode is a task
  runtime, and shared Grok TUI support is not released.
- Preserved inbound legacy anchors for environment variables, loop scheduling, and
  reconnection after the guide rewrite.
- Restored three source-backed details: TOOLS/SYSTEM_PROMPT are config/CLI inputs rather
  than env vars; OpenCode's built-in Anthropic path does not support Bearer-only
  gateways; the Grok cross-link now targets the Grok runtime section.

Static/source gates
-------------------
PASS  git diff --check
PASS  both guides are <= 220 lines
PASS  all internal Markdown targets exist
PASS  balanced fenced code blocks
PASS  bilingual heading/section parity
PASS  package engine requires Node >=22.13.0 and Bun >=1.2.0
PASS  CLI source contains the documented create/start/stop/loop/goal/envRef commands
PASS  source confirms claude-agent-sdk permissionMode=auto while other standard
      runtime configs retain dangerouslySkipPermissions for compatibility
PASS  VitePress 1.6.4 Docker build on origin/main baseline and this candidate
PASS  all six preserved legacy fragments appear as exact ids in rendered HTML
PASS  stale phrase scan: old preview chain, v0.11 roadmap, fixed OpenCode version,
      grok-build-cli, ANET_CODEX_STDIO_DIRECT, universal permission default,
      and unsupported WeChat claims are absent

Test policy
-----------
Documentation-only change. No Docker image, daemon, Hub, model runtime, npm publish,
or production environment was invoked. This preserves user model quota and avoids
claiming runtime coverage from a prose-only change.
