FAQ simplification
Date: 2026-07-31
Base: origin/main f78c9373

Scope
-----
- docs-site/docs/faq.md
- docs-site/docs/en/faq.md

Result
------
- Chinese FAQ: 424 -> 121 lines
- English FAQ: 424 -> 121 lines
- Removed duplicated provider/runtime tables, release history, long deployment
  recipes, speculative performance numbers, and roadmap promises.
- Removed stale Node 20 installation advice; the repository requires Node
  >=22.13.0.
- Removed the unsafe password-recovery recipe that directly deleted SQLite
  rows and local markers. The FAQ now documents only the audited
  `anet hub admin reset-user --username <username>` path.
- Corrected envRef wording: a mode-0600 .env may contain plaintext; envRef
  keeps the secret out of config.json rather than promising no disk storage.
- Kept short answers for installation, config locations, offline nodes,
  task/message semantics, token types, cross-machine identity, production,
  SQLite, SSE, and support channels.

Static verification
-------------------
- git diff --check: PASS
- each FAQ <= 150 lines: PASS
- stale/unsafe phrase negative scan: PASS
- every internal Markdown route resolves to an existing source page: PASS
- Node >=22.13.0 source gate: PASS
- CLI source gates for logs, hub stop, and admin reset-user: PASS

No Docker image or package was built. This is a Markdown-only rewrite with
source/static verification; no runtime, schema, API, or production state was
changed.
