[docs] AI Stack — Token Plan: document both Base URL forms (Anthropic vs OpenAI) — VI + EN

[greennode-vdb]

Follow-up to #32.

Problem

Every Token Plan page gave only the OpenAI-standard endpoint (https://tokenplan.api.greennode.ai/v1), so a reader setting up Claude Code or Claude Desktop had no correct Base URL — and the A-Z guide / Manage pages told them to "confirm the applicable endpoint with the support team" instead of stating it.

The correct values are already published in the AI Coding guides (commit 48ff1bab, getting-started.md / bat-dau.md):

Tool standard	Token Plan Base URL
OpenAI (Cursor, Continue.dev, OpenCode, Codex, LiteLLM, OpenAI SDK…)	https://tokenplan.api.greennode.ai/v1 — with /v1
Anthropic (Claude Code, Claude Desktop, Anthropic SDK)	https://tokenplan.api.greennode.ai — no /v1

This PR makes the Token Plan section say the same thing.

What changed

README (VI + EN) — the Subscription Endpoint bullet now names the shared host and splits the two forms instead of presenting /v1 as the only option.

A-Z guide (VI + EN)

• Section 5 now opens with a standard → Base URL table, so the rule is stated before any tool-specific steps.
• New section 5.6, "Anthropic-standard tools (Claude Code, Claude Desktop)" — ANTHROPIC_BASE_URL / ANTHROPIC_AUTH_TOKEN blocks for macOS/Linux/WSL and Windows PowerShell, matching the style of 5.2.
• 5.1 and 5.2 relabelled as the OpenAI-standard path so their /v1 values aren't read as universal.
• Section 2 (Package Detail) and section 4 (the "3 values to jot down" table) list both forms.
• Section 5.5: the 404 Not Found row now covers the real failure — the Base URL doesn't match your tool's standard — rather than only "missing /v1".
• Section 6.2: the 3-value block an Admin hands to each member shows both URLs with a comment marking which is which.
• Removed the closing warning hint that now duplicated 5.6 sitting directly above it.

Buy / Manage (VI + EN) — Subscription Endpoint description and the PAYG-vs-Token-Plan comparison table list both forms (comparison table split into two Base URL rows, Compatibility row now OpenAI SDK / Anthropic SDK). The Claude Code note gives the actual URL and env var names instead of deferring to support.

Verification

All 8 Token Plan files pass: 0 dead relative links, 0 dead heading anchors (including the new #56-… cross-references and the diacritic-stripped Vietnamese anchors GitBook generates), every table has a separator row, hint/tabs/tab blocks balanced, no unclosed code fences. VI and EN A-Z guides still mirror at 24 headings each.

Files

• English/ai-stack/token-plan/{README,a-z-guide,buy-token-plan,manage-token-plan}.md
• Vietnamese/ai-stack/token-plan/{README,huong-dan-a-z,mua-goi-token-plan,quan-ly-token-plan}.md

🤖 Generated with Claude Code