[docs] AI Stack — Token Plan: add screenshots to the A-Z guide — VI + EN

[greennode-vdb]

Why

The images on the Token Plan pages were reported as "not syncing to GitBook". They are in fact fine — verified end to end:

• 14/14 refs on the Buy/Manage pages resolve, with correct filename casing (matters because GitBook runs on Linux and is case-sensitive, while Windows is not — a case mismatch renders locally and 404s after sync)
• all assets tracked and present on main
• every image on the live site returns http 200 image/png, and the git-blob-<sha> in each rendered URL matches the blob SHA on main, so GitBook is serving the current version, not a stale cache

The real problem was different: the A-Z guide had zero screenshots — the only Token Plan page with none, 24 sections of solid text. That is what read as broken image sync, especially since it is the page handed to end users.

What changed

Adds 8 screenshots per language to the A-Z guide, reusing the assets already published for the Buy/Manage pages, plus one new capture of the Package Detail modal.

Section	Image
2. Pick a plan	packages-list.png, view-detail-package.png (new)
4. Get the API key + Base URL	detail-tab-models.png, detail-tab-keys.png
6.1 View your purchased plans	my-token-plan-list.png
6.2 Create a key	Create-subscription-key.png
6.3 Auto-renew	turn-off-auto-renew.png
6.4 Delete a plan	delete-plan-alert.png

New asset committed to both Vietnamese/.gitbook/assets/Package-plan/ and English/.gitbook/assets/Package-plan/ under the same filename, so the two languages stay in parity.

Verification

30 image refs across all 8 Token Plan pages: 0 missing, 0 case mismatches. Both A-Z guides carry the 8 images at identical positions and still mirror at 24 headings each. Links, anchors, tables, and hint/tabs blocks all still pass.

Still missing a screenshot

Two spots in the A-Z guide have no asset available:

1. Section 3 — the Confirm & checkout screen (Plan name, Balance, Confirm & Pay). This is the step where money leaves the account, so it is the one most worth illustrating.
2. Section 7 — the Usage & Cost dashboard filtered by a subscription-key.

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