Update nico_arch_diagram and change it to SVG format

[Coco-Ben]

-e
Signed-off-by: Peter Gambrill pgambrill@nvidia.com

Description

Current version is out of date, and also doesn't scale well.

Type of Change

• Add - New feature or capability
• Change - Changes in existing functionality
• Fix - Bug fixes
• Remove - Removed features or deprecated functionality
• Internal - Internal changes (refactoring, tests, docs, etc.)

Related Issues (Optional)

Breaking Changes

• This PR contains breaking changes

Testing

• Unit tests added/updated
• Integration tests added/updated
• Manual testing performed
• No testing required (docs, internal refactor, etc.)

Additional Notes

[andreliuNV]

Review findings from the technical accuracy pass. I think this still needs changes before merge.

Blocker:

• The added SVG appears to include browser-extension injected JavaScript at the top: a <script type="application/ecmascript"> block that references navigator.geolocation, overrides Blob, and calls chrome.runtime. Please regenerate or sanitize the SVG so it contains only static diagram content.

Issue #1192 coverage:

• Temporal is still only an edge label, appears misspelled as Termporal, and is not modeled as a visible prerequisite box alongside PostgreSQL/Vault.
• I do not see NTP/chrony represented, even though the agent resolves carbide-ntp.forge and DHCP sends NTP servers.
• Persona entry points are still shown as specific clients rather than grouped by Operators/Tenants/Automation/Monitoring or the docs personas.
• Route Server no longer appears as a NICo-deployed Helm component, which is directionally correct, but I do not see an external optional route server/peering entity, so that item is only partially addressed.

I ran fern check --warnings on the PR head: 0 errors, with 2 unrelated warnings already present in the docs setup (unauthenticated redirects check skipped and the existing light-mode accent contrast warning).

[github-actions]

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