Add self-hosted Environment Variables page to sidebar nav

[SunsetDrifter]

Summary

The self-hosted Environment Variables reference page (src/pages/selfhosted/environment-variables.mdx, served at /selfhosted/environment-variables) had zero inbound links — it wasn't in either sidebar, no page linked to it, and there was no redirect. It was only reachable by typing the URL directly or via search, despite existing since #553.

This adds it to the Maintenance group in the docs sidebar, immediately after "Configuration Files", grouping the two configuration-reference pages together.

Note: the existing "Environment Variables" entry under the client section (/client/environment-variables) is a different page about the client daemon; this one covers self-hosted Management/Signal/Relay/Dashboard variables.

Summary by CodeRabbit

• Documentation
  • Added "Environment Variables" link to the self-hosted NetBird documentation under the Maintenance section, positioned between Configuration Files and Scaling Your Deployment.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: be0b4de0-cb77-4cbf-9ac0-bcd4a7732408

📥 Commits

Reviewing files that changed from the base of the PR and between f83b1b6 and eed2876.

📒 Files selected for processing (1)

• src/components/NavigationDocs.jsx

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📝 Walkthrough

Walkthrough

A new "Environment Variables" navigation link pointing to /selfhosted/environment-variables is added under the "Maintenance" group in the "SELF-HOST NETBIRD" section of docsNavigation. An existing if condition in the NavigationGroup click handler is reformatted across multiple lines with no logic changes.

Changes

Navigation Docs Update

Layer / File(s)	Summary
Nav entry addition and click handler reformat src/components/NavigationDocs.jsx	Inserts an "Environment Variables" link under the Maintenance section (between "Configuration Files" and "Scaling Your Deployment") and reformats the NavigationGroup click handler if condition with line breaks only — no logic change.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• netbirdio/docs#786: Modifies the same NavigationGroup click/toggle handling logic in src/components/NavigationDocs.jsx, overhauling collapsible nav group expand behavior in the same area touched by this PR's reformat.

Suggested reviewers

• heisbrot
• jnfrati

Poem

🐇 A new path appears in the warren of links,
"Environment Variables" — clever, me thinks!
Between configs and scaling it finds its snug place,
While an if got some newlines to tidy its face.
Hop hop, the docs grow with each nibble of change! 🌿

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding an Environment Variables page link to the sidebar navigation for the self-hosted section.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/selfhosted-env-vars-nav

Warning

There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure.

🔧 ESLint

If the error stems from missing dependencies, add them to the package.json file. For unrecoverable errors (e.g., due to private dependencies), disable the tool in the CodeRabbit configuration.

src/components/NavigationDocs.jsx

Oops! Something went wrong! :(

ESLint: 9.39.4

TypeError: Converting circular structure to JSON
--> starting at object with constructor 'Object'
| property 'configs' -> object with constructor 'Object'
| property 'flat' -> object with constructor 'Object'
| ...
| property 'plugins' -> object with constructor 'Object'
--- property 'react' closes the circle
Referenced from:
at JSON.stringify ()
at file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/shared/config-validator.js:308:45
at Array.map ()
at ConfigValidator.formatErrors (file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/shared/config-validator.js:299:23)
at ConfigValidator.validateConfigSchema (file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/shared/config-validator.js:330:84)
at ConfigArrayFactory._normalizeConfigData (file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/config-array-factory.js:676:19)
at ConfigArrayFactory._loadConfigData (file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/config-array-factory.js:641:21)
at ConfigArrayFactory._loadExtendedShareableConfig (file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/config-array-factory.js:946:21)
at ConfigArrayFactory._loadExtends (file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/config-array-factory.js:814:25)
at ConfigArrayFactory._normalizeObjectConfigDataBody (file:///node_modules/.pnpm/@eslint+eslintrc@3.3.5/node_modules/@eslint/eslintrc/lib/config-array-factory.js:752:25)

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