feat: document TINYAUTH_AUTH_STANDALONE option

[jacekkow]

Documentation updates for feature from steveiliop56/tinyauth#710

Summary by CodeRabbit

• Documentation
  • Updated domain configuration guidance explaining conditional authentication cookie behavior based on standalone mode
  • Added documentation for new TINYAUTH_AUTH_STANDALONE configuration option controlling subdomain cookie behavior

[coderabbitai]

📝 Walkthrough

Walkthrough

Documentation updated to reflect a new authentication configuration option (TINYAUTH_AUTH_STANDALONE) that controls cookie behavior in standalone mode. The Domain Configuration guidance in getting-started and reference configuration documentation have been revised accordingly.

Changes

Cohort / File(s)	Summary
Authentication Configuration Documentation src/content/docs/docs/getting-started.mdx, src/content/docs/docs/reference/configuration.mdx	Added conditional guidance for Domain Configuration based on TINYAUTH_AUTH_STANDALONE setting; documented new config option with description and default value (false).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Poem

🐰 A cookie that switches its stance,
In standalone or shared-domain dance,
Docs now clarify when and why,
Auth's behavior, neat and spry,
Configuration wisdom at a glance!

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and specifically describes the main change: documenting the TINYAUTH_AUTH_STANDALONE option. It is concise and directly reflects the documentation updates made across two files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

📝 Coding Plan

• Generate coding plan for human review comments

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[coderabbitai]

🧹 Nitpick comments (1)

src/content/docs/docs/getting-started.mdx (1)

69-69: Add a direct reference link for faster discoverability.

Line [69] mentions TINYAUTH_AUTH_STANDALONE but doesn’t link to the configuration reference; adding a link would make this easier to follow.

✍️ Suggested doc tweak

-Tinyauth sets a cookie for the parent domain of the application URL, unless `TINYAUTH_AUTH_STANDALONE=true` is set. For example, if the application URL is `http://tinyauth.example.com`, the cookie is set for `.example.com`, enabling authentication across all subdomains. Below is an example of an ideal domain structure:
+Tinyauth sets a cookie for the parent domain of the application URL, unless [`TINYAUTH_AUTH_STANDALONE=true`](/docs/reference/configuration) is set. For example, if the application URL is `http://tinyauth.example.com`, the cookie is set for `.example.com`, enabling authentication across all subdomains. Below is an example of an ideal domain structure:

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@src/content/docs/docs/getting-started.mdx` at line 69, Replace the plain
mention of TINYAUTH_AUTH_STANDALONE in the Getting Started text with a direct
Markdown link to the configuration reference for that environment variable (wrap
`TINYAUTH_AUTH_STANDALONE=true` in a link to the existing configuration
docs/anchor for TINYAUTH_AUTH_STANDALONE) so readers can click through to the
config details from the Getting Started page.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@src/content/docs/docs/getting-started.mdx`:
- Line 69: Replace the plain mention of TINYAUTH_AUTH_STANDALONE in the Getting
Started text with a direct Markdown link to the configuration reference for that
environment variable (wrap `TINYAUTH_AUTH_STANDALONE=true` in a link to the
existing configuration docs/anchor for TINYAUTH_AUTH_STANDALONE) so readers can
click through to the config details from the Getting Started page.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: def4e910-bf84-4f93-82c9-d3152b0c6d4f

📥 Commits

Reviewing files that changed from the base of the PR and between cd98c92 and 6a0f6c5.

📒 Files selected for processing (2)

• src/content/docs/docs/getting-started.mdx
• src/content/docs/docs/reference/configuration.mdx