Update documentation links and extend error messages

[lmagyar]

Proposed Changes

Better link to TS docs, better error messages for users who don't read docs.

Related Issues

Summary by CodeRabbit

• Documentation
  • Updated the Tailscale Funnel “share_homeassistant” setup step to reference the correct link, and adjusted the related link definitions accordingly.
• Bug Fixes
  • Improved Home Assistant sharing failure messages when Tailscale HTTPS or Funnel support is disabled.
  • Enhanced the exit-node configuration conflict message when both exit-node settings are enabled, making it clearer.

[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: 29c22224-6676-4812-90b8-46d96db23528

📥 Commits

Reviewing files that changed from the base of the PR and between 7a96647 and 221c8c7.

📒 Files selected for processing (1)

• tailscale/rootfs/etc/s6-overlay/s6-rc.d/post-tailscaled/run

✅ Files skipped from review due to trivial changes (1)

• tailscale/rootfs/etc/s6-overlay/s6-rc.d/post-tailscaled/run

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Walkthrough

Updated share_homeassistant Funnel failure messages, Funnel documentation links, and one exit-node configuration error message.

Changes

Share Home Assistant Funnel guidance

Layer / File(s)	Summary
Runtime exit messages tailscale/rootfs/etc/s6-overlay/s6-rc.d/share-homeassistant/run	The share-homeassistant run script emits split bashio::exit.nok messages for disabled HTTPS and Funnel support, including documentation guidance.
Funnel doc links tailscale/DOCS.md	The Funnel setup instructions and link reference now use the funnel-node-attribute URL.
Exit-node error text tailscale/rootfs/etc/s6-overlay/s6-rc.d/post-tailscaled/run	The post-tailscaled script emits a multi-line bashio::exit.nok message for the exit-node and advertise-exit-node configuration conflict.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• hassio-addons/app-tailscale#627: Also updates tailscale/DOCS.md link references for Tailscale-related guidance.
• tailscale/rootfs/etc/s6-overlay/s6-rc.d/share-homeassistant/run and tailscale/DOCS.md are closely connected here through the updated Funnel guidance.
• tailscale/rootfs/etc/s6-overlay/s6-rc.d/post-tailscaled/run is a related startup-message change in the same add-on boot flow.

Suggested reviewers

• frenck

Poem

A bunny hopped through docs and scripts 🐇
To tune the words that failure scripts ship
When Funnel sleeps or exit-node rules bite
The guide now points and messages read right

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main changes: documentation link updates and expanded error messages.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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