docs: update tinybird CLI installation and auth steps

[devnucleus950]

This PR updates the Tinybird CLI installation and authentication steps to use the modern flow, as the old interactive method via pip/pipx is deprecated.

Fixes dubinc/dub#3727

Summary by CodeRabbit

• Documentation
  • Simplified Tinybird CLI installation and authentication setup. The installation process now uses a single command, and authentication has been streamlined to use an admin Auth Token instead of the interactive flow.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0f636a08-0cbc-4ab2-beb0-9ec72a620a8b

📥 Commits

Reviewing files that changed from the base of the PR and between d150364 and f5a1ccb.

📒 Files selected for processing (1)

• docs/local-development.mdx

📝 Walkthrough

Walkthrough

Updated Tinybird CLI installation and authentication instructions by replacing the conditional brew/pipx installation method and tb auth --interactive flow with a unified curl https://tinybird.co | sh installation followed by tb login with Auth Token authentication.

Changes

Cohort / File(s)	Summary
Documentation Update docs/local-development.mdx	Simplified CLI installation and authentication instructions by removing legacy brew/pipx conditional setup and tb auth --interactive flow, replacing them with direct curl-based installation and tb login with token-based authentication.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related issues

• #3727: Directly addresses the reported issue that tb auth --interactive is broken on legacy CLI and documentation still references the outdated installation and authentication flow. The changes implement the suggested fix to use curl https://tinybird.co | sh followed by tb login.

Poem

🐰 An updater's tale of documentation bright,
Old auth flows vanish into the night,
With curl and login, the path is clear,
Fresh docs arrive—no more CLI fear! ✨

🚥 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 accurately summarizes the main change: updating Tinybird CLI installation and authentication steps in documentation.
Linked Issues check	✅ Passed	The PR addresses all coding requirements from issue #3727: replacing deprecated interactive auth with curl installation and tb login flow.
Out of Scope Changes check	✅ Passed	All changes in the PR are directly related to updating the Tinybird CLI installation and authentication documentation as specified in issue #3727.
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

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[coderabbitai]

Actionable comments posted: 1

🧹 Nitpick comments (1)

docs/local-development.mdx (1)

168-175: Align Tinybird setup wording across docs

This section now uses the new flow, but docs/self-hosting.mdx:103-117 still references a different installation path. Consider updating both docs to the same Tinybird setup flow to avoid conflicting instructions.

🤖 Prompt for AI Agents

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

In `@docs/local-development.mdx` around lines 168 - 175, The Tinybird install
instructions are inconsistent across docs: update the "Install the Tinybird CLI"
section (the paragraph that shows `curl https://tinybird.co | sh` and `tb
login`) to match the new flow used in local-development, and edit the older
self-hosting Tinybird section to use the identical wording and steps (same
install command, authentication via `tb login` and admin token) so both docs
present the same setup flow.

🤖 Prompt for all review comments with AI agents

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

Inline comments:
In `@docs/local-development.mdx`:
- Around line 170-172: Update the code fence metadata for the command block that
currently uses "bash terminal" to match the repository's convention "bash
Terminal"; locate the triple-backtick fenced block containing the curl
https://tinybird.co | sh command and replace its opening fence metadata so it
reads "bash Terminal" (keep the command itself unchanged).

---

Nitpick comments:
In `@docs/local-development.mdx`:
- Around line 168-175: The Tinybird install instructions are inconsistent across
docs: update the "Install the Tinybird CLI" section (the paragraph that shows
`curl https://tinybird.co | sh` and `tb login`) to match the new flow used in
local-development, and edit the older self-hosting Tinybird section to use the
identical wording and steps (same install command, authentication via `tb login`
and admin token) so both docs present the same setup flow.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: ae1e8142-a026-4586-a283-61e279063a3f

📥 Commits

Reviewing files that changed from the base of the PR and between 2241f8b and d150364.

📒 Files selected for processing (1)

• docs/local-development.mdx