docs(tutorials): split setupDashClient into browser-safe core and Node wrapper

[thephez]

Mirror the upstream platform-tutorials refactor that separates setupDashClient.mjs into setupDashClient-core.mjs (browser-safe) and a thin Node wrapper, and register the new core file in the tutorial sync map.

Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com

Preview build: https://dash-docs-platform--144.org.readthedocs.build/en/144/

Summary by CodeRabbit

• Documentation
  • Updated the SDK client setup tutorial to show a two-module architecture that cleanly separates browser-safe core code from Node.js-specific setup for clearer guidance.
  • Added tutorial code mapping so code samples are linked and captioned appropriately for easier navigation and reference.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: aff2fcfe-97c3-4042-9874-2dd953ba44e8

📥 Commits

Reviewing files that changed from the base of the PR and between e9daefa and 43d89ee.

📒 Files selected for processing (1)

• docs/tutorials/setup-sdk-client.md

🚧 Files skipped from review as they are similar to previous changes (1)

• docs/tutorials/setup-sdk-client.md

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📝 Walkthrough

Walkthrough

The tutorial splits one setup module into two: setupDashClient-core.mjs (runtime-agnostic, browser-safe) and a Node-only setupDashClient.mjs wrapper. Export surface is reorganized (KEY_SPECS exported; key managers exported); dotenv loading removed from core; hex decoding uses a browser-safe hexToBytes(). Mapping file updated.

Changes

Cohort / File(s)	Summary
Tutorial Documentation docs/tutorials/setup-sdk-client.md	Updated examples and text to show two modules: setupDashClient-core.mjs (exports createClient, dip13KeyPath, KEY_SPECS, IdentityKeyManager, AddressKeyManager; removes dotenv; replaces Buffer.from(...,'hex') with hexToBytes()), and a Node-only setupDashClient.mjs wrapper that loads dotenv, defines clientConfig/setupDashClient(), and re-exports core exports.
Tutorial Mapping Configuration scripts/tutorial-sync/tutorial-code-map.yml	Added mapping entry linking the new setupDashClient-core.mjs code sample to docs/tutorials/setup-sdk-client.md.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

🐰 I split my module, neat and spry,
Core for browsers, Node says hi,
Hex to bytes, no buffers near,
Exports tidy, everything clear,
Hoppity hops—code ready to fly! 🚀

🚥 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 directly and clearly describes the main change: splitting setupDashClient into a browser-safe core module and a Node wrapper, which matches the core objective of the PR.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 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/tutorials/setup-sdk-client.md`:
- Around line 106-119: In the hexToBytes function, replace the deprecated
String.prototype.substr usage with slice to preserve behavior: change the
hex.substr(i * 2, 2) call in hexToBytes to hex.slice(i * 2, i * 2 + 2) so you
still extract two characters per iteration and keep the existing parseInt and
Number.isNaN checks unchanged.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

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

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b55f7231-d555-4b9d-82f5-87791a8803a6

📥 Commits

Reviewing files that changed from the base of the PR and between a284662 and e9daefa.

📒 Files selected for processing (2)

• docs/tutorials/setup-sdk-client.md
• scripts/tutorial-sync/tutorial-code-map.yml