Respect "make auto segments" when resetting segments

[DedeHai]

fix for #4136

Summary by CodeRabbit

• Improvements
  • Optimized segment reset functionality with simplified request handling, improving system performance and reliability during segment management operations without affecting user experience.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 5357a179-76e3-45be-9ac1-04e8ccfc7d93

📥 Commits

Reviewing files that changed from the base of the PR and between 221964e and 79913d3.

📒 Files selected for processing (2)

• wled00/data/index.js
• wled00/json.cpp

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Walkthrough

The "Reset segments" action in rSegs() now sends {"rSeg": true} to the backend instead of a manually constructed segment array. In deserializeState, a new rSeg root-flag handler suspends the LED strip, calls makeAutoSegments(true), resumes, and sets stateChanged.

Changes

rSeg Reset-Segments API

Layer / File(s)	Summary
rSeg flag: UI sender and backend handler wled00/json.cpp, wled00/data/index.js	deserializeState now checks root["rSeg"] and, when truthy, suspends the strip, calls strip.makeAutoSegments(true), resumes, and sets stateChanged. rSegs() in the UI is simplified to post {"rSeg": true} instead of building a full segment-array payload.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~5 minutes

🚥 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 describes the main change: adding support for respecting the 'make auto segments' setting during segment reset operations, which is the core purpose of the modifications in both the UI and backend code.
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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