steps: add screenshot and locked template steps

[MoustaphaCamara]

Summary by CodeRabbit

• Documentation
  • Expanded user guide with a multi-block illustrated introduction showing steps for experiments and templates.
  • Added new figure and caption demonstrating "Steps on an experiment template" alongside existing visuals.
  • Clarified that templates can include steps and an option to lock them so entries from a template inherit read-only steps.

[coderabbitai]

Walkthrough

Replaces a single-line guidance with expanded, illustrated documentation showing steps on experiments and experiment templates, adds a captioned figure for template steps, and explains a locking option that makes template steps read-only for new entries. (≤50 words)

Changes

Cohort / File(s)	Summary
Documentation Enhancement doc/user-guide.rst	Replaces a plain sentence with expanded content including two figures (steps on an experiment, steps on an experiment template) with captions and an explanation of a template step locking mechanism that makes inherited steps read-only for new entries.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 I hopped through the docs to make things clear,
Two figures now show each step, near and dear.
Lock the template steps so copies stay true,
A guide made brighter — a small rabbit's review. 🥕

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The pull request title "steps: add screenshot and locked template steps" directly corresponds to the main changes in the changeset. The raw summary confirms that the PR adds HTML and LaTeX figure blocks (screenshots) showing steps on templates, and introduces documentation about the locking mechanism for template steps. The title is concise, specific, and uses meaningful descriptive terms that clearly convey the primary changes without vague or generic language. A teammate reviewing pull request history would immediately understand that this is a documentation update focused on visualizing steps functionality and explaining the locked template feature.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch mouss-5-3-steps

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 7c4a726 and e8ffe34.

⛔ Files ignored due to path filters (2)

• doc/img/steps-on-experiment.png is excluded by !**/*.png
• doc/img/steps-on-template.png is excluded by !**/*.png

📒 Files selected for processing (1)

• doc/user-guide.rst (1 hunks)

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

• doc/user-guide.rst

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