[rocprofiler-compute] Standalone roofline should create HTML instead of PDF

[vedithal-amd]

Motivation

• Eiminate the dependency on kaleido and plotly_get_chrome by moving towards plotly native HTML image roofline chart generation

• Update help message, documentation and CHANGELOG to advertise this change

Technical Details

PDF generation using plotly requires kaleido and google chrome browser which are dependencies which we want to eliminate.

Switch to plotly native HTML generation to generate HTML files for roofline charts. Example is attached below

empirRoof_gpu-0_FP32.html

JIRA ID

Test Plan

Test Result

Ensure standalone roofline works and all roofline tests work

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[Copilot]

Pull request overview

This pull request eliminates dependencies on kaleido and Chrome by switching from PDF to HTML generation for roofline charts in standalone mode. The change leverages Plotly's native HTML export functionality instead of the image export that required external dependencies.

Key changes:

• Replaced write_image() calls with write_html() for roofline chart generation
• Updated all test files to expect .html files instead of .pdf files
• Comprehensively updated documentation to reflect HTML output format

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/roofline.py	Replaced write_image() with write_html() for standalone roofline chart generation, removed width/height parameters
src/utils/roofline_calc.py	Updated comment from "PDF" to "HTML"
src/argparser.py	Updated help text for --roofline-data-type option to reference HTML instead of PDF
tests/test_utils.py	Updated file extension check from .pdf to .html
tests/test_profile_general.py	Updated all test expectations, assertions, and comments to reference HTML files instead of PDF files
docs/how-to/profile/mode.rst	Comprehensively updated documentation to reference HTML output format
docs/how-to/analyze/standalone-gui.rst	Updated roofline analysis documentation to reference HTML
README.md	Removed note about libnss3.so dependency requirement for PDF generation
CHANGELOG.md	Added entry documenting the change from PDF to HTML output

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[cfallows-amd]

Approving for rocprof-compute end of things. We are waiting for some HPC team feedback as well for the changes in outlook/teams to be addressed as needed.