Install plotly for the playground in the benchmark CI jobs

[FarhanAliRaza]

The benchmark CI jobs install the workspace with uv sync --no-dev --group bench --extra db. Since #7359, the playground imports plotly, which that install does not contain. So every benchmark that compiles the playground has failed since 2026-10-07 with ModuleNotFoundError: No module named 'plotly':

• benchmarks-daily: red every day since 2026-10-07. The browser, events, hmr and memory shards fail completely. Lifecycle (9 of 12) and exact (8 of 13) fail partly.
• macro-benchmarks: green, but 6 of its 7 benchmarks fail. Only lifecycle.import passes. The job exits 0 while one benchmark passes.

This PR adds plotly>=6.0,<7.0 to the bench dependency group. It uses the same range as examples/playground/pyproject.toml. Subjects built with --reflex already get plotly through SUBJECT_REQUIREMENTS.

Checked locally with the CI install (uv sync --no-dev --group bench --extra db in a fresh venv):

• with this change: reflex-bench run lifecycle.compile.warm gives ok · 3 samples;
• after uv pip uninstall plotly: failed, with ModuleNotFoundError: No module named 'plotly', the same error as CI.

The change touches only a dependency group and the lock file. It is not user-facing, so it needs skip-changelog.

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-13T19:21:50.683145Z	ab2c65e	PR opened

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[cubic-dev-ai]

No issues found across 2 files

_{View guided diff | Re-trigger cubic}

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: ab2c65eded

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[greptile-apps]

Confidence Score: 5/5

[Low impact] The PR appears safe to merge and supplies the missing Plotly dependency to benchmark CI.

Summary

Adds plotly>=6.0,<7.0 to the bench dependency group so workspace benchmarks can compile the playground.

• Benchmark installs now include Plotly for compiling the playground.

_{Reviews (1) · Last reviewed commit: "Install the playground's plotly dependen..." · Reviewed by Greptile}

[codspeed]

Merging this PR will not alter performance

⚠️ 14 benchmarks spent significant time in system calls

System calls cannot be consistently instrumented, so they are not included in the measure, which understates the real cost. Please switch to the Walltime instrument to accurately measure system calls.

Measurement and system calls

• test_get_state[memory]
• test_cli_startup[version]
• test_cli_startup[help]
• test_cli_startup[cloud_help]
• test_import_cli
• test_cli_startup[run_help]
• test_get_state[disk]
• test_state_manager_memory_modify
• test_set_state[disk]
• test_state_manager_memory_warm_get
• …and 4 more

✅ 148 untouched benchmarks

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_{Comparing FarhanAliRaza:farhan/bench-plotly (ab2c65e) with main (2640303)}