add doc page for telemetry info and opt-out

[masenf]

No description provided.

[greptile-apps]

Greptile Summary

Adds a new API reference documentation page (docs/api-reference/telemetry.md) describing what anonymized usage data Reflex collects, how it's handled in Reflex Cloud, and how to opt out via rxconfig.py or environment variable. The page is wired into the existing API Reference sidebar section.

• The new doc page explains the telemetry data model (component/feature counts, version info, no source or runtime data) with links to the Privacy Policy and Terms of Service.
• Two opt-out methods are documented: the telemetry_enabled=False config option and the REFLEX_TELEMETRY_ENABLED environment variable (for commands run outside an app directory).

Confidence Score: 5/5

Docs-only change with no runtime logic; safe to merge

Both changed files are documentation and sidebar configuration. The new markdown page is factually accurate, the sidebar registration follows the same pattern as all other entries, and the only minor observation is a cosmetic inconsistency in the env-var example value (0 vs false).

No files require special attention

Important Files Changed

Filename	Overview
docs/api-reference/telemetry.md	New doc page describing telemetry data collection and opt-out methods; uses REFLEX_TELEMETRY_ENABLED=0 which differs from false used elsewhere in the codebase
docs/app/reflex_docs/templates/docpage/sidebar/sidebar_items/reference.py	Adds api_reference.telemetry to the API reference sidebar, consistent with how all other doc pages are registered

_{Reviews (1): Last reviewed commit: "add doc page for telemetry info and opt-..." | Re-trigger Greptile}

[codspeed-hq]

Merging this PR will not alter performance

✅ 24 untouched benchmarks

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_{Comparing masenf/telemetry-doc (68c1f76) with main (bf2deed)}

[picklelo]

lgtm