Disable session replay on docs surfaces

[juandolealt]

Summary

• Disable PostHog session replay for the shared docs and developers initializer.
• Keep a fail-closed privacy configuration that masks all text and inputs if replay is enabled accidentally.
• Disable replay network timing, headers, bodies, console logs, canvas, and font capture.
• Add focused regression tests for the replay privacy contract.

Validation

• CI=true pnpm exec vitest run src/lib/posthog-privacy.test.ts (2 tests passed)
• pnpm run check:types
• Biome check on touched files
• git diff --check

Note

PR #676 also edits PostHogSetup.tsx. If it lands later, preserve this replay-disabled configuration during conflict resolution.

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Project	Deployment	Actions	Updated (UTC)
tempo-docs	Ready	Preview, Comment	Jul 17, 2026 7:28pm