d20f80112f
An admin who already had PicPeak installed before the opt-in reporting feature existed never gets asked — the setup wizard only runs once, on a brand-new instance. Adds a one-time modal, shown on the admin's next dashboard visit after updating, offering the same choice the wizard gives a new install. - New `product_usage_state.prompt_shown` column (migration 211) and UsageService.markPromptShown(), set on either outcome (enable or decline) from both this modal and the wizard step, so an installation is never asked twice regardless of which path it took. - New POST /admin/usage/prompt-seen endpoint. - Extracted the wizard's three-point pitch (UsageReportingPitch.tsx) so the modal and the wizard step share identical copy instead of drifting apart. - The modal never shows once participation is already active, and never shows a second time after either the wizard or the modal has been through it once. Depends on #1360 (the setup wizard step this reuses).