Forms learn to celebrate

[AllTerrainDeveloper]

What this brings

Success screen designer — every message confirmation gets a visual gallery of nine styles (plain, simple, minimalistic, card, check mark, confetti, fireworks, sparkles, typewriter), each configurable: heading with merge tags, emoji, accent colour, intensity, optional "fill it in again" button. Picking a preset plays it full-screen over the builder through the exact renderer visitors get (src/success.ts, shared with the form bundle); the no-JS fallback renders the same markup statically. New atf_success_styles filter for third-party styles.

Device & browser analytics — aggregate device / browser / OS tallies per form (_atf_tech meta: counters over coarse classes, never a UA string, never a per-visitor row), a "Devices and browsers" report panel with share bars and per-device conversion, per-form privacy switches (Settings → Analytics), an atf_record_tech per-request veto for consent plugins, updated suggested privacy-policy text, and a demo population with realistic browser weights so the mobile-converts-worse pattern is a true finding.

Repeater error precision — a failing repeater emits one error per failing control (rep.row.sub keys) ahead of its row-level summary; the exact box goes red with its own message and aria-invalid, the failing row's card border follows, the container wears a ring, and the error summary indents a repeater's problems under its own line (client and no-JS render). The client validates rows itself on blur/submit and mirrors the sanitiser's drop-all-empty-rows rule. Plus the add-button gap the :where(button) reset had stripped.

Fixes — star ratings no longer light all five (row-hover matched the gaps between stars) nor display a three as a two (:checked ~ label unlit the clicked star's own label); button label colours now survive site themes that repaint button:hover.

Testing

• 715 PHPUnit tests green (new: success screen contract, UA classifier, tech tallies + gating, per-control repeater errors, nested summary render)
• 369 vitest tests green (new: success renderer + effects, repeater sub marking, nested summary)
• PHPCS clean; docs (hooks-reference.md, architecture.md) updated

🤖 Generated with Claude Code

https://claude.ai/code/session_0119U4sRRWGcTQdwYreTwpAp