feat: simplify the RDP buyer presentation

[abrichr]

Summary

• reduce the default Execute presentation to four buyer-facing stages
• keep the exact nine-step workflow open by default with its real resolution, check, policy, input, and effect facts
• move raw reports, hashes, timeline, graph, media, and architecture links into one closed technical-evidence panel
• replace the video with the exact artifact regenerated by fix: clarify the RDP proof presentation openadapt-flow#324
• move the scrubber below the video so it does not cover the application content

Exact artifact bindings

• MP4: c8df573bd0edbf139d4b5718ee14f2bf35b7e69331bfd9c5bc592dbf2e351504
• timeline: b668275ad7308f359380aa1bcb89ce98b7ae49673b36c4491330c399b2472403
• manifest: bb38218d7cb4cbcb31b6e188737071380f373fd8449f6ed42521f930bb32ec95
• program graph remains 7cb346cabe49b1077b9eaa960257d32f6a9262401fcf7443218e7726a7203570

Verification

• 183 website tests passed
• exact presentation validator passed for all four presentations
• production build passed
• public JSON allowlist tests passed
• desktop and mobile visual review passed
• source RDP manifests and program graph hash did not change

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