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Make synthetic screen recording a first-class, discoverable capability alongside real OS capture. For CLI / terminal / install-flow demos where commands and output are predictable, author a `terminal_scene` cut instead of driving a real screen recorder — deterministic, privacy-safe, pixel- perfect, and frame-accurate to narration cues. Components: - TerminalScene.tsx: window chrome, char-by-char typing, blinking cursor, scrolling output, non-blocking floating pills, spring-based reveals - ProviderChip.tsx: rotating badge overlay that cycles through provider names (used in AI-generated-motion scenes) - BackgroundVideoLayer + source_in_seconds + backgroundVideo props on every scene type — supports video-behind-component composition Discovery chain (six layers, so the next agent finds this without reading source code): 1. pipeline_defs/screen-demo.yaml — bump to 2.1, declare production_modes (real_capture, synthetic_terminal) with required_tools, scene_type, and agent_skills pointers 2. skills/pipelines/screen-demo/idea-director.md — mode-selection table at brief time; brief.metadata.production_mode contract 3. skills/pipelines/screen-demo/asset-director.md — reads production_mode and branches asset production (capture+overlays vs steps+narration+ pacing check) 4. .agents/skills/synthetic-screen-recording/SKILL.md — Layer 3 skill with step kinds (cmd/out/pause/pill), pacing rule, and the frozen-terminal failure mode captured from the showcase v3 retune 5. AGENT_GUIDE.md — TerminalScene added to Remotion routing; links SCENE_TYPES.md as the authoritative cut-type registry 6. remotion-composer/SCENE_TYPES.md — new cheat sheet of every cut.type and overlay.type with required fields, plus a "how to add a new scene type" section (candidates: ChatTranscript, EditorScene, PrReview, SlackThread, TicketBoard) Guardrail: - lib/verify_scene_pacing.py — reusable trace() and assert_alignment() helpers that mimic the TerminalScene frame math exactly. Fail loudly before render if steps burn through too fast or leave the scene frozen.