The Screen Assisted Guided Experience.

Operator drives Start / Next / Back / End from a laptop. Projector renders fullscreen on the sanctuary display. Both poll the same state once a second, so they stay in lockstep without any networking infrastructure beyond the synagogue's existing wifi.

• Operator at /sage/[serviceId] — big NOW + UP NEXT preview cards, section rail, ⌘F find
• Projector at /sage/[serviceId]/present — clean, large, no chrome
• Window Management API picks the target display automatically (Chrome / Edge)
• Cross-window fullscreen via tap-anywhere or any-key fallback

Beyond paginated siddur pages, SAGE auto-builds slides for Torah aliyot (with the Etz Hayim cover on the right rail), sermon title cards with speaker name + tenant logo, leadership tables, ark-opening honors, English readings — all from the existing service-order metadata, no separate deck to maintain.

• InfoCard: "Aliyah 1 (Kohanim)" / "Maftir" / "Haftarah" with verse range + page label + honoree(s) Hebrew RTL + reader
• TitleCard: sermon / announcement / greeter speaker overlays
• LeadershipTable: 2-col table of every active service role assignment, sorted by display order
• Section header slides: optional auto-announce at every section transition ("Welcome to Pesukei D'Zimra")
• PowerPoint slide override: per-line-item image upload for custom slides — pixel parity with existing decks

Each siddur page is a row in the catalog: image scan + transliteration + English. Long prayers like Ashrei flip the right-rail thumbnail mid-prayer when the text crosses page boundaries. Region rectangles drawn on the page image highlight the active sub-slide — and an ink-density auto-pass divides any populated page into N bands matching the projector's pagination, so you get a moving 'you're here' cue out of the box.

• 65 Sim Shalom pages across 43 prayers ship pre-loaded for AA Saturday morning (Ashrei, Kaddish variants, Shema, Shirat HaYam, Nishmat, …)
• Hand-drawn region rectangles always win when present
• Auto-region fallback: ink-density scan + paragraph detection, language-agnostic
• Sub-slide count auto-derives from pagination — no manual numbering

Hebrew script auto-detects via Unicode range. The projector flips RTL, swaps to Frank Ruhl Libre serif, sizes for distance reading at 45pt floor. Section labels swap from "Transliteration" to "Hebrew" automatically. No admin choice required — the data drives it.

• Frank Ruhl Libre — bundled, no font fallback ambiguity
• RTL/LTR per-pane based on content script
• 45pt readable floor with clamp-up for larger displays
• Posture banner: rose 🧍 "Please Rise" / emerald 🪑 "Be Seated" when the catalog flags it

Section jump rail down the left side. NOW + UP NEXT cards with clickable region rectangles — click any block to jump the projector to that exact sub-slide. ⌘F find searches across slide title, section, Hebrew label, English, honor IDs. Display-readiness banner warns when the laptop can't see a second display before launch.

• 🛑 HOLD button → "Please stand by"
• 🪧 LOGO button → tenant logo holding slide
• Section overlay popup (Phase A in progress) — click section, see all slides in it, jump to any
• Service ETA panel + calibrate from the operator screen (Phase A in progress)

Beyond paginated prayers, SAGE supports projector-only content: Mi Sheberach instructions, kavanot, custom announcements, group readings. Quick-create from the run-of-service editor's Add Row modal — type content, click Create, the catalog item exists + the row links automatically. Sections can carry an optional header slide that auto-injects at section transitions.

• SAGE Insert category in the catalog — body text only, no page images required
• Quick-Create flow in the run-of-service editor — no detour through Settings
• Section header slides: synthesized at runtime, no run-of-service pollution
• PDF default: hide SAGE Inserts from the printed run-of-service (toggle to include)

Dedicated tenant.services.run_sage permission so synagogues can grant operator access to media-team volunteers without giving them service-edit rights. Implied by services.edit so existing Service Editor + Administrator roles auto-inherit.

• Per-tenant SAGE Operator system role pattern (used at AA today)
• Operator vs editor split — front-of-house vs back-of-house
• Permission tiering: view < run_sage; edit implies run_sage
• Audit log every advance, jump, calibration