presentation-stage-grilllisted

# Grill the talk on stage Use when `stage-grill` is the current gate. - Read repo instructions, `PRESENTATION-BRIEF.md`, `STORY.md`, `STORYBOARD.md`, `GRILL-LOG.md`, current speaker notes, and actual page renders before judging the talk. - Always explore the files instead of asking the user for discoverable facts. - Ask one question at a time when a consequential stage decision is unresolved. - Include a recommended answer with each question. - Use `references/autonomous-stage.md` for the autonomous fallback when the user is unavailable (headless run) or the remaining stage decisions are resolvable from the deck and upstream artifacts — apply `references/stage-questions.md` yourself, resolve each finding with a concrete change and confidence level, and flag any low-confidence load-bearing edit for later human review instead of silently rewriting it. - When the user refers to the page they're currently viewing without naming it, resolve it through the engine's "current page" mechanism (e.g. `current-slide` for open-slide) before judging. - Use actual renders and current speaker notes, not outline-only summaries. - Apply `references/stage-questions.md` to representative prototype pages first, then to the full deck when available. - Enforce presenter-language constraints, timed trimming, and existing-versus-remaining distinction. - **Speakability & Spoken-First Phrasing**: Speaker notes must be written in natural, fluent spoken phrasing that the presenter can deliver aloud com