No, not as a replacement for native Figma or PowerPoint files. The README explicitly limits PPTX editability and identifies HTML as the primary delivery format.

• “The relationship with Claude Design” lists HTML, MP4, GIF, editable PPTX, and PDF as outputs, but that does not imply full design-file interoperability.
• The Limitations section explicitly says it does not support layer-level editable PPTX-to-Figma conversion and that the output cannot be dragged into Keynote to change text positions.
• The capability table promises that PPTX retains “text boxes,” which is closer to partial structural preservation than complete layer, layout, and effect editing.
• The project insight notes that font, layout, animation, transparency, and interaction may be lost during PPTX, PDF, or video conversion.

It is suitable for quickly producing an HTML deck and a partially editable presentation draft. If the acceptance criterion is element-by-element refinement by a designer, keep a native Figma or PowerPoint workflow.

No, not as a system that reliably produces 90-level high-fidelity work from a blank brand. The README explicitly acknowledges that quality falls to roughly 60–65 points when starting with no brand context.

• The introduction says that providing a logo, palette, and UI screenshots lets the skill understand the brand; without them, the six thumbnails, three real directions, and 84-style library are only a fallback.
• The Limitations section directly states that quality drops to 60–65 points for a completely blank brand and calls designing high-fidelity work from nothing a last resort.
• The Junior Designer workflow depends on assumptions, placeholders, reasoning, and multiple early show-and-tell steps; one vague sentence cannot replace that context.
• The project insight also says that without brand assets, references, or explicit content constraints, outputs may become generic or “AI slop.”

It can still help explore an initial brand direction, but it does not meet your required quality floor. You would need to provide brand context or accept an exploratory rather than production-ready role.

Yes, because it combines a single-file HTML prototype, device framing, and interaction validation in one agent workflow instead of producing only static screenshots.

• The “What it can do” section lists App/Web interactive prototypes with “single-file HTML, real iPhone bezel, clickable, and Playwright validation,” with a typical duration of 10–15 minutes.
• The installation section gives an almost identical example: “做个 AI 番茄钟 iOS 原型，4 个核心屏幕要真能点击”.
• The “Junior Designer Workflow” requires showing assumptions, placeholders, and early drafts, then checking the browser flow with Playwright before delivery. This fits validating screen transitions and key paths.

The output is still an HTML prototype, not a Swift or SwiftUI project ready for App Store submission. Native navigation, permissions, and real-device behavior must be implemented separately.

Yes, because the six-to-three exploration flow, appearance ledger, and factual design check directly address your need for direction comparison and repetition control.

• The README’s 3.0 description says to generate six thumbnails first and then turn three into real designs. The capability table further describes three design logics with two candidates each, enabling side-by-side comparison instead of committing to one concept.
• In the “Tonight’s Dinner” case, the appearance ledger noticed that five of the last six deliveries used sans-serif headlines, so the new version selected a serif typeface.
• In the “Thirty-Six Views of Mount Fuji” case, the design check noticed that two first screens used the same artwork and replaced the asset in one version. This shows that the check can lead to a concrete fix rather than only a vague aesthetic comment.
• The project insight says design_lint checks repeated colors and repeated skeletons across versions and produces Keep, Fix, and Quick Wins guidance.

It can reduce visual repetition, but the appearance ledger is a limited local record of prior work, not a complete team design system or long-term aesthetic model.

Yes, because your animation falls within the medium-complexity timeline model of Stage and Sprite, and the requested formats are explicitly supported.

• The “Motion Design Engine” section lists Stage, Sprite, useTime, useSprite, interpolate, and Easing, and says one command can export MP4, GIF, 60fps-interpolated output, and a music-backed final video.
• The capability table lists timeline animation outputs as MP4 at 25fps or interpolated 60fps, palette-optimized GIF, and background music, with a typical duration of 8–12 minutes.
• The security and data-flow section says the design, rendering, and MP4 export path runs 100% locally with zero network access and zero keys by default.
• The Limitations section excludes Framer Motion-level complex 3D, physics simulation, and particle systems; your requirements do not cross that boundary.

The real prerequisite is a working local browser, Node, ffmpeg, and consistent font environment. The README does not promise identical encoding results across machines.

Yes for the core local workflow, provided you do not enable cloud TTS or AI video review and do not ask the agent to capture external reference websites.

• The “Security and Data Flow” section explicitly says design, rendering, and MP4/PDF/PPTX export run 100% locally with zero network access, zero keys, and no telemetry.
• New local taste records and the appearance ledger are written only to ~/.huashu-design/ and are never uploaded, which fits keeping brand context and prior visual choices local.
• Cloud capabilities are isolated under scripts/cloud/, use your own key, and require explicit --yes confirmation on first use, so they are not part of the default outbound path.
• The README also says external URLs are accessed only when the agent is asked to capture reference works for a reference board, making external references an additional data boundary.

This satisfies the requirement that assets not be sent to the author’s server, but it does not automatically satisfy enterprise-wide controls for every model API, cache, browser request, or outbound connection.