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Agent skill

Fantasia Floating Windows

by vishiri in vishiri/fantasia-archive

In-renderer floating Window surfaces: Teleport to body, useFaFloatingWindowFrame, per-edge viewport margins, resize geometry and clamp, z-index band 5000–5999, Vitest teleport stub, custom…

GPL-3.0Auto-check passedTesting & QA

Install Fantasia Floating Windows

skills CLI
$ npx skills add vishiri/fantasia-archive --skill fantasia-floating-windows -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install vishiri/fantasia-archive fantasia-floating-windows --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/vishiri/fantasia-archive.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.cursor/skills/fantasia-floating-windows .claude/skills/fantasia-floating-windows && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
fantasia-floating-windows
GitHub stars
409
Token cost
~885 tokens
SKILL.md length
233 words
Files
1
Skills in repo
35
Repo updated
First seen
Licence
GPL-3.0

At a glance

In-renderer floating Window surfaces: Teleport to body, useFaFloatingWindowFrame, per-edge viewport margins, resize geometry and clamp, z-index band 5000–5999, Vitest teleport stub, custom…

  • Works in 7 steps: Teleport — _FaFloatingWindowBodyTeleport… → Composable —… → Z-index — 5000–5999 session counters;… → …
  • Changing Window components
  • SKILL.md covers What they are, Architecture (checklist), Shared window families… and Open/close Transition (Custom…, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Fantasia Floating Windows is an agent skill from vishiri/fantasia-archive. In-renderer floating Window surfaces: Teleport to body, useFaFloatingWindowFrame, per-edge viewport margins, resize geometry and clamp, z-index band 5000–5999, Vitest teleport stub, custom fa-floatingWindowPop open/close transition. Use when adding or changing Window components, frame behavior, or src/scripts/floatingWindows helpers.

Its SKILL.md is about 890 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering Unit testing. It works with Vitest. The repository describes itself as: A world-builder's best friend! The licence is GPL-3.0.

When your agent uses it

  • Changing Window components
  • Src/scripts/floatingWindows helpers

Example prompts

  • “/fantasia-floating-windows”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Teleport — _FaFloatingWindowBodyTeleport under document.body. Transition wraps single element: Teleport → Transition → frame root
  2. Composable — useFaFloatingWindowFrame(visibleRef, layout?) from src/scripts/floatingWindows/: center, title drag, resize, ResizeObserver…
  3. Z-index — 5000–5999 session counters; below 6000 (modals/chrome). Bands: standard 5000–5799, projectStyling 5800–5899, app noteboard…
  4. Layout — I_FaFloatingWindowFrameLayout / FA_FLOATING_WINDOW_FRAME_DEFAULT_LAYOUT: fractions, min/max, per-edge margins
  5. Resize — faFloatingWindowResizeGeometry.ts, faFloatingWindowResizeClamp.ts; _FaFloatingWindowFrameResizeHandles
  6. Modals — no registerComponentDialogStackGuard for Window*
  7. i18n — i18n//floatingWindows/

What it can do on your machine

Read from SKILL.md and the folder at commit 26d4648. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Fantasia Floating Windows loads about 885 tokens when it runs. Until then it costs about 91 tokens; SKILL.md has 233 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~91
When it runs · the whole SKILL.md, loaded when a task matches
~885

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from vishiri/fantasia-archive at commit 26d4648, republished under its GPL-3.0 licence (© vishiri). 233 words, ~885 tokens.

Download SKILL.mdSave it as .claude/skills/fantasia-floating-windows/SKILL.md (or your agent's skills folder).
name
fantasia-floating-windows
description
In-renderer floating Window* surfaces: Teleport to body, useFaFloatingWindowFrame, per-edge viewport margins, resize geometry and clamp, z-index band 5000–5999, Vitest teleport stub, custom fa-floatingWindowPop open/close transition. Use when adding or changing Window* components, frame behavior, or src/scripts/floatingWindows helpers.

Fantasia Archive — in-renderer floating windows

What they are

Window* under src/components/floatingWindows/ — movable/resizable position: fixed in same renderer. Not extra Electron BrowserWindow instances.

Architecture (checklist)

  1. Teleport — _FaFloatingWindowBodyTeleport under document.body. Transition wraps single element: Teleport → Transition → frame root
  2. Composable — useFaFloatingWindowFrame(visibleRef, layout?) from src/scripts/floatingWindows/: center, title drag, resize, ResizeObserver, frameStyle + z-index
  3. Z-index — 5000–5999 session counters; below 6000 (modals/chrome). Bands: standard 5000–5799, projectStyling 5800–5899, app noteboard 5900–5949, project noteboard 5950–5999. raiseZ on open/interaction
  4. Layout — I_FaFloatingWindowFrameLayout / FA_FLOATING_WINDOW_FRAME_DEFAULT_LAYOUT: fractions, min/max, per-edge margins
  5. Resize — faFloatingWindowResizeGeometry.ts, faFloatingWindowResizeClamp.ts; _FaFloatingWindowFrameResizeHandles
  6. Modals — no registerComponentDialogStackGuard for Window*
  7. i18n — i18n/<locale>/floatingWindows/

Shared window families (_shared*)

  • _sharedWindowStyling/ — createWindowStylingFrame, Monaco session, color panel, keybind help, persist; WindowAppStyling / WindowProjectStyling bind app vs project state only.
  • _sharedWindowNoteboard/ — createAssembledWindowNoteboard, persist, factory bind; WindowAppNoteboard / WindowProjectNoteboard thin over shared assembly.
  • Extend shared functions/ + per-window *_manager.ts — no monolithic createWindowAppStyling / createWindowProjectStyling.

Open/close Transition (Custom app CSS / WindowAppStyling)

  • faFloatingWindowPopTransition.ts: FA_FLOATING_WINDOW_POP_TRANSITION_MS, class fa-floatingWindowPop-*
  • SCSS in WindowAppStyling.floatingWindowPopTransition.unscoped.scss — not stock q-transition--scale (breaks Electron/Monaco Playwright)

Project Noteboard (WindowProjectNoteboard)

  • Text debounce 380 ms; frame 280 ms. Frame-only save may race text debounce → persistProjectNoteboardPartialSilent merges in-memory textarea when patch omits text
  • floatingWindowZLayer: 'projectNoteboard' → 5950–5999

Project Custom CSS (WindowProjectStyling)

  • KV project_styling_*; frame 280 ms, body 380 ms; persistProjectStylingPartialSilent merges in-memory CSS on frame-only race

Tests

  • Geometry: faFloatingWindowResizeGeometry.vitest.test.ts
  • Component Vitest: stub teleport binding + <div><slot /></div>
  • Playwright: data-test-locator on teleported frame

Custom app CSS help (WindowAppStyling)

? menu lists --fa-color-* names — logic in src/scripts/faTheme/

© vishiri, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .cursor/skills/fantasia-floating-windows of vishiri/fantasia-archive.

Open the folder on GitHubat commit 26d4648

Compare with similar skills

Fantasia Floating Windows next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Fantasia Floating Windows compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Fantasia Floating Windows this skillvishiri/fantasia-archive409—~885Automated safety check: PassGPL-3.0
Test Writing WorkflowiOfficeAI/AionUi33k1 repos~1.2kAutomated safety check: PassApache-2.0
Vitestsupabase/supabase111k12 repos~1.1kAutomated safety check: PassApache-2.0
Test GuardamElnagdy/guard-skills1.3k2 repos~2.1kAutomated safety check: PassMIT
Adding LLM MCP ToolsTriliumNext/Trilium38k—~2.5kAutomated safety check: PassAGPL-3.0
Concept Page Test Writerleonardomso/33-js-concepts67k—~5.5kAutomated safety check: PassMIT

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  • Caveman Compress

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  • Cavecrew

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  • Caveman Help

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Works with

Categories

Questions about Fantasia Floating Windows

What does Fantasia Floating Windows do?

In-renderer floating Window surfaces: Teleport to body, useFaFloatingWindowFrame, per-edge viewport margins, resize geometry and clamp, z-index band 5000–5999, Vitest teleport stub, custom…. Fantasia Floating Windows is an agent skill from vishiri/fantasia-archive. In-renderer floating Window surfaces: Teleport to body, useFaFloatingWindowFrame, per-edge viewport margins, resize geometry and clamp, z-index band 5000–5999, Vitest teleport stub, custom fa-floatingWindowPop open/close transition.

When should I use Fantasia Floating Windows?

Fantasia Floating Windows fits situations like: changing Window components; src/scripts/floatingWindows helpers.

How do I install Fantasia Floating Windows in Claude Code?

Run `npx skills add vishiri/fantasia-archive --skill fantasia-floating-windows -a claude-code`. Or copy the skill folder (.cursor/skills/fantasia-floating-windows in vishiri/fantasia-archive) into .claude/skills/fantasia-floating-windows in your project. Claude Code loads it when a task matches its description.

How do I install Fantasia Floating Windows in Codex?

Run `npx skills add vishiri/fantasia-archive --skill fantasia-floating-windows -a codex`. Or copy the skill folder (.cursor/skills/fantasia-floating-windows in vishiri/fantasia-archive) into .agents/skills/fantasia-floating-windows in your project. Codex loads it when a task matches its description.

Can I use Fantasia Floating Windows in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add vishiri/fantasia-archive --skill fantasia-floating-windows -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fantasia-floating-windows, .gemini/skills/fantasia-floating-windows, .github/skills/fantasia-floating-windows and .opencode/skills/fantasia-floating-windows in your project.

What does Fantasia Floating Windows need to run?

SKILL.md names no scripts, command-line tools or credentials: Fantasia Floating Windows is instructions for the agent only.

Does Fantasia Floating Windows access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Fantasia Floating Windows safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Fantasia Floating Windows use?

Fantasia Floating Windows is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Fantasia Floating Windows use?

About 885 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Fantasia Floating Windows?

Skills that share tags, products or a category with Fantasia Floating Windows: Test Writing Workflow (iOfficeAI/AionUi, 33k stars), Vitest (supabase/supabase, 111k stars), Test Guard (amElnagdy/guard-skills, 1.3k stars) and Adding LLM MCP Tools (TriliumNext/Trilium, 38k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Fantasia Floating Windows?

vishiri (a GitHub user) maintains it in vishiri/fantasia-archive, which has 409 GitHub stars. The repository holds 35 skills in this directory. The repository was last updated on October 7, 2026.

Source: vishiri/fantasia-archive on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.