Markdown-to-single-file-HTML report renderer. Six modes (status, incident, plan, explainer, financial, pr) selected by report type, crossed with three audience tiers (expert, basic, learn) derived from the active output style. The basic and learn tiers enrich the HTML with mermaid flowcharts, worked examples, and plain-language primers; the expert tier stays dense. Zero external JS/CSS framework dependencies — inline SVG charts, a font-CDN exception for Korean readability, and a tier-gated mermaid-CDN exception. Self-contained output for email attachment, print, and offline viewing.
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name
moai-domain-html-report
description
Markdown-to-single-file-HTML report renderer. Six modes (status, incident, plan, explainer, financial, pr) selected by report type, crossed with three audience tiers (expert, basic, learn) derived from the active output style. The basic and learn tiers enrich the HTML with mermaid flowcharts, worked examples, and plain-language primers; the expert tier stays dense. Zero external JS/CSS framework dependencies — inline SVG charts, a font-CDN exception for Korean readability, and a tier-gated mermaid-CDN exception. Self-contained output for email attachment, print, and offline viewing.
when_to_use
Use when a markdown report must be rendered into a single self-contained HTML file; mode is selected by report type and audience tier is derived from the active output style.
This skill is a terminal renderer that converts a markdown report into a single self-contained HTML file. It accepts any markdown body produced by a text, analysis, or reporting workflow and emits one .html file that opens directly in a browser, attaches to email, prints cleanly, and works offline.
Core principles:
Zero external JS libraries (no Chart.js, D3, htmx)
Zero external CSS frameworks (no Tailwind, Bootstrap)
Inline SVG renders all charts directly
A font-CDN <link> is permitted for Korean readability
A mermaid-CDN <script> is permitted only in the basic and learn audience tiers, always paired with a no-JS fallback (see § Diagram Policy). The expert tier remains strictly zero-JS.
This skill does not replace the markdown output. Markdown remains the single source of truth; HTML rendering is an additional branch that operates on it.
The asymmetry principle — HTML is rich, the markdown twin is lean
The two artifacts this skill produces serve different readers and therefore carry different amounts of content. They are not the same document in two syntaxes:
Artifact
Reader
Content rule
.html
the human
Enriched. May carry MORE than the source markdown — plain-language primers, mermaid diagrams, worked examples, analogies, glossary callouts — scaled by the audience tier (§ Audience Tiers).
.md twin
the agent (context)
Lean. Carries ONLY the load-bearing facts: findings, decisions, numbers, tables, action items. Never the tier enrichment.
[HARD] Audience-tier enrichment scales the HTML and NEVER the markdown twin. Raising the tier from expert to learn must not add a single primer, analogy, or worked example to the .md twin — that enrichment exists to teach a human, and it is pure token cost to an agent that already understands the domain. A learn-tier report and an expert-tier report of the same source produce markdown twins of substantially the same size; only their HTML differs.
Input
Argument
Required
Default
Description
markdown
yes
—
The markdown body to convert
mode
yes
—
status | incident | plan | explainer | financial | pr
audience
no
derived from the active output style
expert | basic | learn — see § Audience Tiers
slug
no
auto-derived from the title
Output filename prefix
output_path
no
<cwd>/reports/<slug>-<YYYYMMDD>.html
Output path
font_stack
no
per-mode default
Font mapping override
mode and audience are orthogonal: mode picks the report's structure (which sections exist), audience picks its depth (how much explanation each section carries). Every mode renders at every tier.
Output
Two files at <cwd>/reports/<slug>-<YYYYMMDD>.{html,md}:
The .html file — the human-facing artifact:
Size: ≤ 50KB at the expert tier; ≤ 120KB at the basic / learn tiers (the enrichment budget — diagrams and examples cost bytes)
External dependencies: one font-CDN <link> + two preconnect hints (Korean fonts), plus one mermaid-CDN <script> at the basic / learn tiers only
Self-contained: opens directly in a browser, email-attachable, print-clean, and readable offline (diagrams degrade to their fallback — see § Diagram Policy)
The .md twin — the agent-facing artifact (below).
Markdown twin (agent-context artifact)
Alongside every .html file, write a markdown twin at the same path with the .md extension (<slug>-<YYYYMMDD>.md). The HTML file is the human-viewing artifact; the markdown twin is the machine-context artifact, and per § The asymmetry principle it is deliberately leaner than the HTML, not merely the same content with tags stripped.
What the twin contains — the load-bearing facts only:
The findings, decisions, numbers, and conclusions
Tables (as markdown tables) and any figures the numbers depend on
Action items, owners, and open questions
The mermaid source of a diagram only when the diagram encodes information the prose does not (a real state machine, a real dependency graph). A diagram that merely re-illustrates a sentence for a beginner is enrichment — it is omitted.
What the twin OMITS — everything the audience tier added for the human:
Plain-language primers and jargon glossaries
Analogies and motivating narratives
Worked step-by-step examples that re-derive a stated result
All HTML tags, inline CSS, <script> blocks, and SVG chart markup
Consumption rule (token discipline): whenever a report is needed as context — an Agent() spawn prompt, a follow-up analysis turn, a cross-session Read of a past report — use the .md twin, NEVER the .html file. Raw HTML wastes tokens on tags, style blocks, and SVG paths that carry no information the markdown does not already have (typically 3-5x the tokens for identical content), and the tier enrichment on top of that is pure cost to an agent.
Legacy HTML without a twin: when only an .html file exists, extract the load-bearing facts into markdown first (strip tags, <style>, <script>, SVG chart markup, and the tier enrichment; convert <table> to markdown tables) and inject the extraction — not the raw HTML — into the agent prompt or context. Write the extraction next to the HTML as its .md twin so the cost is paid once.
After rendering — report back to the user
Once the .html file and its .md twin are written, the response MUST do two things:
Summary — print a concise summary of what was rendered: the mode, the audience tier (and what it was derived from — the active output style, or an explicit audience argument), the report title, and the key sections or figures the file contains (a short paragraph or a few bullets). Do not paste the full HTML into the response.
Auto-open — immediately open the rendered file in the user's default browser by running the platform-appropriate opener via the Bash tool. Do NOT ask the user to type ! open themselves; run the opener directly so the report appears in one step on macOS, Windows, and Linux alike:
macOS uses open, Linux uses xdg-open (fall back to printing the absolute path when no opener/display is available — headless or WSL environments), Windows Git-Bash/MSYS uses start. If the opener command fails or the permission is denied, print the absolute path so the user can open the file manually.
Always auto-open the report (or, failing that, print its absolute path) — a rendered report the user cannot locate or open has no value.
Audience Tiers
The report adapts its depth to the reader. The tier is derived from the active output style unless an explicit audience argument overrides it.
Resolving the tier
Read outputStyle from the settings chain — .claude/settings.local.json (highest) → .claude/settings.json → ~/.claude/settings.json → hardcoded default — and map it:
Active output style
Audience tier
Reader
MoAI
expert
An engineer who knows the domain and wants the signal, fast
MoAI-Easy
basic
Someone who codes occasionally; the jargon still costs them effort
MoAI-Learn
learn
Someone who wants to genuinely understand the concept, not just the outcome
(any other / unresolvable)
expert
Safe default — never enrich unasked
An explicit audience argument always wins over the derived value.
What each tier renders
Element
expert
basic
learn
Section prose
Dense, terse
Dense + a one-paragraph plain-language lead per section
Same as basic + why-it-matters framing
Jargon
Used bare
First use is defined inline — 함수 (function) style, term followed by a plain-language gloss
Same as basic + a glossary callout box
Diagrams
Inline SVG charts only (as today)
+ one mermaid flowchart of the report's main flow
+ multiple mermaid diagrams — flow, sequence, and/or state — one per concept that has structure worth seeing
Examples
None (numbers speak)
One worked example per key claim, with concrete inputs and outputs
Same as basic + a step-by-step walkthrough that derives the result, not just states it
Analogies
None
Sparingly, where a concept is genuinely unfamiliar
Freely — an everyday analogy per new concept
Closing
Action items
Action items + "what to check yourself"
Action items + self-check questions the reader can answer to confirm they understood
HTML size budget
≤ 50KB
≤ 120KB
≤ 120KB
.md twin
lean
lean — identical rule
lean — identical rule
The last row is the invariant, restated because it is the one that is easy to violate: no tier adds anything to the markdown twin. Enrichment is an HTML-only concern.
Authoring the enrichment (basic / learn)
Explain, then state. At basic / learn, a section that opens with a raw metric is a miss. Open with one sentence saying what the metric is and why the reader should care, then give the number.
Define every term on first use. Everyday-language gloss first, canonical English term in parentheses: 배포 (deployment) — 만든 코드를 실제 사용자에게 내보내는 일. After the first definition the bare term is fine.
Prefer a diagram to a paragraph when the content is a flow, a sequence, or a state machine. That is exactly what these tiers exist for.
Ground every example. A worked example uses real inputs from the report, not foo / bar.
Never pad. Enrichment means more understanding, not more words. A section a beginner already grasps needs no primer.
Diagram Policy
Charts and diagrams follow two different rules depending on what they are.
Inline SVG charts (all tiers)
Quantitative charts — bar, variance, timeline — are hand-authored inline SVG, exactly as today. They work everywhere: browser, email, print, offline. This is unchanged and applies at every tier.
Mermaid diagrams (basic / learn tiers only)
Structural diagrams — flowcharts, sequences, state machines — are rendered with mermaid, and mermaid needs JavaScript. To keep the single-file, offline-capable promise, mermaid is emitted in a hybrid form: the CDN renders it richly in a browser, and a no-JS fallback keeps it readable everywhere else.
Emit all three parts together:
The mermaid source, in a <pre class="mermaid"> block — this is what the CDN renders, and it stays human-readable as plain text when it does not.
One mermaid-CDN <script type="module"> — placed once per document, at the end of <body>, initialized with the design-token palette so diagrams match the report (--clay accent on --ivory background).
A <noscript> fallback — either a hand-authored inline SVG of the same diagram, or, when the diagram is simple enough that its source reads clearly, a short prose summary of the flow. Never leave <noscript> empty.
<preclass="mermaid">
flowchart TD
A[Markdown source] --> B{Audience tier}
B -->|expert| C[Dense HTML]
B -->|basic / learn| D[Enriched HTML + diagrams]
C --> E[Lean .md twin]
D --> E
</pre><noscript><!-- inline SVG of the same flow, or a prose summary --><p>Flow: the markdown source branches on audience tier — expert renders dense HTML,
basic/learn render enriched HTML with diagrams. Both paths emit the same lean .md twin.</p></noscript><scripttype="module">import mermaid from"https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs";
mermaid.initialize({
startOnLoad: true,
theme: "base",
themeVariables: {
primaryColor: "#FAF9F5", /* --ivory */primaryTextColor: "#141413", /* --slate */primaryBorderColor:"#D97757", /* --clay */lineColor: "#87867F", /* --g500 */secondaryColor: "#E3DACC", /* --oat */tertiaryColor: "#F0EEE6"/* --g100 */
}
});
</script>
Degradation matrix (what the reader actually sees)
Context
expert
basic / learn
Browser, online
SVG charts
SVG charts + rendered mermaid diagrams
Browser, offline
SVG charts
SVG charts + <noscript> fallback (SVG or prose)
Email client (JS stripped)
SVG charts
SVG charts + <noscript> fallback
Print
SVG charts
SVG charts + fallback (mermaid does not render to print reliably)
The expert tier's strict zero-JS guarantee is untouched — the mermaid exception is tier-gated and never fires there.
This skill permits a single font-CDN <link> as the only external dependency, in service of Korean readability.
System-font-only rendering would fracture consistency across operating systems (macOS: Apple SD Gothic Neo, Windows: Malgun Gothic), so a font CDN is required for predictable Korean typography.
Render the executive summary result as an HTML report for Hanul Engineering week 11.
Example 2: financial statements
Convert the financial-statement result into an HTML report.
Example 3: incident report
Summarize the payment-gateway 502 outage as an HTML incident report. Severity is SEV-2.
Example 4: PR description document
Turn the realtime notification channel integration pull request into an HTML review document.
Example 5: tier derived from the active output style
Render the caching-layer design as an HTML report.
With MoAI-Easy active, this resolves to the basic tier: each section opens with a plain-language lead, a mermaid flowchart shows the cache read/write path, and every key claim carries a worked example. With MoAI active, the same request resolves to expert and renders dense. The .md twin is the same lean artifact either way.
Example 6: explicit tier override
Render the incident report as HTML for the expert audience — the on-call engineers already know the system.
The explicit audience: expert wins over the derived tier, so no primers or diagrams are added even under MoAI-Learn.
Non-goals
Does not replace the markdown default output — HTML is an additional rendering branch.
Does not pull in external libraries such as React, Vue, a Tailwind CDN, Chart.js, or D3. The only sanctioned external dependencies are the font CDN (all tiers) and the mermaid CDN (basic / learn tiers, always with a <noscript> fallback — § Diagram Policy). Charting stays inline SVG at every tier; mermaid never replaces a chart.
Does not introduce a build step (webpack, vite, esbuild).
Does not split the human artifact across multiple files — the report is a single .html. The .md twin is a different artifact for a different reader, not a second half of the report.
Does not enrich the markdown twin. Audience-tier depth is an HTML-only concern (§ The asymmetry principle).
External design-system theming (Tailwind-CDN-based brand-token application) is out of scope for the bundled templates here, which are strictly zero-dependency. The design_system parameter is not honored by these templates.
