feat: add static css file for github pages analytics dashboards (#873)

[frano-m]

Summary

• Add self-contained static CSS file (static/analytics.css) for GitHub Pages analytics dashboards
• CSS matches the findable-ui design system (colors, spacing, typography, components)
• All values extracted from the MUI theme and component configuration
• Includes preview HTML file for visual testing (static/analytics-preview.html, excluded from npm package)

Closes #873

What's included

• Custom properties — colors, spacing, shadows, border-radius, typography font shorthands (all overridable per-consumer)
• Typography — all 16 theme variants as classes and CSS variables
• Layout — page container, 12-column grid with span utilities, responsive 2-column grid
• Components — header (3-area grid: left/center/right), cards, buttons (primary/secondary), divider, links, code
• Content — scoped element styles for h1-h4, p, ul/ol, li, img (opt-in via .fui-content)
• Color utilities — ink, primary, alert, info, success, warning
• Responsive — 768px and 1440px breakpoints matching the theme

Test plan

• Open static/analytics-preview.html in browser and verify visual match with findable-ui design system
• Verify responsive behavior at 768px and 1440px breakpoints
• Verify npm pack --dry-run includes static/analytics.css but excludes analytics-preview.html
• Verify CSS custom property overrides work (e.g. changing --fui-primary)

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds a self-contained static stylesheet to let GitHub Pages analytics dashboards adopt the findable-ui design system without bundling the full React/MUI library.

Changes:

• Introduces static/analytics.css with design-system-aligned tokens (CSS custom properties) and component/layout utility classes.
• Adds static/analytics-preview.html for manual visual verification of the CSS in a browser.
• Updates package.json publish config to include static/**/*.css in the npm package while excluding the preview HTML.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
static/analytics.css	New standalone CSS variables + utility/component styles for dashboards.
static/analytics-preview.html	New preview page to manually validate styles and responsiveness.
package.json	Publishes static CSS assets via the files allowlist.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

[frano-m]

@MillenniumFalconMechanic the header doesn't have a menu for mobile...

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

[Copilot]

.fui-code sets font family/size/line-height but doesn’t reset font-weight, so code text will inherit weight from its parent (e.g., 500 inside headings), which diverges from the design system baseline where code uses the body-400-2lines font (weight 400) plus mono family. Consider explicitly setting a normal font weight (and style) for .fui-code to keep code styling consistent regardless of where it’s used.

Suggested change

	font-size: 12px;
	font-size: 12px;
	font-style: normal;
	font-weight: 400;

[Copilot]

The PR description states “Typography — all 16 theme variants as classes and CSS variables”, but this stylesheet defines 15 typography shorthands/classes (matching src/theme/common/typography.ts). Please either add the missing variant (if one is intended) or update the documentation/claims to avoid confusion for consumers.