fix: Resolve marketing landing page defects after PR #505

[IanFrelinger]

Summary

Fixes user-facing defects in the marketing landing page at site/index.html that were introduced or present after PR #505 merged. All fixes maintain static HTML/CSS-only approach (no build step) and ensure the page works correctly when served from /site as GitHub Pages root and for local testing.

Changes

• Asset paths for GitHub Pages — Vendored brand SVGs (ashlar-logo-chaos.svg, ashlar-terminal-preview.svg) under site/assets/brand/ and updated all HTML references from ../assets/brand/ to assets/brand/ so assets resolve when site/ is served as web root
• SDK options accuracy — Replaced invented AddAshlar(options => { options.LocalFirst = true; options.AuditTrail = AuditLevel.Full; options.CertificationRequired = true; }) with real AddAshlarClient(baseUrl: "http://localhost:5000") examples grounded in actual AshlarHostingOptions and ServiceCollectionExtensions
• Audit API sample honesty — Rewrote nested auditTrail JSON to match real POST /api/copilot/task and GET /api/trust/dashboard shapes per docs/TesterQuickstart.md (taskId, sourceId on trust log, not falsely precise nested structure)
• Brand compliance — Removed gold class from Cloud pricing "Coming soon" tier (gold is certification-only per assets/brand/BRAND.md)
• Contact CTA — Replaced dead mailto:hello@ashlar.dev with working https://github.com/IanFrelinger/Ashlar/discussions link (ashlar.dev has no DNS)
• Docs drift — Updated site/README.md to reference ashlar-og-flat-1200x630.png instead of older ashlar-social-card-1280x640.png

Testing

Static HTML verification

cd site
python3 -m http.server 8000
# Verify at http://localhost:8000

• ✅ All asset references resolve correctly when site/ is served as root
• ✅ Logo SVG (assets/brand/ashlar-logo-chaos.svg) loads in header and favicon
• ✅ Terminal preview SVG (assets/brand/ashlar-terminal-preview.svg) loads in bento grid
• ✅ No broken image placeholders
• ✅ "Talk commercial" CTA links to GitHub Discussions (working path)
• ✅ Cloud pricing tier no longer misuses gold class

Asset path verification

cd site
forfilein$(grep -oE '(href|src)="assets/brand/[^"]*"' index.html | cut -d'"' -f2);do
[ -f"$file" ] &&echo"$file: EXISTS"||echo"$file: MISSING"done

All referenced assets exist under site/assets/brand/.

Code sample accuracy

• ✅ SDK examples now use AddAshlarClient(baseUrl) per src/Ashlar.Client/ServiceCollectionExtensions.cs
• ✅ Audit API sample reflects CopilotTaskRequest/Response shapes from application/src/Ashlar.API/Endpoints/
• ✅ No invented property names (LocalFirst, AuditTrail, CertificationRequired removed)

Testing strategy (blast radius)

Static documentation/marketing content only. No runtime code changes.

• make kernel-coverage-gate — Not applicable (no kernel code changes)
• make kernel-gate — Not applicable (no kernel code changes)
• make test-prod-style — Not applicable (no production code changes)

Checklist

• make test passes locally — N/A (static content only)
• Documentation updated (site/README.md OG card reference corrected)
• No TODO or NotImplementedException left unresolved — N/A (no code)
• Breaking changes are documented — N/A (additive fix)

Release

• Not a versioned release — skip

Notes

GitHub Pages deployment readiness

After merge, the landing page will work correctly when GitHub Pages is enabled:

1. Settings → Pages → Source: Deploy from branch
2. Branch: master → Folder: /site
3. Available at: https://ianfrelinger.github.io/Ashlar/

All asset paths are now relative to site/ as root, so images and SVGs will load correctly.

Verification commands

# Local testingcd site && python3 -m http.server 8000
# Verify assets exist
ls site/assets/brand/
# Expected: ashlar-logo-chaos.svg ashlar-terminal-preview.svg