Add gather-hardware-info.sh — auto-detects most report fields

Reads /proc, /sys, and common CLI tools (lscpu, lsblk, lspci, lsusb) to
print a YAML block matching data/schema.json: device model (DMI on x86,
/proc/device-tree/model on ARM SBCs), form factor (best-effort — battery
presence, DMI chassis type, device-tree presence), CPU, RAM, root storage
type/size, WiFi chip (PCI, then USB, then falls back to driver name rather
than guessing wrong), ethernet. Fields it can't detect (archy_version,
install_method, status) are left as clearly-marked TODOs rather than
guessed. Local-only — no network calls, changes nothing.

Tested for real on this box (a QEMU VM): correctly identified it as a VM,
correctly fell back to "other" with a TODO for form_factor rather than
guessing, output validated as parseable YAML. Passes shellcheck clean.

Linked from the homepage, report.html, and CONTRIBUTING.md.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

site/style.css

@@ -38,6 +38,8 @@ a:hover { color: var(--accent); }
 
 header p { color: var(--muted); max-width: 70ch; }
 header .cta { color: var(--text); }
+header .cta-secondary { color: var(--muted); font-size: 0.85rem; max-width: 70ch; }
+header .cta-secondary code { background: var(--panel); padding: 0.1rem 0.35rem; border-radius: 3px; color: var(--text); }
 
 .controls {
   display: flex;