Initial electronics inventory webapp

KV-store backed Express 5 app for tracking electronic components,
their arbitrary fields, and inventory locations (physical, BOM, digital).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/lib/api.mjs

@@ -0,0 +1,29 @@
+async function req(method, path, body) {
+	const opts = { method, headers: {} };
+	if (body !== undefined) {
+		opts.headers['Content-Type'] = 'application/json';
+		opts.body = JSON.stringify(body);
+	}
+	const res = await fetch(path, opts);
+	const data = await res.json();
+	if (!data.ok) throw new Error(data.error ?? 'Request failed');
+	return data;
+}
+
+// Fields
+export const get_fields     = () => req('GET', '/api/fields');
+export const create_field   = (body) => req('POST', '/api/fields', body);
+export const update_field   = (id, body) => req('PUT', `/api/fields/${id}`, body);
+export const delete_field   = (id) => req('DELETE', `/api/fields/${id}`);
+
+// Components
+export const get_components  = () => req('GET', '/api/components');
+export const create_component = (body) => req('POST', '/api/components', body);
+export const update_component = (id, body) => req('PUT', `/api/components/${id}`, body);
+export const delete_component = (id) => req('DELETE', `/api/components/${id}`);
+
+// Inventory
+export const get_inventory      = () => req('GET', '/api/inventory');
+export const create_inventory   = (body) => req('POST', '/api/inventory', body);
+export const update_inventory   = (id, body) => req('PUT', `/api/inventory/${id}`, body);
+export const delete_inventory   = (id) => req('DELETE', `/api/inventory/${id}`);

public/lib/dom.mjs

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+export function qs(scope, selector) {
+	if (typeof scope === 'string') return document.querySelector(scope);
+	return scope.querySelector(selector);
+}
+
+export function clone(template_id) {
+	return document.getElementById(template_id).content.cloneNode(true).firstElementChild;
+}
+
+export function set_text(el, selector, text) {
+	const target = typeof selector === 'string' ? el.querySelector(selector) : selector;
+	target.textContent = text;
+}
+
+export function show(el) { el.hidden = false; }
+export function hide(el) { el.hidden = true; }