Link source expense/invoice from account transaction rows

Each transaction that was posted from an expense or invoice now shows
an 'Open expense →' or 'Open invoice →' link to the source record's
detail page. The sourceExpenseId/sourceInvoiceId fields were already
loaded — just needed the UI affordance.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.env.example

@@ -21,3 +21,7 @@ BODY_SIZE_LIMIT=26214400
 
 # Company Links favicon fetching (set false to disable outbound fetches in offline dev)
 FAVICON_FETCH_ENABLED=true
+
+# Paperless-ngx integration (optional — leave blank to disable)
+PAPERLESS_URL=
+PAPERLESS_TOKEN=

src/lib/server/db/schema.ts

@@ -18,7 +18,7 @@ import {
 // ── Enums ──────────────────────────────────────────────
 
 export const companyRoleEnum = pgEnum('company_role', ['admin', 'manager', 'user', 'viewer', 'hr', 'accountant']);
-export const expenseStatusEnum = pgEnum('expense_status', ['pending', 'approved', 'rejected']);
+export const expenseStatusEnum = pgEnum('expense_status', ['pending', 'approved', 'rejected', 'voided']);
 
 // ── Users ──────────────────────────────────────────────
 
@@ -130,6 +130,9 @@ export const expenses = pgTable(
 		accountId: uuid('account_id').references((): any => companyAccounts.id, {
 			onDelete: 'set null'
 		}),
+		invoiceId: uuid('invoice_id').references((): any => invoices.id, {
+			onDelete: 'set null'
+		}),
 		submittedBy: text('submitted_by')
 			.notNull()
 			.references(() => users.id),
@@ -143,6 +146,13 @@ export const expenses = pgTable(
 		status: expenseStatusEnum('status').notNull().default('pending'),
 		reviewedAt: timestamp('reviewed_at', { withTimezone: true }),
 		rejectionReason: text('rejection_reason'),
+		// Supplier invoice attachment
+		invoiceFileUrl: text('invoice_file_url'),
+		invoiceFileName: text('invoice_file_name'),
+		paperlessUrl: text('paperless_url'),
+		paperlessDocumentId: integer('paperless_document_id'),
+		voidedAt: timestamp('voided_at', { withTimezone: true }),
+		voidReason: text('void_reason'),
 		createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
 		updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow()
 	},
@@ -153,6 +163,22 @@ export const expenses = pgTable(
 	]
 );
 
+// ── Expense ↔ Packages junction ────────────────────────
+
+export const expensePackages = pgTable(
+	'expense_packages',
+	{
+		expenseId: uuid('expense_id')
+			.notNull()
+			.references(() => expenses.id, { onDelete: 'cascade' }),
+		packageId: uuid('package_id')
+			.notNull()
+			.references((): any => packages.id, { onDelete: 'cascade' }),
+		createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow()
+	},
+	(table) => [primaryKey({ columns: [table.expenseId, table.packageId] })]
+);
+
 // ── Tags ───────────────────────────────────────────────
 
 export const tags = pgTable(
@@ -432,7 +458,8 @@ export const invoiceStatusEnum = pgEnum('invoice_status', [
 	'sent',
 	'paid',
 	'overdue',
-	'cancelled'
+	'cancelled',
+	'voided'
 ]);
 
 export const invoices = pgTable(
@@ -460,6 +487,8 @@ export const invoices = pgTable(
 		}),
 		notes: text('notes'),
 		pdfPath: text('pdf_path'),
+		voidedAt: timestamp('voided_at', { withTimezone: true }),
+		voidReason: text('void_reason'),
 		createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
 		updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow()
 	},
@@ -887,6 +916,8 @@ export const companyAccounts = pgTable(
 		creditLimit: numeric('credit_limit', { precision: 15, scale: 2 }),
 		statementCloseDay: integer('statement_close_day'),
 		paymentDueDay: integer('payment_due_day'),
+		// FX conversion to company base currency (e.g. 34.5 for USD→THB)
+		fxRateToBase: numeric('fx_rate_to_base', { precision: 18, scale: 8 }).notNull().default('1'),
 		// Banking integration link
 		externalAccountId: uuid('external_account_id').references(() => externalAccounts.id, {
 			onDelete: 'set null'
@@ -1137,6 +1168,74 @@ export const procedureInstanceSteps = pgTable(
 	]
 );
 
+// ── Sales / Income ─────────────────────────────────────
+
+export const saleStatusEnum = pgEnum('sale_status', ['draft', 'confirmed', 'voided']);
+
+export const sales = pgTable(
+	'sales',
+	{
+		id: uuid('id').primaryKey().defaultRandom(),
+		companyId: uuid('company_id')
+			.notNull()
+			.references(() => companies.id, { onDelete: 'cascade' }),
+		projectId: uuid('project_id').references(() => projects.id, { onDelete: 'set null' }),
+		partyId: uuid('party_id').references(() => parties.id, { onDelete: 'set null' }),
+		invoiceId: uuid('invoice_id').references((): any => invoices.id, { onDelete: 'set null' }),
+		title: text('title').notNull(),
+		saleDate: date('sale_date').notNull(),
+		currency: text('currency').notNull().default('THB'),
+		withholdingTaxRate: numeric('withholding_tax_rate', { precision: 5, scale: 4 })
+			.notNull()
+			.default('0'),
+		notes: text('notes'),
+		status: saleStatusEnum('status').notNull().default('draft'),
+		voidedAt: timestamp('voided_at', { withTimezone: true }),
+		voidReason: text('void_reason'),
+		createdBy: text('created_by').references(() => users.id, { onDelete: 'set null' }),
+		deletedAt: timestamp('deleted_at', { withTimezone: true }),
+		createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+		updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow()
+	},
+	(table) => [
+		index('sales_company_status_idx').on(table.companyId, table.status),
+		index('sales_project_idx').on(table.projectId),
+		index('sales_date_idx').on(table.saleDate)
+	]
+);
+
+export const saleLineItems = pgTable(
+	'sale_line_items',
+	{
+		id: uuid('id').primaryKey().defaultRandom(),
+		saleId: uuid('sale_id')
+			.notNull()
+			.references(() => sales.id, { onDelete: 'cascade' }),
+		productName: text('product_name').notNull(),
+		description: text('description'),
+		quantity: numeric('quantity', { precision: 15, scale: 4 }).notNull().default('1'),
+		unitPrice: numeric('unit_price', { precision: 15, scale: 2 }).notNull(),
+		taxRate: numeric('tax_rate', { precision: 5, scale: 4 }).notNull().default('0'),
+		sortOrder: integer('sort_order').notNull().default(0),
+		createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow()
+	},
+	(table) => [index('sale_line_items_sale_idx').on(table.saleId, table.sortOrder)]
+);
+
+export const salePackages = pgTable(
+	'sale_packages',
+	{
+		saleId: uuid('sale_id')
+			.notNull()
+			.references(() => sales.id, { onDelete: 'cascade' }),
+		packageId: uuid('package_id')
+			.notNull()
+			.references(() => packages.id, { onDelete: 'cascade' }),
+		createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow()
+	},
+	(table) => [primaryKey({ columns: [table.saleId, table.packageId] })]
+);
+
 export const companyAddresses = pgTable(
 	'company_addresses',
 	{
@@ -1199,6 +1298,13 @@ export const companyLogEventEnum = pgEnum('company_log_event', [
 	'invoice_created',
 	'invoice_sent',
 	'invoice_paid',
+	'invoice_voided',
+	'expense_invoice_uploaded',
+	'expense_updated',
+	'expense_voided',
+	'sale_created',
+	'sale_confirmed',
+	'sale_voided',
 	'integration_connected',
 	'integration_disconnected',
 	'transaction_matched',

src/lib/server/fx/index.ts

@@ -0,0 +1,112 @@
+import { db } from '$lib/server/db/index.js';
+import { companies, companyAccounts } from '$lib/server/db/schema.js';
+import { and, eq, isNull, ne } from 'drizzle-orm';
+
+const CDN_URL = 'https://cdn.jsdelivr.net/npm/@fawazahmed0/currency-api@latest/v1/currencies';
+const FALLBACK_URL = 'https://latest.currency-api.pages.dev/v1/currencies';
+
+async function fetchJson(url: string): Promise<unknown> {
+	const controller = new AbortController();
+	const timer = setTimeout(() => controller.abort(), 10_000);
+	try {
+		const res = await fetch(url, { signal: controller.signal });
+		if (!res.ok) throw new Error(`HTTP ${res.status}`);
+		return await res.json();
+	} finally {
+		clearTimeout(timer);
+	}
+}
+
+export async function fetchRate(
+	fromCurrency: string,
+	toCurrency: string
+): Promise<number | null> {
+	const from = fromCurrency.toLowerCase();
+	const to = toCurrency.toLowerCase();
+	if (from === to) return 1;
+
+	for (const base of [CDN_URL, FALLBACK_URL]) {
+		try {
+			const data = (await fetchJson(`${base}/${from}.min.json`)) as Record<string, unknown>;
+			const rates = data[from] as Record<string, number> | undefined;
+			if (rates && typeof rates[to] === 'number') {
+				return rates[to];
+			}
+		} catch {
+			continue;
+		}
+	}
+	return null;
+}
+
+export interface FxUpdateResult {
+	updated: number;
+	errors: string[];
+}
+
+export async function updateAllFxRates(): Promise<FxUpdateResult> {
+	let updated = 0;
+	const errors: string[] = [];
+
+	// Get all companies with their base currency
+	const companyList = await db
+		.select({ id: companies.id, currency: companies.currency })
+		.from(companies)
+		.where(isNull(companies.deletedAt));
+
+	for (const company of companyList) {
+		const baseCurrency = company.currency;
+
+		// Find accounts in foreign currencies
+		const foreignAccounts = await db
+			.select({
+				id: companyAccounts.id,
+				currency: companyAccounts.currency
+			})
+			.from(companyAccounts)
+			.where(
+				and(
+					eq(companyAccounts.companyId, company.id),
+					isNull(companyAccounts.deletedAt),
+					ne(companyAccounts.currency, baseCurrency)
+				)
+			);
+
+		if (foreignAccounts.length === 0) continue;
+
+		// Group by currency to minimize API calls
+		const byCurrency = new Map<string, string[]>();
+		for (const acct of foreignAccounts) {
+			const ids = byCurrency.get(acct.currency) ?? [];
+			ids.push(acct.id);
+			byCurrency.set(acct.currency, ids);
+		}
+
+		for (const [foreignCurrency, accountIds] of byCurrency) {
+			try {
+				const rate = await fetchRate(foreignCurrency, baseCurrency);
+				if (rate === null) {
+					errors.push(`No rate for ${foreignCurrency}→${baseCurrency}`);
+					continue;
+				}
+
+				for (const id of accountIds) {
+					await db
+						.update(companyAccounts)
+						.set({
+							fxRateToBase: rate.toFixed(8),
+							updatedAt: new Date()
+						})
+						.where(eq(companyAccounts.id, id));
+					updated++;
+				}
+			} catch (err) {
+				errors.push(
+					`${foreignCurrency}→${baseCurrency}: ${err instanceof Error ? err.message : String(err)}`
+				);
+			}
+		}
+	}
+
+	return { updated, errors };
+}

src/lib/server/paperless/index.ts

@@ -0,0 +1,59 @@
+import { env } from '$env/dynamic/private';
+
+const FETCH_TIMEOUT_MS = 20_000;
+
+export function isPaperlessEnabled(): boolean {
+	return Boolean(env.PAPERLESS_URL && env.PAPERLESS_TOKEN);
+}
+
+function baseUrl(): string {
+	const raw = (env.PAPERLESS_URL ?? '').trim();
+	return raw.endsWith('/') ? raw.slice(0, -1) : raw;
+}
+
+/**
+ * Upload a File blob to Paperless-ngx.
+ * Returns the task ID string if accepted; null on failure or if disabled.
+ *
+ * Paperless accepts multipart/form-data at /api/documents/post_document/
+ * and returns a task UUID (string) — the doc ID itself is assigned asynchronously
+ * after OCR. Callers can store the task ID as a reference.
+ */
+export async function uploadToPaperless(
+	file: File,
+	title?: string
+): Promise<{ taskId: string } | null> {
+	if (!isPaperlessEnabled()) return null;
+
+	const controller = new AbortController();
+	const timer = setTimeout(() => controller.abort(), FETCH_TIMEOUT_MS);
+
+	try {
+		const form = new FormData();
+		form.append('document', file, file.name);
+		if (title) form.append('title', title);
+
+		const res = await fetch(`${baseUrl()}/api/documents/post_document/`, {
+			method: 'POST',
+			signal: controller.signal,
+			headers: {
+				Authorization: `Token ${env.PAPERLESS_TOKEN}`
+			},
+			body: form
+		});
+
+		if (!res.ok) {
+			console.error('[paperless] upload failed', res.status, await res.text().catch(() => ''));
+			return null;
+		}
+
+		// Paperless returns a quoted task-id string in the body.
+		const raw = (await res.text()).trim().replace(/^"|"$/g, '');
+		return { taskId: raw };
+	} catch (err) {
+		console.error('[paperless] upload error', err);
+		return null;
+	} finally {
+		clearTimeout(timer);
+	}
+}

src/lib/server/recurring-bills/scheduler.ts

@@ -1,16 +1,20 @@
 import { postBillsDue } from './poster.js';
+import { updateAllFxRates } from '$lib/server/fx/index.js';
 
 const INTERVAL_MS = 15 * 60 * 1000;
-const GUARD_KEY = '__b4lRecurringBillsScheduler';
+const FX_INTERVAL_MS = 24 * 60 * 60 * 1000;
+const GUARD_KEY = '__b4lScheduler';
+const FX_LAST_KEY = '__b4lFxLastRefresh';
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-type GlobalWithGuard = typeof globalThis & { [GUARD_KEY]?: NodeJS.Timeout };
+type GlobalAny = typeof globalThis & Record<string, any>;
 
 export function startScheduler(): void {
-	const g = globalThis as GlobalWithGuard;
+	const g = globalThis as GlobalAny;
 	if (g[GUARD_KEY]) return;
 
 	g[GUARD_KEY] = setInterval(async () => {
+		// ── Recurring bills (every 15min) ──
 		try {
 			const result = await postBillsDue();
 			if (result.postedCount > 0 || result.errors.length > 0 || result.skippedCount > 0) {
@@ -19,7 +23,21 @@ export function startScheduler(): void {
 		} catch (err) {
 			console.error('[scheduler] recurring bills tick error:', err);
 		}
+
+		// ── FX rate refresh (daily) ──
+		const lastFx: number = g[FX_LAST_KEY] ?? 0;
+		if (Date.now() - lastFx > FX_INTERVAL_MS) {
+			try {
+				const result = await updateAllFxRates();
+				g[FX_LAST_KEY] = Date.now();
+				if (result.updated > 0 || result.errors.length > 0) {
+					console.log('[scheduler] FX rates refreshed:', result);
+				}
+			} catch (err) {
+				console.error('[scheduler] FX refresh error:', err);
+			}
+		}
 	}, INTERVAL_MS);
 
-	console.log('[scheduler] recurring bills started (interval: 15min)');
+	console.log('[scheduler] started (bills: 15min, FX: daily)');
 }

src/routes/(app)/companies/[companyId]/+layout.server.ts

@@ -1,8 +1,8 @@
 import { error } from '@sveltejs/kit';
 import type { LayoutServerLoad } from './$types';
 import { db } from '$lib/server/db/index.js';
-import { companies } from '$lib/server/db/schema.js';
+import { companies, companyAccounts, companyAccountTransactions } from '$lib/server/db/schema.js';
-import { eq, and, isNull } from 'drizzle-orm';
+import { eq, and, isNull, sql } from 'drizzle-orm';
 import { requireAuth, getCompanyRoles } from '$lib/server/authorization.js';
 import type { CompanyRole } from '$lib/types/index.js';
 
@@ -27,12 +27,26 @@ export const load: LayoutServerLoad = async ({ locals, params }) => {
 		error(403, 'Not a member of this company');
 	}
 
+	// Total budget = sum of all non-deleted account balances, converted to base currency
+	const [balanceRow] = await db
+		.select({
+			total: sql<string>`coalesce(sum(${companyAccountTransactions.amount} * ${companyAccounts.fxRateToBase}), '0')::text`
+		})
+		.from(companyAccountTransactions)
+		.innerJoin(companyAccounts, eq(companyAccountTransactions.accountId, companyAccounts.id))
+		.where(
+			and(
+				eq(companyAccountTransactions.companyId, company.id),
+				isNull(companyAccounts.deletedAt)
+			)
+		);
+
 	return {
 		company: {
 			id: company.id,
 			name: company.name,
 			description: company.description,
-			totalBudget: company.totalBudget,
+			totalBudget: balanceRow?.total ?? '0',
 			currency: company.currency
 		},
 		companyRoles: roles

src/routes/(app)/companies/[companyId]/+layout.svelte

@@ -31,6 +31,7 @@
 			{ href: `${baseUrl}/accounts`, label: 'Accounts', show: has(['admin', 'manager', 'accountant']) },
 			{ href: `${baseUrl}/projects`, label: 'Projects', show: true },
 			{ href: `${baseUrl}/expenses`, label: 'Expenses', show: true },
+			{ href: `${baseUrl}/sales`, label: 'Sales', show: has(['admin', 'manager', 'accountant']) },
 			{ href: `${baseUrl}/bills`, label: 'Bills', show: has(['admin', 'manager', 'accountant']) },
 			{ href: `${baseUrl}/invoices`, label: 'Invoices', show: has(['admin', 'manager']) },
 			{ href: `${baseUrl}/budget`, label: 'Budget', show: true },

src/routes/(app)/companies/[companyId]/+page.server.ts

@@ -1,23 +1,30 @@
 import type { PageServerLoad } from './$types';
 import { db } from '$lib/server/db/index.js';
-import { projects, expenses } from '$lib/server/db/schema.js';
+import {
+	projects,
+	expenses,
+	sales,
+	saleLineItems,
+	companyAccounts
+} from '$lib/server/db/schema.js';
 import { eq, and, sql } from 'drizzle-orm';
 
 export const load: PageServerLoad = async ({ parent }) => {
 	const { company } = await parent();
 
-	// Get projects with spent amounts
+	// Get projects with spent amounts (converted to base currency via each expense's account fx rate)
 	const projectList = await db
 		.select({
 			id: projects.id,
 			name: projects.name,
 			allocatedBudget: projects.allocatedBudget,
 			isActive: projects.isActive,
-			spent: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} else 0 end), 0)`,
+			spent: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} * coalesce(${companyAccounts.fxRateToBase}, 1) else 0 end), 0)::text`,
 			pendingCount: sql<number>`count(case when ${expenses.status} = 'pending' then 1 end)::int`
 		})
 		.from(projects)
 		.leftJoin(expenses, eq(expenses.projectId, projects.id))
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
 		.where(eq(projects.companyId, company.id))
 		.groupBy(projects.id)
 		.orderBy(projects.name);
@@ -38,5 +45,20 @@ export const load: PageServerLoad = async ({ parent }) => {
 		.orderBy(sql`${expenses.createdAt} desc`)
 		.limit(10);
 
-	return { projects: projectList, recentExpenses };
+	// Total confirmed sales income (net of withholding)
+	const [incomeRow] = await db
+		.select({
+			total: sql<string>`coalesce(sum(
+				(select sum(${saleLineItems.quantity} * ${saleLineItems.unitPrice} * (1 + ${saleLineItems.taxRate})) from sale_line_items where sale_id = ${sales.id})
+				* (1 - ${sales.withholdingTaxRate})
+			), '0')::text`
+		})
+		.from(sales)
+		.where(and(eq(sales.companyId, company.id), eq(sales.status, 'confirmed')));
+
+	return {
+		projects: projectList,
+		recentExpenses,
+		totalIncome: incomeRow?.total ?? '0'
+	};
 };

src/routes/(app)/companies/[companyId]/+page.svelte

@@ -8,10 +8,16 @@
 	const allocated = $derived(data.projects.reduce((s, p) => s + parseFloat(p.allocatedBudget), 0));
 	const spent = $derived(data.projects.reduce((s, p) => s + parseFloat(p.spent), 0));
 	const total = $derived(parseFloat(data.company.totalBudget));
-	const remaining = $derived(total - spent);
+	const income = $derived(parseFloat(data.totalIncome ?? '0'));
-	const remainingPct = $derived(total > 0 ? (remaining / total) * 100 : 0);
+	// Total already reflects approved expenses (they post negative txns to the ledger),
+	// so available cash IS the total. Spent stays informational.
+	const available = $derived(total);
+	const unallocated = $derived(total - allocated);
+	const allocatedPct = $derived(total > 0 ? (allocated / total) * 100 : 0);
+	const net = $derived(income - spent);
+	const netPositive = $derived(net >= 0);
 
-	const tone = $derived(remaining < 0 ? 'red' : remainingPct < 20 ? 'amber' : 'green');
+	const tone = $derived(available < 0 ? 'red' : available < Math.abs(allocated) * 0.2 ? 'amber' : 'green');
 
 	const toneRing: Record<string, string> = {
 		green: 'border-green-300 dark:border-green-700',
@@ -35,45 +41,64 @@
 </svelte:head>
 
 <div class="space-y-6">
-	<!-- KPI row -->
+	<!-- Income vs Expenses (hero split) -->
-	<div class="grid grid-cols-2 gap-3 lg:grid-cols-4">
+	<div class="grid gap-4 md:grid-cols-2">
-		<div class="rounded-lg border-2 {toneRing[tone]} bg-white p-4 dark:bg-gray-800">
+		<div class="rounded-lg border-2 border-emerald-300 bg-emerald-50 p-5 dark:border-emerald-700 dark:bg-emerald-900/20">
-			<p class="text-xs font-semibold uppercase tracking-wider text-gray-400 dark:text-gray-500">
+			<div class="flex items-center justify-between">
-				Remaining
+				<p class="text-xs font-semibold uppercase tracking-wider text-emerald-600 dark:text-emerald-400">
-			</p>
+					Income
-			<p class="mt-1 text-2xl font-bold {toneText[tone]}">
+				</p>
-				{formatCurrency(remaining, currency)}
+				<svg class="h-5 w-5 text-emerald-500 dark:text-emerald-400" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
-			</p>
+					<path d="M10 3a1 1 0 01.707.293l5 5a1 1 0 01-1.414 1.414L11 6.414V16a1 1 0 11-2 0V6.414L5.707 9.707a1 1 0 01-1.414-1.414l5-5A1 1 0 0110 3z" />
-			<div class="mt-2 h-1.5 w-full overflow-hidden rounded-full bg-gray-100 dark:bg-gray-700">
+				</svg>
-				<div
-					class="h-full transition-all {toneBar[tone]}"
-					style="width: {Math.max(0, Math.min(remainingPct, 100))}%"
-				></div>
 			</div>
-			<p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+			<p class="mt-2 text-3xl font-bold text-emerald-700 dark:text-emerald-400">
-				{remainingPct.toFixed(1)}% of total
+				{formatCurrency(income, currency)}
+			</p>
+			<p class="mt-1 text-xs text-emerald-700/70 dark:text-emerald-400/70">
+				Net of withholding · from confirmed sales
 			</p>
 		</div>
 
-		<div class="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
+		<div class="rounded-lg border-2 border-red-300 bg-red-50 p-5 dark:border-red-700 dark:bg-red-900/20">
-			<p class="text-xs font-semibold uppercase tracking-wider text-gray-400 dark:text-gray-500">
+			<div class="flex items-center justify-between">
-				Total Budget
+				<p class="text-xs font-semibold uppercase tracking-wider text-red-600 dark:text-red-400">
-			</p>
+					Expenses
-			<p class="mt-1 text-2xl font-bold text-gray-900 dark:text-white">
+				</p>
-				{formatCurrency(total, currency)}
+				<svg class="h-5 w-5 text-red-500 dark:text-red-400" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
-			</p>
+					<path d="M10 17a1 1 0 01-.707-.293l-5-5a1 1 0 011.414-1.414L9 13.586V4a1 1 0 112 0v9.586l3.293-3.293a1 1 0 011.414 1.414l-5 5A1 1 0 0110 17z" />
-			<p class="mt-1 text-xs text-gray-500 dark:text-gray-400">Company-wide</p>
+				</svg>
-		</div>
+			</div>
-
+			<p class="mt-2 text-3xl font-bold text-red-700 dark:text-red-400">
-		<div class="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
-			<p class="text-xs font-semibold uppercase tracking-wider text-gray-400 dark:text-gray-500">
-				Spent
-			</p>
-			<p class="mt-1 text-2xl font-bold text-gray-900 dark:text-white">
 				{formatCurrency(spent, currency)}
 			</p>
+			<p class="mt-1 text-xs text-red-700/70 dark:text-red-400/70">
+				Approved · across {data.projects.length} {data.projects.length === 1 ? 'project' : 'projects'}
+			</p>
+		</div>
+
+		<!-- Net position -->
+		<div class="rounded-lg border-2 {netPositive ? 'border-emerald-300 bg-emerald-50 dark:border-emerald-700 dark:bg-emerald-900/20' : 'border-red-300 bg-red-50 dark:border-red-700 dark:bg-red-900/20'} p-5 md:col-span-2">
+			<p class="text-xs font-semibold uppercase tracking-wider {netPositive ? 'text-emerald-600 dark:text-emerald-400' : 'text-red-600 dark:text-red-400'}">
+				Net Position (Income − Expenses)
+			</p>
+			<p class="mt-2 text-3xl font-bold {netPositive ? 'text-emerald-700 dark:text-emerald-400' : 'text-red-700 dark:text-red-400'}">
+				{netPositive ? '+' : ''}{formatCurrency(net, currency)}
+			</p>
+		</div>
+	</div>
+
+	<!-- Cash KPIs (secondary) -->
+	<div class="grid grid-cols-2 gap-3 lg:grid-cols-3">
+		<div class="rounded-lg border {toneRing[tone]} bg-white p-4 dark:bg-gray-800">
+			<p class="text-xs font-semibold uppercase tracking-wider text-gray-400 dark:text-gray-500">
+				Available Cash
+			</p>
+			<p class="mt-1 text-2xl font-bold {toneText[tone]}">
+				{formatCurrency(available, currency)}
+			</p>
 			<p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
-				Across {data.projects.length} {data.projects.length === 1 ? 'project' : 'projects'}
+				Sum of account balances (base currency)
 			</p>
 		</div>
 
@@ -84,8 +109,23 @@
 			<p class="mt-1 text-2xl font-bold text-gray-900 dark:text-white">
 				{formatCurrency(allocated, currency)}
 			</p>
+			<div class="mt-2 h-1.5 w-full overflow-hidden rounded-full bg-gray-100 dark:bg-gray-700">
+				<div class="h-full bg-blue-500 transition-all" style="width: {Math.min(allocatedPct, 100)}%"></div>
+			</div>
 			<p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
-				{total > 0 ? ((allocated / total) * 100).toFixed(1) : '0'}% of total
+				{allocatedPct.toFixed(1)}% of available
+			</p>
+		</div>
+
+		<div class="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
+			<p class="text-xs font-semibold uppercase tracking-wider text-gray-400 dark:text-gray-500">
+				Unallocated
+			</p>
+			<p class="mt-1 text-2xl font-bold {unallocated < 0 ? 'text-red-600 dark:text-red-400' : 'text-gray-900 dark:text-white'}">
+				{formatCurrency(unallocated, currency)}
+			</p>
+			<p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+				Cash not assigned to a project
 			</p>
 		</div>
 	</div>

src/routes/(app)/companies/[companyId]/accounts/+page.server.ts

@@ -2,6 +2,7 @@ import { error, fail } from '@sveltejs/kit';
 import type { Actions, PageServerLoad } from './$types';
 import { db } from '$lib/server/db/index.js';
 import {
+	companies,
 	companyAccounts,
 	companyAccountTransactions,
 	externalAccounts
@@ -13,8 +14,26 @@ import {
 	postTransfer,
 	type CompanyAccountTxnType
 } from '$lib/server/accounts/ledger.js';
+import { fetchRate } from '$lib/server/fx/index.js';
 import { and, asc, eq, isNull, sql } from 'drizzle-orm';
 
+async function resolveFxRate(companyId: string, accountCurrency: string): Promise<string> {
+	const [company] = await db
+		.select({ currency: companies.currency })
+		.from(companies)
+		.where(eq(companies.id, companyId))
+		.limit(1);
+	const base = company?.currency ?? 'THB';
+	if (accountCurrency.toUpperCase() === base.toUpperCase()) return '1';
+	try {
+		const rate = await fetchRate(accountCurrency, base);
+		if (rate !== null && rate > 0) return rate.toFixed(8);
+	} catch {
+		// fall through
+	}
+	return '1';
+}
+
 const MANUAL_TXN_TYPES = ['deposit', 'adjustment'] as const;
 type ManualTxnType = (typeof MANUAL_TXN_TYPES)[number];
 
@@ -112,6 +131,7 @@ type AccountFields = {
 	creditLimit: string | null;
 	statementCloseDay: number | null;
 	paymentDueDay: number | null;
+	fxRateToBase: string;
 	externalAccountId: string | null;
 };
 
@@ -171,6 +191,7 @@ function extractAccountFields(fd: FormData):
 			creditLimit: parseDecimalOrNull(fd.get('creditLimit')),
 			statementCloseDay,
 			paymentDueDay,
+			fxRateToBase: parseDecimalOrNull(fd.get('fxRateToBase')) ?? '1',
 			externalAccountId: trimOrNull(fd.get('externalAccountId'))
 		}
 	};
@@ -279,6 +300,9 @@ export const actions: Actions = {
 		const openingBalanceDate =
 			parseDate(fd.get('openingBalanceDate')) ?? new Date();
 
+		// Auto-determine FX rate: 1 for base currency, API rate otherwise
+		const fxRateToBase = await resolveFxRate(params.companyId, f.currency);
+
 		const inserted = await db.transaction(async (tx) => {
 			const [row] = await tx
 				.insert(companyAccounts)
@@ -304,6 +328,7 @@ export const actions: Actions = {
 					creditLimit: f.creditLimit,
 					statementCloseDay: f.statementCloseDay,
 					paymentDueDay: f.paymentDueDay,
+					fxRateToBase,
 					externalAccountId: f.externalAccountId
 				})
 				.returning({ id: companyAccounts.id });
@@ -383,6 +408,7 @@ export const actions: Actions = {
 				creditLimit: f.creditLimit,
 				statementCloseDay: f.statementCloseDay,
 				paymentDueDay: f.paymentDueDay,
+				fxRateToBase: f.fxRateToBase,
 				externalAccountId: f.externalAccountId,
 				updatedAt: new Date()
 			})

src/routes/(app)/companies/[companyId]/accounts/+page.svelte

@@ -143,6 +143,7 @@
 		creditLimit?: string | null;
 		statementCloseDay?: number | null;
 		paymentDueDay?: number | null;
+		fxRateToBase?: string | null;
 		externalAccountId?: string | null;
 	} = {}
 )}
@@ -176,7 +177,26 @@
 				class={inputCls}
 			/>
 		</div>
-		<div></div>
+		{#if prefix.startsWith('edit-')}
+			<div>
+				<label for="{prefix}-fxRate" class={labelCls}>FX Rate to Base</label>
+				<input
+					id="{prefix}-fxRate"
+					name="fxRateToBase"
+					type="number"
+					step="0.0001"
+					min="0.0001"
+					value={prefill.fxRateToBase ?? '1'}
+					placeholder="1.0 for THB, 34.5 for USD→THB"
+					class={inputCls}
+				/>
+				<p class="mt-0.5 text-xs text-gray-400 dark:text-gray-500">Auto-refreshed daily from FX API. Override here to override.</p>
+			</div>
+		{:else}
+			<div class="text-xs text-gray-500 dark:text-gray-400 self-end pb-2">
+				FX rate: auto-set on create (1 if base currency, else fetched from FX API)
+			</div>
+		{/if}
 
 		{#if type === 'bank'}
 			<div>
@@ -753,6 +773,13 @@
 					<p class="text-2xl font-bold {balanceClass(acct.balance)}">
 						{formatAmount(acct.balance, acct.currency)}
 					</p>
+					{#if acct.currency !== data.company.currency && acct.fxRateToBase}
+						{@const baseEquivalent = (Number(acct.balance) * Number(acct.fxRateToBase)).toFixed(2)}
+						<p class="text-xs text-gray-500 dark:text-gray-400">
+							≈ {formatAmount(baseEquivalent, data.company.currency)}
+							<span class="text-gray-400 dark:text-gray-500">(@ {Number(acct.fxRateToBase)})</span>
+						</p>
+					{/if}
 
 					{#if acct.accountType === 'credit_card' && acct.creditLimit}
 						{@const pct = utilisation(acct.balance, acct.creditLimit)}
@@ -891,6 +918,7 @@
 								creditLimit: acct.creditLimit,
 								statementCloseDay: acct.statementCloseDay,
 								paymentDueDay: acct.paymentDueDay,
+								fxRateToBase: acct.fxRateToBase,
 								externalAccountId: acct.externalAccountId
 							})}
 							<div class="mt-3 flex justify-end gap-2">

src/routes/(app)/companies/[companyId]/accounts/[accountId]/+page.svelte

@@ -347,6 +347,22 @@
 										Counterparty: {txn.counterpartyName}
 									</div>
 								{/if}
+								{#if txn.sourceExpenseId}
+									<a
+										href={`/companies/${data.company.id}/expenses/${txn.sourceExpenseId}`}
+										class="mt-0.5 inline-block text-xs font-medium text-blue-600 hover:text-blue-700 dark:text-blue-400"
+									>
+										Open expense →
+									</a>
+								{/if}
+								{#if txn.sourceInvoiceId}
+									<a
+										href={`/companies/${data.company.id}/invoices/${txn.sourceInvoiceId}`}
+										class="mt-0.5 inline-block text-xs font-medium text-blue-600 hover:text-blue-700 dark:text-blue-400"
+									>
+										Open invoice →
+									</a>
+								{/if}
 								{#if txn.fxRate && txn.fxAmount}
 									<div class="text-xs text-amber-600 dark:text-amber-400">
 										FX: {txn.fxAmount} @ {Number(txn.fxRate).toFixed(4)}

src/routes/(app)/companies/[companyId]/budget/+page.server.ts

@@ -7,7 +7,10 @@ import {
 	companies,
 	users,
 	expenses,
-	companyLog
+	companyLog,
+	sales,
+	saleLineItems,
+	companyAccounts
 } from '$lib/server/db/schema.js';
 import { and, eq, sql } from 'drizzle-orm';
 import { requireCompanyRole } from '$lib/server/authorization.js';
@@ -17,19 +20,50 @@ import { formatCurrency } from '$lib/utils/currency.js';
 export const load: PageServerLoad = async ({ parent, params }) => {
 	const { company } = await parent();
 
-	const projectList = await db
+	const projectListRaw = await db
 		.select({
 			id: projects.id,
 			name: projects.name,
 			allocatedBudget: projects.allocatedBudget,
-			spent: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} else 0 end), 0)`
+			spent: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} * coalesce(${companyAccounts.fxRateToBase}, 1) else 0 end), 0)::text`
 		})
 		.from(projects)
 		.leftJoin(expenses, eq(expenses.projectId, projects.id))
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
 		.where(eq(projects.companyId, params.companyId))
 		.groupBy(projects.id)
 		.orderBy(projects.name);
 
+	// Income per project from confirmed sales (gross - withholding = net receivable)
+	const incomeRows = await db
+		.select({
+			projectId: sales.projectId,
+			income: sql<string>`coalesce(sum(
+				(select sum(${saleLineItems.quantity} * ${saleLineItems.unitPrice} * (1 + ${saleLineItems.taxRate})) from sale_line_items where sale_id = ${sales.id})
+				* (1 - ${sales.withholdingTaxRate})
+			), '0')::text`
+		})
+		.from(sales)
+		.where(
+			and(
+				eq(sales.companyId, params.companyId),
+				eq(sales.status, 'confirmed')
+			)
+		)
+		.groupBy(sales.projectId);
+
+	const incomeByProject = new Map<string | null, string>();
+	for (const row of incomeRows) {
+		incomeByProject.set(row.projectId, row.income);
+	}
+
+	const projectList = projectListRaw.map((p) => ({
+		...p,
+		income: incomeByProject.get(p.id) ?? '0'
+	}));
+
+	const unassignedIncome = incomeByProject.get(null) ?? '0';
+
 	const allocations = await db
 		.select({
 			id: budgetAllocations.id,
@@ -64,48 +98,20 @@ export const load: PageServerLoad = async ({ parent, params }) => {
 		.limit(100);
 
 	const totalAllocated = projectList.reduce((s, p) => s + parseFloat(p.allocatedBudget), 0);
+	const totalIncome =
+		projectList.reduce((s, p) => s + parseFloat(p.income), 0) + parseFloat(unassignedIncome);
 
-	return { projects: projectList, allocations, totalAllocated, changelog };
+	return {
+		projects: projectList,
+		allocations,
+		totalAllocated,
+		totalIncome,
+		unassignedIncome,
+		changelog
+	};
 };
 
 export const actions: Actions = {
-	addBudget: async ({ request, locals, params }) => {
-		const { user } = await requireCompanyRole(locals, params.companyId, 'admin');
-
-		const formData = await request.formData();
-		const amount = parseFloat(formData.get('amount')?.toString() || '0');
-
-		if (isNaN(amount) || amount <= 0) {
-			return fail(400, { error: 'Amount must be a positive number' });
-		}
-
-		// Get current budget for the log
-		const [company] = await db
-			.select({ totalBudget: companies.totalBudget, currency: companies.currency })
-			.from(companies)
-			.where(eq(companies.id, params.companyId))
-			.limit(1);
-
-		await db
-			.update(companies)
-			.set({
-				totalBudget: sql`${companies.totalBudget}::numeric + ${amount.toFixed(2)}::numeric`,
-				updatedAt: new Date()
-			})
-			.where(eq(companies.id, params.companyId));
-
-		const newTotal = parseFloat(company.totalBudget) + amount;
-		await logCompanyEvent(
-			params.companyId,
-			user.id,
-			'budget_added',
-			`Budget increased by ${formatCurrency(amount, company.currency)} (new total: ${formatCurrency(newTotal, company.currency)})`,
-			{ amount: amount.toFixed(2), previousTotal: company.totalBudget, newTotal: newTotal.toFixed(2) }
-		);
-
-		return { success: true };
-	},
-
 	allocate: async ({ request, locals, params }) => {
 		const { user } = await requireCompanyRole(locals, params.companyId, 'manager');
 

src/routes/(app)/companies/[companyId]/budget/+page.svelte

@@ -14,7 +14,7 @@
 	const canAllocate = $derived(data.companyRoles.includes('admin') || data.companyRoles.includes('manager'));
 	const isAdmin = $derived(data.companyRoles.includes('admin'));
 
-	let showAddBudget = $state(false);
+	// Budget total now comes from account balances — no manual add
 
 	function getEventStyle(event: string) {
 		const styles: Record<string, { icon: string; bg: string; text: string; badge: string; label: string }> = {
@@ -44,65 +44,17 @@
 </svelte:head>
 
 <div>
-	<div class="mb-4 flex items-center justify-between">
+	<div class="mb-4">
 		<h2 class="text-lg font-semibold text-gray-900 dark:text-white">Budget Allocation</h2>
-		{#if isAdmin}
+		<p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
-			<button
+			Total budget reflects the sum of your account balances. Manage funds via the Accounts tab.
-				onclick={() => (showAddBudget = !showAddBudget)}
+		</p>
-				class="flex items-center gap-1 rounded-md bg-green-600 px-4 py-2 text-sm font-medium text-white hover:bg-green-700"
-			>
-				<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6v6m0 0v6m0-6h6m-6 0H6" />
-				</svg>
-				Add Budget
-			</button>
-		{/if}
 	</div>
 
 	{#if form?.error}
 		<div class="mb-4 rounded-md bg-red-50 dark:bg-red-900/30 p-3 text-sm text-red-700 dark:text-red-300">{form.error}</div>
 	{/if}
 
-	<!-- Add Budget form (admin only) -->
-	{#if showAddBudget && isAdmin}
-		<div class="mb-6 rounded-lg border-2 border-green-200 dark:border-green-700 bg-green-50 dark:bg-green-900/30 p-5">
-			<h3 class="mb-3 font-medium text-gray-900 dark:text-white">Replenish Company Budget</h3>
-			<form method="POST" action="?/addBudget" use:enhance={() => {
-				return async ({ update }) => {
-					await update();
-					showAddBudget = false;
-				};
-			}} class="flex items-end gap-3">
-				<div class="flex-1">
-					<label for="addAmount" class="mb-1 block text-sm text-gray-700 dark:text-gray-300">Amount to Add ({currency})</label>
-					<input
-						type="number"
-						id="addAmount"
-						name="amount"
-						step="0.01"
-						min="0.01"
-						required
-						placeholder="e.g. 100000"
-						class="w-full rounded-md border border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-white px-3 py-2 text-sm focus:border-green-500 focus:ring-1 focus:ring-green-500 focus:outline-none"
-					/>
-				</div>
-				<button
-					type="submit"
-					class="rounded-md bg-green-600 px-4 py-2 text-sm font-medium text-white hover:bg-green-700"
-				>
-					Add to Budget
-				</button>
-				<button
-					type="button"
-					onclick={() => (showAddBudget = false)}
-					class="rounded-md px-4 py-2 text-sm text-gray-600 dark:text-gray-400 hover:bg-gray-100 dark:hover:bg-gray-700"
-				>
-					Cancel
-				</button>
-			</form>
-		</div>
-	{/if}
-
 	<!-- Summary -->
 	<div class="mb-6 grid gap-4 sm:grid-cols-4">
 		<!-- Remaining — hero card -->

src/routes/(app)/companies/[companyId]/expenses/+page.server.ts

@@ -6,9 +6,14 @@ import {
 	projects,
 	users,
 	categories,
-	companyAccounts
+	companyAccounts,
+	companies,
+	invoices,
+	parties,
+	packages,
+	expensePackages
 } from '$lib/server/db/schema.js';
-import { eq, and, sql, isNull } from 'drizzle-orm';
+import { asc, eq, and, ne, sql, isNull } from 'drizzle-orm';
 import { requireCompanyRole, requireCompanyRoleAny } from '$lib/server/authorization.js';
 import { logCompanyEvent } from '$lib/server/audit.js';
 import { formatCurrency } from '$lib/utils/currency.js';
@@ -16,6 +21,8 @@ import {
 	postExpenseTransaction,
 	removeExpenseTransaction
 } from '$lib/server/accounts/ledger.js';
+import { saveCompanyFile, isAllowedMime, MAX_BYTES } from '$lib/server/uploads/index.js';
+import { uploadToPaperless, isPaperlessEnabled } from '$lib/server/paperless/index.js';
 
 export const load: PageServerLoad = async ({ parent, params, url }) => {
 	await parent();
@@ -40,6 +47,10 @@ export const load: PageServerLoad = async ({ parent, params, url }) => {
 			categoryName: categories.name,
 			accountId: expenses.accountId,
 			accountName: companyAccounts.name,
+			invoiceId: expenses.invoiceId,
+			invoiceFileUrl: expenses.invoiceFileUrl,
+			invoiceFileName: expenses.invoiceFileName,
+			paperlessUrl: expenses.paperlessUrl,
 			createdAt: expenses.createdAt
 		})
 		.from(expenses)
@@ -75,10 +86,165 @@ export const load: PageServerLoad = async ({ parent, params, url }) => {
 		)
 		.orderBy(companyAccounts.name);
 
-	return { expenses: expenseList, statusFilter: status, accounts: accountsList };
+	const projectList = await db
+		.select({ id: projects.id, name: projects.name })
+		.from(projects)
+		.where(and(eq(projects.companyId, params.companyId), eq(projects.isActive, true)))
+		.orderBy(asc(projects.name));
+
+	const categoryList = await db
+		.select({ id: categories.id, name: categories.name })
+		.from(categories)
+		.where(eq(categories.companyId, params.companyId))
+		.orderBy(asc(categories.name));
+
+	const invoiceList = await db
+		.select({
+			id: invoices.id,
+			invoiceNumber: invoices.invoiceNumber,
+			direction: invoices.direction,
+			partyName: parties.name,
+			total: invoices.total,
+			currency: invoices.currency
+		})
+		.from(invoices)
+		.innerJoin(parties, eq(invoices.partyId, parties.id))
+		.where(
+			and(
+				eq(invoices.companyId, params.companyId),
+				ne(invoices.status, 'voided'),
+				ne(invoices.status, 'cancelled')
+			)
+		)
+		.orderBy(asc(invoices.invoiceNumber));
+
+	const packageList = await db
+		.select({
+			id: packages.id,
+			trackingNumber: packages.trackingNumber,
+			carrier: packages.carrier,
+			direction: packages.direction,
+			status: packages.status
+		})
+		.from(packages)
+		.where(eq(packages.companyId, params.companyId))
+		.orderBy(sql`${packages.createdAt} desc`);
+
+	const expensePackageLinks = await db
+		.select({
+			expenseId: expensePackages.expenseId,
+			packageId: expensePackages.packageId
+		})
+		.from(expensePackages)
+		.innerJoin(expenses, eq(expensePackages.expenseId, expenses.id))
+		.innerJoin(projects, eq(expenses.projectId, projects.id))
+		.where(eq(projects.companyId, params.companyId));
+
+	return {
+		expenses: expenseList,
+		statusFilter: status,
+		accounts: accountsList,
+		projects: projectList,
+		categories: categoryList,
+		invoices: invoiceList,
+		packages: packageList,
+		expensePackageLinks
+	};
 };
 
+async function ensureGeneralProject(companyId: string): Promise<string> {
+	const [existing] = await db
+		.select({ id: projects.id })
+		.from(projects)
+		.where(and(eq(projects.companyId, companyId), eq(projects.name, 'General')))
+		.limit(1);
+	if (existing) return existing.id;
+
+	const [created] = await db
+		.insert(projects)
+		.values({ companyId, name: 'General', description: 'Company-wide expenses' })
+		.returning({ id: projects.id });
+	return created.id;
+}
+
 export const actions: Actions = {
+	submitExpense: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'user', 'hr', 'accountant'
+		]);
+		const fd = await request.formData();
+		const title = fd.get('title')?.toString().trim();
+		const amountStr = fd.get('amount')?.toString().trim();
+		const projectId = fd.get('projectId')?.toString().trim() || null;
+		const categoryId = fd.get('categoryId')?.toString().trim() || null;
+		const accountId = fd.get('accountId')?.toString().trim() || null;
+		const invoiceId = fd.get('invoiceId')?.toString().trim() || null;
+		const expenseDate = fd.get('expenseDate')?.toString().trim();
+		const description = fd.get('description')?.toString().trim() || null;
+
+		if (!title) return fail(400, { action: 'submitExpense', error: 'Title is required' });
+		if (!amountStr || isNaN(Number(amountStr)) || Number(amountStr) <= 0) {
+			return fail(400, { action: 'submitExpense', error: 'Valid positive amount is required' });
+		}
+		if (!expenseDate) return fail(400, { action: 'submitExpense', error: 'Date is required' });
+
+		const resolvedProjectId = projectId || (await ensureGeneralProject(params.companyId));
+
+		const [proj] = await db
+			.select({ id: projects.id })
+			.from(projects)
+			.where(and(eq(projects.id, resolvedProjectId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!proj) return fail(400, { action: 'submitExpense', error: 'Project not found' });
+
+		// Resolve currency: use the selected account's currency, else company base
+		let resolvedCurrency = 'THB';
+		if (accountId) {
+			const [acct] = await db
+				.select({ currency: companyAccounts.currency })
+				.from(companyAccounts)
+				.where(
+					and(
+						eq(companyAccounts.id, accountId),
+						eq(companyAccounts.companyId, params.companyId)
+					)
+				)
+				.limit(1);
+			if (acct) resolvedCurrency = acct.currency;
+		} else {
+			const [company] = await db
+				.select({ currency: companies.currency })
+				.from(companies)
+				.where(eq(companies.id, params.companyId))
+				.limit(1);
+			if (company) resolvedCurrency = company.currency;
+		}
+
+		await db.insert(expenses).values({
+			projectId: resolvedProjectId,
+			categoryId: categoryId || null,
+			accountId: accountId || null,
+			invoiceId: invoiceId || null,
+			submittedBy: user.id,
+			title,
+			description,
+			amount: Number(amountStr).toFixed(2),
+			currency: resolvedCurrency,
+			expenseDate,
+			status: 'pending'
+		});
+
+		await logCompanyEvent(
+			params.companyId,
+			user.id,
+			'expense_submitted',
+			`Expense "${title}" submitted for ${formatCurrency(amountStr, 'THB')}`,
+			{ projectId: resolvedProjectId }
+		);
+
+		return { success: true, action: 'submitExpense' };
+	},
+
 	approve: async ({ request, locals, params }) => {
 		const { user } = await requireCompanyRole(locals, params.companyId, 'manager');
 		const formData = await request.formData();
@@ -238,5 +404,173 @@ export const actions: Actions = {
 		);
 
 		return { success: true };
+	},
+
+	linkInvoice: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const expenseId = fd.get('expenseId')?.toString();
+		const invoiceId = fd.get('invoiceId')?.toString().trim() || null;
+
+		if (!expenseId) return fail(400, { error: 'Expense ID required' });
+
+		await db
+			.update(expenses)
+			.set({ invoiceId, updatedAt: new Date() })
+			.where(eq(expenses.id, expenseId));
+
+		return { success: true };
+	},
+
+	uploadExpenseInvoice: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'accountant'
+		]);
+		const fd = await request.formData();
+		const expenseId = fd.get('expenseId')?.toString();
+		const file = fd.get('file') as File | null;
+
+		if (!expenseId) return fail(400, { error: 'Expense ID required' });
+		if (!file || !(file instanceof File) || file.size === 0) {
+			return fail(400, { action: 'uploadExpenseInvoice', error: 'File is required' });
+		}
+		if (file.size > MAX_BYTES) {
+			return fail(400, {
+				action: 'uploadExpenseInvoice',
+				error: `File too large (max ${Math.round(MAX_BYTES / 1024 / 1024)} MB)`
+			});
+		}
+		const mime = file.type || 'application/octet-stream';
+		if (!isAllowedMime(mime)) {
+			return fail(400, {
+				action: 'uploadExpenseInvoice',
+				error: `File type not allowed: ${mime}`
+			});
+		}
+
+		// Verify expense belongs to this company
+		const [exp] = await db
+			.select({ id: expenses.id, title: expenses.title })
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(and(eq(expenses.id, expenseId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!exp) return fail(404, { error: 'Expense not found' });
+
+		let saved;
+		try {
+			saved = await saveCompanyFile(params.companyId, file);
+		} catch (err) {
+			console.error('saveCompanyFile failed', err);
+			return fail(500, { action: 'uploadExpenseInvoice', error: 'Failed to save file' });
+		}
+
+		// Fire-and-forget Paperless push if configured
+		let paperlessTaskId: string | null = null;
+		if (isPaperlessEnabled()) {
+			const paperlessResult = await uploadToPaperless(file, exp.title);
+			paperlessTaskId = paperlessResult?.taskId ?? null;
+		}
+
+		await db
+			.update(expenses)
+			.set({
+				invoiceFileUrl: saved.storedPath,
+				invoiceFileName: file.name,
+				updatedAt: new Date()
+			})
+			.where(eq(expenses.id, expenseId));
+
+		await logCompanyEvent(
+			params.companyId,
+			user.id,
+			'expense_invoice_uploaded',
+			`Invoice attached to expense "${exp.title}"`,
+			{ expenseId, fileName: file.name, paperlessTaskId }
+		);
+
+		return { success: true, action: 'uploadExpenseInvoice' };
+	},
+
+	linkPackage: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const expenseId = fd.get('expenseId')?.toString();
+		const packageId = fd.get('packageId')?.toString();
+
+		if (!expenseId || !packageId) return fail(400, { error: 'Expense and package IDs required' });
+
+		// Verify expense belongs to this company
+		const [exp] = await db
+			.select({ id: expenses.id })
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(and(eq(expenses.id, expenseId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!exp) return fail(404, { error: 'Expense not found' });
+
+		// Verify package belongs to this company
+		const [pkg] = await db
+			.select({ id: packages.id })
+			.from(packages)
+			.where(and(eq(packages.id, packageId), eq(packages.companyId, params.companyId)))
+			.limit(1);
+		if (!pkg) return fail(404, { error: 'Package not found' });
+
+		await db
+			.insert(expensePackages)
+			.values({ expenseId, packageId })
+			.onConflictDoNothing();
+
+		return { success: true, action: 'linkPackage' };
+	},
+
+	unlinkPackage: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const expenseId = fd.get('expenseId')?.toString();
+		const packageId = fd.get('packageId')?.toString();
+
+		if (!expenseId || !packageId) return fail(400, { error: 'Expense and package IDs required' });
+
+		await db
+			.delete(expensePackages)
+			.where(
+				and(eq(expensePackages.expenseId, expenseId), eq(expensePackages.packageId, packageId))
+			);
+
+		return { success: true, action: 'unlinkPackage' };
+	},
+
+	setExpensePaperlessLink: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'accountant'
+		]);
+		const fd = await request.formData();
+		const expenseId = fd.get('expenseId')?.toString();
+		const url = fd.get('paperlessUrl')?.toString().trim() || null;
+
+		if (!expenseId) return fail(400, { error: 'Expense ID required' });
+		if (url && !url.startsWith('http://') && !url.startsWith('https://')) {
+			return fail(400, {
+				action: 'setExpensePaperlessLink',
+				error: 'URL must start with http:// or https://'
+			});
+		}
+
+		const [exp] = await db
+			.select({ id: expenses.id, title: expenses.title })
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(and(eq(expenses.id, expenseId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!exp) return fail(404, { error: 'Expense not found' });
+
+		await db
+			.update(expenses)
+			.set({ paperlessUrl: url, updatedAt: new Date() })
+			.where(eq(expenses.id, expenseId));
+
+		return { success: true, action: 'setExpensePaperlessLink' };
 	}
 };

src/routes/(app)/companies/[companyId]/expenses/+page.svelte

@@ -3,9 +3,9 @@
 	import { goto } from '$app/navigation';
 	import { page } from '$app/stores';
 	import { formatCurrency } from '$lib/utils/currency.js';
-	import type { PageData } from './$types';
+	import type { PageData, ActionData } from './$types';
 
-	let { data } = $props();
+	let { data, form }: { data: PageData; form: ActionData } = $props();
 	const currency = $derived(data.company.currency);
 	const canApprove = $derived(
 		data.companyRoles.includes('admin') || data.companyRoles.includes('manager')
@@ -15,6 +15,12 @@
 			data.companyRoles.includes('manager') ||
 			data.companyRoles.includes('accountant')
 	);
+
+	let showAddForm = $state(false);
+	const todayIso = new Date().toISOString().slice(0, 10);
+
+	const inputCls = 'w-full rounded-md border border-gray-300 px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-700 dark:text-white';
+	const labelCls = 'mb-1 block text-sm font-medium text-gray-700 dark:text-gray-300';
 </script>
 
 <svelte:head>
@@ -24,8 +30,90 @@
 <div>
 	<div class="mb-4 flex items-center justify-between">
 		<h2 class="text-lg font-semibold text-gray-900 dark:text-white">Expenses</h2>
+		<button type="button" onclick={() => (showAddForm = !showAddForm)}
+			class="rounded-md bg-blue-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-blue-700">
+			{showAddForm ? 'Cancel' : '+ New Expense'}
+		</button>
 	</div>
 
+	{#if form?.action === 'submitExpense' && form.error}
+		<div class="mb-4 rounded-md bg-red-50 p-3 text-sm text-red-700 dark:bg-red-900/30 dark:text-red-300">{form.error}</div>
+	{/if}
+
+	{#if showAddForm}
+		<section class="mb-6 rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
+			<h3 class="mb-3 font-semibold text-gray-900 dark:text-white">Add Expense</h3>
+			<form method="POST" action="?/submitExpense"
+				use:enhance={() => async ({ result, update, formElement }) => {
+					await update({ reset: false });
+					if (result.type === 'success') { showAddForm = false; formElement.reset(); }
+				}}
+				class="grid grid-cols-1 gap-3 md:grid-cols-2">
+				<div class="md:col-span-2">
+					<label for="exp-title" class={labelCls}>Title <span class="text-red-500">*</span></label>
+					<input id="exp-title" name="title" type="text" required class={inputCls} placeholder="e.g. Office supplies" />
+				</div>
+				<div>
+					<label for="exp-amount" class={labelCls}>Amount <span class="text-red-500">*</span></label>
+					<input id="exp-amount" name="amount" type="number" step="0.01" min="0.01" required class={inputCls} />
+				</div>
+				<div>
+					<label for="exp-date" class={labelCls}>Date <span class="text-red-500">*</span></label>
+					<input id="exp-date" name="expenseDate" type="date" required value={todayIso} class={inputCls} />
+				</div>
+				<div>
+					<label for="exp-project" class={labelCls}>Project</label>
+					<select id="exp-project" name="projectId" class={inputCls}>
+						<option value="">Company-wide (General)</option>
+						{#each data.projects as proj (proj.id)}
+							<option value={proj.id}>{proj.name}</option>
+						{/each}
+					</select>
+				</div>
+				<div>
+					<label for="exp-category" class={labelCls}>Category</label>
+					<select id="exp-category" name="categoryId" class={inputCls}>
+						<option value="">—</option>
+						{#each data.categories as cat (cat.id)}
+							<option value={cat.id}>{cat.name}</option>
+						{/each}
+					</select>
+				</div>
+				<div>
+					<label for="exp-account" class={labelCls}>Account</label>
+					<select id="exp-account" name="accountId" class={inputCls}>
+						<option value="">—</option>
+						{#each data.accounts as acct (acct.id)}
+							<option value={acct.id}>{acct.name} ({acct.currency})</option>
+						{/each}
+					</select>
+				</div>
+				<div>
+					<label for="exp-invoice" class={labelCls}>Invoice</label>
+					<select id="exp-invoice" name="invoiceId" class={inputCls}>
+						<option value="">—</option>
+						{#each data.invoices as inv (inv.id)}
+							<option value={inv.id}>{inv.invoiceNumber} — {inv.partyName} ({inv.direction})</option>
+						{/each}
+					</select>
+				</div>
+				<div class="md:col-span-2">
+					<label for="exp-desc" class={labelCls}>Description</label>
+					<textarea id="exp-desc" name="description" rows="2" class={inputCls}></textarea>
+				</div>
+				<div class="md:col-span-2 flex justify-end gap-2">
+					<button type="button" onclick={() => (showAddForm = false)}
+						class="rounded-md border border-gray-300 px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50 dark:border-gray-600 dark:text-gray-200 dark:hover:bg-gray-700">Cancel</button>
+					<button type="submit"
+						class="rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700">Submit Expense</button>
+				</div>
+			</form>
+			<p class="mt-2 text-xs text-gray-500 dark:text-gray-400">
+				Expense will be submitted as pending. A manager can approve or reject it.
+			</p>
+		</section>
+	{/if}
+
 	<!-- Status filter -->
 	<div class="mb-4 flex gap-2">
 		{#each ['all', 'pending', 'approved', 'rejected'] as status}
@@ -47,8 +135,13 @@
 		</div>
 	{:else}
 		<div class="space-y-3">
-			{#each data.expenses as expense}
+			{#each data.expenses as expense (expense.id)}
-				<div class="rounded-lg border border-gray-200 dark:border-gray-700 bg-white dark:bg-gray-800 p-4">
+				{@const linkedPkgIds = data.expensePackageLinks.filter((l) => l.expenseId === expense.id).map((l) => l.packageId)}
+				<div class="rounded-lg border border-gray-200 dark:border-gray-700 bg-white dark:bg-gray-800 p-4 transition-colors hover:border-blue-400 dark:hover:border-blue-500">
+					<a href={`/companies/${data.company.id}/expenses/${expense.id}`}
+						class="mb-1 inline-block text-xs font-medium text-blue-600 hover:text-blue-700 dark:text-blue-400">
+						View details →
+					</a>
 					<div class="flex items-start justify-between">
 						<div>
 							<h3 class="font-medium text-gray-900 dark:text-white">{expense.title}</h3>
@@ -71,6 +164,57 @@
 									</span>
 								</p>
 							{/if}
+							{#if expense.invoiceId}
+								{@const inv = data.invoices.find((i) => i.id === expense.invoiceId)}
+								{#if inv}
+									<p class="mt-1 text-xs">
+										<a
+											href={`/companies/${data.company.id}/invoices/${inv.id}`}
+											class="rounded-full bg-indigo-100 px-2 py-0.5 font-medium text-indigo-700 hover:bg-indigo-200 dark:bg-indigo-900/40 dark:text-indigo-300"
+										>
+											Invoice: {inv.invoiceNumber}
+										</a>
+									</p>
+								{/if}
+							{/if}
+							<p class="mt-1 flex flex-wrap items-center gap-2 text-xs">
+								{#if expense.invoiceFileUrl}
+									<a
+										href={`/companies/${data.company.id}/expenses/${expense.id}/invoice`}
+										class="rounded-full bg-emerald-100 px-2 py-0.5 font-medium text-emerald-700 hover:bg-emerald-200 dark:bg-emerald-900/40 dark:text-emerald-300"
+									>
+										📄 {expense.invoiceFileName ?? 'Invoice file'}
+									</a>
+								{/if}
+								{#if expense.paperlessUrl}
+									<a
+										href={expense.paperlessUrl}
+										target="_blank"
+										rel="noopener noreferrer"
+										class="rounded-full bg-purple-100 px-2 py-0.5 font-medium text-purple-700 hover:bg-purple-200 dark:bg-purple-900/40 dark:text-purple-300"
+									>
+										🗂 Paperless
+									</a>
+								{/if}
+								{#if !expense.invoiceFileUrl && !expense.paperlessUrl}
+									<span class="rounded-full bg-amber-100 px-2 py-0.5 font-medium text-amber-700 dark:bg-amber-900/40 dark:text-amber-300">
+										Pending invoice
+									</span>
+								{/if}
+							</p>
+							{#if linkedPkgIds.length > 0}
+								<p class="mt-1 flex flex-wrap gap-1 text-xs">
+									{#each linkedPkgIds as pkgId (pkgId)}
+										{@const pkg = data.packages.find((p) => p.id === pkgId)}
+										{#if pkg}
+											<a href={`/companies/${data.company.id}/packages/${pkg.id}`}
+												class="rounded-full bg-cyan-100 px-2 py-0.5 font-medium text-cyan-700 hover:bg-cyan-200 dark:bg-cyan-900/40 dark:text-cyan-300">
+												📦 {pkg.trackingNumber}
+											</a>
+										{/if}
+									{/each}
+								</p>
+							{/if}
 						</div>
 						<div class="text-right">
 							<p class="text-lg font-semibold dark:text-white">{formatCurrency(expense.amount, expense.currency)}</p>
@@ -152,6 +296,81 @@
 							</button>
 						</form>
 					{/if}
+
+					{#if canAssignAccount && data.packages.length > 0}
+						{@const linkedPkgIds = data.expensePackageLinks.filter((l) => l.expenseId === expense.id).map((l) => l.packageId)}
+						<details class="mt-3 border-t border-gray-100 pt-3 dark:border-gray-700">
+							<summary class="text-xs font-medium text-blue-600 hover:text-blue-700 dark:text-blue-400">
+								Link packages ({linkedPkgIds.length})
+							</summary>
+							<div class="mt-2 space-y-1">
+								{#each data.packages as pkg (pkg.id)}
+									{@const isLinked = linkedPkgIds.includes(pkg.id)}
+									<form
+										method="POST"
+										action={isLinked ? '?/unlinkPackage' : '?/linkPackage'}
+										use:enhance
+										class="flex items-center gap-2 text-xs"
+									>
+										<input type="hidden" name="expenseId" value={expense.id} />
+										<input type="hidden" name="packageId" value={pkg.id} />
+										<button type="submit"
+											class="flex h-4 w-4 items-center justify-center rounded border-2 {isLinked
+												? 'border-cyan-500 bg-cyan-500 text-white'
+												: 'border-gray-300 hover:border-cyan-400 dark:border-gray-600'}">
+											{#if isLinked}✓{/if}
+										</button>
+										<span class="text-gray-700 dark:text-gray-300">
+											{pkg.trackingNumber} — {pkg.carrier} ({pkg.direction})
+										</span>
+									</form>
+								{/each}
+							</div>
+						</details>
+					{/if}
+
+					{#if canAssignAccount}
+						<details class="mt-3 border-t border-gray-100 pt-3 dark:border-gray-700">
+							<summary class="text-xs font-medium text-blue-600 hover:text-blue-700 dark:text-blue-400">
+								{expense.invoiceFileUrl || expense.paperlessUrl ? 'Manage invoice' : '+ Attach invoice'}
+							</summary>
+							<div class="mt-2 space-y-2">
+								<form
+									method="POST"
+									action="?/uploadExpenseInvoice"
+									enctype="multipart/form-data"
+									use:enhance
+									class="flex flex-wrap items-center gap-2 text-xs"
+								>
+									<input type="hidden" name="expenseId" value={expense.id} />
+									<label class="text-gray-500 dark:text-gray-400" for="inv-file-{expense.id}">File:</label>
+									<input id="inv-file-{expense.id}" name="file" type="file" accept="application/pdf,image/*" required
+										class="text-xs text-gray-700 dark:text-gray-300" />
+									<button type="submit"
+										class="rounded-md bg-blue-600 px-2 py-1 text-xs font-medium text-white hover:bg-blue-700">
+										Upload
+									</button>
+								</form>
+								<form
+									method="POST"
+									action="?/setExpensePaperlessLink"
+									use:enhance
+									class="flex flex-wrap items-center gap-2 text-xs"
+								>
+									<input type="hidden" name="expenseId" value={expense.id} />
+									<label class="text-gray-500 dark:text-gray-400" for="pless-{expense.id}">Paperless URL:</label>
+									<input id="pless-{expense.id}" name="paperlessUrl" type="url"
+										value={expense.paperlessUrl ?? ''}
+										placeholder="https://paperless.example.com/documents/123"
+										class="flex-1 rounded border border-gray-300 bg-white px-2 py-1 text-xs dark:border-gray-600 dark:bg-gray-700 dark:text-white" />
+									<button type="submit"
+										class="rounded-md border border-gray-300 bg-white px-2 py-1 text-xs font-medium text-gray-700 hover:bg-gray-50 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200">
+										Save link
+									</button>
+								</form>
+							</div>
+						</details>
+					{/if}
 				</div>
 			{/each}
 		</div>

src/routes/(app)/companies/[companyId]/expenses/[expenseId]/+page.server.ts

@@ -0,0 +1,453 @@
+import { error, fail } from '@sveltejs/kit';
+import type { Actions, PageServerLoad } from './$types';
+import { db } from '$lib/server/db/index.js';
+import {
+	expenses,
+	projects,
+	users,
+	categories,
+	parties,
+	companyAccounts,
+	invoices,
+	packages,
+	expensePackages
+} from '$lib/server/db/schema.js';
+import { and, asc, eq, isNull, ne } from 'drizzle-orm';
+import { requireCompanyRoleAny } from '$lib/server/authorization.js';
+import { logCompanyEvent } from '$lib/server/audit.js';
+import { formatCurrency } from '$lib/utils/currency.js';
+import {
+	postExpenseTransaction,
+	removeExpenseTransaction
+} from '$lib/server/accounts/ledger.js';
+import { saveCompanyFile, isAllowedMime, MAX_BYTES } from '$lib/server/uploads/index.js';
+import { uploadToPaperless, isPaperlessEnabled } from '$lib/server/paperless/index.js';
+
+function trimOrNull(v: FormDataEntryValue | null): string | null {
+	const s = v?.toString().trim();
+	return s ? s : null;
+}
+
+export const load: PageServerLoad = async ({ locals, params, parent }) => {
+	await requireCompanyRoleAny(locals, params.companyId, [
+		'admin', 'manager', 'user', 'accountant', 'hr'
+	]);
+	await parent();
+
+	const [row] = await db
+		.select({
+			id: expenses.id,
+			title: expenses.title,
+			description: expenses.description,
+			amount: expenses.amount,
+			currency: expenses.currency,
+			status: expenses.status,
+			expenseDate: expenses.expenseDate,
+			rejectionReason: expenses.rejectionReason,
+			reviewedAt: expenses.reviewedAt,
+			createdAt: expenses.createdAt,
+			updatedAt: expenses.updatedAt,
+			projectId: expenses.projectId,
+			projectName: projects.name,
+			partyId: expenses.partyId,
+			partyName: parties.name,
+			categoryId: expenses.categoryId,
+			categoryName: categories.name,
+			accountId: expenses.accountId,
+			accountName: companyAccounts.name,
+			invoiceId: expenses.invoiceId,
+			invoiceFileUrl: expenses.invoiceFileUrl,
+			invoiceFileName: expenses.invoiceFileName,
+			paperlessUrl: expenses.paperlessUrl,
+			voidedAt: expenses.voidedAt,
+			voidReason: expenses.voidReason,
+			submitterName: users.displayName,
+			submitterEmail: users.email
+		})
+		.from(expenses)
+		.innerJoin(projects, eq(expenses.projectId, projects.id))
+		.innerJoin(users, eq(expenses.submittedBy, users.id))
+		.leftJoin(categories, eq(expenses.categoryId, categories.id))
+		.leftJoin(parties, eq(expenses.partyId, parties.id))
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
+		.where(and(eq(expenses.id, params.expenseId), eq(projects.companyId, params.companyId)))
+		.limit(1);
+
+	if (!row) error(404, 'Expense not found');
+
+	const projectList = await db
+		.select({ id: projects.id, name: projects.name })
+		.from(projects)
+		.where(and(eq(projects.companyId, params.companyId), eq(projects.isActive, true)))
+		.orderBy(asc(projects.name));
+
+	const categoryList = await db
+		.select({ id: categories.id, name: categories.name })
+		.from(categories)
+		.where(eq(categories.companyId, params.companyId))
+		.orderBy(asc(categories.name));
+
+	const accountList = await db
+		.select({
+			id: companyAccounts.id,
+			name: companyAccounts.name,
+			currency: companyAccounts.currency
+		})
+		.from(companyAccounts)
+		.where(
+			and(
+				eq(companyAccounts.companyId, params.companyId),
+				eq(companyAccounts.isArchived, false),
+				isNull(companyAccounts.deletedAt)
+			)
+		)
+		.orderBy(companyAccounts.name);
+
+	const partyList = await db
+		.select({ id: parties.id, name: parties.name })
+		.from(parties)
+		.where(and(eq(parties.companyId, params.companyId), isNull(parties.deletedAt)))
+		.orderBy(asc(parties.name));
+
+	const invoiceList = await db
+		.select({
+			id: invoices.id,
+			invoiceNumber: invoices.invoiceNumber,
+			direction: invoices.direction
+		})
+		.from(invoices)
+		.where(
+			and(
+				eq(invoices.companyId, params.companyId),
+				ne(invoices.status, 'voided'),
+				ne(invoices.status, 'cancelled')
+			)
+		)
+		.orderBy(asc(invoices.invoiceNumber));
+
+	const linkedPackages = await db
+		.select({
+			id: packages.id,
+			trackingNumber: packages.trackingNumber,
+			carrier: packages.carrier,
+			direction: packages.direction,
+			status: packages.status
+		})
+		.from(expensePackages)
+		.innerJoin(packages, eq(expensePackages.packageId, packages.id))
+		.where(eq(expensePackages.expenseId, params.expenseId));
+
+	const availablePackages = await db
+		.select({
+			id: packages.id,
+			trackingNumber: packages.trackingNumber,
+			carrier: packages.carrier,
+			direction: packages.direction
+		})
+		.from(packages)
+		.where(eq(packages.companyId, params.companyId))
+		.orderBy(packages.createdAt);
+
+	return {
+		expense: row,
+		projects: projectList,
+		categories: categoryList,
+		accounts: accountList,
+		parties: partyList,
+		invoices: invoiceList,
+		linkedPackages,
+		availablePackages
+	};
+};
+
+export const actions: Actions = {
+	updateExpense: async ({ request, locals, params }) => {
+		const { user, roles } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'accountant'
+		]);
+		const canManage = roles.some((r) => r === 'admin' || r === 'manager' || r === 'accountant');
+		if (!canManage) return fail(403, { error: 'Not permitted' });
+
+		const fd = await request.formData();
+		const title = trimOrNull(fd.get('title'));
+		const amountStr = fd.get('amount')?.toString().trim();
+		const expenseDate = trimOrNull(fd.get('expenseDate'));
+		const description = trimOrNull(fd.get('description'));
+		const projectId = trimOrNull(fd.get('projectId'));
+		const categoryId = trimOrNull(fd.get('categoryId'));
+		const partyId = trimOrNull(fd.get('partyId'));
+		const accountId = trimOrNull(fd.get('accountId'));
+		const invoiceId = trimOrNull(fd.get('invoiceId'));
+
+		if (!title) return fail(400, { action: 'updateExpense', error: 'Title is required' });
+		if (!amountStr || isNaN(Number(amountStr)) || Number(amountStr) <= 0) {
+			return fail(400, { action: 'updateExpense', error: 'Valid positive amount required' });
+		}
+		if (!expenseDate) return fail(400, { action: 'updateExpense', error: 'Date is required' });
+		if (!projectId) return fail(400, { action: 'updateExpense', error: 'Project is required' });
+
+		// Verify current expense belongs to this company
+		const [existing] = await db
+			.select({
+				id: expenses.id,
+				title: expenses.title,
+				amount: expenses.amount,
+				status: expenses.status,
+				accountId: expenses.accountId
+			})
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(
+				and(eq(expenses.id, params.expenseId), eq(projects.companyId, params.companyId))
+			)
+			.limit(1);
+		if (!existing) error(404, 'Expense not found');
+
+		// Verify target project belongs to this company
+		const [proj] = await db
+			.select({ id: projects.id })
+			.from(projects)
+			.where(and(eq(projects.id, projectId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!proj) return fail(400, { action: 'updateExpense', error: 'Project not in this company' });
+
+		const newAmount = Number(amountStr).toFixed(2);
+		const amountChanged = newAmount !== existing.amount;
+		const accountChanged = (accountId ?? null) !== (existing.accountId ?? null);
+
+		// Resolve currency from the (possibly new) account
+		let resolvedCurrency: string | undefined = undefined;
+		if (accountId) {
+			const [acct] = await db
+				.select({ currency: companyAccounts.currency })
+				.from(companyAccounts)
+				.where(
+					and(
+						eq(companyAccounts.id, accountId),
+						eq(companyAccounts.companyId, params.companyId)
+					)
+				)
+				.limit(1);
+			if (acct) resolvedCurrency = acct.currency;
+		}
+
+		await db.transaction(async (tx) => {
+			await tx
+				.update(expenses)
+				.set({
+					title,
+					description,
+					amount: newAmount,
+					expenseDate,
+					projectId,
+					categoryId,
+					partyId,
+					accountId,
+					invoiceId,
+					...(resolvedCurrency ? { currency: resolvedCurrency } : {}),
+					updatedAt: new Date()
+				})
+				.where(eq(expenses.id, params.expenseId));
+
+			// Re-post ledger entry if approved and amount or account changed
+			if (existing.status === 'approved' && (amountChanged || accountChanged)) {
+				if (accountId) {
+					await postExpenseTransaction(params.expenseId, accountId, user.id, tx);
+				} else {
+					await removeExpenseTransaction(params.expenseId, tx);
+				}
+			}
+		});
+
+		await logCompanyEvent(
+			params.companyId,
+			user.id,
+			'expense_updated',
+			`Expense "${title}" edited (was ${formatCurrency(existing.amount, 'THB')})`,
+			{
+				expenseId: params.expenseId,
+				previousTitle: existing.title,
+				previousAmount: existing.amount,
+				newAmount,
+				amountChanged,
+				accountChanged
+			}
+		);
+
+		return { success: true, action: 'updateExpense' };
+	},
+
+	uploadInvoice: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'accountant'
+		]);
+		const fd = await request.formData();
+		const file = fd.get('file') as File | null;
+
+		if (!file || !(file instanceof File) || file.size === 0) {
+			return fail(400, { action: 'uploadInvoice', error: 'File is required' });
+		}
+		if (file.size > MAX_BYTES) {
+			return fail(400, {
+				action: 'uploadInvoice',
+				error: `File too large (max ${Math.round(MAX_BYTES / 1024 / 1024)} MB)`
+			});
+		}
+		const mime = file.type || 'application/octet-stream';
+		if (!isAllowedMime(mime)) {
+			return fail(400, { action: 'uploadInvoice', error: `File type not allowed: ${mime}` });
+		}
+
+		const [exp] = await db
+			.select({ id: expenses.id, title: expenses.title })
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(and(eq(expenses.id, params.expenseId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!exp) return fail(404, { error: 'Expense not found' });
+
+		let saved;
+		try {
+			saved = await saveCompanyFile(params.companyId, file);
+		} catch (err) {
+			console.error('saveCompanyFile failed', err);
+			return fail(500, { action: 'uploadInvoice', error: 'Failed to save file' });
+		}
+
+		if (isPaperlessEnabled()) {
+			await uploadToPaperless(file, exp.title);
+		}
+
+		await db
+			.update(expenses)
+			.set({
+				invoiceFileUrl: saved.storedPath,
+				invoiceFileName: file.name,
+				updatedAt: new Date()
+			})
+			.where(eq(expenses.id, params.expenseId));
+
+		await logCompanyEvent(params.companyId, user.id, 'expense_invoice_uploaded',
+			`Invoice attached to expense "${exp.title}"`,
+			{ expenseId: params.expenseId, fileName: file.name });
+
+		return { success: true, action: 'uploadInvoice' };
+	},
+
+	setPaperlessLink: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const url = fd.get('paperlessUrl')?.toString().trim() || null;
+
+		if (url && !url.startsWith('http://') && !url.startsWith('https://')) {
+			return fail(400, {
+				action: 'setPaperlessLink',
+				error: 'URL must start with http:// or https://'
+			});
+		}
+
+		const [exp] = await db
+			.select({ id: expenses.id })
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(and(eq(expenses.id, params.expenseId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!exp) return fail(404, { error: 'Expense not found' });
+
+		await db
+			.update(expenses)
+			.set({ paperlessUrl: url, updatedAt: new Date() })
+			.where(eq(expenses.id, params.expenseId));
+
+		return { success: true, action: 'setPaperlessLink' };
+	},
+
+	linkPackage: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const packageId = fd.get('packageId')?.toString();
+		if (!packageId) return fail(400, { error: 'Package id required' });
+
+		// Verify expense and package belong to this company
+		const [exp] = await db
+			.select({ id: expenses.id })
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(and(eq(expenses.id, params.expenseId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!exp) return fail(404, { error: 'Expense not found' });
+
+		const [pkg] = await db
+			.select({ id: packages.id })
+			.from(packages)
+			.where(and(eq(packages.id, packageId), eq(packages.companyId, params.companyId)))
+			.limit(1);
+		if (!pkg) return fail(404, { error: 'Package not found' });
+
+		await db
+			.insert(expensePackages)
+			.values({ expenseId: params.expenseId, packageId })
+			.onConflictDoNothing();
+
+		return { success: true, action: 'linkPackage' };
+	},
+
+	voidExpense: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const reason = fd.get('reason')?.toString().trim();
+		if (!reason) return fail(400, { action: 'voidExpense', error: 'Void reason is required' });
+
+		const [existing] = await db
+			.select({ id: expenses.id, title: expenses.title, status: expenses.status })
+			.from(expenses)
+			.innerJoin(projects, eq(expenses.projectId, projects.id))
+			.where(and(eq(expenses.id, params.expenseId), eq(projects.companyId, params.companyId)))
+			.limit(1);
+		if (!existing) return fail(404, { error: 'Expense not found' });
+		if (existing.status === 'voided') return fail(400, { error: 'Expense is already voided' });
+
+		await db.transaction(async (tx) => {
+			await tx
+				.update(expenses)
+				.set({
+					status: 'voided',
+					voidedAt: new Date(),
+					voidReason: reason,
+					updatedAt: new Date()
+				})
+				.where(eq(expenses.id, params.expenseId));
+
+			// Reverse any ledger post for this expense
+			await removeExpenseTransaction(params.expenseId, tx);
+		});
+
+		await logCompanyEvent(
+			params.companyId,
+			user.id,
+			'expense_voided',
+			`Expense "${existing.title}" voided: ${reason}`,
+			{ expenseId: params.expenseId, reason, previousStatus: existing.status }
+		);
+
+		return { success: true, action: 'voidExpense' };
+	},
+
+	unlinkPackage: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const packageId = fd.get('packageId')?.toString();
+		if (!packageId) return fail(400, { error: 'Package id required' });
+
+		await db
+			.delete(expensePackages)
+			.where(
+				and(
+					eq(expensePackages.expenseId, params.expenseId),
+					eq(expensePackages.packageId, packageId)
+				)
+			);
+
+		return { success: true, action: 'unlinkPackage' };
+	}
+};

src/routes/(app)/companies/[companyId]/expenses/[expenseId]/+page.svelte

@@ -0,0 +1,323 @@
+<script lang="ts">
+	import { enhance } from '$app/forms';
+	import { formatCurrency } from '$lib/utils/currency.js';
+	import { formatDate } from '$lib/utils/date.js';
+	import type { PageData, ActionData } from './$types';
+
+	let { data, form }: { data: PageData; form: ActionData } = $props();
+
+	let editing = $state(false);
+
+	const canManage = $derived(
+		data.companyRoles.some((r) => r === 'admin' || r === 'manager' || r === 'accountant')
+	);
+
+	const STATUS_BADGE: Record<string, string> = {
+		pending: 'bg-amber-100 text-amber-700 dark:bg-amber-900/40 dark:text-amber-300',
+		approved: 'bg-green-100 text-green-700 dark:bg-green-900/40 dark:text-green-300',
+		rejected: 'bg-red-100 text-red-700 dark:bg-red-900/40 dark:text-red-300',
+		voided: 'bg-red-200 text-red-800 line-through dark:bg-red-900/50 dark:text-red-300'
+	};
+
+	let showVoidForm = $state(false);
+	const canVoid = $derived(canManage && data.expense.status !== 'voided');
+
+	const inputCls = 'w-full rounded-md border border-gray-300 px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-700 dark:text-white';
+	const labelCls = 'mb-1 block text-sm font-medium text-gray-700 dark:text-gray-300';
+</script>
+
+<svelte:head>
+	<title>{data.expense.title} - Expense</title>
+</svelte:head>
+
+<div class="space-y-6">
+	<header>
+		<a href={`/companies/${data.company.id}/expenses`} class="text-sm text-blue-600 hover:text-blue-700 dark:text-blue-400">&larr; Expenses</a>
+		<div class="mt-1 flex items-start justify-between gap-4">
+			<div>
+				<h1 class="text-2xl font-bold text-gray-900 dark:text-white">{data.expense.title}</h1>
+				<div class="mt-2 flex flex-wrap items-center gap-3 text-sm text-gray-500 dark:text-gray-400">
+					<span class="rounded-full px-2 py-0.5 text-xs font-medium {STATUS_BADGE[data.expense.status]}">
+						{data.expense.status}
+					</span>
+					<span>{data.expense.expenseDate}</span>
+					<span>By {data.expense.submitterName ?? data.expense.submitterEmail}</span>
+				</div>
+			</div>
+			{#if canManage && !editing}
+				<div class="flex gap-2">
+					<button type="button" onclick={() => (editing = true)}
+						class="rounded-md bg-blue-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-blue-700">
+						Edit
+					</button>
+					{#if canVoid}
+						<button type="button" onclick={() => (showVoidForm = !showVoidForm)}
+							class="rounded-md border border-red-300 px-3 py-1.5 text-sm font-medium text-red-600 hover:bg-red-50 dark:border-red-700 dark:text-red-400 dark:hover:bg-red-900/20">
+							Void
+						</button>
+					{/if}
+				</div>
+			{/if}
+		</div>
+	</header>
+
+	{#if form?.error}
+		<div class="rounded-md bg-red-50 p-3 text-sm text-red-700 dark:bg-red-900/30 dark:text-red-300">{form.error}</div>
+	{/if}
+
+	{#if data.expense.status === 'voided' && data.expense.voidReason}
+		<div class="rounded-md border border-red-200 bg-red-50 p-3 dark:border-red-700 dark:bg-red-900/20">
+			<span class="text-sm font-medium text-red-700 dark:text-red-300">Voided:</span>
+			<span class="text-sm text-red-600 dark:text-red-400">{data.expense.voidReason}</span>
+		</div>
+	{/if}
+
+	{#if showVoidForm && canVoid}
+		<form method="POST" action="?/voidExpense"
+			use:enhance={() => async ({ result, update }) => {
+				await update({ reset: false });
+				if (result.type === 'success') showVoidForm = false;
+			}}
+			class="rounded-md border border-red-200 bg-red-50 p-4 dark:border-red-700 dark:bg-red-900/20">
+			<p class="mb-2 text-sm font-medium text-red-700 dark:text-red-300">
+				Void this expense? This reverses any ledger entry. Cannot be undone.
+			</p>
+			<label for="void-reason" class={labelCls}>Reason <span class="text-red-500">*</span></label>
+			<textarea id="void-reason" name="reason" rows="2" required
+				placeholder="e.g. Duplicate, wrong supplier, incorrect amount"
+				class={inputCls}></textarea>
+			<div class="mt-2 flex justify-end gap-2">
+				<button type="button" onclick={() => (showVoidForm = false)}
+					class="rounded-md border border-gray-300 px-3 py-1.5 text-sm font-medium text-gray-700 dark:border-gray-600 dark:text-gray-200">Cancel</button>
+				<button type="submit" class="rounded-md bg-red-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-red-700">Confirm Void</button>
+			</div>
+		</form>
+	{/if}
+
+	{#if editing && canManage}
+		<form method="POST" action="?/updateExpense"
+			use:enhance={() => async ({ result, update }) => {
+				await update({ reset: false });
+				if (result.type === 'success') editing = false;
+			}}
+			class="grid grid-cols-1 gap-3 rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800 md:grid-cols-2">
+			<div class="md:col-span-2">
+				<label for="e-title" class={labelCls}>Title <span class="text-red-500">*</span></label>
+				<input id="e-title" name="title" type="text" required value={data.expense.title} class={inputCls} />
+			</div>
+			<div>
+				<label for="e-amount" class={labelCls}>Amount <span class="text-red-500">*</span></label>
+				<input id="e-amount" name="amount" type="number" step="0.01" min="0.01" required value={data.expense.amount} class={inputCls} />
+			</div>
+			<div>
+				<label for="e-date" class={labelCls}>Date <span class="text-red-500">*</span></label>
+				<input id="e-date" name="expenseDate" type="date" required value={data.expense.expenseDate} class={inputCls} />
+			</div>
+			<div>
+				<label for="e-project" class={labelCls}>Project <span class="text-red-500">*</span></label>
+				<select id="e-project" name="projectId" required value={data.expense.projectId} class={inputCls}>
+					{#each data.projects as p (p.id)}
+						<option value={p.id}>{p.name}</option>
+					{/each}
+				</select>
+			</div>
+			<div>
+				<label for="e-category" class={labelCls}>Category</label>
+				<select id="e-category" name="categoryId" value={data.expense.categoryId ?? ''} class={inputCls}>
+					<option value="">—</option>
+					{#each data.categories as c (c.id)}
+						<option value={c.id}>{c.name}</option>
+					{/each}
+				</select>
+			</div>
+			<div>
+				<label for="e-party" class={labelCls}>Supplier</label>
+				<select id="e-party" name="partyId" value={data.expense.partyId ?? ''} class={inputCls}>
+					<option value="">—</option>
+					{#each data.parties as p (p.id)}
+						<option value={p.id}>{p.name}</option>
+					{/each}
+				</select>
+			</div>
+			<div>
+				<label for="e-account" class={labelCls}>Account</label>
+				<select id="e-account" name="accountId" value={data.expense.accountId ?? ''} class={inputCls}>
+					<option value="">—</option>
+					{#each data.accounts as a (a.id)}
+						<option value={a.id}>{a.name} ({a.currency})</option>
+					{/each}
+				</select>
+			</div>
+			<div>
+				<label for="e-invoice" class={labelCls}>Linked Invoice</label>
+				<select id="e-invoice" name="invoiceId" value={data.expense.invoiceId ?? ''} class={inputCls}>
+					<option value="">—</option>
+					{#each data.invoices as inv (inv.id)}
+						<option value={inv.id}>{inv.invoiceNumber} ({inv.direction})</option>
+					{/each}
+				</select>
+			</div>
+			<div class="md:col-span-2">
+				<label for="e-desc" class={labelCls}>Description</label>
+				<textarea id="e-desc" name="description" rows="2" class={inputCls}>{data.expense.description ?? ''}</textarea>
+			</div>
+			<div class="md:col-span-2 flex justify-end gap-2">
+				<button type="button" onclick={() => (editing = false)}
+					class="rounded-md border border-gray-300 px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50 dark:border-gray-600 dark:text-gray-200">Cancel</button>
+				<button type="submit" class="rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700">Save changes</button>
+			</div>
+			<p class="md:col-span-2 text-xs text-gray-500 dark:text-gray-400">Edits are audit-logged. If status is approved and amount/account changes, the ledger entry is re-posted.</p>
+		</form>
+	{:else}
+		<div class="grid grid-cols-1 gap-4 rounded-lg border border-gray-200 bg-white p-6 dark:border-gray-700 dark:bg-gray-800 md:grid-cols-2">
+			<div>
+				<p class="text-xs font-medium uppercase tracking-wider text-gray-400 dark:text-gray-500">Amount</p>
+				<p class="text-2xl font-bold text-gray-900 dark:text-white">{formatCurrency(data.expense.amount, data.expense.currency)}</p>
+			</div>
+			<div>
+				<p class="text-xs font-medium uppercase tracking-wider text-gray-400 dark:text-gray-500">Project</p>
+				<p class="text-sm text-gray-900 dark:text-white">
+					<a href={`/companies/${data.company.id}/projects/${data.expense.projectId}`}
+						class="text-blue-600 hover:text-blue-700 dark:text-blue-400">{data.expense.projectName}</a>
+				</p>
+			</div>
+			<div>
+				<p class="text-xs font-medium uppercase tracking-wider text-gray-400 dark:text-gray-500">Category</p>
+				<p class="text-sm text-gray-900 dark:text-white">{data.expense.categoryName ?? '—'}</p>
+			</div>
+			<div>
+				<p class="text-xs font-medium uppercase tracking-wider text-gray-400 dark:text-gray-500">Supplier</p>
+				<p class="text-sm text-gray-900 dark:text-white">{data.expense.partyName ?? '—'}</p>
+			</div>
+			<div>
+				<p class="text-xs font-medium uppercase tracking-wider text-gray-400 dark:text-gray-500">Account</p>
+				<p class="text-sm text-gray-900 dark:text-white">{data.expense.accountName ?? '—'}</p>
+			</div>
+			<div>
+				<p class="text-xs font-medium uppercase tracking-wider text-gray-400 dark:text-gray-500">Created</p>
+				<p class="text-sm text-gray-900 dark:text-white">{formatDate(data.expense.createdAt)}</p>
+			</div>
+			{#if data.expense.description}
+				<div class="md:col-span-2">
+					<p class="text-xs font-medium uppercase tracking-wider text-gray-400 dark:text-gray-500">Description</p>
+					<p class="whitespace-pre-wrap text-sm text-gray-700 dark:text-gray-300">{data.expense.description}</p>
+				</div>
+			{/if}
+			{#if data.expense.rejectionReason}
+				<div class="md:col-span-2 rounded-md bg-red-50 p-3 dark:bg-red-900/20">
+					<p class="text-xs font-medium uppercase tracking-wider text-red-500">Rejected</p>
+					<p class="text-sm text-red-700 dark:text-red-300">{data.expense.rejectionReason}</p>
+				</div>
+			{/if}
+		</div>
+
+		<!-- Invoice attachments -->
+		<div class="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
+			<h2 class="mb-3 font-semibold text-gray-900 dark:text-white">Invoice</h2>
+			<div class="mb-3 flex flex-wrap gap-2 text-sm">
+				{#if data.expense.invoiceFileUrl}
+					<a href={`/companies/${data.company.id}/expenses/${data.expense.id}/invoice`}
+						class="rounded-full bg-emerald-100 px-3 py-1 text-sm font-medium text-emerald-700 hover:bg-emerald-200 dark:bg-emerald-900/40 dark:text-emerald-300">
+						📄 {data.expense.invoiceFileName ?? 'Invoice file'}
+					</a>
+				{/if}
+				{#if data.expense.paperlessUrl}
+					<a href={data.expense.paperlessUrl} target="_blank" rel="noopener noreferrer"
+						class="rounded-full bg-purple-100 px-3 py-1 text-sm font-medium text-purple-700 hover:bg-purple-200 dark:bg-purple-900/40 dark:text-purple-300">
+						🗂 Paperless
+					</a>
+				{/if}
+				{#if !data.expense.invoiceFileUrl && !data.expense.paperlessUrl}
+					<span class="rounded-full bg-amber-100 px-3 py-1 text-sm font-medium text-amber-700 dark:bg-amber-900/40 dark:text-amber-300">
+						No invoice attached
+					</span>
+				{/if}
+			</div>
+
+			{#if canManage}
+				<div class="space-y-3 border-t border-gray-100 pt-3 dark:border-gray-700">
+					<form method="POST" action="?/uploadInvoice" enctype="multipart/form-data" use:enhance
+						class="flex flex-wrap items-center gap-2 text-sm">
+						<label class={labelCls + ' mb-0'} for="inv-file">Upload file:</label>
+						<input id="inv-file" name="file" type="file" accept="application/pdf,image/*" required
+							class="text-xs text-gray-700 dark:text-gray-300" />
+						<button type="submit"
+							class="rounded-md bg-blue-600 px-3 py-1 text-xs font-medium text-white hover:bg-blue-700">
+							Upload
+						</button>
+					</form>
+
+					<form method="POST" action="?/setPaperlessLink" use:enhance
+						class="flex flex-wrap items-center gap-2 text-sm">
+						<label class={labelCls + ' mb-0'} for="pless-url">Paperless URL:</label>
+						<input id="pless-url" name="paperlessUrl" type="url"
+							value={data.expense.paperlessUrl ?? ''}
+							placeholder="https://paperless.example.com/documents/123"
+							class="flex-1 min-w-0 rounded-md border border-gray-300 bg-white px-2 py-1 text-xs dark:border-gray-600 dark:bg-gray-700 dark:text-white" />
+						<button type="submit"
+							class="rounded-md border border-gray-300 bg-white px-3 py-1 text-xs font-medium text-gray-700 hover:bg-gray-50 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200">
+							Save
+						</button>
+					</form>
+				</div>
+			{/if}
+		</div>
+
+		<!-- Packages -->
+		<div class="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
+			<div class="mb-3 flex items-center justify-between">
+				<h2 class="font-semibold text-gray-900 dark:text-white">Linked Packages</h2>
+				{#if canManage}
+					<a href={`/companies/${data.company.id}/packages/new`}
+						class="rounded-md bg-blue-600 px-3 py-1.5 text-xs font-medium text-white hover:bg-blue-700">
+						+ New Package
+					</a>
+				{/if}
+			</div>
+
+			{#if data.linkedPackages.length > 0}
+				<div class="mb-3 flex flex-wrap gap-2">
+					{#each data.linkedPackages as pkg (pkg.id)}
+						<span class="inline-flex items-center gap-2 rounded-full bg-cyan-100 px-3 py-1 text-sm font-medium text-cyan-700 dark:bg-cyan-900/40 dark:text-cyan-300">
+							<a href={`/companies/${data.company.id}/packages/${pkg.id}`} class="hover:underline">
+								📦 {pkg.trackingNumber} — {pkg.carrier}
+							</a>
+							{#if canManage}
+								<form method="POST" action="?/unlinkPackage" use:enhance={() => async ({ update }) => await update({ reset: false })}>
+									<input type="hidden" name="packageId" value={pkg.id} />
+									<button type="submit" class="text-cyan-800 hover:text-red-600 dark:text-cyan-200">×</button>
+								</form>
+							{/if}
+						</span>
+					{/each}
+				</div>
+			{:else}
+				<p class="mb-3 text-sm text-gray-500 dark:text-gray-400">No packages linked yet.</p>
+			{/if}
+
+			{#if canManage}
+				{@const selectable = data.availablePackages.filter((p) => !data.linkedPackages.find((l) => l.id === p.id))}
+				{#if selectable.length > 0}
+					<form method="POST" action="?/linkPackage" use:enhance={() => async ({ update, formElement }) => {
+						await update({ reset: false });
+						formElement.reset();
+					}} class="flex items-center gap-2 border-t border-gray-100 pt-3 text-sm dark:border-gray-700">
+						<select name="packageId" required class={inputCls + ' flex-1'}>
+							<option value="" disabled selected>Select an existing package</option>
+							{#each selectable as pkg (pkg.id)}
+								<option value={pkg.id}>{pkg.trackingNumber} — {pkg.carrier} ({pkg.direction})</option>
+							{/each}
+						</select>
+						<button type="submit" class="rounded-md bg-blue-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-blue-700">
+							Link
+						</button>
+					</form>
+				{:else if data.availablePackages.length === 0}
+					<p class="border-t border-gray-100 pt-3 text-xs text-gray-500 dark:border-gray-700 dark:text-gray-400">
+						No packages exist yet. Use "+ New Package" above to create one.
+					</p>
+				{/if}
+			{/if}
+		</div>
+	{/if}
+</div>

src/routes/(app)/companies/[companyId]/expenses/[expenseId]/invoice/+server.ts

@@ -0,0 +1,43 @@
+import { error } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
+import { db } from '$lib/server/db/index.js';
+import { expenses, projects } from '$lib/server/db/schema.js';
+import { requireCompanyRoleAny } from '$lib/server/authorization.js';
+import { readCompanyFile } from '$lib/server/uploads/index.js';
+import { and, eq } from 'drizzle-orm';
+
+export const GET: RequestHandler = async ({ locals, params }) => {
+	await requireCompanyRoleAny(locals, params.companyId, [
+		'admin', 'manager', 'user', 'accountant'
+	]);
+
+	const [row] = await db
+		.select({
+			invoiceFileUrl: expenses.invoiceFileUrl,
+			invoiceFileName: expenses.invoiceFileName
+		})
+		.from(expenses)
+		.innerJoin(projects, eq(expenses.projectId, projects.id))
+		.where(and(eq(expenses.id, params.expenseId), eq(projects.companyId, params.companyId)))
+		.limit(1);
+
+	if (!row || !row.invoiceFileUrl) error(404, 'Invoice file not found');
+
+	let buf: Buffer;
+	try {
+		buf = await readCompanyFile(row.invoiceFileUrl);
+	} catch (err) {
+		console.error('readCompanyFile failed', err);
+		error(404, 'File missing on disk');
+	}
+
+	const safeName = (row.invoiceFileName ?? 'invoice').replace(/[\r\n"\\]/g, '_');
+
+	return new Response(new Blob([buf as BlobPart]), {
+		headers: {
+			'Content-Disposition': `attachment; filename="${safeName}"`,
+			'Cache-Control': 'private, no-store',
+			'X-Content-Type-Options': 'nosniff'
+		}
+	});
+};

src/routes/(app)/companies/[companyId]/invoices/[invoiceId]/+page.server.ts

@@ -34,6 +34,8 @@ export const load: PageServerLoad = async ({ locals, params }) => {
 			total: invoices.total,
 			currency: invoices.currency,
 			notes: invoices.notes,
+			voidedAt: invoices.voidedAt,
+			voidReason: invoices.voidReason,
 			expenseId: invoices.expenseId,
 			paymentAccountId: invoices.paymentAccountId,
 			createdAt: invoices.createdAt,
@@ -173,6 +175,52 @@ export const actions: Actions = {
 		return { success: true };
 	},
 
+	voidInvoice: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin',
+			'accountant'
+		]);
+		const fd = await request.formData();
+		const reason = fd.get('reason')?.toString().trim();
+
+		if (!reason) return fail(400, { error: 'Void reason is required' });
+
+		const [inv] = await db
+			.select({ invoiceNumber: invoices.invoiceNumber, status: invoices.status })
+			.from(invoices)
+			.where(and(eq(invoices.id, params.invoiceId), eq(invoices.companyId, params.companyId)))
+			.limit(1);
+
+		if (!inv) return fail(404, { error: 'Invoice not found' });
+		if (inv.status === 'voided') return fail(400, { error: 'Invoice is already voided' });
+
+		await db.transaction(async (tx) => {
+			await tx
+				.update(invoices)
+				.set({
+					status: 'voided',
+					voidedAt: new Date(),
+					voidReason: reason,
+					updatedAt: new Date()
+				})
+				.where(and(eq(invoices.id, params.invoiceId), eq(invoices.companyId, params.companyId)));
+
+			if (inv.status === 'paid') {
+				await removeInvoicePaymentTransaction(params.invoiceId, tx);
+			}
+		});
+
+		await logCompanyEvent(
+			params.companyId,
+			user.id,
+			'invoice_voided',
+			`Invoice ${inv.invoiceNumber} voided: ${reason}`,
+			{ invoiceId: params.invoiceId, reason }
+		);
+
+		return { success: true, voided: true };
+	},
+
 	linkExpense: async ({ request, locals, params }) => {
 		const { user } = await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager']);
 		const formData = await request.formData();

src/routes/(app)/companies/[companyId]/invoices/[invoiceId]/+page.svelte

@@ -16,7 +16,8 @@
 		sent: 'bg-blue-100 text-blue-700 dark:bg-blue-900/40 dark:text-blue-300',
 		paid: 'bg-green-100 text-green-700 dark:bg-green-900/40 dark:text-green-300',
 		overdue: 'bg-red-100 text-red-700 dark:bg-red-900/40 dark:text-red-300',
-		cancelled: 'bg-gray-100 text-gray-500 dark:bg-gray-700 dark:text-gray-500'
+		cancelled: 'bg-gray-100 text-gray-500 dark:bg-gray-700 dark:text-gray-500',
+		voided: 'bg-red-200 text-red-800 line-through dark:bg-red-900/50 dark:text-red-300'
 	};
 
 	const nextStatuses: Record<string, string[]> = {
@@ -24,9 +25,17 @@
 		sent: ['paid', 'overdue', 'cancelled'],
 		overdue: ['paid', 'cancelled'],
 		paid: [],
-		cancelled: []
+		cancelled: [],
+		voided: []
 	};
 
+	const canVoid = $derived(
+		data.companyRoles.some((r: string) => r === 'admin' || r === 'accountant') &&
+			inv.status !== 'voided' &&
+			inv.status !== 'cancelled'
+	);
+	let showVoidForm = $state(false);
+
 	let showLinkExpense = $state(false);
 	let selectedProject = $state('');
 </script>
@@ -241,8 +250,56 @@
 					class="rounded-md border border-gray-300 dark:border-gray-600 px-3 py-1.5 text-sm font-medium text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700">
 					Download PDF
 				</a>
+
+				{#if canVoid}
+					<button type="button" onclick={() => (showVoidForm = !showVoidForm)}
+						class="rounded-md border border-red-300 px-3 py-1.5 text-sm font-medium text-red-600 hover:bg-red-50 dark:border-red-700 dark:text-red-400 dark:hover:bg-red-900/20">
+						Void Invoice
+					</button>
+				{/if}
 			</div>
 
+			{#if showVoidForm}
+				<form method="POST" action="?/voidInvoice"
+					use:enhance={() => async ({ update }) => {
+						await update({ reset: false });
+						showVoidForm = false;
+					}}
+					class="mt-4 rounded-md border border-red-200 bg-red-50 p-4 dark:border-red-700 dark:bg-red-900/20">
+					<p class="mb-2 text-sm font-medium text-red-700 dark:text-red-300">
+						Void invoice {inv.invoiceNumber}? This will reverse any ledger entry and cannot be undone.
+					</p>
+					<label for="void-reason" class="mb-1 block text-sm font-medium text-gray-700 dark:text-gray-300">
+						Reason <span class="text-red-500">*</span>
+					</label>
+					<textarea
+						id="void-reason"
+						name="reason"
+						rows="2"
+						required
+						placeholder="e.g. Duplicate invoice, incorrect amount, wrong vendor"
+						class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-700 dark:text-white"
+					></textarea>
+					<div class="mt-2 flex justify-end gap-2">
+						<button type="button" onclick={() => (showVoidForm = false)}
+							class="rounded-md border border-gray-300 px-3 py-1.5 text-sm font-medium text-gray-700 dark:border-gray-600 dark:text-gray-200">
+							Cancel
+						</button>
+						<button type="submit"
+							class="rounded-md bg-red-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-red-700">
+							Confirm Void
+						</button>
+					</div>
+				</form>
+			{/if}
+
+			{#if inv.status === 'voided' && inv.voidReason}
+				<div class="mt-4 rounded-md border border-red-200 bg-red-50 p-3 text-sm dark:border-red-700 dark:bg-red-900/20">
+					<span class="font-medium text-red-700 dark:text-red-300">Voided:</span>
+					<span class="text-red-600 dark:text-red-400">{inv.voidReason}</span>
+				</div>
+			{/if}
+
 			<!-- Link expense (incoming only, not already linked) -->
 			{#if inv.direction === 'incoming' && !inv.expenseId}
 				<div class="mt-4 border-t border-gray-100 dark:border-gray-700 pt-4">

src/routes/(app)/companies/[companyId]/projects/+page.server.ts

@@ -1,6 +1,6 @@
 import type { PageServerLoad } from './$types';
 import { db } from '$lib/server/db/index.js';
-import { projects, expenses } from '$lib/server/db/schema.js';
+import { projects, expenses, companyAccounts } from '$lib/server/db/schema.js';
 import { eq, sql } from 'drizzle-orm';
 
 export const load: PageServerLoad = async ({ parent }) => {
@@ -13,12 +13,13 @@ export const load: PageServerLoad = async ({ parent }) => {
 			description: projects.description,
 			allocatedBudget: projects.allocatedBudget,
 			isActive: projects.isActive,
-			spent: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} else 0 end), 0)`,
+			spent: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} * coalesce(${companyAccounts.fxRateToBase}, 1) else 0 end), 0)::text`,
 			expenseCount: sql<number>`count(${expenses.id})::int`,
 			pendingCount: sql<number>`count(case when ${expenses.status} = 'pending' then 1 end)::int`
 		})
 		.from(projects)
 		.leftJoin(expenses, eq(expenses.projectId, projects.id))
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
 		.where(eq(projects.companyId, company.id))
 		.groupBy(projects.id)
 		.orderBy(projects.name);

src/routes/(app)/companies/[companyId]/projects/[projectId]/+page.server.ts

@@ -1,7 +1,7 @@
 import { error, fail } from '@sveltejs/kit';
 import type { Actions, PageServerLoad } from './$types';
 import { db } from '$lib/server/db/index.js';
-import { projects, expenses, users, categories } from '$lib/server/db/schema.js';
+import { projects, expenses, users, categories, companyAccounts } from '$lib/server/db/schema.js';
 import { eq, and, sql } from 'drizzle-orm';
 import { requireCompanyRole } from '$lib/server/authorization.js';
 import { logCompanyEvent } from '$lib/server/audit.js';
@@ -41,11 +41,12 @@ export const load: PageServerLoad = async ({ params, parent }) => {
 
 	const [stats] = await db
 		.select({
-			totalApproved: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} else 0 end), 0)`,
+			totalApproved: sql<string>`coalesce(sum(case when ${expenses.status} = 'approved' then ${expenses.amount} * coalesce(${companyAccounts.fxRateToBase}, 1) else 0 end), 0)::text`,
-			totalPending: sql<string>`coalesce(sum(case when ${expenses.status} = 'pending' then ${expenses.amount} else 0 end), 0)`,
+			totalPending: sql<string>`coalesce(sum(case when ${expenses.status} = 'pending' then ${expenses.amount} * coalesce(${companyAccounts.fxRateToBase}, 1) else 0 end), 0)::text`,
 			count: sql<number>`count(*)::int`
 		})
 		.from(expenses)
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
 		.where(eq(expenses.projectId, params.projectId));
 
 	return { project, expenses: expenseList, stats };

src/routes/(app)/companies/[companyId]/projects/[projectId]/+page.svelte

@@ -122,8 +122,9 @@
 					</tr>
 				</thead>
 				<tbody>
-					{#each data.expenses as expense}
+					{#each data.expenses as expense (expense.id)}
-						<tr class="border-t border-gray-100 dark:border-gray-700">
+						<tr class="cursor-pointer border-t border-gray-100 transition-colors hover:bg-gray-50 dark:border-gray-700 dark:hover:bg-gray-700/40"
+							onclick={() => (window.location.href = `/companies/${data.company.id}/expenses/${expense.id}`)}>
 							<td class="px-4 py-3 font-medium text-gray-900 dark:text-white">{expense.title}</td>
 							<td class="px-4 py-3 text-gray-500 dark:text-gray-400">{expense.categoryName ?? '—'}</td>
 							<td class="px-4 py-3 dark:text-white">{formatCurrency(expense.amount, expense.currency)}</td>

src/routes/(app)/companies/[companyId]/reports/+page.server.ts

@@ -1,6 +1,6 @@
 import type { PageServerLoad } from './$types';
 import { db } from '$lib/server/db/index.js';
-import { expenses, projects, categories } from '$lib/server/db/schema.js';
+import { expenses, projects, categories, companyAccounts } from '$lib/server/db/schema.js';
 import { eq, and, sql, gte, lte } from 'drizzle-orm';
 
 export const load: PageServerLoad = async ({ parent, params, url }) => {
@@ -9,16 +9,20 @@ export const load: PageServerLoad = async ({ parent, params, url }) => {
 	const from = url.searchParams.get('from') || new Date(new Date().getFullYear(), 0, 1).toISOString().split('T')[0];
 	const to = url.searchParams.get('to') || new Date().toISOString().split('T')[0];
 
+	// All amounts converted to company base currency via account FX rate.
+	const convertedAmount = sql<string>`${expenses.amount} * coalesce(${companyAccounts.fxRateToBase}, 1)`;
+
 	// Spending by category
 	const byCategory = await db
 		.select({
 			categoryName: sql<string>`coalesce(${categories.name}, 'Uncategorized')`,
 			categoryColor: sql<string>`coalesce(${categories.color}, '#9CA3AF')`,
-			total: sql<string>`sum(${expenses.amount})`
+			total: sql<string>`sum(${convertedAmount})::text`
 		})
 		.from(expenses)
 		.innerJoin(projects, eq(expenses.projectId, projects.id))
 		.leftJoin(categories, eq(expenses.categoryId, categories.id))
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
 		.where(
 			and(
 				eq(projects.companyId, params.companyId),
@@ -34,10 +38,11 @@ export const load: PageServerLoad = async ({ parent, params, url }) => {
 		.select({
 			projectName: projects.name,
 			allocated: projects.allocatedBudget,
-			spent: sql<string>`sum(${expenses.amount})`
+			spent: sql<string>`sum(${convertedAmount})::text`
 		})
 		.from(expenses)
 		.innerJoin(projects, eq(expenses.projectId, projects.id))
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
 		.where(
 			and(
 				eq(projects.companyId, params.companyId),
@@ -52,10 +57,11 @@ export const load: PageServerLoad = async ({ parent, params, url }) => {
 	const byMonth = await db
 		.select({
 			month: sql<string>`to_char(${expenses.expenseDate}::date, 'YYYY-MM')`,
-			total: sql<string>`sum(${expenses.amount})`
+			total: sql<string>`sum(${convertedAmount})::text`
 		})
 		.from(expenses)
 		.innerJoin(projects, eq(expenses.projectId, projects.id))
+		.leftJoin(companyAccounts, eq(expenses.accountId, companyAccounts.id))
 		.where(
 			and(
 				eq(projects.companyId, params.companyId),

src/routes/(app)/companies/[companyId]/sales/+page.server.ts

@@ -0,0 +1,110 @@
+import { fail, redirect } from '@sveltejs/kit';
+import type { Actions, PageServerLoad } from './$types';
+import { db } from '$lib/server/db/index.js';
+import { sales, saleLineItems, parties, projects, users } from '$lib/server/db/schema.js';
+import { requireCompanyRoleAny } from '$lib/server/authorization.js';
+import { logCompanyEvent } from '$lib/server/audit.js';
+import { and, asc, desc, eq, isNull, sql } from 'drizzle-orm';
+
+function trimOrNull(v: FormDataEntryValue | null): string | null {
+	const s = v?.toString().trim();
+	return s ? s : null;
+}
+
+export const load: PageServerLoad = async ({ locals, params, parent, url }) => {
+	await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+	await parent();
+
+	const status = url.searchParams.get('status') ?? 'all';
+
+	const whereClauses = [eq(sales.companyId, params.companyId), isNull(sales.deletedAt)];
+	if (status !== 'all' && ['draft', 'confirmed', 'voided'].includes(status)) {
+		whereClauses.push(eq(sales.status, status as 'draft' | 'confirmed' | 'voided'));
+	}
+
+	const salesList = await db
+		.select({
+			id: sales.id,
+			title: sales.title,
+			saleDate: sales.saleDate,
+			status: sales.status,
+			currency: sales.currency,
+			projectId: sales.projectId,
+			projectName: projects.name,
+			partyId: sales.partyId,
+			partyName: parties.name,
+			withholdingTaxRate: sales.withholdingTaxRate,
+			createdByName: users.displayName,
+			createdAt: sales.createdAt,
+			grossTotal: sql<string>`coalesce((
+				select sum(${saleLineItems.quantity} * ${saleLineItems.unitPrice} * (1 + ${saleLineItems.taxRate}))::text
+				from sale_line_items
+				where sale_id = ${sales.id}
+			), '0')`
+		})
+		.from(sales)
+		.leftJoin(projects, eq(sales.projectId, projects.id))
+		.leftJoin(parties, eq(sales.partyId, parties.id))
+		.leftJoin(users, eq(sales.createdBy, users.id))
+		.where(and(...whereClauses))
+		.orderBy(desc(sales.saleDate));
+
+	const partyList = await db
+		.select({ id: parties.id, name: parties.name })
+		.from(parties)
+		.where(and(eq(parties.companyId, params.companyId), isNull(parties.deletedAt)))
+		.orderBy(asc(parties.name));
+
+	const projectList = await db
+		.select({ id: projects.id, name: projects.name })
+		.from(projects)
+		.where(and(eq(projects.companyId, params.companyId), eq(projects.isActive, true)))
+		.orderBy(asc(projects.name));
+
+	return {
+		sales: salesList,
+		statusFilter: status,
+		parties: partyList,
+		projects: projectList
+	};
+};
+
+export const actions: Actions = {
+	createSale: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'accountant'
+		]);
+		const fd = await request.formData();
+		const title = trimOrNull(fd.get('title'));
+		const saleDate = trimOrNull(fd.get('saleDate'));
+		const projectId = trimOrNull(fd.get('projectId'));
+		const partyId = trimOrNull(fd.get('partyId'));
+		const withholdingRaw = fd.get('withholdingTaxRate')?.toString().trim();
+		const withholdingTaxRate = withholdingRaw ? Number(withholdingRaw) / 100 : 0;
+
+		if (!title) return fail(400, { action: 'createSale', error: 'Title is required' });
+		if (!saleDate) return fail(400, { action: 'createSale', error: 'Sale date is required' });
+		if (withholdingTaxRate < 0 || withholdingTaxRate > 1) {
+			return fail(400, { action: 'createSale', error: 'Withholding rate must be 0–100%' });
+		}
+
+		const [inserted] = await db
+			.insert(sales)
+			.values({
+				companyId: params.companyId,
+				title,
+				saleDate,
+				projectId,
+				partyId,
+				withholdingTaxRate: withholdingTaxRate.toFixed(4),
+				createdBy: user.id,
+				status: 'draft'
+			})
+			.returning({ id: sales.id });
+
+		await logCompanyEvent(params.companyId, user.id, 'sale_created',
+			`Sale "${title}" created`, { saleId: inserted.id });
+
+		redirect(303, `/companies/${params.companyId}/sales/${inserted.id}`);
+	}
+};

src/routes/(app)/companies/[companyId]/sales/+page.svelte

@@ -0,0 +1,142 @@
+<script lang="ts">
+	import { enhance } from '$app/forms';
+	import { formatCurrency } from '$lib/utils/currency.js';
+	import type { PageData, ActionData } from './$types';
+
+	let { data, form }: { data: PageData; form: ActionData } = $props();
+
+	let showAddForm = $state(false);
+	const todayIso = new Date().toISOString().slice(0, 10);
+
+	const STATUS_BADGE: Record<string, string> = {
+		draft: 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-400',
+		confirmed: 'bg-green-100 text-green-700 dark:bg-green-900/40 dark:text-green-300',
+		voided: 'bg-red-200 text-red-800 line-through dark:bg-red-900/50 dark:text-red-300'
+	};
+
+	const inputCls = 'w-full rounded-md border border-gray-300 px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-700 dark:text-white';
+	const labelCls = 'mb-1 block text-sm font-medium text-gray-700 dark:text-gray-300';
+</script>
+
+<svelte:head>
+	<title>Sales - {data.company.name}</title>
+</svelte:head>
+
+<div class="space-y-6">
+	<header class="flex items-start justify-between gap-4">
+		<div>
+			<h1 class="text-2xl font-bold text-gray-900 dark:text-white">Sales</h1>
+			<p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+				Revenue events. Confirmed sales contribute to project budget.
+			</p>
+		</div>
+		<button type="button" onclick={() => (showAddForm = !showAddForm)}
+			class="rounded-md bg-blue-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-blue-700">
+			{showAddForm ? 'Cancel' : '+ New Sale'}
+		</button>
+	</header>
+
+	{#if form?.error}
+		<div class="rounded-md bg-red-50 p-3 text-sm text-red-700 dark:bg-red-900/30 dark:text-red-300">{form.error}</div>
+	{/if}
+
+	{#if showAddForm}
+		<section class="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
+			<form method="POST" action="?/createSale" use:enhance class="grid grid-cols-1 gap-3 md:grid-cols-2">
+				<div class="md:col-span-2">
+					<label for="sale-title" class={labelCls}>Title <span class="text-red-500">*</span></label>
+					<input id="sale-title" name="title" type="text" required class={inputCls} placeholder="e.g. 15 widgets to ABC Corp" />
+				</div>
+				<div>
+					<label for="sale-date" class={labelCls}>Sale Date <span class="text-red-500">*</span></label>
+					<input id="sale-date" name="saleDate" type="date" required value={todayIso} class={inputCls} />
+				</div>
+				<div>
+					<label for="sale-wht" class={labelCls}>Withholding Tax %</label>
+					<input id="sale-wht" name="withholdingTaxRate" type="number" step="0.01" min="0" max="100" value="0" class={inputCls} />
+				</div>
+				<div>
+					<label for="sale-project" class={labelCls}>Project</label>
+					<select id="sale-project" name="projectId" class={inputCls}>
+						<option value="">—</option>
+						{#each data.projects as p (p.id)}
+							<option value={p.id}>{p.name}</option>
+						{/each}
+					</select>
+				</div>
+				<div>
+					<label for="sale-party" class={labelCls}>Customer</label>
+					<select id="sale-party" name="partyId" class={inputCls}>
+						<option value="">—</option>
+						{#each data.parties as p (p.id)}
+							<option value={p.id}>{p.name}</option>
+						{/each}
+					</select>
+				</div>
+				<div class="md:col-span-2 flex justify-end">
+					<button type="submit" class="rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700">
+						Create Draft
+					</button>
+				</div>
+			</form>
+			<p class="mt-2 text-xs text-gray-500 dark:text-gray-400">
+				After creating the sale, add line items on the detail page.
+			</p>
+		</section>
+	{/if}
+
+	<!-- Status filter -->
+	<div class="flex gap-2">
+		{#each ['all', 'draft', 'confirmed', 'voided'] as s (s)}
+			<a href="?status={s}"
+				class="rounded-full px-3 py-1 text-xs font-medium {data.statusFilter === s
+					? 'bg-gray-900 text-white dark:bg-white dark:text-gray-900'
+					: 'bg-gray-100 text-gray-600 hover:bg-gray-200 dark:bg-gray-700 dark:text-gray-400 dark:hover:bg-gray-600'}">
+				{s.charAt(0).toUpperCase() + s.slice(1)}
+			</a>
+		{/each}
+	</div>
+
+	{#if data.sales.length === 0}
+		<div class="rounded-lg border border-dashed border-gray-300 bg-white p-10 text-center dark:border-gray-700 dark:bg-gray-800">
+			<p class="text-sm text-gray-500 dark:text-gray-400">No sales yet.</p>
+		</div>
+	{:else}
+		<div class="overflow-hidden rounded-lg border border-gray-200 bg-white dark:border-gray-700 dark:bg-gray-800">
+			<table class="min-w-full divide-y divide-gray-200 text-sm dark:divide-gray-700">
+				<thead class="bg-gray-50 dark:bg-gray-700/50">
+					<tr>
+						<th class="px-4 py-3 text-left font-semibold text-gray-700 dark:text-gray-300">Title</th>
+						<th class="px-4 py-3 text-left font-semibold text-gray-700 dark:text-gray-300">Date</th>
+						<th class="px-4 py-3 text-left font-semibold text-gray-700 dark:text-gray-300">Customer</th>
+						<th class="px-4 py-3 text-right font-semibold text-gray-700 dark:text-gray-300">Gross</th>
+						<th class="px-4 py-3 text-left font-semibold text-gray-700 dark:text-gray-300">Status</th>
+					</tr>
+				</thead>
+				<tbody class="divide-y divide-gray-200 dark:divide-gray-700">
+					{#each data.sales as sale (sale.id)}
+						<tr class="cursor-pointer hover:bg-gray-50 dark:hover:bg-gray-700/40"
+							onclick={() => (window.location.href = `/companies/${data.company.id}/sales/${sale.id}`)}>
+							<td class="px-4 py-3">
+								<div class="font-medium text-gray-900 dark:text-white">{sale.title}</div>
+								{#if sale.projectName}
+									<div class="text-xs text-gray-500 dark:text-gray-400">Project: {sale.projectName}</div>
+								{/if}
+							</td>
+							<td class="px-4 py-3 text-gray-600 dark:text-gray-300">{sale.saleDate}</td>
+							<td class="px-4 py-3 text-gray-600 dark:text-gray-300">{sale.partyName ?? '—'}</td>
+							<td class="px-4 py-3 text-right font-medium text-gray-900 dark:text-white">
+								{formatCurrency(sale.grossTotal, sale.currency)}
+							</td>
+							<td class="px-4 py-3">
+								<span class="rounded-full px-2 py-0.5 text-xs font-medium {STATUS_BADGE[sale.status]}">
+									{sale.status}
+								</span>
+							</td>
+						</tr>
+					{/each}
+				</tbody>
+			</table>
+		</div>
+	{/if}
+</div>

src/routes/(app)/companies/[companyId]/sales/[saleId]/+page.server.ts

@@ -0,0 +1,297 @@
+import { error, fail, redirect } from '@sveltejs/kit';
+import type { Actions, PageServerLoad } from './$types';
+import { db } from '$lib/server/db/index.js';
+import {
+	sales,
+	saleLineItems,
+	salePackages,
+	parties,
+	projects,
+	packages,
+	invoices
+} from '$lib/server/db/schema.js';
+import { requireCompanyRoleAny } from '$lib/server/authorization.js';
+import { logCompanyEvent } from '$lib/server/audit.js';
+import { and, asc, eq, isNull, ne, sql } from 'drizzle-orm';
+
+function trimOrNull(v: FormDataEntryValue | null): string | null {
+	const s = v?.toString().trim();
+	return s ? s : null;
+}
+
+export const load: PageServerLoad = async ({ locals, params, parent }) => {
+	await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+	await parent();
+
+	const [sale] = await db
+		.select()
+		.from(sales)
+		.where(
+			and(
+				eq(sales.id, params.saleId),
+				eq(sales.companyId, params.companyId),
+				isNull(sales.deletedAt)
+			)
+		)
+		.limit(1);
+
+	if (!sale) error(404, 'Sale not found');
+
+	const lineItems = await db
+		.select()
+		.from(saleLineItems)
+		.where(eq(saleLineItems.saleId, params.saleId))
+		.orderBy(asc(saleLineItems.sortOrder), asc(saleLineItems.createdAt));
+
+	const linkedPkgRows = await db
+		.select({
+			packageId: salePackages.packageId,
+			trackingNumber: packages.trackingNumber,
+			carrier: packages.carrier,
+			status: packages.status,
+			direction: packages.direction
+		})
+		.from(salePackages)
+		.innerJoin(packages, eq(salePackages.packageId, packages.id))
+		.where(eq(salePackages.saleId, params.saleId));
+
+	const availablePackages = await db
+		.select({
+			id: packages.id,
+			trackingNumber: packages.trackingNumber,
+			carrier: packages.carrier,
+			direction: packages.direction
+		})
+		.from(packages)
+		.where(eq(packages.companyId, params.companyId))
+		.orderBy(sql`${packages.createdAt} desc`);
+
+	const [party] = sale.partyId
+		? await db
+				.select({ id: parties.id, name: parties.name })
+				.from(parties)
+				.where(eq(parties.id, sale.partyId))
+				.limit(1)
+		: [null];
+
+	const [project] = sale.projectId
+		? await db
+				.select({ id: projects.id, name: projects.name })
+				.from(projects)
+				.where(eq(projects.id, sale.projectId))
+				.limit(1)
+		: [null];
+
+	const partyList = await db
+		.select({ id: parties.id, name: parties.name })
+		.from(parties)
+		.where(and(eq(parties.companyId, params.companyId), isNull(parties.deletedAt)))
+		.orderBy(asc(parties.name));
+
+	const projectList = await db
+		.select({ id: projects.id, name: projects.name })
+		.from(projects)
+		.where(and(eq(projects.companyId, params.companyId), eq(projects.isActive, true)))
+		.orderBy(asc(projects.name));
+
+	const invoiceList = await db
+		.select({
+			id: invoices.id,
+			invoiceNumber: invoices.invoiceNumber,
+			direction: invoices.direction
+		})
+		.from(invoices)
+		.where(
+			and(
+				eq(invoices.companyId, params.companyId),
+				eq(invoices.direction, 'outgoing'),
+				ne(invoices.status, 'voided')
+			)
+		)
+		.orderBy(asc(invoices.invoiceNumber));
+
+	return {
+		sale,
+		lineItems,
+		linkedPackages: linkedPkgRows,
+		availablePackages,
+		party,
+		project,
+		parties: partyList,
+		projects: projectList,
+		invoices: invoiceList
+	};
+};
+
+export const actions: Actions = {
+	updateSale: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'accountant'
+		]);
+		const fd = await request.formData();
+		const title = trimOrNull(fd.get('title'));
+		const saleDate = trimOrNull(fd.get('saleDate'));
+		const projectId = trimOrNull(fd.get('projectId'));
+		const partyId = trimOrNull(fd.get('partyId'));
+		const invoiceId = trimOrNull(fd.get('invoiceId'));
+		const notes = trimOrNull(fd.get('notes'));
+		const withholdingRaw = fd.get('withholdingTaxRate')?.toString().trim();
+		const withholdingTaxRate = withholdingRaw ? Number(withholdingRaw) / 100 : 0;
+
+		if (!title) return fail(400, { action: 'updateSale', error: 'Title is required' });
+		if (!saleDate) return fail(400, { action: 'updateSale', error: 'Date is required' });
+
+		await db
+			.update(sales)
+			.set({
+				title,
+				saleDate,
+				projectId,
+				partyId,
+				invoiceId,
+				notes,
+				withholdingTaxRate: withholdingTaxRate.toFixed(4),
+				updatedAt: new Date()
+			})
+			.where(
+				and(eq(sales.id, params.saleId), eq(sales.companyId, params.companyId))
+			);
+
+		return { success: true, action: 'updateSale' };
+	},
+
+	addLineItem: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const productName = trimOrNull(fd.get('productName'));
+		const description = trimOrNull(fd.get('description'));
+		const quantity = fd.get('quantity')?.toString().trim();
+		const unitPrice = fd.get('unitPrice')?.toString().trim();
+		const taxPct = fd.get('taxRate')?.toString().trim();
+
+		if (!productName) return fail(400, { action: 'addLineItem', error: 'Product name required' });
+		if (!quantity || Number(quantity) <= 0) return fail(400, { action: 'addLineItem', error: 'Valid quantity required' });
+		if (!unitPrice || Number(unitPrice) < 0) return fail(400, { action: 'addLineItem', error: 'Valid unit price required' });
+
+		const taxRate = taxPct ? Number(taxPct) / 100 : 0;
+
+		const [maxRow] = await db
+			.select({ max: sql<number>`coalesce(max(${saleLineItems.sortOrder}), -1)::int` })
+			.from(saleLineItems)
+			.where(eq(saleLineItems.saleId, params.saleId));
+
+		await db.insert(saleLineItems).values({
+			saleId: params.saleId,
+			productName,
+			description,
+			quantity: Number(quantity).toFixed(4),
+			unitPrice: Number(unitPrice).toFixed(2),
+			taxRate: taxRate.toFixed(4),
+			sortOrder: (maxRow?.max ?? -1) + 1
+		});
+
+		return { success: true, action: 'addLineItem' };
+	},
+
+	removeLineItem: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const itemId = trimOrNull(fd.get('itemId'));
+		if (!itemId) return fail(400, { action: 'removeLineItem', error: 'Item id required' });
+
+		await db
+			.delete(saleLineItems)
+			.where(and(eq(saleLineItems.id, itemId), eq(saleLineItems.saleId, params.saleId)));
+
+		return { success: true, action: 'removeLineItem' };
+	},
+
+	confirmSale: async ({ locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, [
+			'admin', 'manager', 'accountant'
+		]);
+
+		const [lineCount] = await db
+			.select({ count: sql<number>`count(*)::int` })
+			.from(saleLineItems)
+			.where(eq(saleLineItems.saleId, params.saleId));
+
+		if (!lineCount || lineCount.count === 0) {
+			return fail(400, { action: 'confirmSale', error: 'Add at least one line item before confirming' });
+		}
+
+		const [updated] = await db
+			.update(sales)
+			.set({ status: 'confirmed', updatedAt: new Date() })
+			.where(
+				and(
+					eq(sales.id, params.saleId),
+					eq(sales.companyId, params.companyId),
+					eq(sales.status, 'draft')
+				)
+			)
+			.returning({ title: sales.title });
+
+		if (!updated) return fail(400, { action: 'confirmSale', error: 'Sale not found or not in draft' });
+
+		await logCompanyEvent(params.companyId, user.id, 'sale_confirmed',
+			`Sale "${updated.title}" confirmed`, { saleId: params.saleId });
+
+		return { success: true, action: 'confirmSale' };
+	},
+
+	voidSale: async ({ request, locals, params }) => {
+		const { user } = await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager']);
+		const fd = await request.formData();
+		const reason = trimOrNull(fd.get('reason'));
+		if (!reason) return fail(400, { action: 'voidSale', error: 'Void reason is required' });
+
+		const [updated] = await db
+			.update(sales)
+			.set({
+				status: 'voided',
+				voidedAt: new Date(),
+				voidReason: reason,
+				updatedAt: new Date()
+			})
+			.where(
+				and(eq(sales.id, params.saleId), eq(sales.companyId, params.companyId))
+			)
+			.returning({ title: sales.title });
+
+		if (!updated) return fail(404, { action: 'voidSale', error: 'Sale not found' });
+
+		await logCompanyEvent(params.companyId, user.id, 'sale_voided',
+			`Sale "${updated.title}" voided: ${reason}`,
+			{ saleId: params.saleId, reason });
+
+		return { success: true, action: 'voidSale' };
+	},
+
+	linkPackage: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const packageId = trimOrNull(fd.get('packageId'));
+		if (!packageId) return fail(400, { error: 'Package id required' });
+
+		await db
+			.insert(salePackages)
+			.values({ saleId: params.saleId, packageId })
+			.onConflictDoNothing();
+
+		return { success: true, action: 'linkPackage' };
+	},
+
+	unlinkPackage: async ({ request, locals, params }) => {
+		await requireCompanyRoleAny(locals, params.companyId, ['admin', 'manager', 'accountant']);
+		const fd = await request.formData();
+		const packageId = trimOrNull(fd.get('packageId'));
+		if (!packageId) return fail(400, { error: 'Package id required' });
+
+		await db
+			.delete(salePackages)
+			.where(and(eq(salePackages.saleId, params.saleId), eq(salePackages.packageId, packageId)));
+
+		return { success: true, action: 'unlinkPackage' };
+	}
+};

src/routes/(app)/companies/[companyId]/sales/[saleId]/+page.svelte

@@ -0,0 +1,327 @@
+<script lang="ts">
+	import { enhance } from '$app/forms';
+	import { formatCurrency } from '$lib/utils/currency.js';
+	import type { PageData, ActionData } from './$types';
+
+	let { data, form }: { data: PageData; form: ActionData } = $props();
+
+	let showAddItem = $state(false);
+	let editingMeta = $state(false);
+	let showVoidForm = $state(false);
+
+	const STATUS_BADGE: Record<string, string> = {
+		draft: 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-400',
+		confirmed: 'bg-green-100 text-green-700 dark:bg-green-900/40 dark:text-green-300',
+		voided: 'bg-red-200 text-red-800 dark:bg-red-900/50 dark:text-red-300'
+	};
+
+	const isLive = $derived(data.sale.status === 'draft');
+
+	const totals = $derived.by(() => {
+		let subtotal = 0;
+		let tax = 0;
+		for (const li of data.lineItems) {
+			const lineNet = Number(li.quantity) * Number(li.unitPrice);
+			subtotal += lineNet;
+			tax += lineNet * Number(li.taxRate);
+		}
+		const gross = subtotal + tax;
+		const withholding = gross * Number(data.sale.withholdingTaxRate);
+		const net = gross - withholding;
+		return { subtotal, tax, gross, withholding, net };
+	});
+
+	const inputCls = 'w-full rounded-md border border-gray-300 px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-700 dark:text-white';
+	const labelCls = 'mb-1 block text-sm font-medium text-gray-700 dark:text-gray-300';
+</script>
+
+<svelte:head>
+	<title>{data.sale.title} - Sales</title>
+</svelte:head>
+
+<div class="space-y-6">
+	<header>
+		<a href={`/companies/${data.company.id}/sales`} class="text-sm text-blue-600 hover:text-blue-700 dark:text-blue-400">&larr; Sales</a>
+		<div class="mt-1 flex items-start justify-between gap-3">
+			<div>
+				<h1 class="text-2xl font-bold text-gray-900 dark:text-white">{data.sale.title}</h1>
+				<div class="mt-2 flex flex-wrap items-center gap-3 text-sm text-gray-500 dark:text-gray-400">
+					<span class="rounded-full px-2 py-0.5 text-xs font-medium {STATUS_BADGE[data.sale.status]}">
+						{data.sale.status}
+					</span>
+					<span>{data.sale.saleDate}</span>
+					{#if data.party}<span>Customer: {data.party.name}</span>{/if}
+					{#if data.project}<span>Project: {data.project.name}</span>{/if}
+				</div>
+			</div>
+			<button type="button" onclick={() => (editingMeta = !editingMeta)}
+				class="rounded-md border border-gray-300 px-3 py-1.5 text-sm font-medium text-gray-700 hover:bg-gray-50 dark:border-gray-600 dark:text-gray-200">
+				{editingMeta ? 'Cancel' : 'Edit'}
+			</button>
+		</div>
+		{#if data.sale.status === 'voided' && data.sale.voidReason}
+			<div class="mt-3 rounded-md border border-red-200 bg-red-50 p-3 text-sm dark:border-red-700 dark:bg-red-900/20">
+				<span class="font-medium text-red-700 dark:text-red-300">Voided:</span>
+				<span class="text-red-600 dark:text-red-400">{data.sale.voidReason}</span>
+			</div>
+		{/if}
+	</header>
+
+	{#if form?.error}
+		<div class="rounded-md bg-red-50 p-3 text-sm text-red-700 dark:bg-red-900/30 dark:text-red-300">{form.error}</div>
+	{/if}
+
+	{#if editingMeta}
+		<form method="POST" action="?/updateSale"
+			use:enhance={() => async ({ result, update }) => {
+				await update({ reset: false });
+				if (result.type === 'success') editingMeta = false;
+			}}
+			class="grid grid-cols-1 gap-3 rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800 md:grid-cols-2">
+			<div class="md:col-span-2">
+				<label for="s-title" class={labelCls}>Title</label>
+				<input id="s-title" name="title" type="text" required value={data.sale.title} class={inputCls} />
+			</div>
+			<div>
+				<label for="s-date" class={labelCls}>Date</label>
+				<input id="s-date" name="saleDate" type="date" required value={data.sale.saleDate} class={inputCls} />
+			</div>
+			<div>
+				<label for="s-wht" class={labelCls}>Withholding %</label>
+				<input id="s-wht" name="withholdingTaxRate" type="number" step="0.01" min="0" max="100"
+					value={(Number(data.sale.withholdingTaxRate) * 100).toString()} class={inputCls} />
+			</div>
+			<div>
+				<label for="s-project" class={labelCls}>Project</label>
+				<select id="s-project" name="projectId" value={data.sale.projectId ?? ''} class={inputCls}>
+					<option value="">—</option>
+					{#each data.projects as p (p.id)}
+						<option value={p.id}>{p.name}</option>
+					{/each}
+				</select>
+			</div>
+			<div>
+				<label for="s-party" class={labelCls}>Customer</label>
+				<select id="s-party" name="partyId" value={data.sale.partyId ?? ''} class={inputCls}>
+					<option value="">—</option>
+					{#each data.parties as p (p.id)}
+						<option value={p.id}>{p.name}</option>
+					{/each}
+				</select>
+			</div>
+			<div>
+				<label for="s-invoice" class={labelCls}>Outgoing Invoice</label>
+				<select id="s-invoice" name="invoiceId" value={data.sale.invoiceId ?? ''} class={inputCls}>
+					<option value="">—</option>
+					{#each data.invoices as inv (inv.id)}
+						<option value={inv.id}>{inv.invoiceNumber}</option>
+					{/each}
+				</select>
+			</div>
+			<div class="md:col-span-2">
+				<label for="s-notes" class={labelCls}>Notes</label>
+				<textarea id="s-notes" name="notes" rows="2" class={inputCls}>{data.sale.notes ?? ''}</textarea>
+			</div>
+			<div class="md:col-span-2 flex justify-end">
+				<button type="submit" class="rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700">Save</button>
+			</div>
+		</form>
+	{/if}
+
+	<!-- Line items -->
+	<section class="rounded-lg border border-gray-200 bg-white dark:border-gray-700 dark:bg-gray-800">
+		<div class="flex items-center justify-between border-b border-gray-100 p-4 dark:border-gray-700">
+			<h2 class="font-semibold text-gray-900 dark:text-white">Line Items</h2>
+			{#if isLive}
+				<button type="button" onclick={() => (showAddItem = !showAddItem)}
+					class="text-sm font-medium text-blue-600 hover:text-blue-700 dark:text-blue-400">
+					{showAddItem ? 'Cancel' : '+ Add item'}
+				</button>
+			{/if}
+		</div>
+
+		{#if showAddItem && isLive}
+			<form method="POST" action="?/addLineItem"
+				use:enhance={() => async ({ result, update, formElement }) => {
+					await update({ reset: false });
+					if (result.type === 'success') { showAddItem = false; formElement.reset(); }
+				}}
+				class="grid grid-cols-1 gap-3 border-b border-gray-100 bg-gray-50 p-4 dark:border-gray-700 dark:bg-gray-700/30 md:grid-cols-4">
+				<div class="md:col-span-2">
+					<label class={labelCls} for="li-product">Product</label>
+					<input id="li-product" name="productName" type="text" required class={inputCls} />
+				</div>
+				<div>
+					<label class={labelCls} for="li-qty">Quantity</label>
+					<input id="li-qty" name="quantity" type="number" step="0.0001" min="0.0001" required value="1" class={inputCls} />
+				</div>
+				<div>
+					<label class={labelCls} for="li-price">Unit Price</label>
+					<input id="li-price" name="unitPrice" type="number" step="0.01" min="0" required class={inputCls} />
+				</div>
+				<div>
+					<label class={labelCls} for="li-tax">Tax %</label>
+					<input id="li-tax" name="taxRate" type="number" step="0.01" min="0" max="100" value="7" class={inputCls} />
+				</div>
+				<div class="md:col-span-3">
+					<label class={labelCls} for="li-desc">Description</label>
+					<input id="li-desc" name="description" type="text" class={inputCls} />
+				</div>
+				<div class="md:col-span-4 flex justify-end">
+					<button type="submit" class="rounded-md bg-blue-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-blue-700">
+						Add
+					</button>
+				</div>
+			</form>
+		{/if}
+
+		{#if data.lineItems.length === 0}
+			<p class="p-4 text-sm text-gray-500 dark:text-gray-400">No line items yet.</p>
+		{:else}
+			<table class="min-w-full divide-y divide-gray-200 text-sm dark:divide-gray-700">
+				<thead class="bg-gray-50 dark:bg-gray-700/50">
+					<tr>
+						<th class="px-4 py-2 text-left font-semibold text-gray-700 dark:text-gray-300">Product</th>
+						<th class="px-4 py-2 text-right font-semibold text-gray-700 dark:text-gray-300">Qty</th>
+						<th class="px-4 py-2 text-right font-semibold text-gray-700 dark:text-gray-300">Unit</th>
+						<th class="px-4 py-2 text-right font-semibold text-gray-700 dark:text-gray-300">Tax %</th>
+						<th class="px-4 py-2 text-right font-semibold text-gray-700 dark:text-gray-300">Line Total</th>
+						<th></th>
+					</tr>
+				</thead>
+				<tbody class="divide-y divide-gray-200 dark:divide-gray-700">
+					{#each data.lineItems as li (li.id)}
+						{@const lineNet = Number(li.quantity) * Number(li.unitPrice)}
+						{@const lineGross = lineNet * (1 + Number(li.taxRate))}
+						<tr>
+							<td class="px-4 py-2">
+								<div class="font-medium text-gray-900 dark:text-white">{li.productName}</div>
+								{#if li.description}<div class="text-xs text-gray-500">{li.description}</div>{/if}
+							</td>
+							<td class="px-4 py-2 text-right text-gray-700 dark:text-gray-300">{Number(li.quantity)}</td>
+							<td class="px-4 py-2 text-right text-gray-700 dark:text-gray-300">{formatCurrency(li.unitPrice, data.sale.currency)}</td>
+							<td class="px-4 py-2 text-right text-gray-700 dark:text-gray-300">{(Number(li.taxRate) * 100).toFixed(1)}%</td>
+							<td class="px-4 py-2 text-right font-medium text-gray-900 dark:text-white">{formatCurrency(lineGross.toFixed(2), data.sale.currency)}</td>
+							<td class="px-4 py-2 text-right">
+								{#if isLive}
+									<form method="POST" action="?/removeLineItem" use:enhance={() => async ({ update }) => await update({ reset: false })}>
+										<input type="hidden" name="itemId" value={li.id} />
+										<button type="submit" class="text-xs text-red-600 hover:text-red-700 dark:text-red-400">Remove</button>
+									</form>
+								{/if}
+							</td>
+						</tr>
+					{/each}
+				</tbody>
+				<tfoot class="bg-gray-50 dark:bg-gray-700/50">
+					<tr class="text-sm">
+						<td colspan="4" class="px-4 py-2 text-right font-medium text-gray-700 dark:text-gray-300">Subtotal</td>
+						<td class="px-4 py-2 text-right text-gray-900 dark:text-white">{formatCurrency(totals.subtotal.toFixed(2), data.sale.currency)}</td>
+						<td></td>
+					</tr>
+					<tr class="text-sm">
+						<td colspan="4" class="px-4 py-2 text-right font-medium text-gray-700 dark:text-gray-300">Tax</td>
+						<td class="px-4 py-2 text-right text-gray-900 dark:text-white">{formatCurrency(totals.tax.toFixed(2), data.sale.currency)}</td>
+						<td></td>
+					</tr>
+					<tr class="text-sm">
+						<td colspan="4" class="px-4 py-2 text-right font-medium text-gray-700 dark:text-gray-300">Gross</td>
+						<td class="px-4 py-2 text-right font-semibold text-gray-900 dark:text-white">{formatCurrency(totals.gross.toFixed(2), data.sale.currency)}</td>
+						<td></td>
+					</tr>
+					{#if Number(data.sale.withholdingTaxRate) > 0}
+						<tr class="text-sm">
+							<td colspan="4" class="px-4 py-2 text-right font-medium text-red-600 dark:text-red-400">
+								Withholding ({(Number(data.sale.withholdingTaxRate) * 100).toFixed(2)}%)
+							</td>
+							<td class="px-4 py-2 text-right text-red-600 dark:text-red-400">
+								-{formatCurrency(totals.withholding.toFixed(2), data.sale.currency)}
+							</td>
+							<td></td>
+						</tr>
+						<tr class="text-sm">
+							<td colspan="4" class="px-4 py-2 text-right font-bold text-gray-900 dark:text-white">Net Receivable</td>
+							<td class="px-4 py-2 text-right font-bold text-green-600 dark:text-green-400">
+								{formatCurrency(totals.net.toFixed(2), data.sale.currency)}
+							</td>
+							<td></td>
+						</tr>
+					{/if}
+				</tfoot>
+			</table>
+		{/if}
+	</section>
+
+	<!-- Packages -->
+	<section class="rounded-lg border border-gray-200 bg-white p-4 dark:border-gray-700 dark:bg-gray-800">
+		<h2 class="mb-3 font-semibold text-gray-900 dark:text-white">Linked Packages</h2>
+		{#if data.linkedPackages.length > 0}
+			<div class="mb-3 flex flex-wrap gap-2">
+				{#each data.linkedPackages as pkg (pkg.packageId)}
+					<span class="inline-flex items-center gap-2 rounded-full bg-cyan-100 px-3 py-1 text-xs font-medium text-cyan-700 dark:bg-cyan-900/40 dark:text-cyan-300">
+						📦 {pkg.trackingNumber} ({pkg.carrier})
+						{#if isLive}
+							<form method="POST" action="?/unlinkPackage" use:enhance={() => async ({ update }) => await update({ reset: false })}>
+								<input type="hidden" name="packageId" value={pkg.packageId} />
+								<button type="submit" class="text-cyan-800 hover:text-red-600 dark:text-cyan-200">×</button>
+							</form>
+						{/if}
+					</span>
+				{/each}
+			</div>
+		{/if}
+		{#if isLive && data.availablePackages.length > 0}
+			<form method="POST" action="?/linkPackage" use:enhance class="flex items-center gap-2 text-sm">
+				<select name="packageId" required class={inputCls + ' flex-1'}>
+					<option value="" disabled selected>Select package to link</option>
+					{#each data.availablePackages as pkg (pkg.id)}
+						{#if !data.linkedPackages.find((l) => l.packageId === pkg.id)}
+							<option value={pkg.id}>{pkg.trackingNumber} — {pkg.carrier} ({pkg.direction})</option>
+						{/if}
+					{/each}
+				</select>
+				<button type="submit" class="rounded-md bg-blue-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-blue-700">
+					Link
+				</button>
+			</form>
+		{/if}
+	</section>
+
+	<!-- Actions -->
+	{#if isLive}
+		<div class="flex gap-3">
+			<form method="POST" action="?/confirmSale" use:enhance>
+				<button type="submit" class="rounded-md bg-green-600 px-4 py-2 text-sm font-medium text-white hover:bg-green-700">
+					Confirm Sale
+				</button>
+			</form>
+			<button type="button" onclick={() => (showVoidForm = !showVoidForm)}
+				class="rounded-md border border-red-300 px-4 py-2 text-sm font-medium text-red-600 hover:bg-red-50 dark:border-red-700 dark:text-red-400 dark:hover:bg-red-900/20">
+				Void Sale
+			</button>
+		</div>
+	{/if}
+
+	{#if data.sale.status === 'confirmed'}
+		<div class="flex">
+			<button type="button" onclick={() => (showVoidForm = !showVoidForm)}
+				class="rounded-md border border-red-300 px-4 py-2 text-sm font-medium text-red-600 hover:bg-red-50 dark:border-red-700 dark:text-red-400 dark:hover:bg-red-900/20">
+				Void Sale
+			</button>
+		</div>
+	{/if}
+
+	{#if showVoidForm}
+		<form method="POST" action="?/voidSale"
+			use:enhance={() => async ({ update }) => { await update({ reset: false }); showVoidForm = false; }}
+			class="rounded-md border border-red-200 bg-red-50 p-4 dark:border-red-700 dark:bg-red-900/20">
+			<label for="void-reason" class={labelCls}>Void Reason <span class="text-red-500">*</span></label>
+			<textarea id="void-reason" name="reason" rows="2" required class={inputCls}></textarea>
+			<div class="mt-2 flex justify-end gap-2">
+				<button type="button" onclick={() => (showVoidForm = false)}
+					class="rounded-md border border-gray-300 px-3 py-1.5 text-sm font-medium text-gray-700 dark:border-gray-600 dark:text-gray-200">Cancel</button>
+				<button type="submit" class="rounded-md bg-red-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-red-700">Confirm Void</button>
+			</div>
+		</form>
+	{/if}
+</div>

src/routes/+layout.svelte

@@ -1,7 +1,35 @@
 <script lang="ts">
 	import '../app.css';
+	import { onMount } from 'svelte';
 
 	let { children } = $props();
+
+	// Constrain date inputs so browsers don't render yyyyyy-mm-dd.
+	// Uses a MutationObserver so dynamically-rendered inputs get constrained too.
+	function constrainEl(el: Element) {
+		if (!(el instanceof HTMLInputElement)) return;
+		if (el.type !== 'date') return;
+		if (!el.hasAttribute('min')) el.setAttribute('min', '1900-01-01');
+		if (!el.hasAttribute('max')) el.setAttribute('max', '2100-12-31');
+	}
+	function constrainRoot(root: ParentNode) {
+		root.querySelectorAll<HTMLInputElement>('input[type="date"]').forEach(constrainEl);
+	}
+
+	onMount(() => {
+		constrainRoot(document);
+		const observer = new MutationObserver((mutations) => {
+			for (const m of mutations) {
+				for (const node of m.addedNodes) {
+					if (node.nodeType !== 1) continue;
+					constrainEl(node as Element);
+					if ((node as Element).querySelectorAll) constrainRoot(node as Element);
+				}
+			}
+		});
+		observer.observe(document.body, { childList: true, subtree: true });
+		return () => observer.disconnect();
+	});
 </script>
 
 {@render children()}