Comprehensive UX audit fixes: navigation, feedback, affordances, and accessibility

Address 18 issues across high/medium/low impact tiers identified in a full
interface review. Key changes: Models page decomposed into tabs, confirmation
dialogs for irreversible actions (deploy/open-source/acquire), chart Y-axes
made visible, hash router extended for Market tab persistence, collapsible
sidebar, keyboard navigation shortcuts (g+key chords), notification bulk
actions, achievement progress bars, and ARIA label improvements.

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

apps/web/src/pages/FinancePage.tsx

@@ -77,7 +77,7 @@ export function FinancePage() {
                   </linearGradient>
                 </defs>
                 <XAxis dataKey="tick" hide />
-                <YAxis hide />
+                <YAxis width={50} tickFormatter={(v: number) => formatMoney(v)} tick={{ fontSize: 10, fill: '#64748b' }} axisLine={false} tickLine={false} />
                 <Area type="monotone" dataKey="money" stroke="#6366f1" fill="url(#cashGrad)" />
               </AreaChart>
             </ResponsiveContainer>
@@ -100,7 +100,7 @@ export function FinancePage() {
             <ResponsiveContainer width="100%" height={200}>
               <LineChart data={history}>
                 <XAxis dataKey="tick" hide />
-                <YAxis hide />
+                <YAxis width={50} tickFormatter={(v: number) => formatMoney(v)} tick={{ fontSize: 10, fill: '#64748b' }} axisLine={false} tickLine={false} />
                 <Tooltip
                   contentStyle={{ backgroundColor: '#1e293b', border: '1px solid #334155', borderRadius: '8px' }}
                   formatter={(value: number, name: string) => [formatMoney(value), name === 'revenue' ? 'Revenue' : 'Expenses']}