refactor: perf improvements + new card features

[NFToby]

What

• Split index.ts into smaller components & services for maintainability
• Reached feature parity with the existing og-cards repo
• Added support for a second metric/card (ie. TVL + fees)
• Added optional 7-day bar charts beneath metrics
• Renamed query params for clarity (breaking change vs v1)

Performance Benchmark

Rendering stack comparison

V2: Bun + Satori
V1: Node + Puppeteer

Request	V2	V1
Avg	157ms	1238ms
Total (10 reqs)	1.57s	12.38s
Speedup	~7.8× faster	baseline

This also reduces cold start time and removes the need for a headless browser.

Screenshots

Standard card
http://localhost:3000/?projectName=Lido&filetype=png&theme=dark&metricName=Total+Value+Locked&metricValue=%2427.336b&diff=4.8%25&projectLogo=https%3A%2F%2Ficons.llamao.fi%2Ficons%2Fprotocols%2Flido%3Fw%3D48%26h%3D48

Standard card with bar chart
http://localhost:3000/?projectName=Lido&filetype=png&theme=dark&metricName=Total+Value+Locked&metricValue=%2427.336b&diff=4.8%25&projectLogo=https%3A%2F%2Ficons.llamao.fi%2Ficons%2Fprotocols%2Flido%3Fw%3D48%26h%3D48&barData=10,2,20,22,18,28,38

Double card
http://localhost:3000/?projectName=Lido&filetype=png&theme=dark&metricName=Total+Value+Locked&metricValue=%2427.336b&diff=4.8%25&projectLogo=https%3A%2F%2Ficons.llamao.fi%2Ficons%2Fprotocols%2Flido%3Fw%3D48%26h%3D48&metricName2=Fees%20(24hr)&metricValue2=$1.98m

Double card with bar charts
http://localhost:3000/?projectName=Lido&filetype=png&theme=dark&metricName=Total+Value+Locked&metricValue=%2427.336b&diff=4.8%25&projectLogo=https%3A%2F%2Ficons.llamao.fi%2Ficons%2Fprotocols%2Flido%3Fw%3D48%26h%3D48&metricName2=Fees%20(24hr)&metricValue2=$1.98m&barData=10,2,20,22,18,28,38&barData2=5,12,8,22,18,28,70

Standard card with different metric (light mode)
http://localhost:3000/?projectName=Lido&filetype=png&theme=light&metricName=Next+Unlock+%7C+%24129%2C745&metricValue=in+6+hours&projectLogo=https%3A%2F%2Ficons.llamao.fi%2Ficons%2Fprotocols%2Flido%3Fw%3D48%26h%3D48

Standard card for homepage
http://localhost:3000/?metricName=Total%20Value%20Locked%20in%20DeFi&metricValue=$119.042b&diff=-1.16%25&projectLogo=https%3A%2F%2Ficons.llamao.fi%2Ficons%2Fprotocols%2Flido%3Fw%3D48%26h%3D48