feat: add Tech Stack/Dependencies Widget (#80)

[jhnavi25]

Closes #80

What changed

lib/widgets.js

• Added renderTechStack(p) function that generates an SVG tech stack display
• Added techs and layout params to normalizeParams
• Added case 'techstack' in renderWidget switch

api/widget.js

• Added techstack cache policy (24h, fully static content)

Features

• Pass techs as comma-separated list: ?type=techstack&techs=react,nodejs,typescript
• Supports grid (3 columns) and list (1 column) layouts via ?layout=grid or ?layout=list
• 24 built-in techs with brand colors: React, Node.js, TypeScript, Python, Docker, PostgreSQL, MongoDB, Redis, Next.js, Tailwind, GraphQL, Rust, Go, Java, Kotlin, Swift, Vue, Angular, MySQL, AWS, Git, Linux, Figma
• Unknown tech names render with a neutral fallback badge
• Respects existing theme param (classic, paper, terminal, retro, ocean, etc.)

Notes

• No breaking changes
• Purely additive — no existing widgets affected

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Project	Deployment	Actions	Updated (UTC)
timeinreadme	Ready	Preview, Comment	Jun 10, 2026 3:32am