feat(waves): wave archive pages - /waves + /waves/:number (#74)

[IsaacMsheliaSamuel]

Summary

Closes #74.

Adds a public wave archive so past contributor work is discoverable and acts as a recruiting tool for future waves.

What's included

New routes

• /waves — listing page with all waves, aggregate stats (total budget paid, PRs merged, unique contributors), and wave cards
• /waves/:number — per-wave detail page with goals, highlights, contributor list (opt-in handles only), and an open-issues CTA for the active wave

Data

• src/data/waves/wave-1.json through wave-6.json — backfilled from Drips + GitHub history
• src/data/waves/wave-7.json — open wave, auto-shows with an issues CTA once goals are set
• src/data/waves/index.ts — typed exports (Wave, WaveContributor, WaveStatus, waves[])

Nav

• Added Waves link to Header desktop nav and mobile menu (both EN + ES)

i18n

• Full waves.* translation keys added to en.json and es.json

Acceptance checklist

• Waves 1–6 backfilled (goals, budget, contributors, PRs merged, highlights)
• Wave 7 auto-shows once issues are open (status: open, issues URL wired to CTA)
• Contributor names honored per opt-in (optedIn: true in JSON = shown, false = counted but anonymous)
• /waves lists all waves
• /waves/:number per-wave detail route

Testing

pnpm build   # verify no TS/compile errors
pnpm dev     # navigate to /waves and /waves/1 through /waves/7

[vercel]

@IsaacMsheliaSamuel is attempting to deploy a commit to the truthixify's projects Team on Vercel.

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[drips-wave]

@IsaacMsheliaSamuel Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits

[github-actions]

Auto-retargeted this PR from main to develop. Wave PRs merge into develop; main is only for release cuts. If you meant to target main deliberately (rare), reply here and we can revert this.