feat: full-population Wall-of-Fame tabs (reviewers/issues/PR) + Top-50 cap

[PrestaEdit]

Follow-up to #231. Broadens the reviews/issues/PR leaderboards to the full population instead of only the top of each list.

Summary

• Wall of Fame gains three tabs — Reviewers, Issue reporters, PR authors — listing everyone (committers and non-committers), searchable / sortable / paginated like the existing tabs. New type="ranking" on WallOfFameTable (avatar + name + login, count column, GitHub link, no modal).
• Homepage Top section stays a curated highlight, now capped at 50 per leaderboard (slice(0, 50)); the full lists feed the Wall of Fame from the same app.vue refs.
• Same RankingEntry contract — the data side just emits more entries.

Dependency

Needs the Traces change that emits the full lists with identity resolved at fetch time (no per-user API call): PrestaShop/traces#233. Once released and the scheduled Build & Deploy runs, the tabs populate with real full-population data.

Test Plan

• vitest run — 9/9 green (ranking table, WoF tabs registered, Top-50 cap, empty-hide)
• eslint . — clean
• Visual check once traces#233 is released and data regenerates

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