fix(ui): gateway-wide totals on /apps and /enterprise

[smakosh]

Summary

The /apps headline stats and /enterprise hero stats were showing dramatically smaller numbers than the admin Global Stats widget (e.g. 7.51B vs 127B tokens). Two reasons:

1. The /public/apps endpoint excludes source = 'unknown' (untagged traffic, the vast majority of requests), and
2. Headline totals were computed by summing the truncated leaderboard array (apps.reduce(...)), capped at limit=200.

This PR keeps the leaderboard scoped to known apps but makes the headline numbers reflect gateway-wide all-time traffic, matching admin.

Changes

• apps/api/src/routes/public-apps.ts: split into two queries — leaderboard rows (excludes unknown, capped by limit) + a separate aggregate over all globalSourceStats rows for totalTokens / totalRequests. totalApps is now COUNT(DISTINCT source) FILTER (source <> 'unknown'), no longer capped by limit.
• apps/ui/src/components/enterprise/hero.tsx: hero now accepts optional totalTokens / totalRequests props and converts them to ticker-friendly value+suffix. "Daily Tokens" and "Customer Savings" stay hardcoded.
• apps/ui/src/app/enterprise/page.tsx: server-fetches /public/apps (with limit=1, since it only consumes the totals) and passes them into the hero. revalidate = 300.

Test plan

• Visit /apps — "tokens processed" and "requests routed" should match admin Global Stats; leaderboard list still excludes unknown.
• Visit /enterprise — hero "Total Tokens Processed" and "Total Requests" stat cards reflect live gateway totals (with hardcoded fallback if fetch fails).
• pnpm build passes.

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features
  • Enterprise page now displays live usage statistics including total tokens processed and total requests based on actual application data.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 4a65275e-c351-4583-bbf0-9b3b3f40e783

📥 Commits

Reviewing files that changed from the base of the PR and between 2d9c902 and e1064a4.

📒 Files selected for processing (3)

• apps/api/src/routes/public-apps.ts
• apps/ui/src/app/enterprise/page.tsx
• apps/ui/src/components/enterprise/hero.tsx

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Walkthrough

The PR refactors the public apps API to fetch aggregate totals via parallel queries and return precomputed summaries. The Enterprise page is converted to async to server-side fetch these totals with ISR caching, then passes them to the Hero component, which formats and displays them as ticker statistics using a new helper function.

Changes

Enterprise Stats Server-Side Integration

Layer / File(s)	Summary
API Aggregate Totals apps/api/src/routes/public-apps.ts	GET / endpoint now executes two queries in parallel: one fetches per-source usage rows filtered, grouped, and ordered by token count with limit applied; another fetches overall totals (distinct app count excluding unknown, summed tokens, summed requests). Response uses precomputed totalApps, totalTokens, totalRequests instead of deriving totals from the apps array.
Server-Side Fetch & ISR apps/ui/src/app/enterprise/page.tsx	EnterprisePage is converted to async, exports revalidate = 300 for incremental static regeneration, and defines internal PublicAppsResponse type. Calls fetchServerData("GET", "/public/apps", { limit: "1" }) server-side and passes stats?.totalTokens and stats?.totalRequests as props to HeroEnterprise.
Hero Component Stats Display apps/ui/src/components/enterprise/hero.tsx	HeroEnterprise now accepts optional totalTokens and totalRequests props via new HeroEnterpriseProps interface. Introduces toTickerStat helper to convert numeric values into formatted { value, suffix } pairs (billions, millions, thousands, or raw). StatCard entries for "Total Tokens Processed" and "Total Requests" are updated to display computed stats instead of hardcoded values.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• theopenco/llmgateway#2170: Adds the /public/apps endpoint with per-source aggregation; this PR refactors the endpoint to compute and return separate aggregate totals and updates UI consumers to use them.

Suggested reviewers

• steebchen-bot

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and specifically identifies the main change: fixing gateway-wide totals display on the /apps and /enterprise pages, which is the core objective of this PR.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

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🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/public-stats-gateway-wide

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