feat(web): add public leaderboard provider race endpoint

[pedroheyerdahl]

Summary

Adds a public Snowflake-backed endpoint GET /api/public/leaderboard-provider-race that serves weekly token volume per model lab for the kilo.ai/leaderboard/race visualization. The race page currently hardcodes 53 weeks of data in the landing repo; this endpoint lets it load dynamically.

The query groups kilo_dw.dbt_prod.usage_daily at week × model_provider_company × is_open_weights (fixed start 2025-07-01 → most recent complete day). One payload drives both the per-lab race and an open-weight vs proprietary toggle. The lab mapping (model_provider_company, is_open_weights) comes from the dbt model_dim seed rather than being re-derived in SQL — this is the same gap the Omni dashboard's CASE workaround was papering over.

Follows the existing createPublicSnowflakeReport pattern (Redis-cached 1h, CORS, Sentry) used by leaderboard-model-usage and leaderboard-model-provider-usage.

Verification

• oxlint clean on both changed files (0 errors)
• Route is a structural copy of the adjacent leaderboard-model-usage/route.ts; tsgo reports no errors on the new files (full-repo typecheck blocked locally by unbuilt workspace packages — pre-existing, unrelated)
• Manual: hit the endpoint on a preview deployment once the dbt backfill has landed (see dependency below)

Visual Changes

N/A

Reviewer Notes

• Deploy dependency: the query reads usage_daily.is_open_weights, added by kilocode-dbt PR feat(kiloclaw): controller, device pairing, and dashboard redesign #480 + its backfill (2026-07-25-backfill-is-open-weights.sql). That backfill must run before this endpoint returns data; until then the query errors and the endpoint returns 502 (cached null).
• Response shape: [{ weekStart: "YYYY-MM-DD", provider: string, isOpenWeights: boolean | null, tokens: number }]. isOpenWeights is null for unmapped models (is_open_weights NULL in model_dim) so the client can distinguish "unknown" from a confirmed closed-weight lab; only explicit 'true'/'false' become a boolean. is_open_weights is per-model in dbt, so a lab like Alibaba appears in both open and closed rows; the client sums across isOpenWeights for the lab race and across provider for the open/closed view.
• model_provider_company = 'other' (unmapped models) is included so the client can bucket it; drop here if we'd rather exclude upstream.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

Full review of the current head (the branch's commit SHAs were rewritten since the prior review, so the previous incremental-diff base commit no longer exists in history); the public leaderboard provider race endpoint correctly maps unmapped/NULL is_open_weights values to null rather than coercing to false, and no new issues were found.

Files Reviewed (2 files)

• apps/web/src/app/api/public/leaderboard-provider-race/route.ts - previously flagged NULL-coercion issue remains resolved; no new issues
• apps/web/src/lib/redis-keys.ts - no issues

Previous Review Summaries (3 snapshots, latest commit aa9aee5)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit aa9aee5)

Status: No Issues Found | Recommendation: Merge

Executive Summary

The previously flagged NULL-coercion issue in the provider race endpoint is now resolved by mapping unmapped is_open_weights values to null instead of false.

Files Reviewed (1 file changed since last review)

• apps/web/src/app/api/public/leaderboard-provider-race/route.ts - previous WARNING resolved (parseOpenWeights now returns null for unmapped/NULL values instead of coercing to false); no new issues

Previous review (commit 3431d73)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
apps/web/src/app/api/public/leaderboard-provider-race/route.ts	54	is_open_weights NULL (e.g. unmapped model_provider_company = 'other' rows) is silently coerced to false instead of being validated or flagged

Files Reviewed (1 file changed since last review)

• apps/web/src/app/api/public/leaderboard-provider-race/route.ts - query updated to exclude the partial current week; no new issues

Fix these issues in Kilo Cloud

Previous review (commit e1a74e2)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
apps/web/src/app/api/public/leaderboard-provider-race/route.ts	53	is_open_weights NULL (e.g. unmapped model_provider_company = 'other' rows) is silently coerced to false instead of being validated or flagged

Files Reviewed (2 files)

• apps/web/src/app/api/public/leaderboard-provider-race/route.ts - 1 issue
• apps/web/src/lib/redis-keys.ts - 0 issues

Fix these issues in Kilo Cloud

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_{Reviewed by claude-sonnet-5 · Input: 32 · Output: 8K · Cached: 735.4K}

_{Review guidance: REVIEW.md from base branch main}