Remove pricing package and quota checking system

[BrewingCoder]

Parent: #25 — Remove all SaaS billing code

⚠️ Largest blast radius — do this one carefully

What to Remove

• model/pricing.go — PricingProductType, PricingSubscriptionInterval enums
• pricing/pricing.go — entire package (ProductPrices, GetLimitAmount, IncludedAmount, get7DayAverageImpl, getWorkspaceMeterImpl, ProductToBasePriceCents, WorkspaceOverages, ProductTypeToQuotaConfig)
• pricing/pricing_test.go — tests for above
• Quota checking functions in public-graph/graph/resolver.go: IsWithinQuota, SetBillingQuotaExceeded
• Redis billing quota keys in redis/utils.go: BillingQuotaExceededKey, IsBillingQuotaExceeded, SetBillingQuotaExceeded

Callers (100+ references — most complex removal)

Public Graph Resolver

Line	Usage
688	IsWithinQuota — PricingProductTypeErrors
1129, 2631, 2981	IsWithinQuota — PricingProductTypeSessions
1132	SetBillingQuotaExceeded — PricingProductTypeSessions
1618	IsWithinQuota function definition

Private Graph Resolver

Line	Usage
schema.resolvers.go:6420-6476	IncludedAmount, GetLimitAmount, ProductToBasePriceCents calls

Worker

Line	Usage
kafka_worker.go:309, 366-374, 398, 473	getQuotaExceededByProject, product type case statements
worker.go:954	IsWithinQuota call

OTEL

Line	Usage
otel.go:575, 643, 749, 797	getQuotaExceededByProject, product type calls

Redis

Line	Usage
utils.go:56, 604, 608	Billing quota key functions

Tests

File	Usage
public-graph/graph/resolver_test.go:638,641	IsWithinQuota tests
worker/worker_test.go:848-894	Pricing table setup (47 assignments)

Strategy

IsWithinQuota should be replaced with a function that always returns true (no quotas in self-hosted), then callers can be simplified. The pricing package can be deleted entirely.

Test Plan

• Replace IsWithinQuota → always true
• Remove SetBillingQuotaExceeded calls
• Remove pricing package
• Remove Redis billing quota functions
• Remove model/pricing.go
• Update all tests
• Verify build + all tests pass
• Verify data ingestion still works (sessions, errors, logs, traces, metrics all accepted)

🤖 Generated with Claude Code

[github-actions]

AI Triage: Remove SaaS billing and quota checking system from self-hosted HoldFast, affecting 100+ references across resolvers, workers, and Redis utilities.

Labels applied: area:backend, tech-debt, priority:high, billing-removal, component:database