Remove Workspace Stripe fields

[BrewingCoder]

Parent: #25 — Remove all SaaS billing code

Depends on: #28 (pricing removal — some of these fields are read by pricing code)

What to Remove from Workspace struct

Field	Line	Type
StripeCustomerID	271	*string
StripeSessionOveragePriceID	294	*string
StripeErrorOveragePriceID	295	*string
StripeLogOveragePriceID	296	*string
StripeTracesOveragePriceID	297	*string
StripeMetricsOveragePriceID	298	*string

Callers

File	Line	Usage
private-graph/graph/schema.resolvers.go	4803-4804	StripeCustomerID null check + return
private-graph/graph/schema.resolvers.go	4824	StripeCustomerID assignment in mutation
private-graph/graph/resolver.go	520-524	All 5 overage price IDs mapped to response
private-graph/graph/resolver.go	522	StripeSessionOveragePriceID

Migration Required

• Add DB migration to drop 6 columns from workspaces table

Test Plan

• Remove fields from struct
• Update resolvers (return empty/nil)
• Update GraphQL schema if these fields are exposed
• Add column-drop migration
• Verify build + tests

🤖 Generated with Claude Code

[github-actions]

AI Triage: Remove Stripe billing fields from Workspace struct and database as part of SaaS billing code removal.

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