SubSync v1.0.1: exception filter, DTO hardening, dashboard spend fix, API consolidation, test fixes

[Copilot]

Bundles several targeted v1.0.1 improvements across the API and web layers.

API

Global exception filter

Added HttpExceptionFilter (@Catch()) registered in main.ts. All errors now emit a uniform { statusCode, message, error } envelope. Unexpected runtime errors are caught, logged with stack traces via NestJS Logger, and returned as clean 500s.

DTO validation hardening

• CreateSubscriptionDto: @MaxLength on serviceId (100), planName (150), billingCurrency (3), paymentLast4 (4), notes (1,000); paymentSource tightened from @IsString → @IsIn(['card','paypal','gift','other']).
• UpdateSettingsDto: @Max(365) added to previously unbounded leadTimeDays.
• EmailIngestPayload: @MaxLength(50000) on body.

Dashboard spend calculation

canceled_pending subscriptions now excluded from monthlyEquivalentSpend and spendByCategory. These are already canceled and were silently inflating ongoing cost totals.

Web

API layer consolidation

subscription-form.tsx was making raw fetch calls with duplicated base-URL resolution. Added updateSubscription(id, payload) to api.ts and refactored the form to use the typed helpers (createSubscription, updateSubscription, deleteSubscription).

Tests

subscriptions.service.spec.ts had two bugs that prevented the suite from running correctly:

• ServiceCatalogService was missing from the constructor call — would throw TypeError at runtime.
• Entity fixture used billingAmount: new Prisma.Decimal(15) instead of the actual schema field billingAmountCents: 1500.

All 5 unit tests now pass.

Misc

• All packages bumped to 1.0.1.
• docs/release-notes-v1.0.1.md added.

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