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Crussell/.env.example
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popertots e9b0f0f2a7 fix: review-loop hardening — identical-body replay, 2FA gates, webhook at-least-once, GDPR scrub
Follow-up to the comprehensive payment-system review. Fixes the issues the
review found in the initial integration, plus the rough edges it introduced.

Money-safety:
- Replay-by-key now replays the FULL original request verbatim from a stored
  square_request_snapshot, so a retained idempotency key returns the original
  payment instead of IDEMPOTENCY_KEY_REUSED (previously the row sat pending
  forever). IDEMPOTENCY_KEY_REUSED remains ambiguous (never proof of no charge).
- Dev mock mirrors real Square for unknown-key replays: ccof: saved-card
  sources are charged and rescued; spent cnon: nonces surface
  ErrReplayKeyNotRetained. (Fixes dev/prod parity divergence.)
- Webhook dedup row committed AFTER dispatch (at-least-once); FAILED till sales
  claw back gift-card funding; event-type strings match Square's real catalog.
- Expired-gift-card cancellation refunds set creditFailed (never a phantom
  'completed' refund); cancellation refunds lock all payment rows ascending.
- Sweep never rescue-completes a gift-card purchase without delivering the card.
- Tip no-client-key fallback is a deterministic count-based key under the
  booking advisory lock (retry-safe, distinct tips don't collapse).
- M-cap subtracts completed refunds, clamped to [0, total].

2FA (PSD2 SCA stand-in) for online saved-card payments:
- Full feature: status/setup/verify/disable endpoints, gating helper wired into
  all 7 saved-card charge paths (incl. BuyGiftCard + admin saved-card), account
  admin-tab settings UI, frontend gating across all payment surfaces.
- Enforcement is FAIL-CLOSED: on unless REQUIRE_2FA=false or an explicit
  mock/dev SQUARE_ENVIRONMENT; startup warning when off in a non-dev env.
- Verify is brute-force hardened (5-attempt lockout, timing-safe compare);
  plaintext codes only logged when enforcement is off (dev).
- GDPR: anonymize_user also scrubs 2FA columns and staff notes.

Infra/docs:
- nginx: /api/ response cache removed (cross-user disclosure); port 80
  redirects to HTTPS (localhost/RFC1918 exempt, end-anchored regexes); HSTS;
  separate webhook rate-limit zone.
- Schema: users 2FA columns; payments/till_sales square_source_id +
  square_request_snapshot.
- Legal docs: gift-card cooling-off, international-transfers section, tips
  policy; Gap Backlog P3 webhooks marked done; stale counts/wording corrected.
- Flaky test race fixed (t.Parallel + global mock mutation); suite 26/26
  packages green, 2,142 tests, svelte-check clean.
2026-08-22 00:34:49 +01:00

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# Database Credentials for all services
# These are used by the 'postgres' service to initialize the database
# These are used by 'backend' (Go) and 'sabredav' (PHP)
POSTGRES_USER=myuser
POSTGRES_PASSWORD=mypassword
POSTGRES_DB=mydb
# and to connect to the 'postgres' service on the Docker network
POSTGRES_HOST=postgres
POSTGRES_PORT=5432
JWT_SECRET_KEY="a-very-secret-key-that-should-be-in-env"
# S3/R2 Configuration (for image storage)
# Dev: Uses local Rustfs container (see compose.yml)
# Prod: Use Cloudflare R2 credentials
S3_ENDPOINT=http://localhost:9000
S3_PUBLIC_URL=http://192.168.1.135:9000
S3_ACCESS_KEY=rustfsadmin
S3_SECRET_KEY=rustfsadmin
S3_BUCKET=crussell
S3_PROFILE_PICS_BUCKET=crussell-profile-pics
AWS_REGION=eu-west-2
# Set DAV_SKIP_INIT=1 to skip CardDAV server initialization (e.g., in CI/test environments).
DAV_SKIP_INIT=1
# Prod only: Cloudflare R2 (overrides S3_* vars in non-dev builds).
# Local dev uses the S3_* vars above (from .env). Not needed for local builds.
R2_ENDPOINT=
# Required for production object storage — the prod S3 client (backend/internal/s3/s3.go,
# via getEnv) reads all four below; not needed for local dev builds.
R2_ACCESS_KEY=
R2_SECRET_KEY=
R2_BUCKET=crussell
R2_PUBLIC_URL=
# Square Payment Gateway
SQUARE_ACCESS_TOKEN=
SQUARE_LOCATION_ID=
SQUARE_TERMINAL_DEVICE_ID=
SQUARE_ENVIRONMENT=mock
# 2FA (PSD2 SCA stand-in) for online card payments. Enforcement is FAIL-CLOSED:
# ON unless REQUIRE_2FA=false OR SQUARE_ENVIRONMENT explicitly equals one of
# mock/dev/development/test. Empty or unknown SQUARE_ENVIRONMENT values are
# treated as production-enforced (a mistyped env var can never silently disarm
# the gate; the backend logs a startup warning in that case). Set
# REQUIRE_2FA=false only in controlled environments.
REQUIRE_2FA=true
# Webhook config MUST exactly match the Square Dashboard webhook subscription
# (URL + signature key). If SQUARE_WEBHOOK_NOTIFICATION_URL is left unset it
# defaults to http://localhost:8080/webhooks/square, which is fail-closed (503
# without the signing key, 403 on missing/bad signature). Leave both empty if
# you do not use webhooks.
SQUARE_WEBHOOK_SIGNATURE_KEY=
SQUARE_WEBHOOK_NOTIFICATION_URL=
# Frontend (public — safe for the browser). Square Web Payments SDK:
# VITE_SQUARE_APPLICATION_ID — client-side application ID (sandbox IDs start with "sandbox-")
# VITE_SQUARE_LOCATION_ID — Square location ID
# VITE_SQUARE_ENVIRONMENT — 'mock' | 'sandbox' | 'production'. Local dev: 'mock' renders the
# frontend's built-in mock card form (tokens only; pairs with
# SQUARE_ENVIRONMENT=mock above). NEVER set 'mock' in production.
VITE_SQUARE_APPLICATION_ID=
VITE_SQUARE_LOCATION_ID=
VITE_SQUARE_ENVIRONMENT=mock
# Test Database (separate from main DB)
# Used by testutils/testdb for running tests without corrupting dev data
TEST_DB_HOST=localhost
TEST_DB_DSN=
# Dev/CI mode — set to "true" to enable mock services
# Disables zxcvbn password checks, skips artificial Square mock delays,
# skips DAV sync, and relaxes production guardrails
GO_TESTING=
# CardDAV (SabreDAV) — profile photo sync
DAV_BASE_URL=http://localhost:8080
DAV_ADMIN_PASSWORD=admin
# Logging
# Set to "true" to disable ANSI color escape sequences in log output
NO_COLOR=
# Frontend
VITE_BACKEND_URL=http://localhost:8080
# Local S3 (Rustfs) — requires GO_TESTING=1 or dev build tag
# These are dev-only overrides used by the dev S3 implementation
RUSTFS_ENDPOINT=http://rustfs:9000
RUSTFS_ACCESS_KEY=rustfsadmin
RUSTFS_SECRET_KEY=rustfsadmin
RUSTFS_BUCKET=crussell