Express Deletion

Express Deletion (MC #10493)

CEO directive: "Express je tvoj bug, brisi" — 2026-05-02
PR: #39
Status: DONE (merged 2026-05-02)
Outcome: 141 api-express files deleted, 415 npm packages deregistered

Context

Bilko had dual backends for 3 months post-Kotlin migration:

apps/api-express/ (12 routes, 9 services, Node.js/TypeScript)
apps/api/ (Kotlin/Ktor, Exposed ORM, Flyway migrations)

Stage environment: Running Kotlin (bilko/api:stage-1f48fdc)
Prod environment: STILL running Express (bilko-api on Cloud Run, digest 2986d8b0..., port 4000)

CEO decision 2026-05-02: Kotlin is canonical. Express is deprecated. Delete immediately.

Actions Taken

Branch created: feat/bilko-kill-express
Directory deleted: rm -rf apps/api-express/
Workspace cleanup: Updated package.json workspaces (removed apps/api-express)
Docs updated:
- CLAUDE.md — removed Express backend description
- BUILD-BLUEPRINT.md — removed Express references
CI verification: turbo.json and cloudbuild.yaml had ZERO Express references (no changes needed)
Cloud Run verification: Stage bilko-api-stage confirmed Kotlin-safe (revision stage-1f48fdc)
Package install test: npm install → exit 0 (no broken workspace refs)

PR Details

URL: https://github.com/johnatbasicas/bilko/pull/39
Commit: 2c63cdb
Files changed: 141 deletions
Packages removed: 415 npm dependencies

Merge: Squash-merged 2026-05-02 08:51:17 UTC

Root Finding: PROD Still on Express

During Cloud Run inventory (MC #10493 verification by kelsey-hightower):

Stage API (bilko-api-stage):

Image: bilko/api:stage-1f48fdc (Kotlin)
Port: 4001
Healthy

Prod API (bilko-api):

Image digest: sha256:2986d8b0... (Express container)
Port: 4000
Still serving Express backend

Implication: Deleting apps/api-express/ from git does NOT affect prod — prod is running a stale container image. Prod cutover requires separate deployment action.

Followup: MC #10502 (PROD CUTOVER) — H priority, BLOCKER for TD-3 per DEPLOY-MAP.md

Side-Effect: Web Dockerfile Broke

Discovered: 2026-05-02 by kelsey-hightower during MC #10494 deploy verification

Root cause: apps/web/Dockerfile contained:

COPY apps/api-express/package.json ./apps/api-express/

This line was used for web build dependency extraction. When PR #39 deleted apps/api-express/, the COPY directive failed:

Step 8/24 : COPY apps/api-express/package.json ./apps/api-express/
ERROR: failed to compute cache key: "/apps/api-express/package.json" not found: not found

Impact: Web Cloud Build pipeline failed for 3 consecutive builds (regression window: PR #39 merge → PR #41 fix)

Fix: PR #41 (MC #10505) — removed single line from apps/web/Dockerfile

Verification

Tested by:

codecraft — codebase integrity (no dangling imports)
kelsey-hightower — Cloud Run service state

Evidence directory: /tmp/evidence-10493/

Smoke tests:

Stage API health: curl https://bilko-api-stage-dh4m46blja-lz.a.run.app/api/v1/health → HTTP 200, Kotlin response shape
Web build: Cloud Build ID b3bbde85 SUCCESS (post-PR #41 fix)
Package install: npm install exit 0, no workspace errors

Docs Cleanup

Files updated in PR #39:

`CLAUDE.md`

Before:

Backend: Express (apps/api-express/) — 12 routes, 9 services
Migration: Kotlin in progress (apps/api/)

After:

Backend: Kotlin/Ktor (apps/api/) — canonical since 2026-05-02

`BUILD-BLUEPRINT.md`

Before:

- Express API (Node.js/TypeScript)
- Kotlin API (migration target)

After:

- Kotlin/Ktor API (canonical)
- Note: Express deleted 2026-05-02 per ADR-021 package rename + CEO directive

Open Items

1. PROD Cutover (MC #10502)

Blocker: TD-3 per DEPLOY-MAP.md
Action required: Deploy Kotlin container to prod bilko-api Cloud Run service
Risk: Prod still on Express means any regression fix in Kotlin (e.g., MC #10494 registracija) does NOT reach prod users
Priority: H

2. Cloud Build API Pipeline

Current state: cloudbuild.yaml deploys web only (no Kotlin API build/deploy)
Risk: Kotlin code changes have no CI gate; manual deploy only
Followup: MC #10498 (Arch roadmap — Kotlin CI pipeline)

References

MCs:

MC #10493 — Express deletion (this page)
MC #10502 — PROD CUTOVER (open, H priority)
MC #10505 — Web Dockerfile regression fix

PRs:

#39 — Express deletion
#41 — Web Dockerfile fix

Evidence:

/tmp/evidence-10493/ — postflight artifacts
DEPLOY-MAP.md — Cloud Run service inventory