build(confidence-engine): add production container packaging

docs/current-project-state.md

@@ -1,5 +1,19 @@
 # Current Project State — Confidence Engine
 
+## v0.62d Production Docker Packaging
+
+- `Dockerfile` created: multi-stage Alpine build (Node 22), Next.js standalone output, configurable port 3000, health-check boundary via `/api/health`
+- `.dockerignore` created: excludes `node_modules`, `.next`, secrets (`env.*.local`), docs, IDE, OS artefacts
+- `next.config.mjs`: added `output: 'standalone'` for lean production container (only config change required)
+- `.env.example`: reorganized; Ollama variables now tracked as deployment-relevant env vars
+- npm production build: PASS ✓
+- Docker image build: blocked — no Docker runtime on development machine (apparatus limitation, not product defect)
+- Production container start / `/api/health` smoke test: pending Docker availability
+- No persistent application volume required
+- Supabase remains external; Ollama remains private and server-reachable
+- Public `NEXT_PUBLIC_*` variables may require build-time injection via `--build-arg` (baked into browser bundle)
+- **No deployment performed**
+
 > Created by Experiment 27. This document is the starting point for any fresh session working on the Confidence Engine. Read this first, then follow the routing table below to task-specific references.
 
 ## 1. What the Confidence Engine Is