feat: rewrite portfolio cards for recruiter-scannable impact

- Reorder projects: Poimen Orchestration → Memory → Homelab → RBC → AWS
- Add Poimen (Ποιμήν) timeline card with Graph-RAG + Temporal pillars
- Rewrite all 6 timeline cards: bold frameworks, quantified impact, emoji sections
- Update Homelab card: production-grade framing, milestone-driven bullets
- Fix CI status links: update API allowlist for riotpiao-poimen org repos
- Fix commit SHA: Dockerfile NEXT_PUBLIC_COMMIT_SHA + CI --build-arg
- Connect Poimen Memory card as 'the memory layer behind Poimen'

.gitea/workflows/build-push.yml

@@ -53,6 +53,7 @@ jobs:
       - name: Build Docker image
         run: |
           docker build --no-cache \
+            --build-arg COMMIT_SHA=${{ steps.sha.outputs.short_sha }} \
             -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
             -t "${IMAGE}:latest" .