Expose Forgejo publicly at forge.eblu.me (#278)

## Summary

Expose Forgejo publicly at `forge.eblu.me` via the Fly.io reverse proxy — the first dynamic, authenticated public-facing service.

- **Forgejo hardening:** Domain changed to forge.eblu.me, SSH stays on forge.ops.eblu.me, reverse proxy trust headers configured, local registration locked to external-only (Authentik SSO)
- **Tailscale Ingress:** ExternalName Service + Ingress in tailscale-operator creates forge.tail8d86e.ts.net endpoint
- **Fly.io proxy:** nginx server block with rate-limited auth endpoints (3r/s), fail2ban with custom nginx-deny action, security headers, /swagger blocked, WebSocket support, 512m body limit
- **Authentik:** OAuth callback updated to forge.eblu.me
- **DNS/TLS:** CNAME record in Pulumi, cert in fly-setup
- **Rename:** ~29 files updated from forge.ops.eblu.me to forge.eblu.me (HTTPS refs only; SSH, container builds, and Caddy table kept as-is)

## Deployment Order

1. `mise run provision-indri -- --tags forgejo` (config changes)
2. Verify forge.ops.eblu.me still works
3. `argocd app set tailscale-operator --revision feature/forge-public && argocd app sync tailscale-operator`
4. Verify `curl https://forge.tail8d86e.ts.net`
5. `cd fly && fly deploy`
6. Verify pre-DNS: `curl -H "Host: forge.eblu.me" https://blumeops-proxy.fly.dev/`
7. `fly certs add forge.eblu.me -a blumeops-proxy`
8. `argocd app set authentik --revision feature/forge-public && argocd app sync authentik`
9. `mise run dns-preview && mise run dns-up`
10. Full verification (see below)
11. Rehearse `mise run fly-shutoff`
12. After merge: reset ArgoCD revisions to main, re-sync

## Verification Checklist

- [ ] forge.eblu.me loads, shows public repos
- [ ] forge.ops.eblu.me still works from tailnet
- [ ] SSH clone via forge.ops.eblu.me:2222 works
- [ ] HTTPS clone via forge.eblu.me works
- [ ] UI shows forge.eblu.me for HTTPS clone, forge.ops.eblu.me for SSH
- [ ] /swagger returns 403
- [ ] Rapid login attempts trigger 429 rate limit
- [ ] fail2ban bans after 5 failed logins in 10 minutes
- [ ] ArgoCD can still sync (SSH unaffected)
- [ ] `mise run fly-shutoff` stops all public traffic
- [ ] `mise run services-check` passes

Reviewed-on: #278

.forgejo/workflows/build-blumeops.yaml

@@ -11,7 +11,7 @@
 #   3. The workflow creates a release with attached artifacts
 #
 # Documentation asset URL:
-#   https://forge.ops.eblu.me/eblume/blumeops/releases/download/<tag>/docs-<version>.tar.gz
+#   https://forge.eblu.me/eblume/blumeops/releases/download/<tag>/docs-<version>.tar.gz
 
 name: Build BlumeOps
 
@@ -46,7 +46,7 @@ jobs:
 
           # Fetch latest release
           echo "Fetching latest release..."
-          LATEST=$(curl -s "https://forge.ops.eblu.me/api/v1/repos/eblume/blumeops/releases/latest" | jq -r '.tag_name // empty' || true)
+          LATEST=$(curl -s "https://forge.eblu.me/api/v1/repos/eblume/blumeops/releases/latest" | jq -r '.tag_name // empty' || true)
 
           if [ -z "$LATEST" ]; then
             LATEST="v0.0.0"
@@ -94,9 +94,9 @@ jobs:
           esac
 
           # Check if this version already exists
-          if curl -sf "https://forge.ops.eblu.me/api/v1/repos/eblume/blumeops/releases/tags/$VERSION" > /dev/null 2>&1; then
+          if curl -sf "https://forge.eblu.me/api/v1/repos/eblume/blumeops/releases/tags/$VERSION" > /dev/null 2>&1; then
             echo "Error: Release $VERSION already exists"
-            echo "See: https://forge.ops.eblu.me/eblume/blumeops/releases/tag/$VERSION"
+            echo "See: https://forge.eblu.me/eblume/blumeops/releases/tag/$VERSION"
             exit 1
           fi
 
@@ -181,7 +181,7 @@ jobs:
             echo "Download \`$TARBALL\` and configure the quartz container with:"
             echo ""
             echo "\`\`\`"
-            echo "DOCS_RELEASE_URL=https://forge.ops.eblu.me/eblume/blumeops/releases/download/$VERSION/$TARBALL"
+            echo "DOCS_RELEASE_URL=https://forge.eblu.me/eblume/blumeops/releases/download/$VERSION/$TARBALL"
             echo "\`\`\`"
           } > /tmp/release_body.txt
 
@@ -197,7 +197,7 @@ jobs:
             -H "Content-Type: application/json" \
             -H "Authorization: token $GITHUB_TOKEN" \
             -d "$RELEASE_DATA" \
-            "https://forge.ops.eblu.me/api/v1/repos/eblume/blumeops/releases")
+            "https://forge.eblu.me/api/v1/repos/eblume/blumeops/releases")
 
           echo "API Response: $RELEASE_RESPONSE"
 
@@ -217,7 +217,7 @@ jobs:
             -H "Content-Type: application/gzip" \
             -H "Authorization: token $GITHUB_TOKEN" \
             --data-binary "@$TARBALL" \
-            "https://forge.ops.eblu.me/api/v1/repos/eblume/blumeops/releases/$RELEASE_ID/assets?name=$TARBALL")
+            "https://forge.eblu.me/api/v1/repos/eblume/blumeops/releases/$RELEASE_ID/assets?name=$TARBALL")
 
           echo "Upload Response: $UPLOAD_RESPONSE"
           echo ""
@@ -228,7 +228,7 @@ jobs:
           VERSION="${{ steps.version.outputs.version }}"
           TARBALL="docs-${VERSION}.tar.gz"
           DEPLOYMENT_FILE="argocd/manifests/docs/deployment.yaml"
-          RELEASE_URL="https://forge.ops.eblu.me/eblume/blumeops/releases/download/${VERSION}/${TARBALL}"
+          RELEASE_URL="https://forge.eblu.me/eblume/blumeops/releases/download/${VERSION}/${TARBALL}"
 
           echo "Updating $DEPLOYMENT_FILE with new release URL..."
           yq -i "(.spec.template.spec.containers[0].env[] | select(.name == \"DOCS_RELEASE_URL\")).value = \"${RELEASE_URL}\"" "$DEPLOYMENT_FILE"
@@ -307,7 +307,7 @@ jobs:
           echo "================================================"
           echo ""
           echo "Release URL:"
-          echo "  https://forge.ops.eblu.me/eblume/blumeops/releases/tag/$VERSION"
+          echo "  https://forge.eblu.me/eblume/blumeops/releases/tag/$VERSION"
           echo ""
           echo "Asset URL (for DOCS_RELEASE_URL ConfigMap):"
-          echo "  https://forge.ops.eblu.me/eblume/blumeops/releases/download/$VERSION/$TARBALL"
+          echo "  https://forge.eblu.me/eblume/blumeops/releases/download/$VERSION/$TARBALL"

.forgejo/workflows/cv-deploy.yaml

@@ -30,7 +30,7 @@ jobs:
 
           if [ "$INPUT_VERSION" = "latest" ]; then
             echo "Resolving latest CV package version..."
-            VERSION=$(curl -s "https://forge.ops.eblu.me/api/v1/packages/eblume?type=generic&q=cv" \
+            VERSION=$(curl -s "https://forge.eblu.me/api/v1/packages/eblume?type=generic&q=cv" \
               | jq -r '[.[] | select(.name == "cv")] | sort_by(.version) | last | .version // empty')
 
             if [ -z "$VERSION" ]; then
@@ -48,7 +48,7 @@ jobs:
 
           # Verify the package exists
           TARBALL="cv-${VERSION}.tar.gz"
-          PACKAGE_URL="https://forge.ops.eblu.me/api/packages/eblume/generic/cv/${VERSION}/${TARBALL}"
+          PACKAGE_URL="https://forge.eblu.me/api/packages/eblume/generic/cv/${VERSION}/${TARBALL}"
           if ! curl -fsSL --head "$PACKAGE_URL" > /dev/null 2>&1; then
             echo "Error: Package not found at $PACKAGE_URL"
             echo "Run the 'Release CV' workflow in the cv repo first."
@@ -65,7 +65,7 @@ jobs:
           VERSION="${{ steps.version.outputs.version }}"
           TARBALL="cv-${VERSION}.tar.gz"
           DEPLOYMENT_FILE="argocd/manifests/cv/deployment.yaml"
-          RELEASE_URL="https://forge.ops.eblu.me/api/packages/eblume/generic/cv/${VERSION}/${TARBALL}"
+          RELEASE_URL="https://forge.eblu.me/api/packages/eblume/generic/cv/${VERSION}/${TARBALL}"
 
           echo "Updating $DEPLOYMENT_FILE with CV_RELEASE_URL..."
           yq -i "(.spec.template.spec.containers[0].env[] | select(.name == \"CV_RELEASE_URL\")).value = \"${RELEASE_URL}\"" "$DEPLOYMENT_FILE"