Add dashboard to demo stack

- docker-compose.demo.yml: add otel-collector and dashboard services.
  otel-collector bridges gateway OTLP gRPC (4317) to the dashboard.
  dashboard builds from sibling ../agent-gateway-dashboard repo.
- demo/setup.sh: start otel-collector and dashboard alongside gateway;
  pass AGENT_GATEWAY_DEMO_DASHBOARD_URL to demo env; print dashboard
  URL in the ready message.
- demo/demo-agent.sh: emit agent.requested and agent.prompted events
  to POST /api/events on the dashboard when a prompt is dispatched,
  lighting up the alice→agent-platform and agent-platform→agent edges.
- .gitignore: exclude /agent-gateway-dashboard/ (sibling repo checked
  out inside this directory during development).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Peter-SL5

.gitignore

@@ -1,3 +1,7 @@
 /target
 .cursor/
 __pycache__/
+/agent-gateway-dashboard/
+.run/
+/certs/
+/config.toml

demo/demo-agent.sh

@@ -15,6 +15,7 @@ DEFAULT_SWTPM_PORT="${AGENT_GATEWAY_DEMO_SWTPM_PORT:-2321}"
 TPM2_PKCS11_STORE="${TPM2_PKCS11_STORE:-$HOME/.tpm2_pkcs11}"
 TOKEN_LABEL="${AGENT_GATEWAY_TPM_TOKEN_LABEL:-agent-gateway}"
 USER_PIN="${AGENT_GATEWAY_TPM_USER_PIN:-}"
+DASHBOARD_URL="${AGENT_GATEWAY_DEMO_DASHBOARD_URL:-http://localhost:3000}"
 export TPM2_PKCS11_STORE
 
 usage() {
@@ -254,6 +255,18 @@ cmd_grant() {
   grant_permissions
 }
 
+emit_prompt_events() {
+  local principal="$1" identity="$2"
+  curl -sf --max-time 2 -X POST "$DASHBOARD_URL/api/events" \
+    -H 'Content-Type: application/json' \
+    -d "{\"event_type\":\"agent.requested\",\"source\":\"agent-platform\",\"attributes\":{\"user.id\":\"$principal\",\"agent.id\":\"$identity\"}}" \
+    >/dev/null || true
+  curl -sf --max-time 2 -X POST "$DASHBOARD_URL/api/events" \
+    -H 'Content-Type: application/json' \
+    -d "{\"event_type\":\"agent.prompted\",\"source\":\"agent-platform\",\"attributes\":{\"agent.id\":\"$identity\"}}" \
+    >/dev/null || true
+}
+
 cmd_prompt() {
   [[ $# -ge 1 ]] || { echo "error: prompt requires AGENT_HANDLE" >&2; usage; exit 2; }
   HANDLE="$1"
@@ -271,6 +284,7 @@ cmd_prompt() {
   done
 
   [[ -n "$PROMPT" ]] || { echo "error: prompt requires --prompt" >&2; exit 2; }
+  emit_prompt_events "$PRINCIPAL" "$IDENTITY"
   ensure_sidecar "$STATE_DIR_CURRENT"
   [[ -f "$DEFAULT_MOCK_CA" ]] || {
     echo "error: mock service CA file not found: $DEFAULT_MOCK_CA" >&2

demo/setup.sh

@@ -123,6 +123,7 @@ demo_env=(
   "NODE_EXTRA_CA_CERTS=$MOCK_CA"
   "SSL_CERT_FILE=$MOCK_CA"
   "TPM2_PKCS11_STORE=$TPM2_PKCS11_STORE"
+  "AGENT_GATEWAY_DEMO_DASHBOARD_URL=http://localhost:3000"
 )
 
 select_compose
@@ -140,6 +141,9 @@ if [[ ! -f "$REPO_ROOT/config.toml" ]]; then
   echo "==> Creating config.toml from config.example.toml"
   cp "$REPO_ROOT/config.example.toml" "$REPO_ROOT/config.toml"
 fi
+# Ensure the gateway (running in Docker) sends OTLP to the collector service name,
+# not localhost (which would be the gateway container itself).
+sed -i 's|otlp_endpoint = "http://localhost:4317"|otlp_endpoint = "http://otel-collector:4317"|' "$REPO_ROOT/config.toml"
 
 echo "==> Building local sidecar"
 cargo build -p agent_gateway_sidecar
@@ -152,8 +156,8 @@ compose up -d --force-recreate postgres mock-services
 wait_for_postgres
 apply_migrations
 
-echo "==> Starting gateway"
-compose up -d --force-recreate gateway
+echo "==> Starting gateway, otel-collector, and dashboard"
+compose up -d --force-recreate gateway otel-collector dashboard
 
 echo "==> Registering demo principal $PRINCIPAL"
 env "${demo_env[@]}" "$REPO_ROOT/registry-cli/register-principal-key.sh" "$PRINCIPAL"
@@ -195,6 +199,8 @@ cat <<EOF
 
 Demo is ready.
 
+Dashboard: http://localhost:3000
+
 Mock service URLs available through the gateway:
   https://docstore/health
   https://docstore/documents

docker-compose.demo.yml

@@ -44,5 +44,29 @@ services:
       - postgres
       - mock-services
 
+  otel-collector:
+    image: otel/opentelemetry-collector:0.111.0
+    command: ["--config=/etc/otel-collector.yaml"]
+    volumes:
+      - ./agent-gateway-dashboard/otel-collector.yaml:/etc/otel-collector.yaml:ro
+    ports:
+      - "4317:4317"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      dashboard:
+        condition: service_started
+
+  dashboard:
+    build:
+      context: ./agent-gateway-dashboard
+    ports:
+      - "3000:3000"
+    environment:
+      AGENT_GATEWAY_DATABASE_URL: postgres://agent_gateway_admin:agent_gateway_dev@postgres:5432/agent_gateway
+    depends_on:
+      postgres:
+        condition: service_healthy
+
 volumes:
   agent-gateway-demo-postgres: