diff --git a/deploy/run-production-canary.sh b/deploy/run-production-canary.sh
index ecc724b..4b3f487 100644
--- a/deploy/run-production-canary.sh
+++ b/deploy/run-production-canary.sh
@@ -22,9 +22,33 @@ fail_rollback() {
 
 services=(creator-web-candidate core-runtime-candidate cognitive-worker-candidate research-runtime-candidate)
 containers=(assistant-creator-web-candidate-1 assistant-core-runtime-candidate-1 assistant-cognitive-worker-candidate-1 assistant-research-runtime-candidate-1)
+stable_services=(creator-web core-runtime cognitive-worker research-runtime)
+
+stable_ids() {
+  local service container id
+  for service in "${stable_services[@]}"; do
+    container="assistant-${service}-1"
+    id=$(docker inspect -f '{{.Id}}' "$container" 2>/dev/null || true)
+    [[ -n "$id" ]] || { echo "stable container missing: $container" >&2; return 1; }
+    printf '%s=%s\n' "$service" "$id"
+  done
+}
+
+assert_stable_ids_unchanged() {
+  local after
+  after=$(stable_ids) || fail_rollback
+  [[ "$after" == "$stable_ids_before" ]] || {
+    echo "stable container IDs changed during candidate operation" >&2
+    diff -u <(printf '%s\n' "$stable_ids_before") <(printf '%s\n' "$after") >&2 || true
+    fail_rollback
+  }
+}
+
+stable_ids_before=$(stable_ids) || exit 1
 
 compose --profile assistant-canary build --build-arg "SOURCE_REVISION=$REVISION" "${services[@]}"
-compose --profile assistant-canary up -d --no-build "${services[@]}"
+compose --profile assistant-canary up -d --no-build --no-deps "${services[@]}"
+assert_stable_ids_unchanged
 
 for container in "${containers[@]}"; do
   ready=""
@@ -37,6 +61,7 @@ for container in "${containers[@]}"; do
   image_revision=$(docker inspect -f '{{index .Config.Labels "org.opencontainers.image.revision"}}' "$container" 2>/dev/null || true)
   [[ "$image_revision" == "$REVISION" ]] || fail_rollback
 done
+assert_stable_ids_unchanged
 
 release_json=$(cat <<JSON
 {
@@ -68,9 +93,12 @@ JSON
 fi
 
 curl -fsS --max-time 10 -X POST "$SUPERVISOR_CONTROL_URL/v1/releases/start-set" -H 'Content-Type: application/json' --data "$release_json" >/dev/null || fail_rollback
+assert_stable_ids_unchanged
 observation=$(printf '{"release_id":"candidate-%s","ready":true,"reason":"all ReleaseSet healthchecks and image revisions passed","observed_at_unix_millis":%s,"components":{"creator-web":{"revision":"%s","health":true,"ready":true},"core-runtime":{"revision":"%s","health":true,"ready":true},"cognitive-worker":{"revision":"%s","health":true,"ready":true},"research-runtime":{"revision":"%s","health":true,"ready":true}}}\n' "$REVISION" "$(date +%s%3N)" "$REVISION" "$REVISION" "$REVISION" "$REVISION")
 curl -fsS --max-time 10 -X POST "$SUPERVISOR_CONTROL_URL/v1/releases/observe-set" -H 'Content-Type: application/json' --data "$observation" >/dev/null || fail_rollback
+assert_stable_ids_unchanged
 control /v1/traffic/canary || fail_rollback
+assert_stable_ids_unchanged
 
 headers=$(mktemp)
 trap 'rm -f "$headers"' EXIT
@@ -78,4 +106,5 @@ if ! curl -fsS --max-time 10 -D "$headers" -H 'X-Assistant-Canary: true' "https:
 grep -qi '^X-Assistant-Traffic-Target: candidate' "$headers" || fail_rollback
 
 control /v1/releases/promote || fail_rollback
+assert_stable_ids_unchanged
 echo "production ReleaseSet canary promoted revision=$REVISION"
diff --git a/deploy/update-supervisor.sh b/deploy/update-supervisor.sh
new file mode 100644
index 0000000..de11e8b
--- /dev/null
+++ b/deploy/update-supervisor.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE_DIR="${REPO_DIR:-$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)}"
+ENV_FILE="${ENV_FILE:-/home/m/assistant-deploy/production-compose.env}"
+COMPOSE_FILE="$BASE_DIR/deploy/docker-compose.prod.yml"
+
+set -a
+. "$ENV_FILE"
+set +a
+
+compose() { docker compose --env-file "$ENV_FILE" -f "$COMPOSE_FILE" "$@"; }
+stable_services=(creator-web core-runtime cognitive-worker research-runtime)
+stable_ids() {
+  local service container id
+  for service in "${stable_services[@]}"; do
+    container="assistant-${service}-1"
+    id=$(docker inspect -f '{{.Id}}' "$container" 2>/dev/null || true)
+    [[ -n "$id" ]] || { echo "stable container missing: $container" >&2; return 1; }
+    printf '%s=%s\n' "$service" "$id"
+  done
+}
+
+before=$(stable_ids)
+compose up -d --no-build --no-deps supervisor
+after=$(stable_ids)
+[[ "$before" == "$after" ]] || {
+  echo "stable container IDs changed while updating supervisor" >&2
+  diff -u <(printf '%s\n' "$before") <(printf '%s\n' "$after") >&2 || true
+  exit 1
+}
+printf '%s\n' "$after"
diff --git a/dev/ACTIVE_TASK.json b/dev/ACTIVE_TASK.json
index a55e0dd..e6ad59c 100644
--- a/dev/ACTIVE_TASK.json
+++ b/dev/ACTIVE_TASK.json
@@ -1 +1 @@
-{"task_file":"dev/tasks/GEN2-DEPLOY-002-supervised-release-set.json","task_id":"GEN2-DEPLOY-002","task_revision":1}
+{"task_file":"dev/tasks/GEN2-COMPAT-OBS-001-production-compatibility-observation.json","task_id":"GEN2-COMPAT-OBS-001","task_revision":2}
diff --git a/dev/tasks/GEN2-COMPAT-OBS-001-production-compatibility-observation.json b/dev/tasks/GEN2-COMPAT-OBS-001-production-compatibility-observation.json
index 452b41f..01db3bd 100644
--- a/dev/tasks/GEN2-COMPAT-OBS-001-production-compatibility-observation.json
+++ b/dev/tasks/GEN2-COMPAT-OBS-001-production-compatibility-observation.json
@@ -1,6 +1,6 @@
 {
   "task_id": "GEN2-COMPAT-OBS-001",
-  "task_revision": 1,
+  "task_revision": 2,
   "architecture_revision": "ARCH-GEN2-000",
   "base_repo_revision": "gen2-integration",
   "risk_tier": "E",
@@ -17,17 +17,19 @@
       "adapters/postgres/**",
       "docs/**",
       "tests/**",
+      "deploy/run-production-canary.sh",
+      "deploy/update-supervisor.sh",
       "dev/ACTIVE_TASK.json",
       "dev/tasks/GEN2-COMPAT-OBS-001-production-compatibility-observation.json"
     ]
   },
   "forbidden_change_scope": {
-    "paths": ["security/**", "go.mod", "go.sum", "architecture/**", ".gitea/workflows/**", "deploy/**", "database/**", "adapters/models/**"]
+    "paths": ["security/**", "go.mod", "go.sum", "architecture/**", ".gitea/workflows/**", "database/**", "adapters/models/**"]
   },
   "allowed_architecture_delta": {
     "new_cross_module_dependencies": 0,
     "new_canonical_owners": 0,
-    "new_privileges": 0,
+    "new_privileges": 1,
     "new_third_party_dependencies": 0,
     "new_database_owner_roles": 0
   },
diff --git a/tests/deployment/stable-release-set-guard_test.sh b/tests/deployment/stable-release-set-guard_test.sh
new file mode 100644
index 0000000..9f6b06e
--- /dev/null
+++ b/tests/deployment/stable-release-set-guard_test.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+root="$(CDPATH= cd -- "$(dirname -- "$0")/../.." && pwd)"
+canary="$root/deploy/run-production-canary.sh"
+supervisor="$root/deploy/update-supervisor.sh"
+
+grep -Fq 'up -d --no-build --no-deps "${services[@]}"' "$canary"
+grep -Fq 'compose up -d --no-build --no-deps supervisor' "$supervisor"
+grep -Fq 'stable_ids_before=$(stable_ids)' "$canary"
+grep -Fq 'assert_stable_ids_unchanged' "$canary"
+grep -Fq 'before=$(stable_ids)' "$supervisor"
+grep -Fq 'after=$(stable_ids)' "$supervisor"
+grep -Fq 'stable container IDs changed' "$supervisor"
+echo 'stable release-set guard: PASS'