ci(#476): гейты наблюдаемых свойств перед publish — image-smoke, migration-order на push, allowlist fail-closed, property-тесты

Retrospective of 22.06-10.07 merges showed one recurring miss class: local
logic verified, integration property never checked (#361, #353, #452, #172,
#435). This lands four gates so each of those classes fails BEFORE the
:develop image is pushed:

1. Image boot-smoke in the publish job (develop.yml + scripts/ci/image-smoke.sh):
   the exact image watchtower pulls is booted against postgres/redis services
   before the push — /api/health (startup migrator, #361-boot/#353), auth/setup,
   client dist served, hashed assets immutable + brotli (#452).
2. migration-order gate now also runs on push (test.yml): direct pushes used to
   bypass the PR-only gate; base = event.before, zero-SHA skips, force-push
   fails closed.
3. External-MCP tool allowlist fails closed (#172 class): corrupt stored value
   now reads as [] (deny-all) with an error log instead of null (allow-all);
   [] round-trips as jsonb [] via jsonbBind({preserveEmpty}) and means deny-all
   in the toolset filter. The settings form sends null for an empty tag field
   so existing "unrestricted" servers are not silently narrowed.
4. Property tests for the silent-degradation classes: converter fixpoint
   through the live server path (mcp e2e), and CollabSession cache-key
   stability under per-call fresh tokens (#435/#439 lesson) incl. a negative
   control with the token cache disabled.

Closes #476

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

apps/client/src/features/workspace/components/settings/components/ai-mcp-server-form.tsx

@@ -121,13 +121,20 @@ export default function AiMcpServerForm({
   async function handleSubmit(values: FormValues) {
     const headers = resolveHeaders();
 
+    // An empty tag field means "no restriction" and must be sent as null —
+    // since #476 the server persists a literal `[]` as deny-all (zero tools),
+    // so an empty array from this form would silently disable every tool of
+    // the server. Deny-all remains expressible via the API, not via this form.
+    const toolAllowlist =
+      values.toolAllowlist.length === 0 ? null : values.toolAllowlist;
+
     if (isEdit && server) {
       const payload: IAiMcpServerUpdate = {
         id: server.id,
         name: values.name,
         transport: values.transport,
         url: values.url,
-        toolAllowlist: values.toolAllowlist,
+        toolAllowlist,
         // Always sent: a blank value clears the stored guidance (server -> null).
         instructions: values.instructions,
         enabled: values.enabled,
@@ -140,7 +147,7 @@ export default function AiMcpServerForm({
         name: values.name,
         transport: values.transport,
         url: values.url,
-        toolAllowlist: values.toolAllowlist,
+        toolAllowlist,
         // Blank => server stores null (no guidance).
         instructions: values.instructions,
         enabled: values.enabled,

apps/client/src/features/workspace/services/ai-mcp-server-service.ts

@@ -27,7 +27,9 @@ export interface IAiMcpServerCreate {
   // Auth headers map (e.g. { Authorization: 'Bearer ...' }). Encrypted on save;
   // never returned.
   headers?: Record<string, string>;
-  toolAllowlist?: string[];
+  // Omit/null => no restriction; `[]` is persisted verbatim and means
+  // deny-all (zero tools) since #476.
+  toolAllowlist?: string[] | null;
   // Admin-authored prompt guidance (#180). Blank => stored as null.
   instructions?: string;
   enabled?: boolean;
@@ -43,7 +45,9 @@ export interface IAiMcpServerUpdate {
   transport?: McpTransport;
   url?: string;
   headers?: Record<string, string>;
-  toolAllowlist?: string[];
+  // Absent => unchanged; null => no restriction; `[]` is persisted verbatim
+  // and means deny-all (zero tools) since #476.
+  toolAllowlist?: string[] | null;
   // Admin-authored prompt guidance (#180). Absent => unchanged; blank => cleared.
   instructions?: string;
   enabled?: boolean;