Add standalone mode for sx-web.org deployment

- SX_STANDALONE=true env var: no OAuth, no root header, no cross-service
  fragments. Same image runs in both rose-ash cooperative and standalone.
- Factory: added no_oauth parameter to create_base_app()
- Standalone layout defcomps skip ~root-header-auto/~root-mobile-auto
- Fixed Dockerfile: was missing sx/sx/ component directory copy
- CI: deploys sx-web swarm stack on main branch when sx changes
- Stack config at ~/sx-web/ (Caddy → sx_docs, Redis)

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

sx/Dockerfile

@@ -26,6 +26,7 @@ COPY sx/ ./sx-app-tmp/
 RUN cp -r sx-app-tmp/app.py sx-app-tmp/path_setup.py \
          sx-app-tmp/bp sx-app-tmp/sxc sx-app-tmp/services \
          sx-app-tmp/content sx-app-tmp/__init__.py ./ 2>/dev/null || true && \
+    ([ -d sx-app-tmp/sx ] && cp -r sx-app-tmp/sx ./sx || true) && \
     rm -rf sx-app-tmp
 
 # Sibling models for cross-domain SQLAlchemy imports

sx/app.py

@@ -1,10 +1,12 @@
 from __future__ import annotations
+import os
 import path_setup  # noqa: F401
-from shared.infrastructure.factory import create_base_app
 
 from bp import register_pages
 from services import register_domain_services
 
+SX_STANDALONE = os.getenv("SX_STANDALONE") == "true"
+
 
 async def sx_docs_context() -> dict:
     """SX docs app context processor — fetches cross-service fragments."""
@@ -39,11 +41,29 @@ async def sx_docs_context() -> dict:
     return ctx
 
 
+async def sx_standalone_context() -> dict:
+    """Minimal context for standalone mode — no cross-service fragments."""
+    from shared.infrastructure.context import base_context
+    ctx = await base_context()
+    ctx["menu_items"] = []
+    ctx["cart_mini"] = ""
+    ctx["auth_menu"] = ""
+    ctx["nav_tree"] = ""
+    return ctx
+
+
 def create_app() -> "Quart":
+    from shared.infrastructure.factory import create_base_app
+
+    extra_kw = {}
+    if SX_STANDALONE:
+        extra_kw["no_oauth"] = True
+
     app = create_base_app(
         "sx",
-        context_fn=sx_docs_context,
+        context_fn=sx_standalone_context if SX_STANDALONE else sx_docs_context,
         domain_services_fn=register_domain_services,
+        **extra_kw,
     )
 
     from sxc.pages import setup_sx_pages

sx/sx/layouts.sx

@@ -93,3 +93,45 @@
       :label "sx" :href "/" :level 1 :colour "violet"
       :items (~sx-main-nav :section section))
     (~root-mobile-auto)))
+
+;; ---------------------------------------------------------------------------
+;; Standalone layouts (no root header, no auth — for sx-web.org)
+;; ---------------------------------------------------------------------------
+
+(defcomp ~sx-standalone-layout-full (&key section)
+  (~sx-header-row :nav (~sx-main-nav :section section)))
+
+(defcomp ~sx-standalone-layout-oob (&key section)
+  (<> (~sx-header-row
+        :nav (~sx-main-nav :section section)
+        :oob true)
+    (~clear-oob-div :id "sx-header-child")))
+
+(defcomp ~sx-standalone-layout-mobile (&key section)
+  (~mobile-menu-section
+    :label "sx" :href "/" :level 1 :colour "violet"
+    :items (~sx-main-nav :section section)))
+
+(defcomp ~sx-standalone-section-layout-full (&key section sub-label sub-href sub-nav selected)
+  (~sx-header-row
+    :nav (~sx-main-nav :section section)
+    :child (~sx-sub-row :sub-label sub-label :sub-href sub-href
+                        :sub-nav sub-nav :selected selected)))
+
+(defcomp ~sx-standalone-section-layout-oob (&key section sub-label sub-href sub-nav selected)
+  (<> (~oob-header-sx :parent-id "sx-header-child"
+        :row (~sx-sub-row :sub-label sub-label :sub-href sub-href
+                          :sub-nav sub-nav :selected selected))
+    (~sx-header-row
+      :nav (~sx-main-nav :section section)
+      :oob true)))
+
+(defcomp ~sx-standalone-section-layout-mobile (&key section sub-label sub-href sub-nav)
+  (<>
+    (when sub-nav
+      (~mobile-menu-section
+        :label (or sub-label section) :href sub-href :level 2 :colour "violet"
+        :items sub-nav))
+    (~mobile-menu-section
+      :label "sx" :href "/" :level 1 :colour "violet"
+      :items (~sx-main-nav :section section))))

sx/sxc/pages/layouts.py

@@ -1,11 +1,27 @@
 """SX docs layout registration — all layouts delegate to .sx defcomps."""
 from __future__ import annotations
+import os
 
 
 def _register_sx_layouts() -> None:
     """Register the sx docs layout presets."""
     from shared.sx.layouts import register_sx_layout
 
-    register_sx_layout("sx", "sx-layout-full", "sx-layout-oob", "sx-layout-mobile")
-    register_sx_layout("sx-section", "sx-section-layout-full",
-                       "sx-section-layout-oob", "sx-section-layout-mobile")
+    if os.getenv("SX_STANDALONE") == "true":
+        register_sx_layout("sx",
+                           "sx-standalone-layout-full",
+                           "sx-standalone-layout-oob",
+                           "sx-standalone-layout-mobile")
+        register_sx_layout("sx-section",
+                           "sx-standalone-section-layout-full",
+                           "sx-standalone-section-layout-oob",
+                           "sx-standalone-section-layout-mobile")
+    else:
+        register_sx_layout("sx",
+                           "sx-layout-full",
+                           "sx-layout-oob",
+                           "sx-layout-mobile")
+        register_sx_layout("sx-section",
+                           "sx-section-layout-full",
+                           "sx-section-layout-oob",
+                           "sx-section-layout-mobile")