Auto-include deps and signals spec modules with HTML adapter

The Python bootstrapper now auto-includes deps (component analysis)
and signals (reactive islands) when the HTML adapter is present,
matching production requirements where sx_ref.py must export
compute_all_deps, transitive_deps, page_render_plan, etc.

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

shared/sx/ref/bootstrap_py.py

@@ -1051,10 +1051,13 @@ def compile_ref_to_py(
             if sm not in SPEC_MODULES:
                 raise ValueError(f"Unknown spec module: {sm!r}. Valid: {', '.join(SPEC_MODULES)}")
             spec_mod_set.add(sm)
+    # html adapter needs deps (component analysis) and signals (island rendering)
+    if "html" in adapter_set:
+        if "deps" in SPEC_MODULES:
+            spec_mod_set.add("deps")
+        if "signals" in SPEC_MODULES:
+            spec_mod_set.add("signals")
     has_deps = "deps" in spec_mod_set
-    # html adapter uses signal runtime for server-side island rendering
-    if "html" in adapter_set and "signals" in SPEC_MODULES:
-        spec_mod_set.add("signals")
 
     # Core files always included, then selected adapters, then spec modules
     sx_files = [