Rename all 1,169 components to path-based names with namespace support

Component names now reflect filesystem location using / as path separator
and : as namespace separator for shared components:
  ~sx-header → ~layouts/header
  ~layout-app-body → ~shared:layout/app-body
  ~blog-admin-dashboard → ~admin/dashboard

209 files, 4,941 replacements across all services.

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

shared/sx/deps.py

@@ -170,7 +170,7 @@ def compute_all_deps(env: dict[str, Any]) -> None:
 def scan_components_from_sx(source: str) -> set[str]:
     """Extract component names referenced in SX source text.
 
-    Returns names with ~ prefix, e.g. {"~card", "~nav-link"}.
+    Returns names with ~ prefix, e.g. {"~card", "~shared:layout/nav-link"}.
     """
     if _use_ref():
         from .ref.sx_ref import scan_components_from_source as _ref_sc