refactor(bundle): fold the Windows shell platform layer into the base rows

Entry \disabled\ interpolation makes the launcher's separate platform layer
unnecessary: the base bundle's cordis.patch.yml now gates both shell stacks
on its own rows — bash-sandbox/tool-bash disable on win32, and their twins
pwsh-sandbox/tool-pwsh mount only there with the inverted expression — so
exactly one shell stack mounts per host from one shared patch file.

windows.cordis.patch.yml and the launcher's windows-shell.ts injection (boot,
live recomposition, config dumps) are deleted, with the workspace-constraints
entry and the dsh-base exports/files entries following. The windows-shell spec
pins the effective per-platform roster through the real bundle layers, and
base.spec pins the four symmetric gates. The superseded active notes are
updated and cross-linked; the loader note records the fold itself.

packages/bundle/base/package.json

@@ -23,7 +23,6 @@
       "default": "./lib/invariant.js"
     },
     "./cordis.patch.yml": "./cordis.patch.yml",
-    "./windows.cordis.patch.yml": "./windows.cordis.patch.yml",
     "./src/*": "./src/*",
     "./package.json": "./package.json"
   },
@@ -31,7 +30,6 @@
     "lib/index.js",
     "lib/invariant.js",
     "cordis.patch.yml",
-    "windows.cordis.patch.yml",
     "lib/types/**/*.d.ts"
   ],
   "license": "BSD-3-Clause",