The indexing package installs, and there is still one verifier

`1.0.1` moves the data layer from `dependencies` to `peerDependencies`, satisfied
by the application's own copy. The path that broke `1.0.0` survives only in
devDependencies, which pnpm never installs for a git dependency -- verified at the
tag's commit rather than taken on trust.

One verifier, proven: the data layer and `@ng-org/web` each resolve to the same
realpath from the application and from inside the new package, and exactly one
`@ng-org/web` exists in the whole store. No overrides, no resolutions, no hoisting
flag, no `.npmrc` -- the peer dependency did it alone, which is the point: the
singleton becomes structural instead of something checked afterwards.

The runtime surface matches the engagement exactly -- five values exported, every
other published name type-only and erased. Nothing undeclared, nothing missing.

Local wiring stays ONE script rather than a sibling: a provider registry drives
the same copy-overlay, the same `--once`, the same watch loop, only the paths
differ. Its single-instance assertion became a loop over every package a provider
shares with the application, which matters here because that provider's own
checkout carries `file:` links -- the very symlink hazard the script exists for.

Its header no longer promises what the old one did: a running dev server never
picks up a refreshed node_modules package, not even across a real rebuild.

package.json

@@ -17,12 +17,14 @@
     "build:orm": "rdf-orm build --input ./src/shared/shapes/shex --output ./src/shared/shapes/orm",
     "validate": "bun scripts/validate.ts",
     "build:ng": "bash scripts/build-ng-packages.sh",
-    "link:polyfill": "bun scripts/link-polyfill.ts",
+    "link:polyfill": "bun scripts/link-polyfill.ts polyfill",
+    "link:indexing": "bun scripts/link-polyfill.ts indexing",
     "storybook": "storybook dev -p 6006",
     "build-storybook": "storybook build"
   },
   "dependencies": {
     "@ng-eventually/polyfill": "git+https://gitea.reconnexion.apps.gueraud.net/Reconnexion/ng-eventually.git#a8d53010c227462cc9317e9be499c2100ca8d533&path:/packages/polyfill",
+    "@ng-helpers/indexing": "git+https://gitea.reconnexion.apps.gueraud.net/Sylvain/ng-helpers.git#v1.0.1",
     "@ng-org/alien-deepsignals": "0.1.2-alpha.11",
     "@ng-org/orm": "0.1.2-alpha.18",
     "@ng-org/shex-orm": "0.1.2-alpha.8",