fix(bundle): mount the projection cache in the web-app overlay

The cache now opens its domain through ctx.storageDomain, which the
web-app overlay provides (storage-json + storage-domain, backend json).
A parent layer cannot see a child layer's services, so the base-layer
mount from the file-root design is reverted: the cache mount moves back
to web-app next to its storage dependencies, and Config.root is gone.

packages/bundle/base/cordis.patch.yml

@@ -100,13 +100,6 @@
       config:
         root: !!js dshHomePath('sessions')
 
-    - id: session-projection-cache
-      name: '@deepseek-ai/dsh-session-projection-cache'
-      config:
-        root: !!js dshHomePath('projections')
-        writeEveryEvents: 200
-        writeIntervalMs: 5000
-
     # Durable image bytes live outside the append-only session log. Messages
     # keep content-addressed references that this shared backend resolves for
     # provider requests and authorized history reads.

packages/bundle/base/package.json

@@ -74,7 +74,6 @@
     "@deepseek-ai/dsh-session-checkpoint-policy": "workspace:^",
     "@deepseek-ai/dsh-session-persistence-jsonl": "workspace:^",
     "@deepseek-ai/dsh-session-projection": "workspace:^",
-    "@deepseek-ai/dsh-session-projection-cache": "workspace:^",
     "@deepseek-ai/dsh-session-query-sqlite": "workspace:^",
     "@deepseek-ai/dsh-session-telemetry-otel": "workspace:^",
     "@deepseek-ai/dsh-session-title": "workspace:^",

packages/bundle/web-app/cordis.patch.yml

@@ -73,6 +73,12 @@
     - id: workspace
       name: '@deepseek-ai/dsh-workspace'
 
+    - id: session-projection-cache
+      name: '@deepseek-ai/dsh-session-projection-cache'
+      config:
+        writeEveryEvents: 200
+        writeIntervalMs: 5000
+
     # Whole-log turn/step counts for the chat stats strip (the sessionStats
     # projection key); the projection registry itself is a base-layer row.
     - id: session-stats

pnpm-lock.yaml

@@ -1093,9 +1093,6 @@ importers:
       '@deepseek-ai/dsh-session-projection':
         specifier: workspace:^
         version: link:../../session/session-projection
-      '@deepseek-ai/dsh-session-projection-cache':
-        specifier: workspace:^
-        version: link:../../session/session-projection-cache
       '@deepseek-ai/dsh-session-query-sqlite':
         specifier: workspace:^
         version: link:../../session-query/session-query-sqlite
@@ -6230,9 +6227,6 @@ importers:
       '@deepseek-ai/cordis':
         specifier: workspace:^
         version: link:../../../vendor/cordis
-      '@deepseek-ai/dsh-atomic-write':
-        specifier: workspace:^
-        version: link:../../util/atomic-write
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../runtime-diagnostics/invariants
@@ -6242,6 +6236,9 @@ importers:
       '@deepseek-ai/dsh-session-projection':
         specifier: workspace:^
         version: link:../session-projection
+      '@deepseek-ai/dsh-storage-domain':
+        specifier: workspace:^
+        version: link:../../storage/storage-domain
 
   packages/session/session-stats:
     dependencies: