build(release): publish the vendored framework and the native packages publicly

The three release sequences shipped with publishConfig.access: restricted, so
nothing in the @deepseek-ai scope was installable from outside the organization.

A restricted dependency is what actually blocks a public consumer: every harness
package declares the vendored framework as a peerDependency, and
dsh-sandbox-local declares the Landlock entry as a dependency. Those two
sequences therefore go public first — the nine vendor/* packages and the three
native/landlock-run packages — while the dsh family stays restricted until its
own sequence is opened deliberately. No public package requires a restricted one
in this arrangement.

Access is now per sequence, so no publish path can pass --access: one flag
cannot express two levels and would override the manifest that owns the fact.
publish.ts stops passing it, matching the native workflow, and
check-workspace-constraints holds each manifest to its own sequence's level,
which is what stops the scope from drifting one package at a time.

Harness consumers reference the Landlock entry as workspace:^ instead of
workspace:*, so a published harness package accepts the entry's patch and minor
releases. The entry keeps workspace:* for its platform packages, where the
binary must match the entry version exactly.

Two rationales that named a private registry no longer describe the vendored
sequence; they now state the durable reason, which is that the verification must
not depend on the registry already carrying matching versions.

packages/shell/bash-sandbox/package.json

@@ -48,6 +48,6 @@
     "@deepseek-ai/dsh-sandbox-local": "workspace:^",
     "@deepseek-ai/dsh-sandbox-policy": "workspace:^",
     "@deepseek-ai/cordis": "workspace:^",
-    "@deepseek-ai/node-addon-landlock-run": "workspace:*"
+    "@deepseek-ai/node-addon-landlock-run": "workspace:^"
   }
 }