chore(hygiene): restore the cordis peers and teach knip the split faces

`@deepseek-ai/cordis` returns to the peer and dev dependencies of
`dsh-client-ui-model` and `dsh-client-ui-skill`; every harness package declares
it, and the client type-assembly rename dropped it from both. The commands
manifest ships `src` alongside its generated typert faces, matching the
`./src/*` export it already declares.

knip gains the two directory-picker surface workspaces, whose specs are `.tsx`
and matched no default pattern, and ignores `zod` in the commands workspace:
that dependency belongs to the generated Remote and Host faces in `lib/`, which
knip never scans. The unused `dsh-client-test-runtime` and
`dsh-client-connection` dev dependencies are gone; the picker surface's own spec
never imported the former, and ui-settings reads the carrier's types through the
Remote assembly now.

knip.json

@@ -151,6 +151,25 @@
         "tests/**/*.tsx"
       ]
     },
+    "packages/client/ui-directory-picker": {
+      "entry": [
+        "tests/**/*.spec.tsx"
+      ],
+      "project": [
+        "src/**/*.ts",
+        "src/**/*.tsx",
+        "tests/**/*.tsx"
+      ]
+    },
+    "packages/client/ui-directory-picker-native": {
+      "entry": [
+        "tests/**/*.spec.tsx"
+      ],
+      "project": [
+        "src/**/*.ts",
+        "tests/**/*.tsx"
+      ]
+    },
     "packages/client/ui-deliverables": {
       "entry": [
         "tests/**/*.spec.tsx"
@@ -559,6 +578,9 @@
       "project": [
         "src/**/*.ts",
         "tests/**/*.ts"
+      ],
+      "ignoreDependencies": [
+        "zod"
       ]
     },
     "packages/examples/jsonrpc-demo": {