feat(gui): dsh-client-hmr reload driver and the dshClient-discovered watch-build script

client-hmr is a normal plugin package composed into dev graphs only. It
listens on /plugins/events and reloads one plugin per rebuilt frame,
serialized: invalidate, prefetch (fresh factory registers while the old
fiber still serves), registry.delete before touching the fiber, drain
disposers, drop owned style tags, entry.refresh(), fiber.await() loud.
Dependency cascade costs zero client code — fiber activation epochs
re-load dependents through cordis itself. Reload is coarse by design;
no rollback in v1; self-reload works with a frame gap the next rebuild
heals.

scripts/dev-web.ts (pnpm run dev:web) is the convenience watch-build:
it discovers its package list by scanning packages/*/*/package.json for
dshClient platform "web" at startup — no hardcoded roster — and talks
no protocol to the host. Gate bookkeeping rides along: knip entries for
the new packages, README model-experience allowlist rows.

knip.json

@@ -18,7 +18,8 @@
   "workspaces": {
     ".": {
       "entry": [
-        "scripts/**/*.mjs"
+        "scripts/**/*.mjs",
+        "scripts/dev-web.ts"
       ],
       "project": [
         "scripts/**/*.ts",
@@ -66,15 +67,11 @@
     },
     "packages/host/runtime": {
       "entry": [
-        "tests/**/*.spec.ts",
-        "tests/**/*.e2e.ts"
+        "tests/**/*.spec.ts"
       ],
       "project": [
         "src/**/*.ts",
         "tests/**/*.ts"
-      ],
-      "ignoreDependencies": [
-        "@deepseek-ai/dsh-client-.+"
       ]
     },
     "packages/client/web-ui": {
@@ -391,8 +388,14 @@
       ]
     },
     "packages/examples/agent-spine-demo": {
-      "entry": ["tests/**/*.spec.ts", "tests/**/*.e2e.ts"],
-      "project": ["src/**/*.ts", "tests/**/*.ts"]
+      "entry": [
+        "tests/**/*.spec.ts",
+        "tests/**/*.e2e.ts"
+      ],
+      "project": [
+        "src/**/*.ts",
+        "tests/**/*.ts"
+      ]
     },
     "packages/ui/jsonrpc": {
       "entry": [
@@ -548,15 +551,15 @@
         "tests/**/*.tsx"
       ],
       "ignoreDependencies": [
-        "@deepseek-ai/dsh-client-ui-theme",
-        "@deepseek-ai/dsh-client-connection"
+        "@deepseek-ai/dsh-client-ui-theme"
       ]
     },
     "apps/web": {
       "entry": [
         "tests/**/*.e2e.ts",
         "tests/**/*.snapshot.ts",
-        "tests/support.ts"
+        "tests/support.ts",
+        "src/node-module-stub.ts"
       ],
       "project": [
         "src/**/*.ts",
@@ -571,6 +574,24 @@
         "react",
         "react-dom"
       ]
+    },
+    "apps/cli": {
+      "project": [
+        "src/**/*.ts"
+      ],
+      "ignoreDependencies": [
+        "@deepseek-ai/dsh-client-.+"
+      ]
+    },
+    "packages/client/modules": {
+      "project": [
+        "src/**/*.ts"
+      ]
+    },
+    "packages/client/hmr": {
+      "project": [
+        "src/**/*.ts"
+      ]
     }
   }
 }