fix(mcp-apps-renderer): address review on the React-pilot PR

Bridge-free /activity (review blocker): the `./activity` entry pulled ext-apps'
LATEST_PROTOCOL_VERSION through constants.ts, statically dragging the App SDK +
zod/v4 (~+55 kB gzip) into react-core's eager chunk. Move MCP_APPS_PROTOCOL_VERSION
to the bridge side (session.ts), sourced from the /app-bridge subpath the session
already imports - single source of truth, no hand-maintained literal, zero extra
cost. dist/activity.mjs and dist/constants.mjs now carry no @modelcontextprotocol
edge.

Keep react-core's zod peer at >=3.25 (review blocker): the floor moved down to the
package, it did not go away; ext-apps + the MCP SDK both hard-require it, so >=3.0.0
is an ERESOLVE install failure once an MCP App renders.

Drop the <copilotkit-mcp-app> web component from this PR: nothing consumes it here
(the React adapter builds its own iframe) and it carried two open defects. It lands
with the Vue/Angular adapters, its first real consumers. Removes its files, exports,
tsdown entry, and the now-unused lit dependency.

Also: add content.serverId to the bind effect deps; delete drained thread entries
from the request queue's maps (bounded growth); register the package in
static_compat.yml (+ a compat-check script) and static_bundle_size.yml; publint
repository.url -> git+https. Manifest regenerated.

scripts/release/public-api/manifest.v1.json

@@ -1072,46 +1072,6 @@
             "path": "packages/mcp-apps-renderer/package.json",
             "selector": "exports[\"./package.json\"]"
           }
-        },
-        {
-          "importPath": "@copilotkit/mcp-apps-renderer/web-components",
-          "exportKey": "./web-components",
-          "kind": "code",
-          "conditions": {
-            "import": {
-              "types": "./dist/web-components/index.d.mts",
-              "default": "./dist/web-components/index.mjs"
-            },
-            "require": {
-              "types": "./dist/web-components/index.d.cts",
-              "default": "./dist/web-components/index.cjs"
-            }
-          },
-          "provenance": {
-            "kind": "package-json",
-            "path": "packages/mcp-apps-renderer/package.json",
-            "selector": "exports[\"./web-components\"]"
-          }
-        },
-        {
-          "importPath": "@copilotkit/mcp-apps-renderer/web-components/define",
-          "exportKey": "./web-components/define",
-          "kind": "code",
-          "conditions": {
-            "import": {
-              "types": "./dist/web-components/define.d.mts",
-              "default": "./dist/web-components/define.mjs"
-            },
-            "require": {
-              "types": "./dist/web-components/define.d.cts",
-              "default": "./dist/web-components/define.cjs"
-            }
-          },
-          "provenance": {
-            "kind": "package-json",
-            "path": "packages/mcp-apps-renderer/package.json",
-            "selector": "exports[\"./web-components/define\"]"
-          }
         }
       ],
       "compatibility": {
@@ -1233,7 +1193,7 @@
         "peerDependencies": {
           "react": "^18 || ^19 || ^19.0.0-rc",
           "react-dom": "^18 || ^19 || ^19.0.0-rc",
-          "zod": ">=3.0.0"
+          "zod": ">=3.25"
         },
         "provenance": [
           {