fix: add private:true to packages not meant for npm (#345)

* fix(ci): run on all PRs with conditional skip

- Remove paths filter from pull_request trigger
- Add check-changes job to detect code changes
- Skip full CI if no code files changed
- Satisfies branch protection while avoiding unnecessary builds

* fix: add private:true to packages not meant for npm

Prevents changesets from trying to publish internal packages:
- engine/* (8 packages)
- rendering/* (8 packages)
- physics/* (2 packages)
- streaming/* (1 package)
- tools/sdk, tools/worker-generator

packages/rendering/effect/package.json

@@ -1,40 +1,41 @@
 {
-    "name": "@esengine/effect",
-    "version": "1.0.0",
-    "description": "Effect system for ECS Framework / ECS 框架的效果系统",
-    "type": "module",
-    "main": "./dist/index.js",
-    "module": "./dist/index.js",
-    "types": "./dist/index.d.ts",
-    "exports": {
-        ".": {
-            "import": "./dist/index.js",
-            "types": "./dist/index.d.ts"
-        }
-    },
-    "files": [
-        "dist",
-        "module.json"
-    ],
-    "scripts": {
-        "build": "tsup",
-        "build:watch": "tsup --watch",
-        "type-check": "tsc --noEmit",
-        "clean": "rimraf dist"
-    },
-    "dependencies": {
-        "tslib": "^2.8.1"
-    },
-    "devDependencies": {
-        "@esengine/ecs-framework": "workspace:*",
-        "@esengine/blueprint": "workspace:*",
-        "@esengine/build-config": "workspace:*",
-        "@types/node": "^20.19.17",
-        "rimraf": "^5.0.0",
-        "tsup": "^8.0.0",
-        "typescript": "^5.8.3"
-    },
-    "publishConfig": {
-        "access": "public"
+  "name": "@esengine/effect",
+  "version": "1.0.0",
+  "description": "Effect system for ECS Framework / ECS 框架的效果系统",
+  "type": "module",
+  "main": "./dist/index.js",
+  "module": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "import": "./dist/index.js",
+      "types": "./dist/index.d.ts"
     }
+  },
+  "files": [
+    "dist",
+    "module.json"
+  ],
+  "scripts": {
+    "build": "tsup",
+    "build:watch": "tsup --watch",
+    "type-check": "tsc --noEmit",
+    "clean": "rimraf dist"
+  },
+  "dependencies": {
+    "tslib": "^2.8.1"
+  },
+  "devDependencies": {
+    "@esengine/ecs-framework": "workspace:*",
+    "@esengine/blueprint": "workspace:*",
+    "@esengine/build-config": "workspace:*",
+    "@types/node": "^20.19.17",
+    "rimraf": "^5.0.0",
+    "tsup": "^8.0.0",
+    "typescript": "^5.8.3"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "private": true
 }