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/tools/sdk/package.json

@@ -1,53 +1,54 @@
 {
-    "name": "@esengine/sdk",
-    "version": "1.0.0",
-    "description": "Unified SDK entry point for ESEngine - single import for all engine modules",
-    "main": "dist/index.js",
-    "module": "dist/index.js",
-    "types": "dist/index.d.ts",
-    "type": "module",
-    "exports": {
-        ".": {
-            "types": "./dist/index.d.ts",
-            "import": "./dist/index.js"
-        }
-    },
-    "files": [
-        "dist"
-    ],
-    "scripts": {
-        "build": "tsup",
-        "build:watch": "tsup --watch",
-        "type-check": "tsc --noEmit",
-        "clean": "rimraf dist"
-    },
-    "dependencies": {
-        "@esengine/ecs-framework": "workspace:*",
-        "@esengine/engine-core": "workspace:*",
-        "@esengine/ecs-framework-math": "workspace:*",
-        "@esengine/sprite": "workspace:*",
-        "@esengine/fairygui": "workspace:*",
-        "@esengine/audio": "workspace:*",
-        "@esengine/camera": "workspace:*",
-        "@esengine/particle": "workspace:*",
-        "@esengine/physics-rapier2d": "workspace:*",
-        "@esengine/tilemap": "workspace:*",
-        "@esengine/behavior-tree": "workspace:*",
-        "@esengine/asset-system": "workspace:*"
-    },
-    "devDependencies": {
-        "@esengine/build-config": "workspace:*",
-        "rimraf": "^5.0.5",
-        "tsup": "^8.0.0",
-        "typescript": "^5.3.3"
-    },
-    "keywords": [
-        "esengine",
-        "sdk",
-        "ecs",
-        "game-engine",
-        "unified-api"
-    ],
-    "author": "yhh",
-    "license": "MIT"
+  "name": "@esengine/sdk",
+  "version": "1.0.0",
+  "description": "Unified SDK entry point for ESEngine - single import for all engine modules",
+  "main": "dist/index.js",
+  "module": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "type": "module",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "tsup",
+    "build:watch": "tsup --watch",
+    "type-check": "tsc --noEmit",
+    "clean": "rimraf dist"
+  },
+  "dependencies": {
+    "@esengine/ecs-framework": "workspace:*",
+    "@esengine/engine-core": "workspace:*",
+    "@esengine/ecs-framework-math": "workspace:*",
+    "@esengine/sprite": "workspace:*",
+    "@esengine/fairygui": "workspace:*",
+    "@esengine/audio": "workspace:*",
+    "@esengine/camera": "workspace:*",
+    "@esengine/particle": "workspace:*",
+    "@esengine/physics-rapier2d": "workspace:*",
+    "@esengine/tilemap": "workspace:*",
+    "@esengine/behavior-tree": "workspace:*",
+    "@esengine/asset-system": "workspace:*"
+  },
+  "devDependencies": {
+    "@esengine/build-config": "workspace:*",
+    "rimraf": "^5.0.5",
+    "tsup": "^8.0.0",
+    "typescript": "^5.3.3"
+  },
+  "keywords": [
+    "esengine",
+    "sdk",
+    "ecs",
+    "game-engine",
+    "unified-api"
+  ],
+  "author": "yhh",
+  "license": "MIT",
+  "private": true
 }