feat: relaunch runseal beta foundation

.github/protection.yml

@@ -0,0 +1,10 @@
+branch: main
+ruleset:
+  name: main-minimal-gate
+  enforcement: active
+  pull_request:
+    required: true
+  deletion: false
+  force_push: false
+  required_checks:
+    - Docs

.github/release-notes/beta/v0.1.0-beta.0.md

@@ -0,0 +1,12 @@
+# v0.1.0-beta.0
+
+- Fresh-repo cold start for `runseal`, with the product line still intentionally thin.
+- The current floor is explicit env injection plus stable symlinked entrypoints, not a broad workflow platform.
+- Helpers stay explicit, with `:node` now able to self-bootstrap a managed `node + npm` baseline.
+- `pnpm` and `yarn` already absorb into the same managed Node version root through normal runtime actions.
+- `corepack` is partially integrated: managed cache and shim surfaces exist, but the user-facing semantics are not final yet.
+
+## Beta boundary
+
+- This beta proves the runtime shape and helper boundary.
+- It does not freeze the long-term `:node` or `corepack` semantics.

.github/workflows/docs.yml

@@ -1,31 +1,41 @@
 name: Docs
 
 on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "docs/**"
+      - "package.json"
+      - "docs/package.json"
+      - "pnpm-workspace.yaml"
+      - "pnpm-lock.yaml"
+      - "wrangler.jsonc"
+      - "worker/**"
+      - ".github/workflows/docs.yml"
   push:
     branches:
       - main
     paths:
       - "docs/**"
       - "package.json"
+      - "docs/package.json"
+      - "pnpm-workspace.yaml"
       - "pnpm-lock.yaml"
-      - "package-lock.json"
+      - "wrangler.jsonc"
+      - "worker/**"
       - ".github/workflows/docs.yml"
   workflow_dispatch:
 
 permissions:
   contents: read
-  pages: write
-  id-token: write
 
 concurrency:
-  group: "pages"
+  group: "docs"
   cancel-in-progress: true
 
 jobs:
-  deploy:
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
+  build:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -39,22 +49,16 @@ jobs:
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: "10"
+          version: "10.32.1"
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
 
       - name: Build docs
         run: pnpm run docs:build
 
-      - name: Setup Pages
-        uses: actions/configure-pages@v5
-
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
+          name: docs-dist
           path: docs/.vitepress/dist
-
-      - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v4