Rewrite org profile around verified toolchain narrative

.github/workflows/checks.yml

@@ -0,0 +1,47 @@
+name: Checks
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  ci:
+    name: ci
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Validate files exist
+        run: |
+          test -f profile/README.md
+          test -f profile/assets/pipeline.svg
+
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Validate markdown
+        run: |
+          # Check for broken relative image references
+          grep -oP 'src="\.\/[^"]+"|srcset="\.\/[^"]+"' profile/README.md | \
+            sed 's/.*"\.\//profile\//' | sed 's/".*//' | \
+            while read -r file; do
+              if [ ! -f "$file" ]; then
+                echo "Missing referenced file: $file"
+                exit 1
+              fi
+            done
+          echo "All referenced files exist"
+
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Validate SVG
+        run: |
+          # Check SVG is well-formed XML
+          python3 -c "import xml.etree.ElementTree as ET; ET.parse('profile/assets/pipeline.svg')"
+          echo "SVG is valid"