Add Cloudflare redirect rules script and GitHub Action

- scripts/cloudflare/setup-redirects.sh: CLI tool to manage redirects
- scripts/cloudflare/redirect-rules.json: rule definitions
- .github/workflows/cloudflare-redirects.yml: manual trigger workflow
- Supports: apply, status, dry-run, delete
- Requires secrets: CLOUDFLARE_API_TOKEN, CLOUDFLARE_ZONE_ID

scripts/cloudflare/redirect-rules.json

@@ -0,0 +1,72 @@
+[
+  {
+    "expression": "http.host eq \"hub.moonweb.org\"",
+    "description": "hub.moonweb.org -> www.moonweb.org",
+    "action": "redirect",
+    "action_parameters": {
+      "from_value": {
+        "target_url": {
+          "expression": "concat(\"https://www.moonweb.org\", http.request.uri.path)"
+        },
+        "status_code": 301,
+        "preserve_query_string": true
+      }
+    }
+  },
+  {
+    "expression": "http.host eq \"infra.moonweb.org\"",
+    "description": "infra.moonweb.org -> www.moonweb.org/infra/",
+    "action": "redirect",
+    "action_parameters": {
+      "from_value": {
+        "target_url": {
+          "expression": "concat(\"https://www.moonweb.org/infra\", http.request.uri.path)"
+        },
+        "status_code": 301,
+        "preserve_query_string": true
+      }
+    }
+  },
+  {
+    "expression": "http.host eq \"smarthome.moonweb.org\"",
+    "description": "smarthome.moonweb.org -> www.moonweb.org/smarthome/",
+    "action": "redirect",
+    "action_parameters": {
+      "from_value": {
+        "target_url": {
+          "expression": "concat(\"https://www.moonweb.org/smarthome\", http.request.uri.path)"
+        },
+        "status_code": 301,
+        "preserve_query_string": true
+      }
+    }
+  },
+  {
+    "expression": "http.host eq \"code.moonweb.org\"",
+    "description": "code.moonweb.org -> www.moonweb.org/code/",
+    "action": "redirect",
+    "action_parameters": {
+      "from_value": {
+        "target_url": {
+          "expression": "concat(\"https://www.moonweb.org/code\", http.request.uri.path)"
+        },
+        "status_code": 301,
+        "preserve_query_string": true
+      }
+    }
+  },
+  {
+    "expression": "http.host eq \"retro.moonweb.org\"",
+    "description": "retro.moonweb.org -> www.moonweb.org/retro/",
+    "action": "redirect",
+    "action_parameters": {
+      "from_value": {
+        "target_url": {
+          "expression": "concat(\"https://www.moonweb.org/retro\", http.request.uri.path)"
+        },
+        "status_code": 301,
+        "preserve_query_string": true
+      }
+    }
+  }
+]