Add Gitea Actions workflows, CI config, and docs

renovate.json

@@ -0,0 +1,27 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "description": "Renovate config — groups minor/patch, limits PRs, updates Docker base images.",
+  "schedule": ["before 6am on Monday"],
+  "prHourlyLimit": 5,
+  "prConcurrentLimit": 5,
+  "labels": ["dependencies"],
+  "packageRules": [
+    {
+      "description": "Group all minor and patch updates to reduce PR noise",
+      "matchUpdateTypes": ["minor", "patch"],
+      "groupName": "minor-and-patch",
+      "groupSlug": "minor-patch"
+    },
+    {
+      "description": "Update Docker base images (FROM ...)",
+      "matchDatasources": ["docker"],
+      "enabled": true
+    }
+  ],
+  "docker": {
+    "enabled": true
+  }
+}