From b5a270e671cc60a154c4903f9058f88368c0e9a1 Mon Sep 17 00:00:00 2001
From: Amon Sawamura <amotarao@gmail.com>
Date: Sat, 31 Jan 2026 16:30:29 +0900
Subject: [PATCH 1/4] Add GitHub rulesets for core branches protection
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Core branches (main/dev) の保護ルールセットを追加。
- ブランチの削除を禁止
- Force push を禁止
- PR 必須（承認数は0でOK）
- マージ方法は通常の merge のみ許可

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 .../core-branches-protectionruleset.json      | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 github/rulesets/core-branches-protectionruleset.json

diff --git a/github/rulesets/core-branches-protectionruleset.json b/github/rulesets/core-branches-protectionruleset.json
new file mode 100644
index 0000000..ff834a4
--- /dev/null
+++ b/github/rulesets/core-branches-protectionruleset.json
@@ -0,0 +1,41 @@
+{
+  "id": 0,
+  "name": "Core branches protection ruleset",
+  "target": "branch",
+  "source_type": "Repository",
+  "source": "",
+  "enforcement": "active",
+  "conditions": {
+    "ref_name": {
+      "exclude": [],
+      "include": [
+        "refs/heads/main",
+        "refs/heads/dev",
+        "~DEFAULT_BRANCH"
+      ]
+    }
+  },
+  "rules": [
+    {
+      "type": "deletion"
+    },
+    {
+      "type": "non_fast_forward"
+    },
+    {
+      "type": "pull_request",
+      "parameters": {
+        "required_approving_review_count": 0,
+        "dismiss_stale_reviews_on_push": false,
+        "required_reviewers": [],
+        "require_code_owner_review": false,
+        "require_last_push_approval": false,
+        "required_review_thread_resolution": false,
+        "allowed_merge_methods": [
+          "merge"
+        ]
+      }
+    }
+  ],
+  "bypass_actors": []
+}

From e7ecad2ba914beb8458fe119e551dba86c353875 Mon Sep 17 00:00:00 2001
From: Amon Sawamura <amotarao@gmail.com>
Date: Sat, 31 Jan 2026 17:00:11 +0900
Subject: [PATCH 2/4] fix format

---
 github/rulesets/core-branches-protectionruleset.json | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/github/rulesets/core-branches-protectionruleset.json b/github/rulesets/core-branches-protectionruleset.json
index ff834a4..2742e42 100644
--- a/github/rulesets/core-branches-protectionruleset.json
+++ b/github/rulesets/core-branches-protectionruleset.json
@@ -8,11 +8,7 @@
   "conditions": {
     "ref_name": {
       "exclude": [],
-      "include": [
-        "refs/heads/main",
-        "refs/heads/dev",
-        "~DEFAULT_BRANCH"
-      ]
+      "include": ["refs/heads/main", "refs/heads/dev", "~DEFAULT_BRANCH"]
     }
   },
   "rules": [
@@ -31,9 +27,7 @@
         "require_code_owner_review": false,
         "require_last_push_approval": false,
         "required_review_thread_resolution": false,
-        "allowed_merge_methods": [
-          "merge"
-        ]
+        "allowed_merge_methods": ["merge"]
       }
     }
   ],

From 0e4b2229a6ac378359e6fd448925b3164f671ef1 Mon Sep 17 00:00:00 2001
From: Amon Sawamura <amotarao@gmail.com>
Date: Sat, 31 Jan 2026 17:01:17 +0900
Subject: [PATCH 3/4] Remove response-only fields from ruleset JSON

Remove id, source_type, and source fields which are returned by GitHub API but should not be included in request payloads.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 github/rulesets/core-branches-protectionruleset.json | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/github/rulesets/core-branches-protectionruleset.json b/github/rulesets/core-branches-protectionruleset.json
index 2742e42..659d654 100644
--- a/github/rulesets/core-branches-protectionruleset.json
+++ b/github/rulesets/core-branches-protectionruleset.json
@@ -1,9 +1,6 @@
 {
-  "id": 0,
   "name": "Core branches protection ruleset",
   "target": "branch",
-  "source_type": "Repository",
-  "source": "",
   "enforcement": "active",
   "conditions": {
     "ref_name": {

From 0db8070fe12964975da48434d1755d1e9abe5c75 Mon Sep 17 00:00:00 2001
From: Amon Sawamura <amotarao@gmail.com>
Date: Sat, 31 Jan 2026 17:02:03 +0900
Subject: [PATCH 4/4] change order

---
 github/rulesets/core-branches-protectionruleset.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/github/rulesets/core-branches-protectionruleset.json b/github/rulesets/core-branches-protectionruleset.json
index 659d654..94285e4 100644
--- a/github/rulesets/core-branches-protectionruleset.json
+++ b/github/rulesets/core-branches-protectionruleset.json
@@ -2,6 +2,7 @@
   "name": "Core branches protection ruleset",
   "target": "branch",
   "enforcement": "active",
+  "bypass_actors": [],
   "conditions": {
     "ref_name": {
       "exclude": [],
@@ -27,6 +28,5 @@
         "allowed_merge_methods": ["merge"]
       }
     }
-  ],
-  "bypass_actors": []
+  ]
 }