chore(agents): add GraphQL scripts for PR review thread operations

Avoids recurring $ escaping issues when running GraphQL queries/mutations
inline in shell commands. The /rev skill now references these files via
`-F query=@.claude/graphql/...` instead of inline query strings.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: cpcloud

.claude/commands/rev.md

@@ -16,25 +16,12 @@ These two steps are independent -- start both in parallel.
 
 ### 2a. PR review feedback
 
-1. Fetch unresolved review threads (use the GraphQL API for threaded context):
+1. Fetch unresolved review threads using the checked-in GraphQL query:
    ```
-   gh api graphql -f query='
-     query($owner:String!, $repo:String!, $pr:Int!) {
-       repository(owner:$owner, name:$repo) {
-         pullRequest(number:$pr) {
-           reviewThreads(first:100) {
-             nodes {
-               id
-               isResolved
-               comments(first:50) {
-                 nodes { id databaseId author{login} body path line }
-               }
-             }
-           }
-         }
-       }
-     }' -f owner=cpcloud -f repo=micasa \
-        -F pr="$(gh pr view --json number --jq '.number')"
+   gh api graphql \
+     -F query=@.claude/graphql/review-threads.graphql \
+     -f owner=cpcloud -f repo=micasa \
+     -F pr="$(gh pr view --json number --jq '.number')"
    ```
 2. For each **unresolved** thread:
    - Read the referenced file and line to understand the context
@@ -44,12 +31,11 @@ These two steps are independent -- start both in parallel.
      `gh api repos/cpcloud/micasa/pulls/<pr>/comments/<databaseId>/replies -f body='...'`
      Explain how it was addressed (commit hash, what changed).
    - **Resolve the thread** if you are extremely confident the feedback
-     has been fully addressed. Use the GraphQL mutation:
+     has been fully addressed. Use the checked-in GraphQL mutation:
      ```
-     gh api graphql -f query='
-       mutation($id:ID!) { resolveReviewThread(input:{threadId:$id}) {
-         thread { isResolved }
-       }}' -f id=<thread_node_id>
+     gh api graphql \
+       -F query=@.claude/graphql/resolve-thread.graphql \
+       -f id=<thread_node_id>
      ```
      If there is any doubt the comment hasn't been fully addressed, leave
      the thread open for the reviewer.

.claude/graphql/resolve-thread.graphql

@@ -0,0 +1,7 @@
+mutation($id: ID!) {
+  resolveReviewThread(input: { threadId: $id }) {
+    thread {
+      isResolved
+    }
+  }
+}

.claude/graphql/review-threads.graphql

@@ -0,0 +1,22 @@
+query($owner: String!, $repo: String!, $pr: Int!) {
+  repository(owner: $owner, name: $repo) {
+    pullRequest(number: $pr) {
+      reviewThreads(first: 100) {
+        nodes {
+          id
+          isResolved
+          comments(first: 50) {
+            nodes {
+              id
+              databaseId
+              author { login }
+              body
+              path
+              line
+            }
+          }
+        }
+      }
+    }
+  }
+}