fix: update Claude workflow permissions to match official example

The workflows had read-only permissions which prevented the action from
posting comments and interacting with PRs/issues. Updated to use write
permissions as specified in the official anthropic/claude-code-action
documentation.

Author: jamesbrink

.github/workflows/claude-code-review.yml

@@ -18,10 +18,11 @@ jobs:
 
     runs-on: ubuntu-latest
     permissions:
-      contents: read
-      pull-requests: read
-      issues: read
+      contents: write
+      pull-requests: write
+      issues: write
       id-token: write
+      actions: read
 
     steps:
       - name: Checkout repository

.github/workflows/claude.yml

@@ -19,11 +19,11 @@ jobs:
       (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
     runs-on: ubuntu-latest
     permissions:
-      contents: read
-      pull-requests: read
-      issues: read
+      contents: write
+      pull-requests: write
+      issues: write
       id-token: write
-      actions: read # Required for Claude to read CI results on PRs
+      actions: read
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4