diff --git a/.github/workflows/copyright-check.yml b/.github/workflows/copyright-check.yml
index a712559..1e06bcc 100644
--- a/.github/workflows/copyright-check.yml
+++ b/.github/workflows/copyright-check.yml
@@ -33,7 +33,7 @@ jobs:
           echo "Default branch detected: ${DEFAULT_BRANCH}"
 
       - name: Checkout default branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0  # Need full history for proper git attribution
           ref: ${{ steps.default-branch.outputs.branch }}
@@ -265,7 +265,7 @@ jobs:
 
       - name: Close existing copyright PRs
         if: steps.check-changes.outputs.changes == 'true'
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             // Find and close any existing monthly copyright PRs
@@ -302,7 +302,7 @@ jobs:
       - name: Create Pull Request
         if: steps.check-changes.outputs.changes == 'true'
         id: create-pr
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             const branchName = '${{ steps.create-branch.outputs.branch_name }}';
@@ -363,7 +363,7 @@ jobs:
 
       - name: Request review from repository owner
         if: steps.check-changes.outputs.changes == 'true'
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             const prNumber = ${{ steps.create-pr.outputs.pr_number }};
diff --git a/.gitignore b/.gitignore
index 2f96afa..76e066f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -61,7 +61,7 @@ __pycache__/
 *.pyc
 
 # Claude global/project instruction files (local only)
-CLAUDE*
+CLAUDE.local.md
 
 # Claude-generated artifacts (local only)
 docs/superpowers/
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..d6775e7
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,40 @@
+# CLAUDE.md (DesignPatterns)
+
+## What this is
+Reference collection of Gang of Four patterns (plus Cloud, Concurrency, Enterprise, Integration,
+Microservices groups) implemented in C# (.NET 8), Java, and JavaScript. Educational examples, no shipped service.
+Layout: `<Language>/<Category>/<Pattern>/`, each pattern with its own README.
+
+## Inputs
+- Owner requests for new or fixed patterns. No `PROJECT_WORK.md` in this repo. Status tables live in `CSharp/README.md`,
+  `Java/PATTERN_CATALOG.md`, `Javascript/README.md`.
+
+## Process
+```bash
+cd CSharp/<Category>/<Pattern> && dotnet run      # each pattern has its own .csproj
+cd Java/<Category>/<Pattern> && javac *.java && java Main
+cd Javascript/<Category>/<Pattern> && node index.js
+```
+Prereqs per README: .NET SDK (8.0 for CSharp), JDK 11+, Node 14+. Keep the same pattern/folder names across all three languages.
+
+## Outputs
+- Nothing deploys. Work on `develop`; the only CI is `.github/workflows/copyright-check.yml`
+  (monthly copyright header update, opens a PR). New source files need the copyright header.
+
+## Verification
+- `dotnet build` in the changed C# pattern folder, `javac` for Java, `node` for JS; confirm the demo runs.
+- No repo-wide test suite. Unknown, verify before assuming otherwise.
+
+## Read only when needed
+| Doing X | Read |
+|---|---|
+| Pattern list, learning path | `README.md` |
+| C# status and structure | `CSharp/README.md`, `CSharp/Creational/IMPLEMENTATION_SUMMARY.md` |
+| Java catalog | `Java/PATTERN_CATALOG.md`, `Java/README.md` |
+| JavaScript layout | `Javascript/README.md` |
+| SEO guidance (generic, 41KB) | `SEO.md` (grep the table of contents) |
+
+## Landmines
+- README status tables can lag the code (e.g. C# Structural shows partial); check folders before claiming completeness.
+- Java/JS pattern READMEs may differ from C# ones; keep behavior parity when editing one language.
+- Never use em/en dashes. No AI attribution in commits.