feat(skills): Add contribution guidelines check to beads skills

home/roles/development/skills/beads_plan.md

@@ -51,13 +51,32 @@ When this command is invoked:
    - Any linked tickets or docs
    - Use Read tool WITHOUT limit/offset
 
-2. **Spawn initial research tasks**:
+2. **Check for contribution guidelines**:
+
+   ```bash
+   # Check standard locations for contribution guidelines
+   for f in CONTRIBUTING.md .github/CONTRIBUTING.md docs/CONTRIBUTING.md; do
+     if [ -f "$f" ]; then
+       echo "Found: $f"
+       break
+     fi
+   done
+   ```
+
+   If found:
+   - Read the file fully
+   - Extract actionable requirements (testing, code style, documentation, PR conventions)
+   - These requirements MUST be incorporated into the plan's Success Criteria
+
+   If not found, note "No contribution guidelines found" and proceed.
+
+3. **Spawn initial research tasks**:
    - **codebase-locator**: Find all files related to the task
    - **codebase-analyzer**: Understand current implementation
    - **codebase-pattern-finder**: Find similar features to model after
    - **thoughts-locator**: Find any existing plans or decisions
 
-3. **Read all files identified by research**:
+4. **Read all files identified by research**:
    - Read them FULLY into main context
    - Cross-reference with requirements
 
@@ -273,6 +292,12 @@ Always separate into two categories:
 - Performance under real conditions
 - Edge cases hard to automate
 
+**From Contribution Guidelines** (if CONTRIBUTING.md exists):
+- Include any testing requirements specified in guidelines
+- Include any code style/linting requirements
+- Include any documentation requirements
+- Reference the guideline: "Per CONTRIBUTING.md: {requirement}"
+
 ## Example Invocation
 
 ```