feat: add code-simplifier power

README.md

@@ -56,6 +56,13 @@ Documentation is available at https://kiro.dev/docs/powers/
 
 ---
 
+### code-simplifier
+**Code Simplifier** - Simplify and refine code across languages and frameworks for clarity, consistency, and maintainability while preserving functionality.
+
+**MCP Servers:** context7
+
+---
+
 ### datadog
 **Datadog Observability** - Query logs, metrics, traces, RUM events, incidents, and monitors from Datadog for production debugging and performance analysis.
 

code-simplifier/POWER.md

@@ -0,0 +1,175 @@
+---
+name: "code-simplifier"
+displayName: "Code Simplifier"
+description: "Simplify and refine code across languages and frameworks for clarity, consistency, and maintainability while preserving behavior."
+keywords: ["refactoring", "simplification", "clean-code", "maintainability", "readability", "code-review"]
+author: "Raishin"
+---
+
+# Code Simplifier
+
+## Overview
+
+Code Simplifier helps you make behavior-preserving refactors that improve readability, consistency, and maintainability. It combines general simplification rules with language-specific and framework-specific steering so you can clean up code without drifting away from the repository's conventions.
+
+Use this power when you want to reduce nesting, remove duplication, improve naming, simplify control flow, or align code with established framework patterns while keeping behavior the same.
+
+## Onboarding
+
+### Local Installation
+
+1. Open the Kiro Powers UI.
+2. Add a custom power from a local directory.
+3. Select the `code-simplifier` power directory.
+4. Confirm the power appears in the installed list.
+
+### MCP Setup
+
+This is a Guided MCP Power because it depends on Context7 lookups in Kiro.
+
+1. Ensure `CONTEXT7_API_KEY` is available in the environment used by Kiro.
+2. Verify the power includes `mcp.json` with a `context7` server definition.
+3. Install or update the power in Kiro so the MCP configuration is reloaded.
+
+### Verification
+
+After installation, verify:
+
+- the power appears in Kiro's installed powers list
+- the `context7` MCP server connects successfully
+- the power activates for refactoring or code simplification requests
+- the steering files are available when the agent needs stack-specific guidance
+
+## Available Steering Files
+
+This power includes focused steering files for general rules, languages, and frameworks:
+
+- **core** - Universal simplification rules and safety boundaries
+- **c** - C simplification patterns and memory-aware cleanup
+- **csharp** - C# readability, async flow, and .NET conventions
+- **java** - Modern Java simplification and maintainable OO patterns
+- **java-spring** - Spring Boot layering, DI, and controller/service cleanup
+- **js** - JavaScript readability and control-flow simplification
+- **kotlin** - Kotlin idioms, null-safety, and coroutine-aware cleanup
+- **php** - General PHP readability and maintainability guidance
+- **php-laravel** - Laravel conventions for controllers, services, and Eloquent code
+- **php-symfony** - Symfony service and controller simplification patterns
+- **python** - Pythonic cleanup and readability improvements
+- **python-django** - Django views, models, and QuerySet simplification
+- **python-fastapi** - FastAPI route, schema, and dependency cleanup
+- **python-fastmcp** - FastMCP server and tool simplification guidance
+- **python-flask** - Flask blueprint and application structure cleanup
+- **rust** - Rust ownership-aware simplification and error handling
+- **typescript** - TypeScript and TSX simplification patterns
+
+All conceptual guidance is in this `POWER.md`. The steering files provide stack-specific guidance you can load as needed.
+
+To load a specific guide:
+
+```text
+Call action "readSteering" with powerName="code-simplifier", steeringFile="core.md"
+```
+
+## When to Use This Power
+
+- Simplifying recently modified code without changing behavior
+- Refactoring controllers, services, components, functions, or small modules
+- Reducing nesting and clarifying conditionals
+- Removing duplication when the shared abstraction stays readable
+- Aligning code with current language or framework conventions
+- Reviewing a change for maintainability and readability issues
+
+## Available MCP Servers
+
+### context7
+
+**Purpose:** Query current library and framework documentation when best-practice guidance depends on version or ecosystem conventions.
+
+**Available tools:**
+- `resolve-library-id` - Find the correct documentation target
+- `query-docs` - Fetch current documentation and examples for a library or framework
+
+## Tool Usage Examples
+
+### Resolve a Documentation Target
+
+```text
+Use tool "resolve-library-id" with:
+- libraryName: "laravel"
+- query: "I want current Laravel controller and Eloquent simplification guidance"
+```
+
+### Query Current Best Practices
+
+```text
+Use tool "query-docs" with:
+- libraryId: "/laravel/docs"
+- query: "controller validation best practices"
+```
+
+## Recommended Workflow
+
+1. Read `core.md` first to establish the safety boundaries for behavior-preserving cleanup.
+2. Load the language steering file that matches the code you are touching.
+3. Load the framework steering file only when the file clearly depends on that framework.
+4. Use Context7 when current best practices or version-specific behavior matters.
+5. Keep the change local unless broader cleanup is explicitly requested.
+
+## Example Workflow
+
+### Simplify a Laravel Controller
+
+1. Activate the power for a request such as: "simplify this Laravel controller without changing behavior".
+2. Read `core.md` to apply the behavior-preserving rules first.
+3. Read `php.md` for general PHP cleanup guidance.
+4. Read `php-laravel.md` because controller and Eloquent patterns depend on Laravel conventions.
+5. Call `resolve-library-id` with:
+   - `libraryName`: `laravel`
+   - `query`: `controller validation and relationship loading best practices`
+6. Call `query-docs` with:
+   - `libraryId`: the resolved Laravel docs id
+   - `query`: `controller validation best practices`
+7. Apply the smallest refactor that improves clarity without changing interfaces, side effects, or request lifecycle behavior.
+8. Re-check that the result is more readable, still local in scope, and still follows repository conventions.
+
+## Best Practices
+
+- Preserve behavior, public interfaces, and side effects unless change is explicitly requested.
+- Prefer clarity over brevity.
+- Use guard clauses, extraction, and clearer control flow to reduce nesting.
+- Keep abstractions only when they improve readability.
+- Avoid dense or clever rewrites that make the code harder to reason about.
+- Follow the repository's existing style unless there is a clear reason not to.
+
+## Configuration
+
+This power expects Context7 to be configured through `code-simplifier/mcp.json`.
+
+- Set `CONTEXT7_API_KEY` in the environment used by Kiro before enabling the power.
+- If Context7 is unavailable, you can still use the steering files, but version-sensitive best-practice checks will be weaker.
+- Keep `autoApprove` limited to the read-only Context7 tools already defined in `mcp.json`.
+
+## Troubleshooting
+
+### The refactor changes behavior
+
+- Narrow the scope and start from the smallest safe cleanup.
+- Re-check interfaces, side effects, and lifecycle ordering.
+- Use the stack-specific steering file before broadening the change.
+
+### The right simplification is unclear
+
+- Load `core.md`, then the relevant language guide.
+- Add the framework guide only if it materially affects the code shape.
+- Use Context7 to verify current conventions when versions or APIs matter.
+
+### The code is already dense for good reason
+
+- Organize the code rather than forcing it to be shorter.
+- Prefer explicit helpers and comments over aggressive collapsing.
+
+### Context7 lookups fail
+
+- Verify that `CONTEXT7_API_KEY` is set in the environment used by Kiro.
+- Confirm the `context7` server in `code-simplifier/mcp.json` still points to `@upstash/context7-mcp`.
+- Fall back to the relevant steering file if the external docs lookup is temporarily unavailable.

code-simplifier/mcp.json

@@ -0,0 +1,19 @@
+{
+    "mcpServers": {
+        "context7": {
+            "command": "npx",
+            "args": [
+                "-y",
+                "@upstash/context7-mcp",
+                "--api-key",
+                "${CONTEXT7_API_KEY}"
+            ],
+            "env": {},
+            "disabled": false,
+            "autoApprove": [
+                "resolve-library-id",
+                "query-docs"
+            ]
+        }
+    }
+}