Feature Planning

Use this skill when implementing NEW functionality or capabilities.

Follow all base planning rules, plus the feature-specific rules below. </IMPORTANT>

Feature-Specific Requirements

Changelog Summary

Every new feature MUST include a changelog summary. After analysis, create a concise summary:

## Changelog Entry

### Added
- <Brief description of the new feature>
- <User-facing benefit or capability>

This summary will be added to CHANGELOG.md upon completion.

Test Plan

After COMPLETING the feature implementation:

1. Create test plan file: planning/testplan-<feature-name>.md
2. Invoke testing-testplan skill for the template
3. Document automated tests and manual verification scenarios
4. Include regression checks for related features

Unit Tests

Then ASK the user:

"Feature implementation is complete. Would you like me to add unit tests?

• Which components/functions should be tested?
• Are there specific edge cases to cover?"

If user requests tests:

1. Invoke the testing skill: testing-gtest-gmock (C++) or testing-pytest (Python)
2. Follow the test planning process from that skill
3. Write tests ONE BY ONE, waiting for user approval after each test
4. Update test plan file with test status

Pull Request

After tests (if any), ASK the user:

"Ready to create a Pull Request. Should I proceed?"

If yes, invoke git-create-pull-request skill and create PR with:

• Motivation - Why this feature is needed
• Technical Details - What was implemented
• Test Plan - How it was tested

Plan File Format

Save to planning/feature-<name>.md:

# Feature: <Feature Name>

## Goal
<Original user request>

## Changelog Summary
### Added
- <Feature description>

## Analysis
<Key findings, scope, dependencies, risks>

## PR Strategy
<Single PR or split? If split, list each PR with scope>

### PR 1: <Title> (if multiple PRs)
**Scope:** <What's included>
**Estimated size:** ~X lines

## Tasks
- [ ] Task 1
- [ ] Task 2
- [ ] Task 3
- [ ] Update CHANGELOG.md

## Test Cases
- [ ] <Test type>: <Test description>
(or "No tests requested")

## Notes
<Any additional context or decisions>

Example

User request: "Add user profile avatar upload"

Planning output:

# Feature: User Profile Avatar Upload

## Goal
Add ability for users to upload and display profile avatars

## Changelog Summary
### Added
- User profile avatar upload with image preview
- Support for JPG, PNG, and WebP formats up to 5MB

## Analysis
- Scope: ProfileSettings component, user API, storage service
- Dependencies: existing file upload utility, image processing library
- Risks: Large file handling, image format validation

## PR Strategy
Single PR (~350 lines) - scope is focused and reviewable.

## Tasks
- [ ] Add avatar upload endpoint to user API
- [ ] Create AvatarUpload component with preview
- [ ] Implement image validation and resizing
- [ ] Update ProfileSettings to include avatar section
- [ ] Add avatar display to user profile header
- [ ] Update CHANGELOG.md

## Test Cases
- [ ] Unit: Avatar validation (size, format)
- [ ] Unit: Image resizing function
- [ ] Integration: Upload flow end-to-end

## Notes
- Max file size: 5MB
- Supported formats: JPG, PNG, WebP
- Avatar stored in /uploads/avatars/