Fix markdown formatting issues and add contribution infrastructure

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Report a bug or issue with a plugin
+title: '[BUG] '
+labels: bug
+assignees: ''
+---
+
+## Bug Description
+
+A clear and concise description of what the bug is.
+
+## Plugin Information
+
+- **Plugin name**: (e.g., sales, data, productivity)
+- **Plugin version**: (check plugin.json)
+- **Environment**: Claude Code / Claude Cowork
+
+## Steps to Reproduce
+
+1. Go to '...'
+2. Run command '/...'
+3. Enter input '...'
+4. See error
+
+## Expected Behavior
+
+What you expected to happen.
+
+## Actual Behavior
+
+What actually happened.
+
+## Screenshots/Logs
+
+If applicable, add screenshots or error messages to help explain the problem.
+
+```
+Paste any error messages or logs here
+```
+
+## Additional Context
+
+- MCP connectors enabled: (list any)
+- Related skills/commands: (list any)
+- Any other context about the problem
+
+## Possible Solution
+
+If you have suggestions on how to fix the bug, please share them here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Suggest a new feature or enhancement
+title: '[FEATURE] '
+labels: enhancement
+assignees: ''
+---
+
+## Feature Description
+
+A clear and concise description of the feature you'd like to see.
+
+## Problem It Solves
+
+Describe the problem or pain point this feature would address.
+
+**Example scenario:**
+"As a [role], I want to [do something] so that [benefit]."
+
+## Proposed Solution
+
+Describe how you envision this feature working.
+
+**Example workflow:**
+1. User does X
+2. Claude responds with Y
+3. Result is Z
+
+## Which Plugin?
+
+Which plugin should this feature be added to? Or is this a new plugin?
+
+- [ ] Existing plugin: _______________
+- [ ] New plugin needed
+
+## Command or Skill?
+
+Should this be:
+- [ ] A slash command (user invokes explicitly)
+- [ ] A skill (triggers automatically)
+- [ ] Both
+- [ ] Not sure
+
+## Required Connectors
+
+What external tools/APIs would this need?
+
+- List connectors: _______________
+- Or: [ ] Works standalone
+
+## Alternatives Considered
+
+Describe alternative solutions or features you've considered.
+
+## Examples
+
+Provide examples of:
+- How a user would invoke this
+- What input they'd provide
+- What output they'd receive
+
+```
+Example usage here
+```
+
+## Additional Context
+
+Add any other context, screenshots, or references about the feature request.
+
+## Would You Contribute?
+
+- [ ] I'd like to help implement this
+- [ ] I can provide testing/feedback
+- [ ] I can help with documentation
+- [ ] Just suggesting the idea

.github/ISSUE_TEMPLATE/plugin_submission.md

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+---
+name: Plugin Submission
+about: Submit a new plugin to the marketplace
+title: '[PLUGIN] '
+labels: new-plugin
+assignees: ''
+---
+
+## Plugin Information
+
+**Plugin name**: 
+**Version**: 
+**Author**: 
+**License**: Apache 2.0 (required)
+
+## Description
+
+Provide a clear, concise description of what this plugin does and who it's for.
+
+**Target audience**: (e.g., "Data analysts", "Sales teams", "Content creators")
+
+**Main use cases**:
+1. 
+2. 
+3. 
+
+## Plugin Components
+
+**Commands** (slash commands):
+- [ ] `/plugin:command-1` - Description
+- [ ] `/plugin:command-2` - Description
+
+**Skills** (auto-triggered):
+- [ ] skill-1 - Description, triggers when...
+- [ ] skill-2 - Description, triggers when...
+
+## Connectors
+
+**Required connectors** (plugin won't work without):
+- None / List them
+
+**Optional connectors** (enhance functionality):
+- Connector 1 - Adds: _______________
+- Connector 2 - Adds: _______________
+
+**MCP servers included in `.mcp.json`**:
+- [ ] Listed and tested
+
+## Testing
+
+I have tested this plugin:
+- [ ] In Claude Code
+- [ ] In Claude Cowork
+- [ ] With connectors enabled
+- [ ] Without connectors (standalone mode)
+- [ ] All commands work as documented
+- [ ] All skills trigger correctly
+
+## Documentation
+
+- [ ] README.md with installation and usage
+- [ ] CONNECTORS.md (if using connectors)
+- [ ] All commands have usage examples
+- [ ] All skills have clear trigger descriptions
+- [ ] plugin.json is complete and valid
+
+## Code Quality
+
+- [ ] All JSON files are valid
+- [ ] All markdown renders correctly
+- [ ] No sensitive data in files
+- [ ] Follows naming conventions
+- [ ] Follows style guide in CONTRIBUTING.md
+
+## Examples
+
+Provide examples of the plugin in action:
+
+**Example 1: [Scenario]**
+```
+User: [What they type]
+Claude: [What happens]
+Result: [What they get]
+```
+
+**Example 2: [Scenario]**
+```
+[Another example]
+```
+
+## Why Add This Plugin?
+
+Explain why this plugin would be valuable to the marketplace:
+- What gap does it fill?
+- Who requested it?
+- What makes it different from existing plugins?
+
+## Related Plugins
+
+Is this similar to any existing plugins? How is it different?
+
+## Maintenance
+
+- [ ] I commit to maintaining this plugin
+- [ ] I will respond to issues and questions
+- [ ] I will keep dependencies updated
+
+## Additional Context
+
+Any other information about the plugin submission.
+
+## Checklist
+
+Before submitting:
+- [ ] Plugin structure matches guidelines
+- [ ] All required files present
+- [ ] Documentation is complete
+- [ ] Tested thoroughly
+- [ ] No placeholder TODOs in files
+- [ ] Ready for review

.github/PULL_REQUEST_TEMPLATE.md

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+## Description
+
+<!-- Provide a clear description of what this PR does -->
+
+## Type of Change
+
+<!-- Check all that apply -->
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation update
+- [ ] New plugin
+- [ ] Plugin enhancement
+
+## Related Issues
+
+<!-- Link to related issues -->
+
+Fixes #(issue number)
+Relates to #(issue number)
+
+## Changes Made
+
+<!-- List the specific changes in this PR -->
+
+- 
+- 
+- 
+
+## Plugin(s) Affected
+
+<!-- List which plugins are affected by this change -->
+
+- [ ] All plugins
+- [ ] Specific plugins: _______________
+
+## Testing
+
+<!-- Describe how you tested these changes -->
+
+**Tested in:**
+- [ ] Claude Code
+- [ ] Claude Cowork
+- [ ] Both
+
+**Test scenarios:**
+1. 
+2. 
+3. 
+
+**Test results:**
+- [ ] All tests passed
+- [ ] Manual testing completed
+- [ ] Edge cases considered
+
+## Documentation
+
+- [ ] README.md updated (if needed)
+- [ ] CONNECTORS.md updated (if needed)
+- [ ] Command documentation updated (if needed)
+- [ ] Skill documentation updated (if needed)
+- [ ] Examples provided
+
+## Code Quality
+
+- [ ] JSON files are valid
+- [ ] Markdown renders correctly
+- [ ] No trailing whitespace
+- [ ] Follows style guidelines
+- [ ] No sensitive data included
+- [ ] Commit messages are clear
+
+## Breaking Changes
+
+<!-- If this introduces breaking changes, describe them and migration path -->
+
+- [ ] No breaking changes
+- [ ] Breaking changes described below:
+
+## Screenshots
+
+<!-- If applicable, add screenshots to demonstrate the changes -->
+
+## Checklist
+
+<!-- Ensure all items are checked before submitting -->
+
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my code
+- [ ] I have commented my code where needed
+- [ ] I have updated the documentation accordingly
+- [ ] My changes generate no new warnings
+- [ ] I have tested my changes thoroughly
+- [ ] Any dependent changes have been merged
+
+## Additional Notes
+
+<!-- Any additional information for reviewers -->