chore: install openagent opencode
Signed-off-by: Dmytro Stanchiev <git@dmytros.dev>
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.opencode/command/analyze-patterns.md
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.opencode/command/analyze-patterns.md
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---
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id: analyze-patterns
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name: analyze-patterns
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description: "Analyze codebase for patterns and similar implementations"
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type: command
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category: analysis
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version: 1.0.0
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---
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# Command: analyze-patterns
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## Description
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Analyze codebase for recurring patterns, similar implementations, and refactoring opportunities. Replaces codebase-pattern-analyst subagent functionality with a command-based interface.
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## Usage
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```bash
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/analyze-patterns [--pattern=<pattern>] [--language=<lang>] [--depth=<level>] [--output=<format>]
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```
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## Parameters
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| Parameter | Type | Required | Description |
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|-----------|------|----------|-------------|
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| `--pattern` | string | No | Pattern name or regex to search for (e.g., "singleton", "factory", "error-handling") |
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| `--language` | string | No | Filter by language: js, ts, py, go, rust, java, etc. |
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| `--depth` | string | No | Search depth: shallow (current dir) \| medium (src/) \| deep (entire repo) |
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| `--output` | string | No | Output format: text (default) \| json \| markdown |
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## Behavior
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### Pattern Search
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- Searches codebase for pattern matches using regex + semantic analysis
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- Identifies similar implementations across files
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- Groups results by pattern type + similarity score
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- Suggests refactoring opportunities
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### Analysis Output
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- Pattern occurrences with file locations + line numbers
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- Similarity metrics (how similar are implementations?)
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- Refactoring suggestions (consolidate, extract, standardize)
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- Code quality insights (duplication, inconsistency)
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### Result Format
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```
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Pattern Analysis Report
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=======================
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Pattern: [pattern_name]
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Occurrences: [count]
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Files: [file_list]
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Implementations:
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1. [file:line] - [description] (similarity: X%)
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2. [file:line] - [description] (similarity: Y%)
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...
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Refactoring Suggestions:
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- [suggestion 1]
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- [suggestion 2]
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...
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Quality Insights:
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- [insight 1]
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- [insight 2]
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...
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```
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## Examples
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### Find all error handling patterns
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```bash
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/analyze-patterns --pattern="error-handling" --language=ts
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```
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### Analyze factory patterns across codebase
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```bash
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/analyze-patterns --pattern="factory" --depth=deep --output=json
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```
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### Find similar API endpoint implementations
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```bash
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/analyze-patterns --pattern="api-endpoint" --language=js --output=markdown
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```
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### Search for singleton patterns
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```bash
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/analyze-patterns --pattern="singleton" --depth=medium
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```
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## Implementation
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### Delegation
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- Delegates to: **opencoder** (primary)
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- Uses context search capabilities for pattern matching
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- Returns structured pattern analysis results
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### Context Requirements
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- Codebase structure + file organization
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- Language-specific patterns + conventions
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- Project-specific naming conventions
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- Existing refactoring guidelines
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### Processing Steps
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1. Parse command parameters
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2. Validate pattern syntax (regex or predefined)
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3. Search codebase using glob + grep tools
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4. Analyze semantic similarity of matches
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5. Group results by pattern + similarity
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6. Generate refactoring suggestions
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7. Format output per requested format
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8. Return analysis report
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## Predefined Patterns
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### JavaScript/TypeScript
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- `singleton` - Singleton pattern implementations
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- `factory` - Factory pattern implementations
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- `observer` - Observer/event pattern implementations
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- `error-handling` - Error handling patterns
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- `async-patterns` - Promise/async-await patterns
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- `api-endpoint` - API endpoint definitions
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- `middleware` - Middleware implementations
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### Python
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- `decorator` - Decorator pattern implementations
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- `context-manager` - Context manager patterns
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- `error-handling` - Exception handling patterns
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- `async-patterns` - Async/await patterns
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- `class-patterns` - Class design patterns
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### Go
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- `interface-patterns` - Interface implementations
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- `error-handling` - Error handling patterns
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- `goroutine-patterns` - Goroutine patterns
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- `middleware` - Middleware implementations
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### Custom Patterns
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Users can provide custom regex patterns for domain-specific analysis.
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## Output Formats
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### Text (Default)
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Human-readable report with clear sections and formatting
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### JSON
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Structured data for programmatic processing:
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```json
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{
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"pattern": "error-handling",
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"occurrences": 12,
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"files": ["file1.ts", "file2.ts"],
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"implementations": [
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{
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"file": "file1.ts",
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"line": 42,
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"description": "try-catch block",
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"similarity": 0.95
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}
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],
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"suggestions": ["Consolidate error handling", "Extract to utility"]
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}
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```
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### Markdown
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Formatted for documentation + sharing:
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```markdown
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# Pattern Analysis: error-handling
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**Occurrences**: 12
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**Files**: 3
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**Similarity Range**: 85-98%
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## Implementations
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...
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```
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## Integration
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### Registry Entry
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```json
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{
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"id": "analyze-patterns",
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"name": "analyze-patterns",
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"type": "command",
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"category": "analysis",
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"description": "Analyze codebase for patterns and similar implementations",
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"delegates_to": ["opencoder"],
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"parameters": ["pattern", "language", "depth", "output"]
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}
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```
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### Profile Assignment
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- **Developer Profile**: ✅ Included
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- **Full Profile**: ✅ Included
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- **Advanced Profile**: ✅ Included
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- **Business Profile**: ❌ Not included
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## Notes
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- Replaces `codebase-pattern-analyst` subagent functionality
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- Command-based interface is more flexible + discoverable
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- Supports both predefined + custom patterns
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- Results can be exported for documentation
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- Integrates with refactoring workflows
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---
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## Validation Checklist
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✅ Command structure defined
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✅ Parameters documented
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✅ Behavior specified
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✅ Examples provided
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✅ Implementation details included
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✅ Output formats defined
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✅ Integration ready
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✅ Ready for registry integration
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**Status**: Ready for deployment
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