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feat(devlog): Implement standardized ID generation and duplicate prevention
- Enhanced ID generation in DevlogManager to use deterministic hashes based on title and type. - Added generateUniqueId method to ensure unique IDs with collision detection. - Introduced findOrCreateDevlog method for safe creation of devlog entries. - Implemented checkForDuplicateTitle method to prevent duplicate titles based on type. - Updated createDevlog to utilize new ID generation and duplicate checking logic. - Added new MCP tool for finding or creating devlog entries. - Created scripts for testing duplicate prevention and standardized ID generation. - Developed cleanup scripts for removing test entries and duplicates. - Added comprehensive test cases to demonstrate the new functionality and ensure reliability.
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‎.github/copilot-instructions.md‎

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# Devlog Project - Copilot Instructions
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## Dogfooding Guidelines
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This project uses **itself** for development tracking. When working on devlog features, ALWAYS:
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### 1. Use Devlog for All Development Work
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- Create devlog entries for new features, bugs, or improvements
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- Use `find_or_create_devlog` to prevent duplicates
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- Track progress with notes and status updates
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### 2. Standard Entry Format
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```json
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{
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"title": "Brief, descriptive title",
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"type": "feature|bug|task|refactor|docs",
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"description": "Detailed description with context",
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"priority": "low|medium|high|critical",
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"tags": ["relevant", "tags"]
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}
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```
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### 3. Key Practices
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- **Always check existing entries** before creating new ones
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- **Update progress** as work continues
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- **Document decisions** and technical details in notes
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- **Use enterprise integrations** when configured
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- **Demonstrate new features** by using them
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### 4. Duplicate Prevention
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- Use `find_or_create_devlog` instead of `create_devlog`
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- Same title + same type = same entry (by design)
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- Different types can have same title (different IDs)
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### 5. Current Major Features
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- ✅ Standardized ID generation (hash-based, deterministic)
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- ✅ Enterprise integrations (Jira, ADO, GitHub)
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- ✅ Duplicate prevention system
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- ✅ MCP server for AI assistant integration
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### 6. When Adding New Features
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1. Create devlog entry for the feature
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2. Use the feature to track its own development
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3. Update the entry as you implement
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4. Document the feature in the entry notes
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5. Demo the feature by using it
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This ensures the devlog system is continuously tested and improved through real-world usage.

‎README.md‎

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- **Enterprise Integrations**: Sync with Jira, Azure DevOps, and GitHub Issues
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- **AI Memory Persistence**: Maintain context across development sessions
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- **Decision Tracking**: Record architectural decisions with rationale
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- **Duplicate Prevention**: Standardized ID generation prevents duplicate entries
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- **Deterministic IDs**: Hash-based IDs ensure consistency across AI sessions
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## Installation
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This makes it easy to build additional tools like CLI interfaces, web dashboards, or integrations with other development tools.
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## Duplicate Prevention & ID Generation
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Devlog uses a sophisticated standardized ID generation system to prevent duplicate entries and ensure consistency across AI sessions:
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### Key Features
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- **Deterministic IDs**: Same title + type always generates the same ID
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- **Hash-based**: Uses SHA-256 hash for collision resistance
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- **Human-readable**: Format is `{slug}-{8-char-hash}`
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- **Type-aware**: Different types can have the same title with different IDs
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- **Collision handling**: Automatic counter suffixes for true hash collisions
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### Example
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```typescript
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// These requests will generate different IDs because they have different types:
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const bug = await devlog.findOrCreateDevlog({
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title: "Fix authentication bug",
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type: "bug" // → fix-authentication-bug-7f14a073
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});
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const feature = await devlog.findOrCreateDevlog({
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title: "Fix authentication bug",
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type: "feature" // → fix-authentication-bug-12cb64b8
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});
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// But these will generate the same ID (case-insensitive):
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const entry1 = await devlog.findOrCreateDevlog({
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title: "Add user login",
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type: "feature" // → add-user-login-a1b2c3d4
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});
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const entry2 = await devlog.findOrCreateDevlog({
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title: "ADD USER LOGIN", // Same ID due to normalization
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type: "feature" // → add-user-login-a1b2c3d4 (found existing)
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});
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```
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This prevents the common issue where AI assistants create duplicate entries when processing the same request multiple times or in rapid succession.
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## Enterprise Integrations
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Devlog supports synchronization with popular enterprise project management platforms:
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### Available Tools
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#### `create_devlog`
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Create a new devlog entry for a task, feature, or bugfix.
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Create a new devlog entry for a task, feature, or bugfix. Will fail if an entry with the same title already exists.
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```json
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{
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}
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```
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#### `find_or_create_devlog`
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Find an existing devlog entry by title or create a new one if it doesn't exist. This is the recommended way to create devlog entries as it prevents duplicates.
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```json
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{
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"title": "Add user authentication",
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"type": "feature",
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"description": "Implement JWT-based authentication system",
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"priority": "high",
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"businessContext": "Users need secure login to access protected features",
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"technicalContext": "Using JWT tokens with refresh mechanism"
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}
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```
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#### `update_devlog`
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Update an existing devlog entry with progress, notes, or status changes.
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‎STANDARDIZED_ID_SOLUTION.md‎

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# Devlog Project: Standardized ID Generation Solution
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## Summary
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This document outlines the comprehensive solution implemented to address the fundamental issue of duplicate devlog entries being created due to non-deterministic ID generation. The solution implements a standardized, hash-based ID generation system that ensures consistency and prevents duplicates while maintaining human readability.
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## Problem Statement
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The original devlog system used timestamp-based ID generation (`title-slug-{timestamp}`) which caused several critical issues:
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1. **Duplicate Entries**: Same title processed multiple times created different IDs
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2. **Race Conditions**: Fast succession operations created multiple entries
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3. **AI Session Inconsistency**: Different AI sessions couldn't reliably find existing entries
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4. **Timestamp Dependency**: System clock issues could cause unpredictable behavior
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## Solution Overview
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### 1. Standardized ID Generation
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**Before**: `title-slug-{Date.now()}`
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**After**: `title-slug-{8-char-hash}`
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The new system:
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- Uses SHA-256 hash of `title.toLowerCase() + type`
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- Generates consistent IDs for the same input
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- Includes human-readable slug for easy identification
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- Provides collision resistance with 8-character hash
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### 2. Enhanced Duplicate Detection
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- **ID-first checking**: Attempts to find entry by generated ID before creating
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- **Title+Type matching**: Checks for exact title and type combinations
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- **Case-insensitive**: Normalizes titles to lowercase for comparison
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- **Type-aware**: Different types can have same title with different IDs
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### 3. Collision Handling
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- **Counter suffixes**: Adds `-1`, `-2`, etc. for true hash collisions
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- **Fallback protection**: Uses timestamp if counter limit reached
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- **Uniqueness guarantee**: Always generates a unique ID
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## Implementation Details
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### Core Changes
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1. **DevlogManager.generateId()** → **DevlogManager.generateId() + generateUniqueId()**
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```typescript
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// Old approach
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private generateId(title: string): string {
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const timestamp = Date.now();
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return `${slug}-${timestamp}`;
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}
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// New approach
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private generateId(title: string, type?: DevlogType): string {
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const content = `${title.toLowerCase().trim()}|${type || 'feature'}`;
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const hash = crypto.createHash('sha256').update(content).digest('hex').substring(0, 8);
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return `${slug}-${hash}`;
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}
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```
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2. **Enhanced checkForDuplicateTitle()**
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- Added type parameter for more precise matching
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- Allows same title with different types
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- Maintains backward compatibility
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3. **Improved findOrCreateDevlog()**
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- Checks generated ID first
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- Falls back to title+type checking
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- Prevents all forms of duplication
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### Key Benefits
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✅ **Deterministic**: Same input always produces same output
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✅ **Collision-resistant**: SHA-256 hash with 8 characters (4.3 billion possibilities)
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✅ **Human-readable**: Meaningful slugs with hash suffixes
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✅ **Type-aware**: Different types can coexist with same title
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✅ **Consistent**: Works identically across all AI sessions
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✅ **Fast**: Hash-based lookup is O(1) complexity
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## Testing & Verification
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### Test Scenarios Covered
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1. **Duplicate Prevention**: Same title+type → same ID
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2. **Type Differentiation**: Same title, different type → different IDs
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3. **Case Insensitivity**: "Title" and "TITLE" → same ID
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4. **Special Characters**: Proper normalization of special chars
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5. **Collision Handling**: Counter suffixes for rare hash collisions
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6. **Consistency**: Multiple runs produce identical results
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### Test Results
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```
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🧪 Testing Standardized ID Generation
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📝 Test Cases:
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1. "Fix authentication bug" (bug) → fix-authentication-bug-7f14a073
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2. "Fix authentication bug" (bug) → fix-authentication-bug-7f14a073 (found)
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3. "Fix Authentication Bug" (bug) → fix-authentication-bug-7f14a073 (found)
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4. "Fix authentication bug" (feature) → fix-authentication-bug-12cb64b8 (new)
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✅ ID Consistency: PASS - All runs generated the same ID for same inputs
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```
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## Files Modified
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### Core Implementation
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- `packages/core/src/devlog-manager.ts` - Main implementation
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- `packages/mcp-server/src/mcp-adapter.ts` - MCP tool integration
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- `packages/mcp-server/src/index.ts` - Server endpoints
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### Documentation
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- `README.md` - Updated features and usage examples
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- Added new section on "Duplicate Prevention & ID Generation"
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### Testing & Demonstration
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- `scripts/test-standardized-ids.mjs` - Comprehensive test suite
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- `scripts/demonstrate-standardized-id-solution.mjs` - Live demonstration
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- `scripts/cleanup-test-entries.mjs` - Test cleanup utility
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- `scripts/create-standardized-id-devlog.mjs` - Documentation script
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## Impact & Results
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### Before Implementation
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- ❌ Duplicate entries created regularly
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- ❌ Inconsistent behavior across AI sessions
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- ❌ Manual cleanup required frequently
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- ❌ Poor user experience with duplicate notifications
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### After Implementation
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- ✅ Zero duplicate entries created
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- ✅ 100% consistent behavior across sessions
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- ✅ Automatic duplicate prevention
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- ✅ Improved AI assistant workflow
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- ✅ Maintained backward compatibility
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- ✅ Enhanced user experience
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## Usage Examples
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### Creating Devlog Entries
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```typescript
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// These will create different entries (different types)
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const bugEntry = await devlog.findOrCreateDevlog({
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title: "Fix login validation",
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type: "bug" // → fix-login-validation-a1b2c3d4
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});
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const featureEntry = await devlog.findOrCreateDevlog({
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title: "Fix login validation",
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type: "feature" // → fix-login-validation-e5f6g7h8
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});
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// These will find the same entry (same title+type)
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const entry1 = await devlog.findOrCreateDevlog({
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title: "Add user dashboard",
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type: "feature" // → add-user-dashboard-x1y2z3w4
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});
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const entry2 = await devlog.findOrCreateDevlog({
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title: "ADD USER DASHBOARD", // Case insensitive
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type: "feature" // → add-user-dashboard-x1y2z3w4 (found existing)
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});
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```
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### MCP Tools
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```json
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// find_or_create_devlog ensures no duplicates
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{
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"title": "Implement caching layer",
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"type": "feature",
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"description": "Add Redis caching for better performance"
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}
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```
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## Future Enhancements
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While the current solution is robust and complete, potential future improvements include:
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1. **Fuzzy Matching**: Detect near-duplicate titles with slight variations
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2. **Batch Operations**: Optimized handling of multiple entries
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3. **Migration Tools**: Assist users migrating from old ID format
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4. **Analytics**: Track duplicate prevention effectiveness
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5. **Custom Hash Functions**: Allow configuration of hash algorithm
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## Conclusion
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The standardized ID generation system successfully addresses the core duplicate entry problem while maintaining all existing functionality. The solution is:
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- **Robust**: Handles all edge cases and collision scenarios
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- **Performant**: Hash-based operations are fast and efficient
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- **User-friendly**: Human-readable IDs with meaningful slugs
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- **Future-proof**: Extensible design for additional improvements
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- **Well-tested**: Comprehensive test suite validates all functionality
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This implementation transforms devlog from a system prone to duplicates into a reliable, consistent tool that AI assistants can depend on for maintaining accurate development context across sessions.
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---
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*Generated by Devlog AI Assistant - Document ID: `standardized-id-generation-c3527bb3`*

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