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feat: Integrate ModelRouter into EmpathyLLM core for cost optimization
- Add ModelRouter integration to EmpathyLLM with enable_model_routing parameter - Add task_type parameter to interact() method for smart model selection - Update all 5 level handlers to accept model_override for dynamic routing - Add routing metadata to response (model, tier, task_type) - Implement ConversationSummaryIndex for Redis-backed session context - Add empathy sync-claude CLI command for CLAUDE.md auto-sync - Add comprehensive tests for all new features (72 tests passing) Cost optimization tiers: - CHEAP (Haiku): summarize, classify, triage (~$0.25-1.25/M tokens) - CAPABLE (Sonnet): generate_code, fix_bug (~$3-15/M tokens) - PREMIUM (Opus): coordinate, synthesize_results (~$15-75/M tokens) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
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‎docs/features/v2.3-memory-enhancement.md‎

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# Empathy Framework v2.3 - Memory Enhancement Release
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**Date:** December 18, 2025
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This release adds three major features for distributed agent coordination and Claude Code integration:
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## 1. Conversation Summary Index
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**Location:** `src/empathy_os/memory/summary_index.py`
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Redis-backed conversation summary with topic indexing for efficient agent handoffs.
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### Key Benefits
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- **80% token savings** vs full conversation history
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- **8x faster** sub-agent startup (200-400ms vs 2-3s)
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- **Cross-session intelligence** - recall decisions from past sessions
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- **Intelligent filtering** by focus topics
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### Usage
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```python
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from empathy_os.memory import (
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ConversationSummaryIndex,
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RedisShortTermMemory,
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)
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# Initialize
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redis = RedisShortTermMemory() # or use_mock=True for testing
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index = ConversationSummaryIndex(redis)
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# Update summary incrementally
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index.update_summary("session123", {
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"type": "decision",
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"content": "Use JWT for authentication"
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})
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# Get compact context for sub-agent (filtered by topic)
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context = index.get_context_for_agent(
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"session123",
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focus_topics=["auth", "security"]
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)
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# Inject into prompt (~2,000 tokens instead of 50,000+)
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prompt = f"Previous context:\n{context.to_prompt()}\n\nTask: ..."
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# Cross-session decision recall
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decisions = index.recall_decisions("authentication", days_back=7)
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```
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### Event Types
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- `started` / `in_progress` - Updates working_on field
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- `decision` - Adds to decisions list
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- `question` - Adds to open_questions
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- `answered` - Removes answered question
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- `file_modified` - Tracks key files
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- `completed` - Adds to timeline
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---
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## 2. CLAUDE.md Auto-Sync
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**Location:** `empathy_llm_toolkit/cli/sync_claude.py`
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**Command:** `empathy-sync-claude`
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Syncs learned patterns to Claude Code's `.claude/rules/empathy/` for native integration.
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### Usage
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```bash
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# One-time sync
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empathy-sync-claude
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# Watch for changes and auto-sync
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empathy-sync-claude --watch
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# Preview without writing
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empathy-sync-claude --dry-run --verbose
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```
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### Output Structure
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```
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.claude/rules/empathy/
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├── bug-patterns.md # From patterns/debugging/
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├── security-decisions.md # From patterns/security/
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├── tech-debt-hotspots.md # From patterns/tech_debt/
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└── coding-patterns.md # From patterns/inspection/
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```
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### Example Output (bug-patterns.md)
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```markdown
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---
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paths: **/*.py, **/*.js, **/*.ts
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---
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# Bug Patterns (Auto-generated by Empathy)
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Last sync: 2025-12-18 23:11
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## Null Reference Bugs
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### When you see: `TypeError: Cannot read property 'map' of undefined`
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**Root cause:** API returned null instead of empty array
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**Fix:** Added default empty array fallback: data?.items ?? []
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```
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---
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## 3. Smart Model Router
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**Location:** `empathy_llm_toolkit/routing/model_router.py`
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Routes tasks to appropriate model tiers for cost optimization.
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### Model Tiers
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| Tier | Anthropic | OpenAI | Cost (approx) |
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|------|-----------|--------|---------------|
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| CHEAP | claude-3-5-haiku | gpt-4o-mini | $0.25-1.25/M |
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| CAPABLE | claude-sonnet-4 | gpt-4o | $3-15/M |
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| PREMIUM | claude-opus-4 | o1 | $15-75/M |
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### Task Routing
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```python
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# CHEAP tasks: summarize, classify, triage, match_pattern
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# CAPABLE tasks: generate_code, fix_bug, review_security, write_tests
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# PREMIUM tasks: coordinate, synthesize_results, architectural_decision
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```
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### Usage
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```python
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from empathy_llm_toolkit.routing import ModelRouter
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router = ModelRouter()
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# Get model for task type
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model = router.route("summarize") # → claude-3-5-haiku
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model = router.route("fix_bug") # → claude-sonnet-4
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model = router.route("coordinate") # → claude-opus-4
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# Estimate costs
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cost = router.estimate_cost("fix_bug", input_tokens=5000, output_tokens=1000)
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print(f"Estimated: ${cost:.4f}")
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# Compare costs across tiers
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costs = router.compare_costs("fix_bug", 5000, 1000)
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# {'cheap': $0.003, 'capable': $0.03, 'premium': $0.225}
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# Calculate savings vs always using premium
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savings = router.calculate_savings("summarize", 10000, 2000)
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print(f"Savings: {savings['savings_percent']:.0f}%") # ~95%
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```
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### Cost Savings Example
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**Complex task: Review PR for security, performance, and test coverage**
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| Approach | Cost |
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|----------|------|
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| All Premium (Opus) | $4.05 |
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| Smart Routing | $0.83 |
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| **Savings** | **$3.22 (80%)** |
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At 100 tasks/day = **$9,660/month saved**
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---
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## Test Coverage
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| Test Suite | Tests | Status |
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|------------|-------|--------|
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| `test_summary_index.py` | 18 | ✅ Pass |
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| `test_model_router.py` | 28 | ✅ Pass |
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| `test_unified_memory.py` | 59 | ✅ Pass |
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| `test_redis_memory.py` | 35 | ✅ Pass |
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| **Total** | **140** | ✅ Pass |
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---
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## Installation
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These features are included in `empathy-framework>=2.3.0`:
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```bash
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pip install empathy-framework --upgrade
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```
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---
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## Architecture Integration
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```
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┌─────────────────────────────────────────────────────────────────────────┐
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│ EMPATHY MEMORY ARCHITECTURE │
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├─────────────────────────────────────────────────────────────────────────┤
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│ │
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│ ┌─────────────────────────────────────────────────────────────────┐ │
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│ │ COORDINATOR (Premium) │ │
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│ │ • Task decomposition • Result synthesis │ │
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│ │ • Budget: 50k tokens • Model: Opus/o1 │ │
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│ └──────────────────────────────┬──────────────────────────────────┘ │
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│ │ │
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│ ┌───────────────────────┼───────────────────────┐ │
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│ ▼ ▼ ▼ │
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│ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │
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│ │ Sub-Agent 1 │ │ Sub-Agent 2 │ │ Sub-Agent 3 │ │
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│ │ (Capable) │ │ (Capable) │ │ (Capable) │ │
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│ │ Budget: 40k │ │ Budget: 40k │ │ Budget: 40k │ │
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│ └──────┬──────┘ └──────┬──────┘ └──────┬──────┘ │
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│ │ │ │ │
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│ └───────────────────────┼───────────────────────┘ │
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│ │ │
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│ ▼ │
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│ ┌─────────────────────────────────────────────────────────────────┐ │
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│ │ CONVERSATION SUMMARY INDEX │ │
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│ │ (Redis - Short-Term Memory) │ │
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│ │ session:{id}:summary ──► Decisions, topics, files │ │
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│ │ session:{id}:timeline ──► Ordered events │ │
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│ │ topic:{name} ──► Session index │ │
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│ └──────────────────────────────┬──────────────────────────────────┘ │
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│ │ │
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│ ▼ │
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│ ┌─────────────────────────────────────────────────────────────────┐ │
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│ │ CLAUDE.md SYNC │ │
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│ │ (.claude/rules/empathy/) │ │
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│ │ bug-patterns.md, security-decisions.md, tech-debt-hotspots.md │ │
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│ └─────────────────────────────────────────────────────────────────┘ │
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│ │
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└─────────────────────────────────────────────────────────────────────────┘
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```

‎empathy_llm_toolkit/cli/__init__.py‎

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"""
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Empathy Framework CLI Tools
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Commands:
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- empathy sync-claude: Sync patterns to .claude/rules/empathy/
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Copyright 2025 Smart AI Memory, LLC
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Licensed under Fair Source 0.9
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"""

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