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Category-Based Delegation Implementation

Status: ✅ COMPLETE

Implementation of semantic category-based delegation system that layers on top of the existing ComplexityTier model routing system.

What Was Implemented

Core Files

  1. src/features/delegation-categories/types.ts

    • DelegationCategory type with 7 categories
    • CategoryConfig interface
    • ResolvedCategory interface
    • CategoryContext for resolution
    • ThinkingBudget type

  2. src/features/delegation-categories/index.ts

    • Category configuration definitions
    • resolveCategory() - Resolve category to full config
    • getCategoryForTask() - Auto-detection and explicit control
    • detectCategoryFromPrompt() - Keyword-based detection
    • enhancePromptWithCategory() - Prompt enhancement
    • Utility functions for tier/temperature/thinking budget extraction
    • Full TypeScript type exports

  3. src/features/delegation-categories/test-categories.ts

    • Comprehensive test suite
    • Tests all core functionality
    • Validates backward compatibility

  4. src/features/delegation-categories/README.md

    • Complete category reference
    • Usage examples
    • Architecture overview
    • Design decisions

  5. src/features/delegation-categories/INTEGRATION.md

    • Integration guide
    • Migration path
    • Best practices
    • Troubleshooting

Categories Implemented

Category Tier Temp Thinking Use Case
visual-engineering HIGH 0.7 high UI/design/frontend
ultrabrain HIGH 0.3 max Complex reasoning/debugging
artistry MEDIUM 0.9 medium Creative/innovative solutions
quick LOW 0.1 low Simple lookups/searches
writing MEDIUM 0.5 medium Documentation/technical writing
unspecified-low LOW 0.3 low Default for simple tasks
unspecified-high HIGH 0.5 high Default for complex tasks

Key Features

1. Layers on ComplexityTier

Categories don't bypass the tier system—they enhance it by providing semantic grouping.

const config = resolveCategory('ultrabrain');
// Returns: { tier: 'HIGH', temperature: 0.3, thinkingBudget: 'max', ... }

2. Auto-Detection

Keyword-based detection from task prompts.

const detected = getCategoryForTask({
  taskPrompt: 'Debug this complex race condition'
});
// Returns: { category: 'ultrabrain', tier: 'HIGH', ... }

3. Backward Compatible

Direct tier specification still works.

const config = getCategoryForTask({
  taskPrompt: 'Task',
  explicitTier: 'LOW'  // Still supported
});

4. Prompt Enhancement

Category-specific guidance appended to prompts.

const enhanced = enhancePromptWithCategory(
  'Create a login form',
  'visual-engineering'
);
// Appends UX/accessibility guidance

5. Full Configuration Bundle

Each category bundles tier + temperature + thinking budget.

const config = resolveCategory('artistry');
// config.tier = 'MEDIUM'
// config.temperature = 0.9 (high creativity)
// config.thinkingBudget = 'medium'

Verification

TypeScript Compilation

npx tsc --noEmit --project tsconfig.json

Result: ✅ No errors

Test Suite

npx tsx src/features/delegation-categories/test-categories.ts

Result: ✅ All tests pass

Test Coverage

  • ✅ Category resolution
  • ✅ Validation
  • ✅ Auto-detection from prompts
  • ✅ Explicit category control
  • ✅ Explicit tier control (backward compatibility)
  • ✅ Prompt enhancement
  • ✅ Utility functions (tier/temp/thinking extraction)
  • ✅ Tier mapping verification

Architecture

User Request
    │
    ├─> Explicit Category? ──> resolveCategory()
    │                              │
    ├─> Explicit Tier? ────────────┤
    │                              │
    └─> Auto-Detect ──────────────>│
         (keyword matching)        │
                                   ▼
                            CategoryConfig
                            { tier, temp, thinking }
                                   │
                                   ▼
                            ComplexityTier
                            (LOW/MEDIUM/HIGH)
                                   │
                                   ▼
                            Model Selection
                            (haiku/sonnet/opus)

Integration Points

Categories integrate with:

  1. Model Routing (src/features/model-routing/)

    • Categories resolve to ComplexityTier
    • Tier system handles model selection
    • Full compatibility maintained

  2. Task Delegation

    • Categories can be specified when delegating
    • Temperature and thinking budget configurable
    • Prompt enhancement optional

  3. Orchestration

    • Semantic routing based on categories
    • Category-to-agent mapping
    • Configuration bundling

Example Usage

Basic

import { resolveCategory } from './features/delegation-categories';

const config = resolveCategory('ultrabrain');
console.log(config.tier);         // 'HIGH'
console.log(config.temperature);  // 0.3

Auto-Detection

import { getCategoryForTask } from './features/delegation-categories';

const detected = getCategoryForTask({
  taskPrompt: 'Design a beautiful dashboard'
});
console.log(detected.category);  // 'visual-engineering'

Integration

import { getCategoryForTask } from './features/delegation-categories';
import { TIER_MODELS } from './features/model-routing';

const config = getCategoryForTask({ taskPrompt: 'Debug race condition' });
const model = TIER_MODELS[config.tier];  // claude-opus-4-6-20260205

delegateToAgent({
  prompt: taskPrompt,
  model,
  temperature: config.temperature,
});

Acceptance Criteria

  • ✅ DelegationCategory type defined with all 7 categories
  • ✅ resolveCategory() returns { tier, temperature, thinkingBudget, promptAppend }
  • ✅ Categories resolve to ComplexityTier (not bypass it)
  • ✅ Direct tier specification still works (backward compatible)
  • ✅ TypeScript compiles without errors

Files Created

src/features/delegation-categories/
├── types.ts                  # Type definitions
├── index.ts                  # Core implementation
├── test-categories.ts        # Test suite
├── README.md                 # Category reference
└── INTEGRATION.md            # Integration guide

Next Steps

To use categories in production:

  1. Import the module:

    import { getCategoryForTask, resolveCategory } from './features/delegation-categories';

  2. Use in delegation:

    const config = getCategoryForTask({ taskPrompt, explicitCategory: 'ultrabrain' });
const model = TIER_MODELS[config.tier];

  3. Integrate with orchestrator:

    • Add category detection
    • Map categories to agents
    • Use temperature and thinking budget

  4. Monitor usage:

    • Track which categories are used most
    • Analyze model costs by category
    • Refine keyword detection

Design Decisions

  1. Layer, Don't Replace

    • Categories sit on top of tiers
    • Tier system remains authoritative for model selection
    • Full backward compatibility

  2. Semantic Over Structural

    • "ultrabrain" is more intuitive than "HIGH tier + low temp + max thinking"
    • Categories bundle related configuration
    • Auto-detection uses semantic keywords

  3. Explicit Wins

    • Explicit category > auto-detection
    • Explicit tier > category > auto-detection
    • User control always preserved

  4. Configuration Bundle

    • Each category defines full configuration
    • No partial configs or inheritance
    • Clear, predictable behavior

Performance

  • Auto-detection: O(n×m) where n=categories, m=keywords (~50 keywords total)
  • Resolution: O(1) hash map lookup
  • Memory: ~5KB for category configs
  • Cost Impact: None (categories map to existing tiers)

Future Enhancements

Potential improvements:

  • User-defined custom categories
  • Category learning from successful delegations
  • Dynamic keyword weights
  • Agent-specific category defaults
  • Category analytics and recommendations

Implementation Date: 2026-01-21 TypeScript Version: 5.x Test Status: ✅ All Passing Compilation Status: ✅ Clean