docs(03-02): complete hardware tier detection plan

Tasks completed: 3/3
- Resource module structure with proper exports
- Configurable hardware tier definitions in YAML
- HardwareTierDetector class with classification logic

SUMMARY: .planning/phases/03-resource-management/03-02-SUMMARY.md

.planning/phases/03-resource-management/03-02-SUMMARY.md

@@ -0,0 +1,107 @@
+---
+phase: 03-resource-management
+plan: 02
+subsystem: resource-management
+tags: [yaml, hardware-detection, tier-classification, model-selection]
+
+# Dependency graph
+requires:
+  - phase: 03-01
+    provides: enhanced ResourceMonitor with pynvml GPU support
+provides:
+  - Hardware tier detection and classification system
+  - Configurable tier definitions via YAML
+  - Model recommendation engine based on hardware capabilities
+  - Performance characteristics mapping for each tier
+affects: [03-03, 03-04, model-interface, conversation-engine]
+
+# Tech tracking
+tech-stack:
+  added: [yaml, pathlib, hardware-tiering]
+  patterns: [configuration-driven-hardware-detection, tier-based-model-selection]
+
+key-files:
+  created: [src/resource/__init__.py, src/resource/tiers.py, src/config/resource_tiers.yaml]
+  modified: []
+
+key-decisions:
+  - "Three-tier system: low_end, mid_range, high_end provides clear hardware classification"
+  - "YAML-driven configuration enables threshold adjustments without code changes"
+  - "Integration with existing ResourceMonitor leverages enhanced GPU detection"
+
+patterns-established:
+  - "Pattern: Configuration-driven hardware classification using YAML thresholds"
+  - "Pattern: Tier-based model selection with fallback mechanisms"
+  - "Pattern: Performance characteristic mapping per hardware tier"
+
+# Metrics
+duration: 4min
+completed: 2026-01-27
+---
+
+# Phase 3: Hardware Tier Detection Summary
+
+**Hardware tier classification system with configurable YAML definitions and intelligent model mapping**
+
+## Performance
+
+- **Duration:** 4 min
+- **Started:** 2026-01-27T23:29:04Z
+- **Completed:** 2026-01-27T23:32:51Z
+- **Tasks:** 3
+- **Files modified:** 3
+
+## Accomplishments
+
+- Created resource management module with proper exports and documentation
+- Implemented configurable hardware tier definitions with comprehensive thresholds
+- Built HardwareTierDetector class with intelligent classification logic
+- Established model recommendation system based on detected capabilities
+- Integrated with existing ResourceMonitor for real-time hardware monitoring
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Create resource module structure** - `5d93e97` (feat)
+2. **Task 2: Create configurable hardware tier definitions** - `0b4c270` (feat)
+3. **Task 3: Implement HardwareTierDetector class** - `8857ced` (feat)
+
+**Plan metadata:** (to be committed after summary)
+
+## Files Created/Modified
+
+- `src/resource/__init__.py` - Resource management module initialization with exports
+- `src/config/resource_tiers.yaml` - Comprehensive tier definitions with thresholds and performance characteristics
+- `src/resource/tiers.py` - HardwareTierDetector class implementing tier classification logic
+
+## Decisions Made
+
+- Three-tier classification system provides clear boundaries: low_end (1B-3B), mid_range (3B-7B), high_end (7B-70B)
+- YAML configuration enables runtime adjustment of thresholds without code changes
+- Integration with existing ResourceMonitor leverages enhanced GPU detection from Plan 01
+- Conservative fallback to low_end tier ensures stability on uncertain systems
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None - all components implemented and verified successfully.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+Hardware tier detection system complete and ready for integration with:
+- Proactive scaling system (Plan 03-03)
+- Resource personality communication (Plan 03-04)
+- Model interface selection system
+- Conversation engine optimization
+
+---
+*Phase: 03-resource-management*
+*Completed: 2026-01-27*