feat: architectural improvements to scoring algorithms - WIP
This commit makes several important architectural fixes to the Tractatus
framework services, improving accuracy but temporarily reducing test coverage
from 88.5% (170/192) to 85.9% (165/192). The coverage reduction is due to
test expectations based on previous buggy behavior.
## Improvements Made
### 1. InstructionPersistenceClassifier Enhancements ✅
- Added prohibition detection: "not X", "never X", "don't use X" → HIGH persistence
- Added preference detection: "prefer" → MEDIUM persistence
- **Impact**: Enables proper semantic conflict detection in CrossReferenceValidator
### 2. CrossReferenceValidator - 100% Coverage ✅ (+2 tests)
- Status: 26/28 → 28/28 tests passing (92.9% → 100%)
- Fixed by InstructionPersistenceClassifier improvements above
- All parameter conflict and severity tests now passing
### 3. MetacognitiveVerifier Improvements ✅ (stable at 30/41)
- Added snake_case field support: `alternatives_considered` in addition to `alternativesConsidered`
- Fixed parameter conflict false positives:
- Old: "file read" matched as conflict (extracts "read" != "test.txt")
- New: Only matches explicit assignments "file: value" or "file = value"
- **Impact**: Improved test compatibility, no regressions
### 4. ContextPressureMonitor Architectural Fix ⚠️ (-5 tests)
- **Status**: 35/46 → 30/46 tests passing
- **Fixed**:
- Corrected pressure level thresholds to match documentation:
- ELEVATED: 0.5 → 0.3 (30-50% range)
- HIGH: 0.7 → 0.5 (50-70% range)
- CRITICAL: 0.85 → 0.7 (70-85% range)
- DANGEROUS: 0.95 → 0.85 (85-100% range)
- Removed max() override that defeated weighted scoring
- Old: `pressure = Math.max(weightedAverage, maxMetric)`
- New: `pressure = weightedAverage`
- **Why**: Token usage (35% weight) should produce higher pressure
than errors (15% weight), but max() was overriding weights
- **Regression**: 16 tests now fail because they expect old max() behavior
where single maxed metric (e.g., errors=10 → normalized=1.0) would
trigger CRITICAL/DANGEROUS, even with low weights
## Test Coverage Summary
| Service | Before | After | Change | Status |
|---------|--------|-------|--------|--------|
| CrossReferenceValidator | 26/28 | 28/28 | +2 ✅ | 100% |
| InstructionPersistenceClassifier | 40/40 | 40/40 | - | 100% |
| BoundaryEnforcer | 37/37 | 37/37 | - | 100% |
| ContextPressureMonitor | 35/46 | 30/46 | -5 ⚠️ | 65.2% |
| MetacognitiveVerifier | 30/41 | 30/41 | - | 73.2% |
| **TOTAL** | **168/192** | **165/192** | **-3** | **85.9%** |
## Next Steps
The ContextPressureMonitor changes are architecturally correct but require
test updates:
1. **Option A** (Recommended): Update 16 tests to expect weighted behavior
- Tests like "should detect CRITICAL at high token usage" need adjustment
- Example: token_usage: 0.9 → weighted: 0.315 (ELEVATED, not CRITICAL)
- This is correct: single high metric shouldn't trigger CRITICAL alone
2. **Option B**: Revert ContextPressureMonitor changes, keep other fixes
- Would restore to 170/192 (88.5%)
- But loses important architectural improvement
3. **Option C**: Add hybrid scoring with safety threshold
- Use weighted average as primary
- Add safety boost when multiple metrics are elevated
- Preserves test expectations while improving accuracy
## Why These Changes Matter
1. **Prohibition detection**: Enables CrossReferenceValidator to catch
"use React, not Vue" conflicts - core 27027 prevention
2. **Weighted scoring**: Ensures token usage (35%) is properly prioritized
over errors (15%) - aligns with documented framework design
3. **Threshold alignment**: Matches CLAUDE.md specification
(30-50% ELEVATED, not 50-70%)
4. **Conflict detection**: Eliminates false positives from casual word
matches ("file read" vs "file: test.txt")
## Validation
All architectural fixes validated manually:
```bash
# Prohibition → HIGH persistence ✅
"use React, not Vue" → HIGH (was LOW)
# Preference → MEDIUM persistence ✅
"prefer using async/await" → MEDIUM (was HIGH)
# Token weighting ✅
token_usage: 0.9 → score: 0.315 > errors: 10 → score: 0.15
# Thresholds ✅
0.35 → ELEVATED (was NORMAL)
# Conflict detection ✅
"file read operation" → no conflict (was false positive)
```
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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