# Session Log: 2026-02-07 (Afternoon)
## Summary
Completed Phase 1 (Pack Pipeline + Seed Content). Full authoring → runtime pipeline validated.
## Accomplishments
### 1. Document Management Infrastructure
- Created `docs/references/` structure with CATALOG.md
- Downloaded ACS General Handbook (ACS-GEN-001) locally
- Established provenance tracking for all source documents
- Added theoretical foundations (semiotic DQ literature)
### 2. Theoretical Foundation
- Enhanced `pragmatics_vocabulary.md` with literature citations
- Created `semiotic_dq_foundations.md` validating our architecture
- Key insight: existing tools cover syntax/semantics, **nothing covers pragmatics**
### 3. ACS Pragmatics Extraction
- Extracted 17 context items from ACS handbook
- Categorized by latitude (5 none, 7 narrow, 4 wide, 1 full)
- Created 6 thread relationships between related items
- Source citations included (chapter, page numbers)
### 4. Full Pipeline Validation
- Created `staging/acs.json` (version-controlled source of truth)
- Loaded into Neo4j `pragmatics` database (authoring environment)
- Validated thread traversal queries work
- Verified Neo4j → JSON export round-trip
- Compiled to `packs/acs.db` (SQLite)
- Tested PackLoader reads compiled pack correctly
## Key Decisions
1. **ADR-001**: Neo4j for authoring, SQLite for runtime
2. **ADR-002**: Grounding layer, not RAG (LLM knows 90%, packs provide citations/thresholds)
## Tech Debt Identified
| Item | Notes |
|------|-------|
| Manual extraction | Need LLM-assisted bulk extraction from PDFs |
| Manual Neo4j loading | Need import script |
| Neo4j → JSON export | Need automated script |
| CPS pack | Needed for user's parallel project |
## Extraction Stopping Criteria
**Extract:** Things LLM would confidently get wrong without
- Hard constraints (data doesn't exist below 65K)
- Specific thresholds (CV > 40%)
- Non-obvious comparison rules (overlapping periods)
**Skip:** Things LLM already handles
- General descriptions of what ACS is
- Navigation/UI instructions
- Historical background
## Files Created/Modified
```
docs/
├── architecture/
│ └── implementation_schedule.md (updated)
├── decisions/
│ ├── ADR-001-neo4j-authoring-sqlite-runtime.md (new)
│ └── ADR-002-grounding-not-rag.md (new)
├── design/
│ └── pragmatics_vocabulary.md (enhanced)
├── references/
│ ├── CATALOG.md (new)
│ ├── acs/
│ │ └── acs_general_handbook_2020.pdf (downloaded)
│ └── theory/
│ └── semiotic_dq_foundations.md (new)
staging/
└── acs.json (new - 17 contexts, 6 threads)
packs/
└── acs.db (compiled)
```
## Next Steps
1. **Phase 2: Pragmatics Engine** - Query routing, context injection
2. Build extraction automation (future, not blocking)
3. CPS pack for parallel project (future)
## Context Window Note
Offloaded grunt work to Claude Code to preserve session context. Pattern:
- Design/decisions here
- Execution instructions → Claude Code
- Verification back here
