---
id: T01
parent: S07
milestone: M014
provides: []
requires: []
affects: []
key_files: ["backend/schemas.py", "backend/pipeline/stages.py", "backend/pipeline/qdrant_client.py", "backend/search_service.py", "backend/pipeline/test_section_embedding.py"]
key_decisions: ["Removed Qdrant type_filter for topics scope so technique_section results appear in semantic search", "Section title field carries page title; section_heading is separate for frontend display"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "22 unit tests pass covering slugify, deterministic UUIDs, QdrantManager section methods, and stage 6 logic. Slugify assertion, schema grep, and search_service grep all pass."
completed_at: 2026-04-03T02:12:50.320Z
blocker_discovered: false
---

# T01: Added per-section embedding to stage 6 for v2 technique pages with section-level Qdrant upsert, search enrichment, and schema fields

> Added per-section embedding to stage 6 for v2 technique pages with section-level Qdrant upsert, search enrichment, and schema fields

## What Happened
---
id: T01
parent: S07
milestone: M014
key_files:
  - backend/schemas.py
  - backend/pipeline/stages.py
  - backend/pipeline/qdrant_client.py
  - backend/search_service.py
  - backend/pipeline/test_section_embedding.py
key_decisions:
  - Removed Qdrant type_filter for topics scope so technique_section results appear in semantic search
  - Section title field carries page title; section_heading is separate for frontend display
duration: ""
verification_result: passed
completed_at: 2026-04-03T02:12:50.320Z
blocker_discovered: false
---

# T01: Added per-section embedding to stage 6 for v2 technique pages with section-level Qdrant upsert, search enrichment, and schema fields

**Added per-section embedding to stage 6 for v2 technique pages with section-level Qdrant upsert, search enrichment, and schema fields**

## What Happened

Added section_anchor and section_heading fields to SearchResultItem schema. Implemented _slugify_heading() matching the frontend's slugify. Added delete_sections_by_page_id() and upsert_technique_sections() to QdrantManager with deterministic UUIDs. Extended stage 6 with v2 section embedding block that handles all failure modes non-blockingly. Added technique_section branch to _enrich_qdrant_results() and removed Qdrant type filter for topics scope so section results appear in semantic search.

## Verification

22 unit tests pass covering slugify, deterministic UUIDs, QdrantManager section methods, and stage 6 logic. Slugify assertion, schema grep, and search_service grep all pass.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `PYTHONPATH=backend python -m pytest backend/pipeline/test_section_embedding.py -v` | 0 | ✅ pass | 1400ms |
| 2 | `PYTHONPATH=backend python -c "from pipeline.stages import _slugify_heading; assert _slugify_heading('Grain Position Control') == 'grain-position-control'"` | 0 | ✅ pass | 500ms |
| 3 | `grep -q 'section_anchor' backend/schemas.py` | 0 | ✅ pass | 50ms |
| 4 | `grep -q 'technique_section' backend/search_service.py` | 0 | ✅ pass | 50ms |


## Deviations

Corrected slugify expectation: 'LFO Routing & Modulation' produces 'lfo-routing-modulation' not 'lfo-routing---modulation'. Removed Qdrant type_filter for topics scope to include technique_section results.

## Known Issues

None.

## Files Created/Modified

- `backend/schemas.py`
- `backend/pipeline/stages.py`
- `backend/pipeline/qdrant_client.py`
- `backend/search_service.py`
- `backend/pipeline/test_section_embedding.py`


## Deviations
Corrected slugify expectation: 'LFO Routing & Modulation' produces 'lfo-routing-modulation' not 'lfo-routing---modulation'. Removed Qdrant type_filter for topics scope to include technique_section results.

## Known Issues
None.
