# Source-Grounded Assistant Corpus Coverage Inventory V01

Issue: #176

Date: 2026-06-30

## Purpose

This inventory implements the owner-approved narrowed #176 slice for corpus coverage and citation/source metadata.

It assesses the current assistant corpus generation and outputs before any source-grounded chat UX, runtime, provider, Cloudflare, upload, source-registry, approved-source-set, or package-authority work.

## Owner-Approved Narrowed Scope

The approved first slice is:

- perform corpus coverage inventory
- make generator-only minimal additions for already-approved human-readable package sources only if gaps are proven
- keep the slice focused on corpus coverage and citation/source metadata
- preserve citation-first and not-found behavior

This slice is not source-grounded chat UX work, runtime work, provider/model configuration work, Cloudflare work, upload or paste-source work, source registry work, approved source-set work, or package-authority work.

## Reviewed Inputs

| Input | Inventory use |
|---|---|
| `scripts/build_context_pack.py` | Corpus generator source families, supplemental sources, row schema, and mirror generation. |
| `context-pack/assistant_corpus.jsonl` | Root assistant corpus rows and source metadata. |
| `context-pack/manifest.json` | Root context-pack source commit and generated file surface. |
| `docs/context-pack/assistant_corpus.jsonl` | Published mirror assistant corpus rows. |
| `docs/context-pack/manifest.json` | Published mirror context-pack metadata. |
| `docs/product-architecture/architecture_explainer_source_inventory.md` | Existing source inventory and corpus inclusion posture. |
| `validation/scripts/check_context_pack.py` | Context-pack structural validation. |
| `validation/scripts/check_minimal_external_chat_proof.py` | Source-grounded proof validation, source-family coverage, citation target, and refusal behavior checks. |
| `docs/product-architecture/source_grounded_assistant_corpus_ux_residual_scope_review_v01.md` | Owner-approved narrowed implementation guidance for #176. |

## Corpus Coverage Findings

The current assistant corpus has 2,206 rows before this inventory note is included. The represented required families are:

| Required source family | Rows | Source paths | Citation identity posture | Inventory finding |
|---|---:|---:|---|---|
| Shared Core | 15 | 1 | `artifact_section` | Represented with section IDs, source line spans, reader targets, and citation identity. |
| AI Capability Discipline | 149 | 1 | `artifact_section` | Represented with section IDs, source line spans, reader targets, and citation identity. |
| MLL WESS Build Readiness | 84 | 2 | `artifact_section`, `public_html_section` | Represented through package Markdown and public HTML sections. |
| Enterprise Architecture Review Assistant | 595 | 2 | `artifact_section`, `public_html_section` | Represented through package Markdown and public HTML sections. |
| Playbook Map / Relationship Map | 10 | 1 | `source_section` | Represented through approved package Markdown. |
| Context-Pack Notes | 106 | 10 | `source_section` | Represented as source-grounded context-pack notes and related generated guidance. |
| Source-Grounded Assistant Notes | 52 | 3 | `source_section` | Represented with approved source-grounded assistant design notes. |
| Source-Grounded Assistant Architecture | 1,127 | 66 | `source_section` | Represented with architecture notes, runbooks, and selected public-safe receipts. |
| Artifact And Package Metadata | 26 | 4 | `metadata_file` | Represented with package, artifact, context-pack manifest, and source-map metadata. |

Every assistant-consumable row is expected to carry:

- `citation_identity`
- `source_family`
- `source_type`
- `artifact_id`
- `artifact_title`
- `section_id`
- `section_title`
- `source_path`
- `source_start_line`
- `source_end_line`
- `context_pack_path`
- `reader_target`
- `source_claim_boundary`
- `source_quality_status`
- `source_legitimacy_posture`
- `ai_adjudication_readiness`
- `approved_source`

## Generator-Only Additions

No additional already-approved human-readable package source was added in this slice because the inventory did not prove a coverage gap.

The only generator metadata addition is this inventory note itself as `evidence_admin` source-grounded architecture evidence. It records the deterministic coverage finding and does not add a new package authority source, source registry entry, approved source-set entry, runtime source, current/public source, uploaded source, or default-answer package artifact.

## Source Family Coverage Summary

| Family | Coverage posture | Residual risk |
|---|---|---|
| Shared Core | Covered. | Small row count reflects compact source, not a proven omission. |
| AI Capability Discipline | Covered. | No new package source entry needed. |
| MLL WESS Build Readiness | Covered. | Public HTML rows supplement package Markdown for deeper section coverage. |
| Enterprise Architecture Review Assistant | Covered. | Public HTML rows supplement package Markdown for deeper section coverage. |
| Playbook Map / Relationship Map | Covered. | Coverage is compact and aligned to the relationship-map source. |
| source-grounded context-pack notes | Covered. | Generated notes remain governed context-pack material, not independent policy. |
| Citation metadata and source family coverage | Covered. | Validator checks preserve row fields, line spans, source paths, reader targets, and citation identity. |

## Validation Additions

`validation/scripts/check_source_grounded_assistant_corpus_coverage_inventory.py` validates:

- root and published assistant corpus mirrors match
- required source families are represented
- required package source paths remain present
- assistant rows retain usable citation/source identity
- source line spans and reader targets remain present
- this inventory note is `evidence_admin`, not default-answer material
- no generator-only package additions were needed
- boundary confirmations remain explicit in this note, JSON companion, receipt, and validation wiring

## Boundary Confirmations

No source-grounded chat UX change was implemented.

No runtime behavior was changed.

No provider/model configuration was changed.

No Cloudflare configuration was changed.

No Cloudflare CLI or API was used.

No file upload or paste-source behavior was implemented.

No source registry was mutated.

No approved source set was mutated.

No package authority was changed.

Citation-first behavior remains required.

Not-found and refusal behavior remain required.

#269 was not reopened.

#271 was not reopened.

`codex-automerge` was not applied.

## Provider-Backed Smoke Posture

Provider-backed smoke is skipped for this slice because the owner-approved scope does not require provider-backed execution unless credentials and environment are available. This inventory is generator and validation work over repo-controlled corpus artifacts.

## Outcome

The corpus coverage inventory found that the required already-approved human-readable package families are represented with usable section or chunk metadata and citation identity. The slice therefore records no new generator-only package source additions.