Why:
- Implements plan 001 Phase 3's upload orchestration.
Changes:
- ObjectStorage port and MinIO adapter, thread-offloaded per ADR-0017.
- Tenant-scoped repositories for api_keys, source_files, ingestion_jobs.
- upload_source_file implementing the two-transaction shape with
(tenant_id, domain, content_sha256) idempotency.
Impact:
- This phase stores bytes only -- chunks_indexed is always 0 until
Phase 4/5 add parsing/embedding.
Why:
- The package exposed 8 modules directly, pushing source-type dispatch and
the ADR-0017 thread-offload obligation onto every caller.
Changes:
- Add parse_and_chunk_document as the sole public entry point.
- Demote the individual parsers to internal/test-only.
Adds src/application/ingestion/ -- Persian normalization, DOCX body
walk with structural data/layout table classification, CSV/XLSX row
rendering, and fixed-size token chunking (cl100k_base, 400/60/512) --
as pure functions per ADR-0015, tested against real production
documents (asia_data_sample, kept out of the repo). ADR-0018 records
where this diverges from ADR-0004 (fixed-size default, no invented
headings/tree, structural table classification, header-provable
labeling only). Plan 001's scope line is corrected from CSV-only to
DOCX/XLSX/CSV, and CLAUDE.md's stale project-status paragraph is
updated to match current implementation state.
