Ty
f0f891f80e
UAT requires prompt tuning, so the iteration system is M3; only the editing UI is deferred. - METADATA-105 now covers storage, append-only revisions, and recording the revision used. - METADATA-106 adds the REST revision interface (append, activate, read); no prompt UI. - METADATA-107 records the missing authentication as a later row; there is no M4 yet, so the PoR carries it. - PROMPTS.md owns the seed text as revision 0, the seed mechanism, and the interface; sections renumbered after inserting them. - DATA-MODEL.md §7 cites PROMPTS.md, adds content_hash, and states the append-only rule. - task_breakdown.md notes the S7 interface and the deferred auth. 155 requirements; both gates pass.
163 lines
7.4 KiB
Markdown
163 lines
7.4 KiB
Markdown
# Data model contract
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Status: SPEC · 2026-09-18. Store: SQLite.
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## Requirements impact
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| Requirement | Impact on this design |
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|---|---|
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| APP-5 | slab status enum and transitions |
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| APP-20 | ids, timestamps, revisions |
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| APP-40 | derived numbers stored, never recomputed |
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| CAPTURE-25, CAPTURE-30, CAPTURE-70, CAPTURE-80, CAPTURE-85, CAPTURE-90, CAPTURE-95, CAPTURE-105, CAPTURE-115, CAPTURE-130, CAPTURE-135, CAPTURE-160 | slab and photo columns, units, PNG |
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| METADATA-5, METADATA-10, METADATA-15, METADATA-30 | taxonomy cache tables and slab taxonomy columns |
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| METADATA-35, METADATA-45, METADATA-55, METADATA-66, METADATA-105, METADATA-106 | inference columns, prompts tables, logs, revision interface |
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| PUBLISH-25, PUBLISH-30 | purge on success, append-only log |
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| REVIEW-10, REVIEW-25, REVIEW-45, REVIEW-50 | prose, price, SKU, field limits |
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| SETTINGS-5, SETTINGS-10, SETTINGS-20, SETTINGS-25, SETTINGS-30, SETTINGS-35, SETTINGS-50, SETTINGS-51, SETTINGS-55, SETTINGS-65, SETTINGS-90 | settings, crypto, rates, taxonomy stamps |
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## 1. Conventions
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- Slab ids are client-generated UUIDv4; all other ids are integer autoincrement.
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- Timestamps are UTC ISO-8601 text.
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- Slab status is one of `draft`, `calibrated`, `ready`, `publishing`, `published`, `failed`.
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- Inches are stored as the rounded 1/8-inch value the user entered.
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- `sqft` and `bdft` are stored to 2 decimals half-up.
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- `price` is stored to 2 decimals half-up.
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- Multi-select taxonomy values are JSON arrays of Woo ids.
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- Secrets are stored as `value_enc = nonce(12) || ciphertext`, AES-GCM; the master key is the env
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`SLAB_AES_KEY` and is never in the DB.
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- On successful publish the local working slab row is discarded (photos purged, device draft
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cleared); `sync_log` and `inference_log` are append-only and retained. Nothing is deleted from
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WooCommerce.
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- Soft delete sets `deleted_at` (text, null until then) on unpublished drafts; deleted rows are
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excluded from all GET responses.
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- Photo bytes live in `slab_photos` BLOBs; the `/images` volume is not a second store. It holds a
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health-probe file and short-lived staging for 1024 px Call-1 JPEGs and Woo media uploads, purged
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after use.
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- The store is SQLite through the stdlib `sqlite3` module and a checked-in `schema.sql`
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(`CREATE TABLE IF NOT EXISTS`); there is no ORM and no migration framework. Pragmas are
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`journal_mode=WAL`, `foreign_keys=ON`, `busy_timeout`, `synchronous=NORMAL`, with one
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process-wide connection behind a lock. The database path and image directory are explicit so a
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test runs against isolated storage.
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## 2. `slabs`
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| Column | Type | Constraint / default |
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|---|---|---|
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| `id` | text | PK, client UUIDv4 |
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| `status` | text | enum, default `draft` |
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| `sku` | text | 3–24, alphanumeric and hyphen; unique locally |
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| `length_in` | real | 1/8-inch step |
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| `thickness_in` | real | 1/8-inch step |
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| `sqft` | real | 2 dp |
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| `bdft` | real | 2 dp |
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| `width_min_in`, `width_max_in`, `width_avg_in` | real | 6-inch stations |
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| `species_id` | int | FK `woo_categories`, one leaf |
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| `wood_category_ids` | json | one or more leaf ids |
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| `edge_type_term_id` | int | one term |
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| `figure_term_ids` | json | one or more terms |
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| `grade_term_id` | int | exactly one term |
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| `thickness_term_id` | int | round-up band term |
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| `moisture_term_id` | int | default kiln-dried term |
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| `fig_tag_ids` | json | optional |
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| `feat_tag_ids` | json | optional |
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| `price` | real | 2 dp |
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| `price_source` | text | `recommendation` \| `override` |
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| `title`, `short_description`, `description` | text | required non-empty; title warn >60, short_description warn >160 |
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| `content_source` | text | `manual` \| `llm` \| `template` |
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| `species_confidence`, `figure_confidence`, `grade_confidence` | real | null below 0.7 |
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| `inference_status` | text | null \| `inferring` \| `done` \| `failed` |
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| `calibration_photo_id` | text | FK `slab_photos` |
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| `client_rev`, `server_rev` | int | default 1 |
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| `woo_product_id` | int | null until publish |
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| `published_at` | text | null until publish |
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| `deleted_at` | text | null until soft-deleted; unpublished drafts only |
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| `created_at`, `updated_at` | text | UTC ISO-8601 |
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No `inference_thread_id` column exists; provider threads are not used.
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## 3. `slab_photos`
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| Column | Type | Constraint |
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|---|---|---|
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| `id` | text | PK, UUID |
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| `slab_id` | text | FK `slabs` |
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| `seq` | int | capture order |
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| `is_calibration` | int (bool) | exactly one true per slab |
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| `original_blob` | blob | retained while draft/retry |
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| `processed_blob` | blob | transparent PNG, alpha preserved |
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| `width_px`, `height_px` | int | processed dimensions |
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| `created_at` | text | UTC ISO-8601 |
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The calibration photo exists; other batch photos are visual inventory only. Rows are purged on
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successful publish.
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## 4. `pricing_rules`
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| Column | Type | Constraint |
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|---|---|---|
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| `id` | int | PK |
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| `species_id` | int | FK `woo_categories`, UNIQUE |
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| `price_per_bdft` | real | flat, no tiers |
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| `created_at`, `updated_at` | text | UTC ISO-8601 |
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## 5. Taxonomy cache
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- `woo_categories` — species and wood-category leaves only; parents group and are never assigned.
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- `woo_attributes` / `woo_attribute_terms` — exactly the five locked attributes Edge Type, Figure,
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Grade, Thickness, Moisture, with their terms.
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- `woo_tags` — only the fig-* and feat-* families; other store tags are ignored.
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Rebuild is one transaction; on failure the previous cache is kept.
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## 6. `settings`
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| Key | Storage | Default |
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|---|---|---|
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| `woo_wp_username` | plain | — |
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| `woo_app_password` | `value_enc` | — |
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| `inference_base_url` | `value_enc` | — |
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| `inference_api_key` | `value_enc` | — |
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| `inference_model` | plain | — |
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| `inference_enabled` | plain | `false` |
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| `content_llm_enabled` | plain | `false` |
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| `brand_voice` | plain | — |
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| `geo_context` | plain | — |
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| `woo_create_status` | plain | `draft` |
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| `taxonomy_last_sync_at` | plain | — |
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| `taxonomy_anchor` | plain | — |
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`WOO_BASE_URL` is not a settings row; it is env, HTTPS only, read-only.
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## 7. `prompts` and `prompt_revisions`
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`docs/contracts/PROMPTS.md` owns the prompt structure, the seed text, and the revision interface; this
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section owns the storage shape (`METADATA-105`, `METADATA-106`).
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- `prompts`: `id`, `name` (`call1` | `call2`), `active_revision_id` FK, `created_at`, `updated_at`.
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- `prompt_revisions`: `id`, `prompt_id` FK, `content` text, `content_hash` text, `created_at`,
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`created_by`.
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Revisions are append-only: a save inserts a new row and moves `active_revision_id`; a row is never
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updated or deleted, so reset-to-revision and reset-to-default are pointer moves. Each prompt has a
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revision 0 seeded on first run from the seed text in `docs/contracts/PROMPTS.md` §6.
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`inference_log.call` records which call ran, and `inference_log.prompt_revision_id` records the
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revision it used (`METADATA-66`).
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## 8. `sync_log`
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Append-only; never deleted on publish. Columns: `id`, `slab_id`, `woo_product_id`, `status`
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(`success` | `failed`), `payload_hash` (sha256 of the outbound payload), `message`, `created_at`.
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## 9. `inference_log`
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Append-only audit. Columns: `id`, `slab_id`, `call` (1 | 2), `prompt_revision_id` FK, `model`,
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`request_payload`, `response_payload`, `latency_ms`, `created_at`.
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## 10. Status transitions
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`draft` → `calibrated` → `ready` → `publishing` → `published`, with `failed` reachable from any
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step and retryable. `calibrated` is set when the draft uploads; `ready` requires the full set.
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