WFDASH-WEBAPP/AGENTS.md

<!-- BEGIN:nextjs-agent-rules -->
# This is NOT the Next.js you know

This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in `node_modules/next/dist/docs/` before writing any code. Heed deprecation notices.
<!-- END:nextjs-agent-rules -->

<!-- BEGIN:pb-select-field-gotcha -->
# PocketBase select fields are not self-service

The `order_items.item_status` field is a `select` with a fixed list of
values. If you want to set a new value (e.g. `delivery_note` for the
new delivery-note flow), you must add it to the schema in the PB admin
**first** — the API will 500 with "Failed to update record." otherwise.
The local `pb-exports/pb_schema-2.json` is a snapshot for reference
only; the source of truth is the running PB instance.

If a new code path sets a select value that doesn't exist yet, ask the
user to add it via the PB admin before debugging the API. They do this
manually (it's a UI-only change in the PB admin).
<!-- END:pb-select-field-gotcha -->

<!-- BEGIN:pb-attachments-pattern -->
# Reuse existing multi-file fields for new attachment types

The `order_items` collection has a multi-file field `order_item_attachements`
(`maxSelect: 10`, accepts any MIME). When adding a new document type
to attach to an order item (e.g. delivery note PDF), upload the file
to this field rather than creating a new attachment collection. The
operator queries by some key field on the item (e.g.
`delivery_note_number`) to find the items, then reads the attachments
off each item.

Pattern in code:
1. POST endpoint: generate the PDF, upload via multipart/form-data
   using the `order_item_attachements` field on each item in the group
2. GET endpoint: query `order_items` by the key field, find a file
   whose name matches the expected pattern (e.g. `DN26071401.pdf`),
   stream the bytes back via PB's `/api/files/...` URL
3. Stable filename per document type so the retrieval side can
   disambiguate from other attachments on the same item

**Always ADD, never replace:** a PocketBase file PATCH under the bare
field name replaces the whole list — it deleted a driver's photo on
2026-10-19. Build uploads with `addAttachmentForm()` from
`src/lib/server/order-item-files.ts` (`order_item_attachements+`, and
`-` only for the same document's older copies), and find a file by name
with `pickStoredCopy()`, never by position.
<!-- END:pb-attachments-pattern -->

<!-- BEGIN:file-url-paths -->
# File URLs go through `/api/v1/files/`, never `/api/files/`

The WFDASH file-serving proxy lives at
`/api/v1/files/{collection}/{recordId}/{filename}` (route file:
`src/app/api/v1/files/[collection]/[recordId]/[filename]/route.ts`).
Every `<a href={...}>` and every fetch from a client component that
opens a repair/quote/order attachment must use the `/api/v1/` prefix.

`/api/files/{collection}/{recordId}/{filename}` (no `v1/`) 404s —
that's the *PocketBase* convention, not a route in this app. The
PB instance serves files at that path, and the WFDASH proxy
forwards to it server-side, but a client that points directly at
`/api/files/...` gets the Next.js 404 page.

**Gotcha:** PocketBase record responses (e.g. `record.delivery_note`
as a `string[]` of filenames) sometimes come back as fully-qualified
PB URLs like `http://pb-host/api/files/...` — those should be
re-written to `/api/v1/files/...` on the client before rendering.
The existing detail page builds the path from scratch from the
record id + filename, which sidesteps the issue. Don't blindly
trust the URL PB hands back.

The `src/app/api/invoicing/delivery-note-pdf/route.test.ts` test
file intentionally matches `/api/files/...` in an expect — that's
asserting the *raw PB response* shape, not the URL the client
should use. Different concern.
<!-- END:file-url-paths -->

<!-- BEGIN:data-layer-discipline -->
# Data access layer discipline

The app has two coexisting data layers:

- **Legacy**: `src/lib/pb-helpers.ts` — used directly by Server Components
  under `src/app/(app)/**/page.tsx` and form components.
- **Current**: `src/lib/server/*-service.ts` — exposed via `/api/v1/*` route
  handlers and `/api/mcp`, used by the agent API and external integrations.

Both layers read the same PocketBase collections. Pick the right one
depending on what you're doing.

## Rules

**For new endpoints / features**: put business logic in
`src/lib/server/<feature>-service.ts` and expose it via a thin
`src/app/api/v1/<feature>/<op>/route.ts`. Do NOT extend `pb-helpers.ts`.

**For new pages / form components**: call `/api/v1/*` (or have the
Server Component call the corresponding `lib/server/*-service.ts`
function directly). Do NOT import from `pb-helpers.ts`.

**When touching a page that already uses `pb-helpers.ts`**: migrate its
data calls to the service layer in the same commit. One resource at a
time, no big-bang rewrites. Lowest-risk order: customers → orders →
quotes → suppliers → companies → everything else.

## How to spot you're reaching for the legacy layer

`pb-helpers.ts` is the file in question. Grep for it:

```bash
grep -rn 'from "@/lib/pb-helpers"' src/ --include="*.ts" --include="*.tsx"
```

Each hit is one caller to migrate when you're in the area.

## Migration cost indicator

A single page rewrite is typically: replace `getX(...)` import + call
with `await fetch('/api/v1/x?...')` (or a direct service-layer call),
then update the page to await. Half-day budget for 5 pages if no
weird cross-resource joins are involved.
<!-- END:data-layer-discipline -->
# Audit trail (`audit_log`) is written by a PB hook, not by app code

Every create / update / delete on `quotes`, `quote_items`,
`quote_attachments`, `orders`, `order_items` and `delivery_notes` is
recorded by `pocketbase/pb_hooks/audit_log.pb.js` (+ `audit_log_utils.js`)
into the `audit_log` collection. Don't add hand-written "audit" notes for
field changes — the hook already captures from → to per field.

Attribution: dashboard users writing straight to PB are credited
automatically. Server-side writes go through `getAdminPocketBase()`, which
attaches `X-Audit-*` headers from `src/lib/server/audit-context.ts` (the
browser forwards its PB token as `x-wfdash-auth`; PB verifies it). If a
server path knows the actor better than the request does (MCP `actor`
args), wrap it in `runWithAuditActor(...)`. n8n writes appear as
"Automation" unless the workflow sends `X-Audit-Actor-Name`.

Read side: `src/lib/server/audit-log-service.ts` →
`/api/v1/audit/{quote|order|delivery_note}/{id}` → `<AuditTimeline>`.
Noisy fields (search/AI/timers) are skipped via `IGNORED_FIELDS` in the
hook utils — add new auto-updated fields there.

Hooks deploy from git: commit changes in `pocketbase/pb_hooks/`, then
`npm run pb:hooks:publish` (pushes that folder to Forgejo `David/WFDASH-PBHOOKS`);
a VPS cron syncs the files listed in `DEPLOY` into the live PB hooks volume
(see `scripts/pb-hooks/README.md`). The audit hooks went live on 2026-10-17;
`audit_log` has no history from before that date.

# Giellie agent (`/giellie`) — tools come from the MCP, policy lives in one file

The sidebar "Giellie Agent" is a MiniMax chat agent (`src/lib/server/giellie-*.ts`,
routes under `/api/v1/giellie/*`, chats in the `giellie_chats` PB collection).
It calls the **same MCP handler** as Hermes/n8n (`src/app/api/mcp/route.ts`),
in-process — a new MCP tool is automatically available to Giellie.

- Safety lives in `src/lib/server/giellie-tool-policy.ts`: `*.delete` and secret/base64
  tools are denied; only tools in `READ_TOOLS` run without approval; everything else
  (including brand-new tools) pauses for an Approve/Reject card; email/PO sends always
  ask. **When you add a read-only MCP tool, add it to `READ_TOOLS`** or Giellie will
  ask approval for every call.
- Every `/api/v1/giellie/*` route authenticates with `getBrowserSessionUser(req)`
  (PB token in `Authorization`). These routes hold `AGENT_API_KEY`; never expose one
  without that check.
- Config (key, model, base URL, on/off) is the existing `/settings/ai` row; Giellie
  uses its own system prompt in `giellie-system-prompt.ts`.
- Classification is **args-aware**: use `classifyToolCall(name, input)` (not bare
  `classifyTool`) for routing. A plain write whose input carries a contact-routing key
  (`email*`, `bcc`, `cc`, `sender`, `recipient`, any depth ≤ 4) is escalated to "confirm".
  `quotes.re_run_ai` is denied (it wipes every quote item); `orders.cancel`,
  `delivery_notes.cancel` and `delivery_notes.combine` always ask.
- The "Trust this chat" toggle is **per chat** and only auto-approves ordinary writes.
  It never covers confirm-class actions: email/PO sends, cancels/merges, and changes to
  email/contact fields.
- Env: `AGENT_API_KEY` (server-side MCP auth, required) and, in containers,
  `AGENT_API_BASE_URL` (a full `https://` origin) so the MCP's loopback calls reach the
  app; scheme-less values like `localhost:4001` are ignored.
- The `giellie_chats` collection is created by `npm run pb:migrate:giellie-chats`
  (manual step on the live PB, like select values and pb_hooks). Its API rules are
  stricter than the original spec: users may list/view their own chats only;
  create/update/delete are null (all writes go through the admin client in
  `giellie-chat-store.ts`).

# AI quote assistant — fills unpriced quote lines from the POS

Runbook: `docs/quote-assistant.md`. Files: `src/lib/server/quote-assistant-{core,shortlist,ai,prompt,service}.ts`
(logic, POS shortlist, MiniMax call, default prompt, orchestration) and `src/lib/quote-assistant-{review,save}.ts`
(client-safe review/save helpers). Routes: `POST /api/v1/quotes/assistant/tick` (n8n, `assertAgentAuth`),
`POST /api/v1/quotes/{id}/assistant/run` (browser), MCP `quotes.assistant_fill`. Settings live in Settings → AI.

- A line is **pending** (purple) only when `ai_fill.status === "filled" && !ai_fill.reviewed_at && pricing_source === "ai_pos"` (`isAiFillPending`).
- AI writes **never set `is_processed`**, never change quote status, never send, and never touch a line with a price, `user_edited` or `is_processed`.
- `pricing_source "ai_pos"` must survive human saves: route every save through `nextPricingSourceOnSave` / `withAiReview`, or a stale page turns the line back to `manual`.
- Manual live steps (like select values and pb_hooks): run `npm run pb:migrate:quote-assistant` against the live PB before deploying, then activate the n8n workflow "WFDASH Quote assistant tick" (every 5 min, POSTs the tick route). See the runbook.

# AI order assistant — matches orders to the quote they came from

Runbook: `docs/order-assistant.md`. Files: `src/lib/server/order-assistant-{core,ai,prompt,service}.ts`
(eligibility + auto-link rule, AI call, default prompt, orchestration) and
`src/lib/server/order-quote-link-service.ts` (the deterministic shortlist). Routes:
`POST /api/v1/orders/assistant/tick` (n8n, `assertAgentAuth`),
`POST /api/v1/orders/{id}/assistant/run` (browser), MCP `orders.assistant_match`. Settings live in
Settings → AI → Order assistant.

- `orders.quote` is written **only** through `setOrderQuote`, inside `runWithAuditActor({ name: "AI order assistant" }, …)`. A 409 from it is not an error — the assistant falls back to a suggestion.
- Auto-link needs **all** of: the setting on, confidence `high`, every real order line paired `same_item "sure"`, every pair on a line of the one chosen quote, and the quote's company = the order's company. Otherwise it only writes `potential_quote` (confidence 0.9 / 0.7 / 0.5) and `quote_match_method "ai_suggest"`.
- The AI never changes a line's status, creates a PO or sends anything. An AI failure is recorded on `orders.ai_quote_match` with status `error` and is never thrown out of `matchOrder`.
- Manual live steps (like select values and pb_hooks): run `npm run pb:migrate:order-assistant` against the live PB, publish the `ai_quote_match` / `ai_fill` `IGNORED_FIELDS` hook change, deploy, dry-run then `--apply` the stale-suggestion clean-up script, activate the n8n workflow "WFDASH Order assistant tick" (every 5 min), then switch the order assistant on in Settings → AI. See the runbook.

# AI Collection Confirm checks — reads driver photos, ticks lines, never confirms

Runbook: `docs/collection-ai-checks.md`. Files: `src/lib/server/collection-ai-{read,pair,findings,service,prompt}.ts`
(vision read, pairing call, document-level findings, orchestration, default prompt) and `src/lib/collection-ai-ticks.ts`
(pure, client-safe tick logic). Routes: `POST /api/v1/collection-confirm/ai/tick` (n8n, agent auth),
`.../ai/check` and `.../add-to-pos` (browser session), MCP `collection_confirm.ai_check`. Settings live in Settings → AI → Collection checks.

- **Manual first:** the Add to POS button and the Check with AI button are manual; the tick only reads and checks, nothing else.
- The AI writes **only** `ai_check`, `collection_doc_reads` rows, an **empty** SKU when it is sure, and — only when a "sure" tax-invoice line shows a discount — the cost set to the price after discount (via `updateOrderItemCost`, with a note). It never overwrites a person's SKU, confirms a collection, or changes status.
- The service refuses to run until `ai_check` exists (PB drops unknown fields silently); `ai_check` is in `IGNORED_FIELDS` of the audit hook.
- Manual live steps (like select values and pb_hooks): run `npm run pb:migrate:collection-ai` against the live PB, redeploy `pocketbase/pb_hooks/audit_log_utils.js`, deploy, activate the n8n workflow "WFDASH Collection check tick" (every 5 min), then switch Collection checks on in Settings → AI. See the runbook.

# PO numbers: create customer POs only through `createPurchaseOrderWithNumber`

`src/lib/server/po-number.ts` numbers a PO by reading the month's highest
number and adding one. Called in parallel (one order, several suppliers)
that gave 34 duplicate PO numbers by 2026-10-19. `createPurchaseOrderWithNumber`
numbers and creates one PO at a time and retries when the unique index on
`po_number` rejects a clash. Never call `generatePONumber` and then
`purchase_orders.create` yourself; the browser goes through
`POST /api/v1/orders/[id]/purchase-orders`. The partial unique index is a
manual live step: `npm run pb:migrate:po-number-unique` (after deploying).

# Stock orders on Collection Confirm

Collected stock lines show on Collection Confirm until their stock order is
`received` (`STOCK_ON_PAGE_FILTER` in `collection-confirm-service.ts`, shared
with the AI check). Confirm stock calls `markStockOrdersReceived`, which flips
the order to `received` once every line is collected/booked — the
accountant's booking queue lists `received`. Stock photos live on
`stock_purchases.additional_attachments` (multi-file after the manual live
step `npm run pb:migrate:stock-photos`; run it before deploying the driver
app). Always add with `additional_attachments+`.

# Short collections split on Collection Confirm

When a collected customer line has `qty_collected < quantity`, Confirm
(`confirmOrderItemsWithSplits`) cuts it to what was collected — that part
goes to invoicing and closes in full — and creates the rest as a new
`pending` line on the same order (`src/lib/short-collection.ts`, marker
`order_item_details.shortCollection`). The process page offers "Back order"
(relink to the original PO: `po_generated`, or `collection_pool` when ready)
via `POST /api/v1/order-items/{id}/back-order`; otherwise the buyer orders it
elsewhere or cancels it like any new line. Never put a part-invoiced line
back to `ready_invoice` expecting a later top-up: invoicing subtracts
`qty_invoiced`, and the split is what re-orders the shortfall.

Supplier-side lines (`exclude_from_invoice`) close to `invoiced` at Confirm
when every billable line on their order is already billed; stragglers get a
"Close supplier-side lines" button on Invoicing
(`POST /api/v1/invoicing/close-supplier-side`).