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Update documentation to align terminology, clarify project stages, and improve consistency; add RECOMMENDATIONS.md for project-specific guidance.

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olekhondera
2025-12-12 01:50:38 +02:00
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docs/frontend/FRONTEND_ARCHITECTURE_PLAN.md
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# Frontend Architecture Plan — Accounting AI Agent
# Frontend Architecture Plan — AI Product Template
> **Status:** Phase 0 (Planning) — recommendations to finalize in Phase 1
> **Scope:** Next.js (App Router, TS) + Tailwind + React Query/SWR for ingestion → categorization → approvals → reporting → billing
> **Sources:** Next.js App Router best practices (per latest docs), product/domain docs in `/docs`
## 0. Goals & Non-Goals
- Ship a clear, predictable frontend for finance users: fast tables, reliable status, explainability (rule hit, embedding score, LLM reasoning trace).
- Optimize for multi-tenant, webhook-driven states, and Stripe-hosted billing; no direct provider/LLM calls from the browser.
- Ship a clear, predictable frontend for users in your target domain: fast tables, reliable status, explainability (rule hit, embedding score, LLM reasoning trace).
- Optimize for multi-tenant, webhook-driven states, and payment‑provider‑hosted billing; no direct provider/LLM calls from the browser.
- Non-goal: custom card forms or direct provider SDKs in the browser.
## 1. Routing & Layout
- App Router with `app/`; root `layout.tsx` imports globals (per Next.js docs).
- Layout shells: public (marketing), app shell (auth/tenant-protected), auth screens.
- Minimal routes: `/`, `/transactions`, `/transactions/review`, `/rules`, `/reports`, `/settings/billing`, `/settings/accounts`, `/settings/team`.
- Minimal routes: `/`, `/records`, `/records/review`, `/rules`, `/reports`, `/settings/billing`, `/settings/integrations`, `/settings/team`.
- Navigation state from `next/navigation`; avoid dynamic `href` objects in `<Link>` (App Router requirement).
## 2. Feature/Folder Structure
```
src/
app/ # routes/layouts
features/ # onboarding, transactions, approvals, rules, reports, billing, settings
entities/ # tenant, user, transaction, rule, report, event, integration
shared/ # ui kit, hooks, api client, lib (formatting, currency), auth client
features/ # onboarding, records, approvals, rules, reports, billing, settings
entities/ # tenant, user, record, rule, report, event, integration
shared/ # ui kit, hooks, api client, lib (formatting, domain utils), auth client
widgets/ # composed UI blocks (dashboards, charts, tables)
```
- Co-locate queries/mutations/types/tests per feature; keep shared minimal.
@@ -29,7 +29,7 @@ src/
## 3. Data Layer & State
- HTTP client with typed fetchers; attach auth/tenant context; central 401/403 handling.
- React Query/SWR for cache + background refresh; server-side data where possible (RSC) with client wrappers for interactivity.
- Pagination/virtualization for large lists (`/transactions`, `/events`); filters persisted in URL search params.
- Pagination/virtualization for large lists (`/records`, `/events`); filters persisted in URL search params.
- Optimistic updates only for low-risk actions (naming/rule toggles); approvals/overrides stay pessimistic with clear status.
## 4. Auth, Tenant, Roles
@@ -38,12 +38,12 @@ src/
- Role-based UI gating (owner/admin/viewer); hide/disable disallowed actions.
## 5. UX for Key Flows
- **Transactions:** table with status chips (ingested/categorized/needs_approval/approved/error), drawer: raw payload, rule hit, embedding score, `reasoning_trace`, receipts, history.
- **Records:** table with status chips (ingested/categorized/needs_approval/approved/error), drawer: raw payload, rule hit, embedding score, `reasoning_trace`, attachments, history.
- **Approvals:** queue view, approve/override with confirmation; optional rule creation inline; show impact preview.
- **Rules:** list (priority, hit rate), editor with condition/action JSON preview, test on sample set.
- **Reports:** date range, currency/timezone indicators; async export with status chips and download links.
- **Billing:** Stripe-hosted Checkout/Portal; post-return state from backend; recovery CTAs.
- **Integrations:** QuickBooks/bank connection status, webhook health, rotate secrets; surface retry guidance.
- **Reports:** date range and domain indicators (e.g., timezone/currency if relevant); async export with status chips and download links.
- **Billing:** payment‑provider‑hosted Checkout/Portal; post-return state from backend; recovery CTAs.
- **Integrations:** external provider connection status, webhook health, rotate secrets; surface retry guidance.
- **Errors/Support:** human-readable errors with traceId; recovery steps for webhook/LLM failures.
## 6. Styling & UI Kit
@@ -71,12 +71,12 @@ src/
## 11. Testing
- Unit: helpers/formatters.
- Component: transactions table/drawer, approvals flow, rule editor, billing/status banners.
- E2E: onboarding + source connect, transaction ingest display, categorize → approve, rule create/apply, billing flow, report export.
- Component: records table/drawer, approvals flow, rule editor, billing/status banners.
- E2E: onboarding + source connect, record ingest display, categorize → approve, rule create/apply, billing flow, report export.
## 12. Open Questions / To Finalize
- Exact table virtualization lib (if any) and charting choice.
- How much data is loaded server-side vs client-side for `/transactions` (depends on API paging).
- How much data is loaded server-side vs client-side for `/records` (depends on API paging).
- Error surface for LLM fallback (what to show vs hide).
- i18n scope (English only vs multi-lingual).
- Whether to expose `rawSnippet` of LLM response in UI or keep to audit logs only.

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docs/frontend/architecture.md
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```
src/
app/ # routes/layouts
features/ # flows: onboarding, transactions, approvals, reports, billing
entities/ # domain: tenant, user, transaction, rule, report, event
features/ # flows: onboarding, records, approvals, reports, billing
entities/ # domain: tenant, user, record, rule, report, event
shared/ # ui kit, hooks, api client, utils
widgets/ # composed UI blocks
i18n/ # translations (if added)
@@ -37,11 +37,11 @@ Principles: co-locate tests/types; avoid cross-feature coupling; keep shared min
- Single typed HTTP client; attach auth tokens; handle 401/403 centrally.
- Cache with React Query/SWR; use optimistic/paused states carefully for approvals and rule edits.
- Prefer RSC for data loading; mark interactive leaf nodes with `"use client"`.
- Pagination/filtering for transaction-heavy views; background refetch for webhook-driven updates.
- Pagination/filtering for record-heavy views; background refetch for webhook-driven updates.
## 4. Payments & Billing UI
- Backend initiates Stripe sessions/portal links; frontend renders statuses only.
- After return from Stripe, fetch status from backend (webhook-driven source of truth); show success/fail/pending and recovery options.
- Backend initiates payment-provider sessions/portal links; frontend renders statuses only.
- After return from payment provider, fetch status from backend (webhook-driven source of truth); show success/fail/pending and recovery options.
- Never collect raw card data; no custom card forms.
## 5. LLM & Explainability Surfacing
@@ -54,5 +54,5 @@ Principles: co-locate tests/types; avoid cross-feature coupling; keep shared min
## 7. Testing
- Unit: utility/helpers.
- Component: critical UI (transactions list, approval drawer, rule editor, billing modal).
- Component: critical UI (records list, approval drawer, rule editor, billing modal).
- E2E: onboarding, ingestion health check, categorize + approve, billing change, report export.

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docs/frontend/overview.md
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---
**Last Updated:** 2025-01-17
**Phase:** Phase 0 (Planning)
**Status:** Approved
**Status:** Draft
**Owner:** Frontend Architect
**References:**
- `/docs/project-overview.md` (product goals)
@@ -12,17 +12,17 @@
---
## 1. Role of Frontend
- Deliver onboarding, data connection, categorization review, approval, reporting, and billing experiences for SMB finance users.
- Deliver onboarding, data connection, categorization review, approval, reporting, and optional billing experiences for users in your target domain.
- Keep flows fast, explainable (surface reasoning trace, rule hit), and safe (reflect webhook/provider states, avoid double actions).
## 2. Core Screens & Flows
- Marketing/landing with CTA to signup.
- Onboarding: signup/login, plan selection (Stripe Checkout/portal), source connection (QuickBooks OAuth2, bank webhooks health), team invites.
- Transactions: lists/filters, detail drawer (raw fields, rule hit, embedding score, LLM reasoning trace), bulk actions.
- Onboarding: signup/login, plan selection (payment provider Checkout/Portal if applicable), source connection (external providers via OAuth2/webhooks), team invites.
- Records: lists/filters, detail drawer (raw fields, rule hit, embedding score, LLM reasoning trace), bulk actions.
- Approvals & Rules: approval queue, override + optional rule creation, rule list/editor, history snippets.
- Reports: P&L/summary dashboards, exports with statuses.
- Reports: dashboards/summaries, exports with statuses.
- Billing & Settings: subscription status, payment method, tenant/team management, integrations health, audit/event log view.
- Routes (min set): `/`, `/transactions`, `/transactions/review`, `/rules`, `/reports`, `/settings/billing`, `/settings/accounts`.
- Routes (min set): `/`, `/records`, `/records/review`, `/rules`, `/reports`, `/settings/billing`, `/settings/integrations`.
## 3. Technical Principles
- Next.js (App Router) with TypeScript; Tailwind for styling; React Query/SWR for data fetching and cache orchestration.
@@ -31,10 +31,10 @@
- Strong loading/error/empty states for data-heavy lists; avoid blocking UX during long jobs (categorization replays, exports).
## 4. Backend Interaction
- All data via backend APIs; frontend never calls providers (Stripe/QuickBooks/banks/LLM) directly.
- Payments: initiate via backend (Stripe session/portal) and show statuses driven by webhooks.
- All data via backend APIs; frontend never calls external providers (data, payment, LLM) directly.
- Payments: initiate via backend (payment provider session/portal) and show statuses driven by webhooks.
- LLM: never called from the browser; surfaced reasoning traces come from backend responses.
- Auth: Clerk/Auth.js; guard routes per tenant/role; handle token refresh gracefully.
## 5. I18n
- Primary UI in English; other locales optional. Keep copy concise and finance-friendly.
- Primary UI in English; other locales optional. Keep copy concise and domain-appropriate.

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docs/frontend/seo-performance.md
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- Minimize global state; prefer streaming data in RSC where possible.
## 5. Data-Heavy Views
- Virtualize large tables (transactions, events); paginate server-side.
- Virtualize large tables (records, events); paginate server-side.
- Background refetch for webhook-driven updates; avoid full-page reloads.
- Show skeletons and incremental data rather than blank states.

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docs/frontend/ui-ux-guidelines.md
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---
## 1. Tone & Clarity
- Professional, concise, finance-friendly. Emphasize trust (audit log, reasoning traces, secure billing and webhooks).
- Professional and concise. Emphasize trust (audit log, reasoning traces, secure billing and webhooks).
- Avoid jargon without tooltips; show why a decision was made (rule hit, similarity, LLM reasoning).
## 2. Responsiveness
@@ -34,14 +34,14 @@
- Require confirmation when enabling a high-priority rule; surface last editor and timestamp.
### Onboarding & Integrations
- Display connection status/health for QuickBooks/bank webhooks; guide recovery/retry.
- Stripe plan selection and post-checkout status must be clear and recoverable.
- Display connection status/health for external providers and their webhooks; guide recovery/retry.
- Payment plan selection and post-checkout status must be clear and recoverable.
### Reports & Exports
- Show date range, currency, timezone; indicate processing state and download links when ready.
## 5. Payments & Billing UX
- Use provider trust markers (Stripe) and keep users on provider-hosted flows.
- Use provider trust markers and keep users on provider-hosted flows.
- Post-return states: success, pending, failed; include retry/contact support options.
## 6. Support & Errors