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+# fusion_accounting_bank_rec — Cursor / Claude Context
+
+## Purpose
+
+Replaces (or augments — coexists with) Odoo Enterprise's `account_accountant`
+bank reconciliation widget with a Fusion-native, AI-assistive implementation.
+Ships in Phase 1 of the fusion_accounting roadmap.
+
+## Architecture
+
+Hybrid: the engine (`fusion.reconcile.engine`, AbstractModel) is the SINGLE
+write surface for reconciliations. Everything else (controller, OWL widget,
+AI tools, wizards, cron) routes through the engine's 6-method API:
+
+- `reconcile_one(line, against_lines, write_off_vals=None)`
+- `reconcile_batch(lines, strategy='auto')`
+- `suggest_matches(lines, limit_per_line=3)`
+- `accept_suggestion(suggestion)`
+- `write_off(line, account, amount, label, tax_id=None)`
+- `unreconcile(partial_reconciles)`
+
+Pure-Python services live in `services/`:
+- `memo_tokenizer` — Canadian bank memo regex
+- `exchange_diff` — FX gain/loss pre-compute
+- `matching_strategies` — AmountExact, FIFO, MultiInvoice
+- `precedent_lookup` — K-nearest search
+- `pattern_extractor` — per-partner aggregate
+- `confidence_scoring` — 4-pass pipeline (statistical → AI re-rank)
+- `precedent_backfill` — migration helper
+
+Persistent models in `models/`:
+- `fusion.reconcile.pattern` — per-(company, partner) learned profile
+- `fusion.reconcile.precedent` — per-decision history
+- `fusion.reconcile.suggestion` — AI suggestions with state lifecycle
+- `fusion.bank.rec.widget` — TransientModel for OWL round-trip
+- `fusion.unreconciled.bank.line.mv` — pre-aggregated MV for fast UI listing
+- `fusion.bank.rec.cron` — cron handler (suggest, pattern refresh, MV refresh)
+- `fusion.auto.reconcile.wizard` / `fusion.bulk.reconcile.wizard` — TransientModel wizards
+- `fusion.migration.wizard` (inherits) — adds `_bank_rec_bootstrap_step`
+- `account.bank.statement.line` (inherits) — adds fusion_top_suggestion_id, fusion_confidence_band, etc.
+- `account.reconcile.model` (inherits) — adds fusion_ai_confidence_threshold
+
+Controller: `controllers/bank_rec_controller.py` exposes 10 JSON-RPC endpoints
+under `/fusion/bank_rec/*`. All calls route through the engine.
+
+OWL frontend: `static/src/`
+- `services/bank_reconciliation_service.js` — central reactive state + RPC wrappers
+- `views/kanban/bank_rec_kanban_*.js` — top-level controller + renderer
+- `components/bank_reconciliation/<...>` — 14 mirrored Enterprise components + 8 fusion-only components (ai_suggestion folder, batch_action_bar, reconcile_model_picker, attachment_strip, partner_history_panel)
+- `tours/bank_rec_tours.js` — 5 OWL tour smoke tests
+
+## Conventions
+
+- **V19 deprecations to avoid:** `_sql_constraints` (use `models.Constraint`),
+  `@api.depends('id')` (raises `NotImplementedError`), `@route(type='json')`
+  (use `type='jsonrpc'`), `numbercall` field on `ir.cron` (removed),
+  `groups_id` on `res.users` (use `all_group_ids` for searching),
+  `users` field on `res.groups` (use `user_ids`), `groups_id` on
+  `ir.ui.menu` (use `group_ids`).
+
+- **Coexistence:** When `account_accountant` is installed, the fusion menu
+  is hidden via `fusion_accounting_core.group_fusion_show_when_enterprise_absent`
+  (a computed group). Engine model is always available.
+
+- **Materialized view refresh:** Triggered on `fusion.reconcile.suggestion`
+  create/write (best-effort, non-blocking). Cron refreshes every 5 min via
+  a dedicated autocommit cursor (REFRESH CONCURRENTLY can't run inside
+  Odoo's regular transaction).
+
+- **Test factories:** `tests/_factories.py` provides `make_bank_journal`,
+  `make_bank_line`, `make_invoice`, `make_reconcileable_pair`, `make_suggestion`,
+  `make_pattern`, `make_precedent`. NOTE: `make_bank_journal` defaults to
+  code `'TEST'` so multiple calls in one test will collide; pass an explicit
+  unique code or share a journal across calls.
+
+- **Hypothesis property tests:** Use `@settings(suppress_health_check=[...])`
+  to silence function_scoped_fixture warnings in TransactionCase.
+
+## Test counts (as of Phase 1 complete)
+
+- 157 logical tests total in fusion_accounting_bank_rec
+- 0 failures, 0 errors
+- Includes: 4 benchmark tests (tagged 'benchmark'), 1 local LLM smoke (tagged 'local_llm', skips when no LLM), 5 OWL tour tests (tagged 'tour')
+
+## Performance baseline
+
+| Operation | P95 | Budget |
+|---|---|---|
+| `engine.suggest_matches` (1 line) | 234ms | <500ms |
+| `engine.reconcile_batch` (50 lines) | 3318ms | <5000ms |
+| `controller.list_unreconciled` (50 lines) | 77ms | <200ms |
+| MV refresh | 60ms | <2000ms |
+
+All within 1x of budget at Phase 1 ship.
+
+## Known concerns / Phase 1.5 backlog
+
+- `accept_suggestion` returns `partial_ids` but not `is_reconciled` — UI reads it post-call
+- `engine.write_off` mixed mode (write-off + against_lines) implemented but untested
+- `engine.reconcile_one` returns `exchange_diff_move_id: None` (Odoo's reconcile() handles FX inline; surfacing the move_id needs an extra query)
+- `against_lines` early-break in `reconcile_one` silently drops excess; auto strategy avoids this but manual callers should pre-validate
+- Reconcile-model bulk wizard `_apply_lines_for_bank_statement_line` is Enterprise-only (Community falls back to per-line error)
+- OWL tour tests skip-mode when websocket-client absent
diff --git a/fusion_accounting_bank_rec/README.md b/fusion_accounting_bank_rec/README.md
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+# fusion_accounting_bank_rec
+
+AI-assisted bank reconciliation for Odoo 19 Community — a Fusion-native
+replacement for Enterprise's `account_accountant` bank reconciliation widget.
+
+## What it does
+
+- Side-by-side parity with Enterprise's bank reconciliation UI (kanban + side
+  panel, multi-currency, write-offs, attachments, chatter)
+- AI-assistive: confidence-scored suggestions per bank line via the
+  `fusion.reconcile.engine` 4-pass scoring pipeline (statistical + optional
+  LLM re-rank)
+- Coexists with `account_accountant` (Enterprise wins by default; Fusion menu
+  appears only when Enterprise is uninstalled)
+- Migration-aware: bootstrap step backfills `fusion.reconcile.precedent` from
+  existing `account.partial.reconcile` rows so the AI has memory from day 1
+
+## Quick start
+
+```bash
+# Install
+odoo --addons-path=... -i fusion_accounting_bank_rec
+
+# Open the widget (when Enterprise's account_accountant is NOT installed)
+# Apps → Bank Reconciliation → Reconcile Bank Lines
+
+# When Enterprise IS installed: use Enterprise's UI; the engine + AI tools
+# are still available via the AI chat.
+```
+
+## Configuration
+
+- Local LLM (LM Studio, Ollama):
+  - `fusion_accounting.openai_base_url` = `http://host.docker.internal:1234/v1`
+  - `fusion_accounting.openai_model` = your local model name
+  - `fusion_accounting.provider.bank_rec_suggest` = `openai`
+
+## See also
+
+- `CLAUDE.md` — agent context
+- `UPGRADE_NOTES.md` — Odoo version anchoring
diff --git a/fusion_accounting_bank_rec/UPGRADE_NOTES.md b/fusion_accounting_bank_rec/UPGRADE_NOTES.md
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+# fusion_accounting_bank_rec — Upgrade Notes
+
+## Odoo Version Anchor
+
+This module targets **Odoo 19.0** (community-base).
+
+Reference snapshot of Enterprise code mirrored from:
+- `account_accountant` (Odoo 19.0.x)
+- Source: `/Users/gurpreet/Github/RePackaged-Odoo/accounting/account_accountant/`
+
+## Cross-Version Diff Strategy
+
+When a new Odoo version ships:
+
+1. Run `check_odoo_diff.sh` (in repo root) against the new Enterprise version
+2. Note any breaking changes in `account.bank.statement.line` API
+3. For mirrored OWL components, diff Enterprise's new versions against ours and
+   port material changes (signature renames, new behaviour we want to inherit)
+4. Re-run the full test suite + tour tests against the new Odoo version
+5. Update this file with the new version anchor + any deviations
+
+## V19 Migration Notes (already applied)
+
+- `_sql_constraints` → `models.Constraint` (Tasks 14, 15)
+- `@api.depends('id')` → removed (Task 17)
+- `@route(type='json')` → `type='jsonrpc'` (Task 26)
+- `numbercall` removed from `ir.cron` (Task 25)
+- `res.groups.users` → `user_ids` (Task 43)
+- `ir.ui.menu.groups_id` → `group_ids` (Tasks 42, 43)
+
+## Phase 1 → Phase 1.5 Migration
+
+If we ship Phase 1.5 (UI polish, deferred features), changes will go in
+incremental commits. No DB migration needed (Phase 1 schema is forward-compatible).