Aplikasi catat jual-beli saham: Odoo 17 + Postgres 16 + addon saat_invest

- docker-compose.yml: odoo:17.0 (port 8069) + postgres:16 (internal, no publish)
- Addon saat_invest: model saat.saham / saat.transaksi / saat.portofolio
  - P/L computed (realized FIFO, unrealized dari harga_sekarang)
  - action_recalculate() endpoint untuk Flutter
  - seed 5 saham IDX (BBRI, TLKM, BBCA, ASII, PTBA)
- JSON-RPC end-to-end terverifikasi: create beli/jual -> recalculate -> portfolio
  (avg_cost 4525, realized 65000, unrealized 220000, nilai 3840000)
- PLAN.md: rancangan disetujui Bozz
- Login Odoo admin/admin (ganti password master di .env, jangan commit)

README.md

@@ -0,0 +1,79 @@
+# Aplikasi Catat Jual-Beli Saham — Odoo 17 + Flutter
+
+Backend Odoo ERP (Community 17) untuk mencatat pembelian & penjualan saham,
+diakses dari aplikasi **Flutter** (Android).
+
+## Arsitektur
+```
+Flutter app (Android)  ──JSON-RPC──►  Odoo 17 (Python)
+                                        │  custom addon: saat_invest
+                                        ▼
+                                     PostgreSQL 16
+```
+
+## Stack
+
+| Layer | Teknologi | Port |
+|---|---|---|
+| Backend | Odoo 17 Community (`odoo:17.0`) | `8069` (host) |
+| Database | PostgreSQL 16 (`postgres:16`) | internal (5432, tdk di-publish) |
+| Mobile | Flutter (Android) | — |
+
+## Struktur proyek
+```
+saat-app/
+├── docker-compose.yml     # Odoo 17 + PostgreSQL 16
+├── .env                   # RAHASIA: password (jangan commit)
+├── addons/                # custom addon buatan sendiri (saat_invest)
+└── README.md
+```
+
+## Cara menjalankan
+```bash
+cd /home/ardhi/Application/saat-app
+docker compose config      # validasi
+docker compose up -d       # start
+```
+
+Akses UI: http://localhost:8069 — login `admin` / `admin`
+(`ADMIN_PASSWORD` untuk Database Management di `.env`).
+
+## Status
+- ✅ Odoo 17 container jalan (port 8069), DB PostgreSQL 16 healthy
+- ✅ JSON-RPC aktif (uid `admin` verified) — endpoint yang akan dipakai Flutter
+- ✅ **Addon `saat_invest` terinstal** (model saham, transaksi, portofolio + seed 5 saham IDX)
+- ✅ End-to-end teruji: buat beli/jual → recalculate → hitung avg cost & realized/unrealized P/L
+- ⏳ Aplikasi Flutter (login, catat jual/beli, portfolio, P/L)
+
+## Install / upgrade addon saat_invest
+```bash
+cd /home/ardhi/Application/saat-app
+set -a && source .env && set +a
+# install pertama kali
+docker exec -e PASSWORD="$POSTGRES_PASSWORD" saat-odoo odoo \
+  -d "$POSTGRES_DB" --db_host=db --db_user="$POSTGRES_USER" \
+  --db_password="$POSTGRES_PASSWORD" --no-http --stop-after-init -i saat_invest
+# upgrade setelah ubah kode
+docker exec -e PASSWORD="$POSTGRES_PASSWORD" saat-odoo odoo \
+  -d "$POSTGRES_DB" --db_host=db --db_user="$POSTGRES_USER" \
+  --db_password="$POSTGRES_PASSWORD" --no-http --stop-after-init -u saat_invest
+docker restart saat-odoo
+```
+
+> Catatan Odoo: `<list>` view di Odoo 17 kadang bermasalah, pakai `<tree>`
+> (kompatibel lintas versi) seperti yang sudah dilakukan.
+
+## API untuk Flutter (via JSON-RPC `execute_kw`)
+Semua melalui `POST /jsonrpc` dengan `{service:'object', method:'execute_kw'}`.
+Login: `common.authenticate(db, user, pass)` → `uid`.
+- List saham: `saat.saham search_read [domain] {fields}`
+- Catat transaksi: `saat.transaksi create [{vals}]`
+- List transaksi: `saat.transaksi search_read [domain] {fields}`
+- **Rekalkulasi portofolio**: `saat.portofolio action_recalculate [[]]`
+- Baca portofolio: `saat.portofolio search_read [domain] {fields}`
+  (sisa_lembar, avg_cost, total_beli_biaya, realized_pl, unrealized_pl, nilai_sekarang)
+
+## Catatan keamanan
+- `.env` berisi rahasia → **tidak boleh di-commit** (sudah di `.gitignore`)
+- PostgreSQL tidak di-publish ke host, hanya akses antar-container
+- Ganti `ADMIN_PASSWD` segera setelah setup awal