Initial scaffold for AvtoAmbor parts inventory

SvelteKit 2 + Svelte 4 + adapter-node, SQLite via better-sqlite3 (WAL,
foreign keys on). Bilingual EN/Тоҷикӣ throughout, locale persisted in
localStorage.

Pages: dashboard (totals, low stock, recent movements), parts list with
search and sort, part create/edit, record movement (in/out/adjust with
smart unit-price and adjust-quantity prefill), suppliers list with
inline add.

Schema: categories, suppliers, parts (with _en/_tg name+description
columns, dirams for money), stock_movements with check on movement_type.
On-hand updates are done in JS inside a transaction with the movement
insert.

Dockerized dev: docker compose, named project, bind-mounted data/ for
DB persistence. Seed contains 6 categories, 4 suppliers, 31 realistic
parts (Lada / Nexia / Opel / Toyota bias).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/lib/server/schema.sql

@@ -0,0 +1,56 @@
+-- AvtoAmbor schema. Money is stored as INTEGER dirams (1 TJS = 100 dirams).
+-- Translated fields use _en / _tg suffixes.
+
+CREATE TABLE IF NOT EXISTS categories (
+  id          INTEGER PRIMARY KEY AUTOINCREMENT,
+  name_en     TEXT NOT NULL,
+  name_tg     TEXT NOT NULL,
+  sort_order  INTEGER NOT NULL DEFAULT 0
+);
+
+CREATE TABLE IF NOT EXISTS suppliers (
+  id          INTEGER PRIMARY KEY AUTOINCREMENT,
+  name        TEXT NOT NULL,
+  phone       TEXT,
+  address     TEXT,
+  notes       TEXT,
+  created_at  TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS parts (
+  id                  INTEGER PRIMARY KEY AUTOINCREMENT,
+  sku                 TEXT NOT NULL UNIQUE,
+  name_en             TEXT NOT NULL,
+  name_tg             TEXT NOT NULL,
+  description_en      TEXT,
+  description_tg      TEXT,
+  category_id         INTEGER REFERENCES categories(id) ON DELETE SET NULL,
+  unit                TEXT NOT NULL DEFAULT 'pcs',
+  cost_price          INTEGER NOT NULL DEFAULT 0,    -- dirams
+  sale_price          INTEGER NOT NULL DEFAULT 0,    -- dirams
+  quantity_on_hand    INTEGER NOT NULL DEFAULT 0,
+  reorder_level       INTEGER NOT NULL DEFAULT 0,
+  location            TEXT,
+  barcode             TEXT,
+  active              INTEGER NOT NULL DEFAULT 1,
+  created_at          TEXT NOT NULL DEFAULT (datetime('now')),
+  updated_at          TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS stock_movements (
+  id              INTEGER PRIMARY KEY AUTOINCREMENT,
+  part_id         INTEGER NOT NULL REFERENCES parts(id) ON DELETE CASCADE,
+  movement_type   TEXT NOT NULL CHECK(movement_type IN ('in','out','adjust')),
+  quantity        INTEGER NOT NULL,   -- positive for in/adjust-up, negative for out/adjust-down
+  unit_price      INTEGER,            -- dirams; nullable for adjustments
+  supplier_id     INTEGER REFERENCES suppliers(id) ON DELETE SET NULL,
+  reference       TEXT,
+  notes           TEXT,
+  created_at      TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE INDEX IF NOT EXISTS idx_parts_sku           ON parts(sku);
+CREATE INDEX IF NOT EXISTS idx_parts_barcode       ON parts(barcode);
+CREATE INDEX IF NOT EXISTS idx_parts_category      ON parts(category_id);
+CREATE INDEX IF NOT EXISTS idx_movements_part      ON stock_movements(part_id);
+CREATE INDEX IF NOT EXISTS idx_movements_created   ON stock_movements(created_at);