Initial commit: Organized PTC project structure with .gitignore and README

db/migrations/20260323_add_staging_ptc.sql

@@ -0,0 +1,39 @@
+set search_path = budget_app, public;
+
+create table if not exists staging_ptc_transactions (
+    id uuid primary key default gen_random_uuid(),
+    import_batch varchar(50) not null,
+    source_file_name varchar(255) not null,
+    source_sheet_name varchar(100) not null default 'Sheet1',
+    source_row_no integer not null,
+    transaction_date_raw varchar(50),
+    transaction_date date,
+    in_out varchar(20),
+    account_code_raw varchar(30),
+    account_name_raw varchar(100),
+    department_name_raw varchar(100),
+    vendor_name_raw varchar(200),
+    project_code_raw varchar(50),
+    project_type_raw varchar(50),
+    project_name_raw varchar(200),
+    description_raw text,
+    supply_amount_raw varchar(50),
+    vat_amount_raw varchar(50),
+    total_amount_raw varchar(50),
+    remarks_raw text,
+    supply_amount numeric(18, 2),
+    vat_amount numeric(18, 2),
+    total_amount numeric(18, 2),
+    normalized_transaction_type varchar(20),
+    load_status varchar(20) not null default 'loaded',
+    load_error text,
+    created_at timestamptz not null default now(),
+    updated_at timestamptz not null default now(),
+    constraint uq_staging_ptc_row unique (import_batch, source_row_no),
+    constraint chk_staging_load_status check (load_status in ('loaded', 'mapped', 'error'))
+);
+
+create index if not exists idx_staging_ptc_batch on staging_ptc_transactions(import_batch, source_row_no);
+create index if not exists idx_staging_ptc_project on staging_ptc_transactions(project_code_raw);
+create index if not exists idx_staging_ptc_account on staging_ptc_transactions(account_code_raw);
+create index if not exists idx_staging_ptc_department on staging_ptc_transactions(department_name_raw);