feat: Add data-entry-app for fiscal receipts with approval workflow

New application for entering fiscal receipts (bonuri fiscale) with:

Backend (FastAPI + SQLModel + Alembic):
- Receipt, ReceiptAttachment, AccountingEntry models
- CRUD operations with async SQLite database
- Workflow: DRAFT → PENDING_REVIEW → APPROVED/REJECTED
- Auto-generation of accounting entries with VAT calculation
- File upload support (images, PDFs)
- Predefined expense types (Fuel, Materials, Office, etc.)
- Nomenclature service for partners, accounts, cash registers

Frontend (Vue.js 3 + PrimeVue + Pinia):
- ReceiptsListView with filters and stats
- ReceiptCreateView with image upload
- ReceiptDetailView with accounting entries
- ReceiptApprovalView for accountant approval

Documentation:
- REQUIREMENTS.md with functional specifications
- ARCHITECTURE.md with technical decisions
- CLAUDE.md for AI assistant guidance

Phase 1 MVP uses SQLite, prepared for Oracle integration in Phase 2.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

data-entry-app/backend/migrations/env.py

@@ -0,0 +1,79 @@
+"""Alembic environment configuration."""
+
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+from sqlmodel import SQLModel
+
+# Import all models to ensure they're registered with SQLModel
+from app.db.models.receipt import Receipt, ReceiptAttachment
+from app.db.models.accounting_entry import AccountingEntry
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+target_metadata = SQLModel.metadata
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+        render_as_batch=True,  # Required for SQLite ALTER TABLE support
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            render_as_batch=True,  # Required for SQLite ALTER TABLE support
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

data-entry-app/backend/migrations/script.py.mako

@@ -0,0 +1,27 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

data-entry-app/backend/migrations/versions/001_initial_receipts.py

@@ -0,0 +1,112 @@
+"""Initial receipts schema
+
+Revision ID: 001_initial
+Revises:
+Create Date: 2024-12-11
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+# revision identifiers, used by Alembic.
+revision: str = '001_initial'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Create receipts table
+    op.create_table(
+        'receipts',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('receipt_type', sa.Enum('BON_FISCAL', 'CHITANTA', name='receipttype'), nullable=False),
+        sa.Column('direction', sa.Enum('CHELTUIALA', 'INCASARE', name='receiptdirection'), nullable=False),
+        sa.Column('receipt_number', sa.String(length=50), nullable=True),
+        sa.Column('receipt_series', sa.String(length=20), nullable=True),
+        sa.Column('receipt_date', sa.Date(), nullable=False),
+        sa.Column('amount', sa.Numeric(precision=15, scale=2), nullable=False),
+        sa.Column('description', sa.String(length=500), nullable=True),
+        sa.Column('expense_type_code', sa.String(length=20), nullable=True),
+        sa.Column('company_id', sa.Integer(), nullable=False),
+        sa.Column('partner_id', sa.Integer(), nullable=True),
+        sa.Column('partner_name', sa.String(length=200), nullable=True),
+        sa.Column('cash_register_id', sa.Integer(), nullable=True),
+        sa.Column('cash_register_name', sa.String(length=100), nullable=True),
+        sa.Column('cash_register_account', sa.String(length=20), nullable=True),
+        sa.Column('status', sa.Enum('DRAFT', 'PENDING_REVIEW', 'APPROVED', 'REJECTED', 'SYNCED', name='receiptstatus'), nullable=False),
+        sa.Column('created_by', sa.String(length=100), nullable=False),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.Column('updated_at', sa.DateTime(), nullable=False),
+        sa.Column('submitted_at', sa.DateTime(), nullable=True),
+        sa.Column('reviewed_by', sa.String(length=100), nullable=True),
+        sa.Column('reviewed_at', sa.DateTime(), nullable=True),
+        sa.Column('rejection_reason', sa.String(length=500), nullable=True),
+        sa.Column('oracle_synced_at', sa.DateTime(), nullable=True),
+        sa.Column('oracle_act_id', sa.Integer(), nullable=True),
+        sa.Column('oracle_error', sa.String(length=500), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_receipts_company_id'), 'receipts', ['company_id'], unique=False)
+    op.create_index(op.f('ix_receipts_status'), 'receipts', ['status'], unique=False)
+    op.create_index(op.f('ix_receipts_created_by'), 'receipts', ['created_by'], unique=False)
+    op.create_index(op.f('ix_receipts_receipt_date'), 'receipts', ['receipt_date'], unique=False)
+
+    # Create receipt_attachments table
+    op.create_table(
+        'receipt_attachments',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('receipt_id', sa.Integer(), nullable=False),
+        sa.Column('filename', sa.String(length=255), nullable=False),
+        sa.Column('stored_filename', sa.String(length=255), nullable=False),
+        sa.Column('file_path', sa.String(length=500), nullable=False),
+        sa.Column('file_size', sa.Integer(), nullable=False),
+        sa.Column('mime_type', sa.String(length=100), nullable=False),
+        sa.Column('uploaded_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['receipt_id'], ['receipts.id'], ondelete='CASCADE'),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_receipt_attachments_receipt_id'), 'receipt_attachments', ['receipt_id'], unique=False)
+
+    # Create accounting_entries table
+    op.create_table(
+        'accounting_entries',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('receipt_id', sa.Integer(), nullable=False),
+        sa.Column('entry_type', sa.Enum('DEBIT', 'CREDIT', name='entrytype'), nullable=False),
+        sa.Column('account_code', sa.String(length=20), nullable=False),
+        sa.Column('account_name', sa.String(length=200), nullable=True),
+        sa.Column('amount', sa.Numeric(precision=15, scale=2), nullable=False),
+        sa.Column('partner_id', sa.Integer(), nullable=True),
+        sa.Column('cost_center_id', sa.Integer(), nullable=True),
+        sa.Column('is_auto_generated', sa.Boolean(), nullable=False),
+        sa.Column('modified_by', sa.String(length=100), nullable=True),
+        sa.Column('modified_at', sa.DateTime(), nullable=True),
+        sa.Column('sort_order', sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(['receipt_id'], ['receipts.id'], ondelete='CASCADE'),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_accounting_entries_receipt_id'), 'accounting_entries', ['receipt_id'], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index(op.f('ix_accounting_entries_receipt_id'), table_name='accounting_entries')
+    op.drop_table('accounting_entries')
+
+    op.drop_index(op.f('ix_receipt_attachments_receipt_id'), table_name='receipt_attachments')
+    op.drop_table('receipt_attachments')
+
+    op.drop_index(op.f('ix_receipts_receipt_date'), table_name='receipts')
+    op.drop_index(op.f('ix_receipts_created_by'), table_name='receipts')
+    op.drop_index(op.f('ix_receipts_status'), table_name='receipts')
+    op.drop_index(op.f('ix_receipts_company_id'), table_name='receipts')
+    op.drop_table('receipts')
+
+    # Drop enums (SQLite doesn't actually use these, but for consistency)
+    op.execute("DROP TYPE IF EXISTS receipttype")
+    op.execute("DROP TYPE IF EXISTS receiptdirection")
+    op.execute("DROP TYPE IF EXISTS receiptstatus")
+    op.execute("DROP TYPE IF EXISTS entrytype")