feat: initial shared library extraction

Contains shared infrastructure for all coop services:
- shared/ (factory, urls, user_loader, context, internal_api, jinja_setup)
- models/ (User, Order, Calendar, Ticket, Product, Ghost CMS)
- db/ (SQLAlchemy async session, base)
- suma_browser/app/ (csrf, middleware, errors, authz, redis_cacher, payments, filters, utils)
- suma_browser/templates/ (shared base layouts, macros, error pages)
- static/ (CSS, JS, fonts, images)
- alembic/ (database migrations)
- config/ (app-config.yaml)
- editor/ (Lexical editor Node.js build)
- requirements.txt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

alembic/old_versions/20251106_152905_calendar_config.py

@@ -0,0 +1,62 @@
+"""add calendar description and slots
+
+Revision ID: 20251106_152905_calendar_config
+Revises: 215330c5ec15
+Create Date: 2025-11-06T15:29:05.243479
+"""
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = "20251106_152905_calendar_config"
+down_revision = "215330c5ec15"
+branch_labels = None
+depends_on = None
+
+def upgrade() -> None:
+    with op.batch_alter_table("calendars") as batch_op:
+        batch_op.add_column(sa.Column("description", sa.Text(), nullable=True))
+
+    op.create_table(
+        "calendar_slots",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column("calendar_id", sa.Integer(), sa.ForeignKey("calendars.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("name", sa.String(length=255), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+
+        sa.Column("mon", sa.Boolean(), nullable=False, server_default=sa.false()),
+        sa.Column("tue", sa.Boolean(), nullable=False, server_default=sa.false()),
+        sa.Column("wed", sa.Boolean(), nullable=False, server_default=sa.false()),
+        sa.Column("thu", sa.Boolean(), nullable=False, server_default=sa.false()),
+        sa.Column("fri", sa.Boolean(), nullable=False, server_default=sa.false()),
+        sa.Column("sat", sa.Boolean(), nullable=False, server_default=sa.false()),
+        sa.Column("sun", sa.Boolean(), nullable=False, server_default=sa.false()),
+
+        sa.Column("time_start", sa.Time(timezone=False), nullable=False),
+        sa.Column("time_end", sa.Time(timezone=False), nullable=False),
+
+        sa.Column("cost", sa.Numeric(10, 2), nullable=True),
+
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
+        sa.CheckConstraint("(time_end > time_start)", name="ck_calendar_slots_time_end_after_start"),
+    )
+
+    op.create_index("ix_calendar_slots_calendar_id", "calendar_slots", ["calendar_id"], unique=False)
+    op.create_index("ix_calendar_slots_time_start", "calendar_slots", ["time_start"], unique=False)
+
+    op.create_unique_constraint(
+        "uq_calendar_slots_unique_band",
+        "calendar_slots",
+        ["calendar_id", "name"]
+    )
+
+def downgrade() -> None:
+    op.drop_constraint("uq_calendar_slots_unique_band", "calendar_slots", type_="unique")
+    op.drop_index("ix_calendar_slots_time_start", table_name="calendar_slots")
+    op.drop_index("ix_calendar_slots_calendar_id", table_name="calendar_slots")
+    op.drop_table("calendar_slots")
+
+    with op.batch_alter_table("calendars") as batch_op:
+        batch_op.drop_column("description")