Monorepo: consolidate 7 repos into one

Combines shared, blog, market, cart, events, federation, and account
into a single repository. Eliminates submodule sync, sibling model
copying at build time, and per-app CI orchestration.

Changes:
- Remove per-app .git, .gitmodules, .gitea, submodule shared/ dirs
- Remove stale sibling model copies from each app
- Update all 6 Dockerfiles for monorepo build context (root = .)
- Add build directives to docker-compose.yml
- Add single .gitea/workflows/ci.yml with change detection
- Add .dockerignore for monorepo build context
- Create __init__.py for federation and account (cross-app imports)

blog/models/__init__.py

@@ -0,0 +1,14 @@
+from .ghost_content import Post, Author, Tag, PostAuthor, PostTag, PostLike
+from .snippet import Snippet
+from .tag_group import TagGroup, TagGroupTag
+
+# Shared models — canonical definitions live in shared/models/
+from shared.models.ghost_membership_entities import (
+    GhostLabel, UserLabel,
+    GhostNewsletter, UserNewsletter,
+    GhostTier, GhostSubscription,
+)
+from shared.models.menu_item import MenuItem
+from shared.models.kv import KV
+from shared.models.magic_link import MagicLink
+from shared.models.user import User

blog/models/ghost_content.py

@@ -0,0 +1,3 @@
+from shared.models.ghost_content import (  # noqa: F401
+    Tag, Post, Author, PostAuthor, PostTag, PostLike,
+)

blog/models/ghost_membership_entities.py

@@ -0,0 +1,12 @@
+# Re-export from canonical shared location
+from shared.models.ghost_membership_entities import (
+    GhostLabel, UserLabel,
+    GhostNewsletter, UserNewsletter,
+    GhostTier, GhostSubscription,
+)
+
+__all__ = [
+    "GhostLabel", "UserLabel",
+    "GhostNewsletter", "UserNewsletter",
+    "GhostTier", "GhostSubscription",
+]

blog/models/kv.py

@@ -0,0 +1,4 @@
+# Re-export from canonical shared location
+from shared.models.kv import KV
+
+__all__ = ["KV"]

blog/models/magic_link.py

@@ -0,0 +1,4 @@
+# Re-export from canonical shared location
+from shared.models.magic_link import MagicLink
+
+__all__ = ["MagicLink"]

blog/models/menu_item.py

@@ -0,0 +1,4 @@
+# Re-export from canonical shared location
+from shared.models.menu_item import MenuItem
+
+__all__ = ["MenuItem"]

blog/models/snippet.py

@@ -0,0 +1,32 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import Integer, String, Text, DateTime, ForeignKey, UniqueConstraint, Index, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from shared.db.base import Base
+
+
+class Snippet(Base):
+    __tablename__ = "snippets"
+    __table_args__ = (
+        UniqueConstraint("user_id", "name", name="uq_snippets_user_name"),
+        Index("ix_snippets_visibility", "visibility"),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(
+        ForeignKey("users.id", ondelete="CASCADE"), nullable=False,
+    )
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+    value: Mapped[str] = mapped_column(Text, nullable=False)
+    visibility: Mapped[str] = mapped_column(
+        String(20), nullable=False, default="private", server_default="private",
+    )
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now(),
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now(),
+    )

blog/models/tag_group.py

@@ -0,0 +1,52 @@
+from datetime import datetime
+from typing import List, Optional
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from sqlalchemy import (
+    Integer,
+    String,
+    Text,
+    DateTime,
+    ForeignKey,
+    UniqueConstraint,
+    func,
+)
+from shared.db.base import Base
+
+
+class TagGroup(Base):
+    __tablename__ = "tag_groups"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+    slug: Mapped[str] = mapped_column(String(191), unique=True, nullable=False)
+    feature_image: Mapped[Optional[str]] = mapped_column(Text())
+    colour: Mapped[Optional[str]] = mapped_column(String(32))
+    sort_order: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now()
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
+    )
+
+    tag_links: Mapped[List["TagGroupTag"]] = relationship(
+        "TagGroupTag", back_populates="group", cascade="all, delete-orphan", passive_deletes=True
+    )
+
+
+class TagGroupTag(Base):
+    __tablename__ = "tag_group_tags"
+    __table_args__ = (
+        UniqueConstraint("tag_group_id", "tag_id", name="uq_tag_group_tag"),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    tag_group_id: Mapped[int] = mapped_column(
+        ForeignKey("tag_groups.id", ondelete="CASCADE"), nullable=False
+    )
+    tag_id: Mapped[int] = mapped_column(
+        ForeignKey("tags.id", ondelete="CASCADE"), nullable=False
+    )
+
+    group: Mapped["TagGroup"] = relationship("TagGroup", back_populates="tag_links")

blog/models/user.py

@@ -0,0 +1,4 @@
+# Re-export from canonical shared location
+from shared.models.user import User
+
+__all__ = ["User"]