refactor: rename package fabledassistant -> scribe (code-only)

Renames src/fabledassistant -> src/scribe and all imports, plus the
default DB name and DB user/password (fabled -> scribe) in config +
compose. 952 refs / 154 files. Reverses the old 'internal name stays
fabledassistant' convention.

Code-only: live databases are still physically named 'fabledassistant'.
Deployed environments must set POSTGRES_DB / POSTGRES_USER (or rename the
DB) since the defaults now resolve to 'scribe'. Repo (FabledScribe), git
host (fabledsword), MCP (fabled-git) and the image name (fabledscribe)
are intentionally unchanged.

ruff check src/ clean locally; CI (typecheck + pytest) is the gate.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/scribe/models/__init__.py

@@ -0,0 +1,42 @@
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+from sqlalchemy.orm import DeclarativeBase
+
+from scribe.config import Config
+
+engine = create_async_engine(
+    Config.DATABASE_URL,
+    echo=False,
+    pool_pre_ping=True,
+    pool_recycle=1800,
+)
+async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+from scribe.models.base import CreatedAtMixin, TimestampMixin  # noqa: E402, F401
+
+
+from scribe.models.note import Note, TaskPriority, TaskStatus  # noqa: E402, F401
+from scribe.models.setting import Setting  # noqa: E402, F401
+from scribe.models.user import User  # noqa: E402, F401
+from scribe.models.app_log import AppLog  # noqa: E402, F401
+from scribe.models.password_reset import PasswordResetToken  # noqa: E402, F401
+from scribe.models.invitation import InvitationToken  # noqa: E402, F401
+from scribe.models.embedding import NoteEmbedding  # noqa: E402, F401
+from scribe.models.project import Project  # noqa: E402, F401
+from scribe.models.event import Event  # noqa: E402, F401
+from scribe.models.milestone import Milestone  # noqa: E402, F401
+from scribe.models.task_log import TaskLog  # noqa: E402, F401
+from scribe.models.note_draft import NoteDraft  # noqa: E402, F401
+from scribe.models.note_version import NoteVersion  # noqa: E402, F401
+from scribe.models.group import Group, GroupMembership  # noqa: E402, F401
+from scribe.models.share import NoteShare, ProjectShare  # noqa: E402, F401
+from scribe.models.notification import Notification  # noqa: E402, F401
+from scribe.models.api_key import ApiKey  # noqa: E402, F401
+from scribe.models.user_profile import UserProfile  # noqa: E402, F401
+from scribe.models.rulebook import (  # noqa: E402, F401
+    Rulebook, RulebookTopic, Rule, project_rulebook_subscriptions,
+)