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/mcp/tools/rulebooks.py

@@ -0,0 +1,433 @@
+"""MCP tools for the Scribe Rulebook system.
+
+Sixteen tools: rulebook/topic/rule CRUD + subscription management. Thin
+wrappers over services/rulebooks.py — ownership is enforced in the service.
+
+Destructive ops (delete_*) require confirmed=True; otherwise return a
+preview-style warning. Mirrors the pattern in delete_event and the design
+spec.
+"""
+from __future__ import annotations
+
+from scribe.mcp._context import current_user_id
+from scribe.services import rulebooks as rulebooks_svc
+from scribe.services import trash as trash_svc
+
+
+# ── Rulebook CRUD ───────────────────────────────────────────────────────
+
+async def list_rulebooks() -> dict:
+    """List all rulebooks owned by the current user.
+
+    Returns id, title, description for each.
+    """
+    uid = current_user_id()
+    rows = await rulebooks_svc.list_rulebooks(uid)
+    return {"rulebooks": [rb.to_dict() for rb in rows]}
+
+
+async def get_rulebook(rulebook_id: int) -> dict:
+    """Fetch a rulebook by id with its full topic list."""
+    uid = current_user_id()
+    rb = await rulebooks_svc.get_rulebook(rulebook_id, uid)
+    if rb is None:
+        raise ValueError(f"rulebook {rulebook_id} not found")
+    topics = await rulebooks_svc.list_topics(rulebook_id, uid)
+    data = rb.to_dict()
+    data["topics"] = [t.to_dict() for t in topics]
+    return data
+
+
+async def create_rulebook(title: str, description: str = "") -> dict:
+    """Create a new rulebook.
+
+    Args:
+        title: Rulebook name (e.g. "FabledSword family").
+        description: Optional short description of what this rulebook covers.
+    """
+    uid = current_user_id()
+    rb = await rulebooks_svc.create_rulebook(
+        user_id=uid, title=title, description=description,
+    )
+    return rb.to_dict()
+
+
+async def update_rulebook(
+    rulebook_id: int, title: str = "", description: str = "",
+    always_on: bool | None = None,
+) -> dict:
+    """Update an existing rulebook. Only non-empty fields are changed.
+
+    Args:
+        rulebook_id: Rulebook to update.
+        title: New title. Empty string leaves unchanged.
+        description: New description. Empty string leaves unchanged.
+        always_on: When True, rules in this rulebook are loaded at session
+            start by list_always_on_rules regardless of project context.
+            Pass None to leave unchanged.
+    """
+    uid = current_user_id()
+    fields: dict = {}
+    if title:
+        fields["title"] = title
+    if description:
+        fields["description"] = description
+    if always_on is not None:
+        fields["always_on"] = always_on
+    rb = await rulebooks_svc.update_rulebook(rulebook_id, uid, **fields)
+    if rb is None:
+        raise ValueError(f"rulebook {rulebook_id} not found")
+    return rb.to_dict()
+
+
+async def delete_rulebook(rulebook_id: int, confirmed: bool = False) -> dict:
+    """Permanently delete a rulebook (cascades to all its topics and rules).
+
+    Pass confirmed=True to actually delete. Without confirmation, returns a
+    preview describing what will be cascaded.
+    """
+    uid = current_user_id()
+    rb = await rulebooks_svc.get_rulebook(rulebook_id, uid)
+    if rb is None:
+        raise ValueError(f"rulebook {rulebook_id} not found")
+    if not confirmed:
+        topics = await rulebooks_svc.list_topics(rulebook_id, uid)
+        rule_count = 0
+        for t in topics:
+            rule_count += len(await rulebooks_svc.list_rules(uid, topic_id=t.id))
+        return {
+            "warning": (
+                f"Rulebook {rulebook_id} ('{rb.title}') contains "
+                f"{len(topics)} topics and {rule_count} rules; all will be "
+                f"deleted. Pass confirmed=True to proceed."
+            ),
+            "confirmed_required": True,
+        }
+    batch = await trash_svc.delete(uid, "rulebook", rulebook_id)
+    return {"deleted": rulebook_id, "deleted_batch_id": batch,
+            "message": f"Moved to trash. Restore with restore('{batch}')."}
+
+
+# ── Topic CRUD ─────────────────────────────────────────────────────────
+
+async def list_topics(rulebook_id: int) -> dict:
+    """List topics inside a rulebook."""
+    uid = current_user_id()
+    rows = await rulebooks_svc.list_topics(rulebook_id, uid)
+    return {"topics": [t.to_dict() for t in rows]}
+
+
+async def create_topic(
+    rulebook_id: int, title: str,
+    description: str = "", order_index: int = 0,
+) -> dict:
+    """Create a topic within a rulebook.
+
+    Args:
+        rulebook_id: Rulebook to add the topic to.
+        title: Topic name (e.g. "git-workflow").
+        description: Optional description.
+        order_index: Display order (0-based; default 0).
+    """
+    uid = current_user_id()
+    topic = await rulebooks_svc.create_topic(
+        rulebook_id=rulebook_id, user_id=uid,
+        title=title, description=description, order_index=order_index,
+    )
+    return topic.to_dict()
+
+
+async def update_topic(
+    topic_id: int, title: str = "",
+    description: str = "", order_index: int = -1,
+) -> dict:
+    """Update a topic. Sentinels: title="" / description="" leave unchanged;
+    order_index=-1 leaves unchanged.
+    """
+    uid = current_user_id()
+    fields: dict = {}
+    if title:
+        fields["title"] = title
+    if description:
+        fields["description"] = description
+    if order_index >= 0:
+        fields["order_index"] = order_index
+    topic = await rulebooks_svc.update_topic(topic_id, uid, **fields)
+    if topic is None:
+        raise ValueError(f"topic {topic_id} not found")
+    return topic.to_dict()
+
+
+async def delete_topic(topic_id: int, confirmed: bool = False) -> dict:
+    """Delete a topic and all its rules. Requires confirmed=True."""
+    uid = current_user_id()
+    topic = await rulebooks_svc.get_topic(topic_id, uid)
+    if topic is None:
+        raise ValueError(f"topic {topic_id} not found")
+    if not confirmed:
+        rules = await rulebooks_svc.list_rules(uid, topic_id=topic_id)
+        return {
+            "warning": (
+                f"Topic {topic_id} ('{topic.title}') contains {len(rules)} "
+                f"rules; all will be deleted. Pass confirmed=True to proceed."
+            ),
+            "confirmed_required": True,
+        }
+    batch = await trash_svc.delete(uid, "topic", topic_id)
+    return {"deleted": topic_id, "deleted_batch_id": batch,
+            "message": f"Moved to trash. Restore with restore('{batch}')."}
+
+
+# ── Rule CRUD ──────────────────────────────────────────────────────────
+
+async def list_rules(
+    rulebook_id: int = 0, topic_id: int = 0, project_id: int = 0,
+) -> dict:
+    """List rules — filter by rulebook, topic, and/or project.
+
+    Args:
+        rulebook_id: 0 = no filter; positive = restrict to that rulebook.
+        topic_id: 0 = no filter; positive = restrict to that topic.
+        project_id: 0 = no filter; positive = restrict to rules applicable
+            to that project (via its rulebook subscriptions).
+
+    All filters are AND-combined; ownership-scoped.
+    """
+    uid = current_user_id()
+    rows = await rulebooks_svc.list_rules(
+        user_id=uid,
+        rulebook_id=rulebook_id or None,
+        topic_id=topic_id or None,
+        project_id=project_id or None,
+    )
+    return {
+        "rules": [
+            {
+                "id": r.id, "title": r.title, "statement": r.statement,
+                "topic_id": r.topic_id,
+            }
+            for r in rows
+        ],
+        "total": len(rows),
+    }
+
+
+async def list_always_on_rules() -> dict:
+    """Return all rules from rulebooks flagged always_on for the current user.
+
+    Call this at session start. Treat the returned rules as binding for the
+    session — they apply regardless of which project (if any) is in scope.
+    Pair with get_project(id).applicable_rules when working on a specific
+    project to also load that project's subscription-derived rules.
+    """
+    uid = current_user_id()
+    rules = await rulebooks_svc.list_always_on_rules(uid)
+    return {
+        "rules": [
+            {
+                "id": r.id, "title": r.title, "statement": r.statement,
+                "topic_id": r.topic_id,
+            }
+            for r in rules
+        ],
+        "total": len(rules),
+    }
+
+
+async def get_rule(rule_id: int) -> dict:
+    """Fetch a rule by id — full statement + why + how_to_apply."""
+    uid = current_user_id()
+    rule = await rulebooks_svc.get_rule(rule_id, uid)
+    if rule is None:
+        raise ValueError(f"rule {rule_id} not found")
+    return rule.to_dict()
+
+
+async def create_rule(
+    topic_id: int, title: str, statement: str,
+    why: str = "", how_to_apply: str = "", order_index: int = 0,
+) -> dict:
+    """Create a new rule under a topic (cross-project rulebook rule).
+
+    Args:
+        topic_id: The topic to attach the rule to.
+        title: A short imperative title (e.g. "dev is home").
+        statement: The actionable instruction (required). 1-2 sentences.
+        why: Optional rationale — the reason the rule exists.
+        how_to_apply: Optional operationalization — when / where it kicks in.
+        order_index: Display order within the topic (default 0).
+
+    For a rule that applies to a single project only, use create_project_rule
+    instead — no rulebook+topic ceremony required.
+    """
+    uid = current_user_id()
+    rule = await rulebooks_svc.create_rule(
+        topic_id=topic_id, user_id=uid,
+        title=title, statement=statement,
+        why=why, how_to_apply=how_to_apply, order_index=order_index,
+    )
+    return rule.to_dict()
+
+
+async def create_project_rule(
+    project_id: int, statement: str, title: str = "",
+    why: str = "", how_to_apply: str = "", order_index: int = 0,
+) -> dict:
+    """Create a rule scoped to a single project (no rulebook needed).
+
+    Use this when a rule only applies to one project — it bypasses the
+    Rulebook -> Topic -> Rule ceremony. The rule is returned in get_project's
+    applicable_rules (under project_rules) and in list_rules(project_id=...).
+
+    Args:
+        project_id: The project to attach the rule to.
+        statement: The actionable instruction (required). 1-2 sentences.
+        title: Short imperative title. If empty, derived from the first ~50
+            characters of statement.
+        why: Optional rationale — the reason the rule exists.
+        how_to_apply: Optional operationalization — when / where it kicks in.
+        order_index: Display order within the project's rule list (default 0).
+    """
+    uid = current_user_id()
+    derived_title = title.strip() or statement.strip().split(".")[0][:50]
+    rule = await rulebooks_svc.create_project_rule(
+        project_id=project_id, user_id=uid,
+        title=derived_title, statement=statement,
+        why=why, how_to_apply=how_to_apply, order_index=order_index,
+    )
+    return rule.to_dict()
+
+
+async def update_rule(
+    rule_id: int, title: str = "", statement: str = "",
+    why: str = "", how_to_apply: str = "", order_index: int = -1,
+) -> dict:
+    """Update a rule. Empty strings / order_index=-1 leave fields unchanged."""
+    uid = current_user_id()
+    fields: dict = {}
+    if title:
+        fields["title"] = title
+    if statement:
+        fields["statement"] = statement
+    if why:
+        fields["why"] = why
+    if how_to_apply:
+        fields["how_to_apply"] = how_to_apply
+    if order_index >= 0:
+        fields["order_index"] = order_index
+    rule = await rulebooks_svc.update_rule(rule_id, uid, **fields)
+    if rule is None:
+        raise ValueError(f"rule {rule_id} not found")
+    return rule.to_dict()
+
+
+async def delete_rule(rule_id: int, confirmed: bool = False) -> dict:
+    """Move a rule to the trash (recoverable). Requires confirmed=True."""
+    uid = current_user_id()
+    rule = await rulebooks_svc.get_rule(rule_id, uid)
+    if rule is None:
+        raise ValueError(f"rule {rule_id} not found")
+    if not confirmed:
+        return {
+            "warning": (
+                f"Rule {rule_id} ('{rule.title}') will be moved to the trash "
+                f"(recoverable via restore). Pass confirmed=True to proceed."
+            ),
+            "confirmed_required": True,
+        }
+    batch = await trash_svc.delete(uid, "rule", rule_id)
+    return {"deleted": rule_id, "deleted_batch_id": batch,
+            "message": f"Moved to trash. Restore with restore('{batch}')."}
+
+
+# ── Subscriptions ──────────────────────────────────────────────────────
+
+async def subscribe_project_to_rulebook(
+    project_id: int, rulebook_id: int,
+) -> dict:
+    """Subscribe a project to a rulebook. Its rules will apply to that project."""
+    uid = current_user_id()
+    await rulebooks_svc.subscribe_project(
+        project_id=project_id, rulebook_id=rulebook_id, user_id=uid,
+    )
+    return {"project_id": project_id, "rulebook_id": rulebook_id, "subscribed": True}
+
+
+async def unsubscribe_project_from_rulebook(
+    project_id: int, rulebook_id: int,
+) -> dict:
+    """Remove a project's subscription to a rulebook."""
+    uid = current_user_id()
+    await rulebooks_svc.unsubscribe_project(
+        project_id=project_id, rulebook_id=rulebook_id, user_id=uid,
+    )
+    return {"project_id": project_id, "rulebook_id": rulebook_id, "subscribed": False}
+
+
+# ── Suppressions — project-level mute of rulebook rules / topics ────────
+
+async def suppress_rule_for_project(
+    project_id: int, rule_id: int,
+) -> dict:
+    """Mute a single rulebook rule for one project.
+
+    The rule stays in its rulebook for other projects; only this project
+    skips it. Idempotent. Use unsuppress_rule_for_project to re-enable.
+    Project-scoped rules (create_project_rule) are NOT suppressible — delete
+    them with delete_rule instead.
+    """
+    uid = current_user_id()
+    await rulebooks_svc.suppress_rule_for_project(
+        project_id=project_id, rule_id=rule_id, user_id=uid,
+    )
+    return {"project_id": project_id, "rule_id": rule_id, "suppressed": True}
+
+
+async def unsuppress_rule_for_project(
+    project_id: int, rule_id: int,
+) -> dict:
+    """Re-enable a previously-suppressed rule for one project. Idempotent."""
+    uid = current_user_id()
+    await rulebooks_svc.unsuppress_rule_for_project(
+        project_id=project_id, rule_id=rule_id, user_id=uid,
+    )
+    return {"project_id": project_id, "rule_id": rule_id, "suppressed": False}
+
+
+async def suppress_topic_for_project(
+    project_id: int, topic_id: int,
+) -> dict:
+    """Mute every rule under a topic for one project.
+
+    Equivalent to suppressing each rule in the topic individually, but
+    auto-includes new rules added to the topic later. Idempotent.
+    """
+    uid = current_user_id()
+    await rulebooks_svc.suppress_topic_for_project(
+        project_id=project_id, topic_id=topic_id, user_id=uid,
+    )
+    return {"project_id": project_id, "topic_id": topic_id, "suppressed": True}
+
+
+async def unsuppress_topic_for_project(
+    project_id: int, topic_id: int,
+) -> dict:
+    """Re-enable a previously-suppressed topic for one project. Idempotent."""
+    uid = current_user_id()
+    await rulebooks_svc.unsuppress_topic_for_project(
+        project_id=project_id, topic_id=topic_id, user_id=uid,
+    )
+    return {"project_id": project_id, "topic_id": topic_id, "suppressed": False}
+
+
+def register(mcp) -> None:
+    for fn in (
+        list_rulebooks, get_rulebook, create_rulebook, update_rulebook, delete_rulebook,
+        list_topics, create_topic, update_topic, delete_topic,
+        list_rules, list_always_on_rules, get_rule,
+        create_rule, create_project_rule, update_rule, delete_rule,
+        subscribe_project_to_rulebook, unsubscribe_project_from_rulebook,
+        suppress_rule_for_project, unsuppress_rule_for_project,
+        suppress_topic_for_project, unsuppress_topic_for_project,
+    ):
+        mcp.tool(name=fn.__name__)(fn)