feat(coord): add todos system with per-user/machine/project scoping

New coord_todos table and API endpoints (GET/POST/PUT/DELETE /api/coord/todos)
supporting manual and auto-created items, sub-tasks via parent_id, and inclusive
for_user/for_machine filters (OR-null) for sync/save display. sync.sh Phase 7
now shows pending todos grouped by project after every sync. CLAUDE.md documents
auto-creation behavior for unresolved follow-up. Web/email pricing doc updated:
block time rate clarified, INKY reference removed, dates updated.

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

api/models/__init__.py

@@ -10,6 +10,7 @@ from api.models.coord_work_item import CoordWorkItem
 from api.models.coord_session_lock import CoordSessionLock
 from api.models.coord_component_state import CoordComponentState
 from api.models.coord_message import CoordMessage
+from api.models.coord_todo import CoordTodo
 from api.models.backup_log import BackupLog
 from api.models.base import Base, TimestampMixin, UUIDMixin
 from api.models.billable_time import BillableTime
@@ -57,6 +58,7 @@ __all__ = [
     "CoordSessionLock",
     "CoordComponentState",
     "CoordMessage",
+    "CoordTodo",
     "BackupLog",
     "Base",
     "BillableTime",

api/models/coord_todo.py

@@ -0,0 +1,96 @@
+"""Coordination personal/project to-do item model."""
+
+from datetime import datetime
+from typing import Optional
+
+from sqlalchemy import CHAR, Boolean, CheckConstraint, DateTime, ForeignKey, Index, String, Text
+from sqlalchemy.orm import Mapped, mapped_column
+
+from .base import Base, TimestampMixin, UUIDMixin
+
+
+class CoordTodo(Base, UUIDMixin, TimestampMixin):
+    """A personal or project-scoped to-do item, optionally nested under a parent."""
+
+    __tablename__ = "coord_todos"
+
+    text: Mapped[str] = mapped_column(
+        Text,
+        nullable=False,
+        doc="The to-do item text"
+    )
+
+    project_key: Mapped[Optional[str]] = mapped_column(
+        String(100),
+        doc="Project scope; NULL means personal"
+    )
+
+    parent_id: Mapped[Optional[str]] = mapped_column(
+        CHAR(36),
+        ForeignKey("coord_todos.id", ondelete="CASCADE"),
+        doc="Parent to-do ID for sub-tasks; NULL means top-level"
+    )
+
+    assigned_to_user: Mapped[Optional[str]] = mapped_column(
+        String(50),
+        doc="Target user, e.g. 'mike' or 'howard'; NULL = any user"
+    )
+
+    assigned_to_machine: Mapped[Optional[str]] = mapped_column(
+        String(100),
+        doc="Target hostname; NULL = any machine"
+    )
+
+    auto_created: Mapped[bool] = mapped_column(
+        Boolean,
+        nullable=False,
+        default=False,
+        doc="True when Claude auto-generated this item"
+    )
+
+    source_context: Mapped[Optional[str]] = mapped_column(
+        Text,
+        doc="Why Claude auto-created this item"
+    )
+
+    status: Mapped[str] = mapped_column(
+        String(20),
+        nullable=False,
+        default="pending",
+        doc="Status: pending / done / cancelled"
+    )
+
+    completed_at: Mapped[Optional[datetime]] = mapped_column(
+        DateTime,
+        doc="When the item was marked done"
+    )
+
+    completed_by: Mapped[Optional[str]] = mapped_column(
+        String(100),
+        doc="Session or user that completed the item"
+    )
+
+    created_by_user: Mapped[str] = mapped_column(
+        String(50),
+        nullable=False,
+        doc="User who created the item"
+    )
+
+    created_by_machine: Mapped[str] = mapped_column(
+        String(100),
+        nullable=False,
+        doc="Hostname where the item was created"
+    )
+
+    __table_args__ = (
+        CheckConstraint(
+            "status IN ('pending', 'done', 'cancelled')",
+            name="ck_coord_todos_status",
+        ),
+        Index("idx_coord_todos_project_status", "project_key", "status"),
+        Index("idx_coord_todos_assigned", "assigned_to_user", "assigned_to_machine", "status"),
+        Index("idx_coord_todos_parent", "parent_id"),
+    )
+
+    def __repr__(self) -> str:
+        return f"<CoordTodo(status='{self.status}', text='{self.text[:40]}')>"