feat: add WS Gateway and Chat Service (Step 2)

WS Gateway:
- WebSocket lifecycle handler with RS256 JWT auth
- Redis bridge: device registry, frame publishing, tool_result routing
- Inbound routing: tool_result→LPUSH, home/floating→chat pub/sub
- Outbound: subscribes to ws:out:{user_id}, forwards to Electron
- Single-worker Dockerfile (long-lived WS connections)

Chat Service:
- Redis consumer: subscribes to chat:request:* pattern
- Redis-based ws_context: tool_call→publish, BRPOP tool_result (30s timeout)
- deep_agent: single-agent runner with home/floating/stream variants
- memory_middleware: core/associative/episodic/proactive memory with Fernet
- Domain agents: task (8 tools), note (5), project (6), timeline (4)
- LLM factory via LiteLLM (100+ providers)
- Output formatter (StreamFormatter)
- POST /chat REST fallback with Traefik header auth
- Multi-worker Dockerfile with 120s timeout for LLM calls

services/chat/Dockerfile

@@ -0,0 +1,36 @@
+# ── builder ──────────────────────────────────────────────────────────────────
+FROM python:3.12-slim AS builder
+
+WORKDIR /build
+
+COPY services/chat/requirements.txt ./requirements.txt
+RUN pip install --upgrade pip && \
+    pip install --no-cache-dir --prefix=/install -r requirements.txt
+
+# ── runtime ──────────────────────────────────────────────────────────────────
+FROM python:3.12-slim AS runtime
+
+RUN addgroup --system appgroup && adduser --system --ingroup appgroup appuser
+
+WORKDIR /app
+
+COPY --from=builder /install /usr/local
+
+# Shared module
+COPY shared/ shared/
+
+# Service source
+COPY services/chat/app/ app/
+
+RUN chown -R appuser:appgroup /app
+
+USER appuser
+
+EXPOSE 8000
+
+# Chat service is CPU-bound (LLM calls) — use multiple workers
+CMD ["gunicorn", "app.main:app", \
+     "-k", "uvicorn.workers.UvicornWorker", \
+     "--bind", "0.0.0.0:8000", \
+     "--workers", "2", \
+     "--timeout", "120"]

services/chat/app/agents/__init__.py

@@ -0,0 +1 @@
+"""Chat Service domain agents."""

services/chat/app/agents/note_agent.py

@@ -0,0 +1,142 @@
+"""Note agent — Markdown note management (list, get, create, update, delete).
+
+Adapted for Chat Service: import from app.ws_context and app.llm.
+"""
+
+from __future__ import annotations
+
+import re
+from typing import Any
+
+from langchain_core.tools import tool
+
+from app.llm import embed
+from app.ws_context import execute_on_client
+
+_UUID_RE = re.compile(
+    r"^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$"
+)
+
+
+def _is_uuid(value: str) -> bool:
+    return bool(_UUID_RE.match(value))
+
+NOTE_SYSTEM_PROMPT = (
+    "You are a note-taking assistant. You help users create, retrieve, update,\n"
+    "and delete Markdown notes in their workspace.\n\n"
+    "Rules:\n"
+    "  - content is always Markdown; preserve formatting when updating\n"
+    "  - project_id is optional; link a note to a project when mentioned\n"
+    "  - When updating, call get_note first if you need to read existing content\n"
+    "    before appending or replacing sections\n"
+    "  - list_notes without project_id returns all notes; scope with project_id\n"
+    "    when the user is working within a specific project\n"
+    "  - project_id must be a UUID; if you only know a project name, do not pass it as project_id\n"
+    "  - Do not fabricate note content — reflect what the user provides or what\n"
+    "    is already in the note (retrieved via get_note)."
+)
+
+
+@tool
+async def list_notes(project_id: str = "") -> str:
+    """List notes, optionally scoped to a project by project_id."""
+    normalized_project_id = project_id if (project_id and _is_uuid(project_id)) else ""
+    result = await execute_on_client(
+        action="select",
+        table="notes",
+        filters={"projectId": normalized_project_id or None},
+    )
+    rows = result.get("rows", [])
+    if not rows:
+        return "No notes found."
+    lines = [f"- {r['title']} (id: {r['id']})" for r in rows]
+    return f"Found {len(rows)} note(s):\n" + "\n".join(lines)
+
+
+@tool
+async def get_note(note_id: str) -> str:
+    """Fetch a single note by its UUID to read its full Markdown content."""
+    result = await execute_on_client(action="get", table="notes", data={"id": note_id})
+    row = result.get("row")
+    if not row:
+        return f"Note {note_id} not found."
+    return f"Note '{row['title']}' (id: {row['id']}):\n\n{row['content']}"
+
+
+@tool
+async def create_note(
+    title: str,
+    content: str,
+    project_id: str = "",
+) -> str:
+    """Create a new note.
+    title: note heading (required)
+    content: Markdown body text (required)
+    project_id: optional UUID linking this note to a project
+    """
+    result = await execute_on_client(
+        action="insert",
+        table="notes",
+        data={
+            "title": title,
+            "content": content,
+            "projectId": project_id or None,
+        },
+    )
+    row = result["row"]
+    # Index the note content in the vector store.
+    vector = await embed(content)
+    await execute_on_client(
+        action="vector_upsert",
+        data={"id": row["id"], "projectId": row.get("projectId"), "content": content},
+        vector=vector,
+    )
+    return f"Note created: '{row['title']}' (id: {row['id']})."
+
+
+@tool
+async def update_note(
+    note_id: str,
+    title: str = "",
+    content: str = "",
+) -> str:
+    """Update an existing note. Only pass fields that should change.
+    note_id: UUID of the note (required)
+    If you need to preserve existing content, call get_note first.
+    """
+    updates: dict[str, Any] = {}
+    if title:
+        updates["title"] = title
+    if content:
+        updates["content"] = content
+    result = await execute_on_client(
+        action="update",
+        table="notes",
+        data={"id": note_id, "updates": updates},
+    )
+    row = result["row"]
+    # Re-index if content changed.
+    if content:
+        vector = await embed(content)
+        await execute_on_client(
+            action="vector_upsert",
+            data={"id": note_id, "projectId": row.get("projectId"), "content": content},
+            vector=vector,
+        )
+    return f"Note updated: '{row['title']}' (id: {row['id']})."
+
+
+@tool
+async def delete_note(note_id: str) -> str:
+    """Delete a note permanently by its UUID."""
+    await execute_on_client(action="delete", table="notes", data={"id": note_id})
+    return f"Note {note_id} deleted."
+
+
+NOTE_TOOLS: list[Any] = [
+    list_notes,
+    get_note,
+    create_note,
+    update_note,
+    delete_note,
+]

services/chat/app/agents/project_agent.py

@@ -0,0 +1,146 @@
+"""Project agent — full lifecycle management (list, get, create, update, archive, delete).
+
+Adapted for Chat Service: import from app.ws_context instead of app.core.ws_context.
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+from langchain_core.tools import tool
+
+from app.ws_context import execute_on_client
+
+PROJECT_SYSTEM_PROMPT = (
+    "You are a project management assistant. You help users create, find,\n"
+    "update, and archive projects in their workspace.\n\n"
+    "Rules:\n"
+    "  - status must be one of: active, archived\n"
+    "  - client_id is optional; link to a client only when explicitly mentioned\n"
+    "  - ai_summary is populated only when the user asks for a project summary;\n"
+    "    derive it from context data — do not fabricate content\n"
+    "  - Use list_projects for scoped queries; list_all_projects only when the\n"
+    "    user wants a complete cross-client view including archived projects\n"
+    "  - get_project requires a project UUID; resolve the ID first by calling\n"
+    "    list_projects if you only have a project name\n"
+    "  - Prefer archiving (update_project status=archived) over deletion;\n"
+    "    only call delete_project when the user explicitly confirms deletion."
+)
+
+
+@tool
+async def list_projects(
+    client_id: str = "",
+    include_archived: int = 0,
+) -> str:
+    """List projects, optionally filtered by client_id.
+    include_archived: 1 to include archived projects, 0 for active only (default).
+    """
+    result = await execute_on_client(
+        action="select",
+        table="projects",
+        filters={
+            "clientId": client_id or None,
+            "includeArchived": bool(include_archived),
+        },
+    )
+    rows = result.get("rows", [])
+    if not rows:
+        return "No projects found."
+    lines = [f"- {r['name']} (status: {r['status']}, id: {r['id']})" for r in rows]
+    return f"Found {len(rows)} project(s):\n" + "\n".join(lines)
+
+
+@tool
+async def list_all_projects() -> str:
+    """List every project regardless of client or status.
+    Use only when the user wants a complete cross-client overview.
+    """
+    result = await execute_on_client(action="select", table="projects")
+    rows = result.get("rows", [])
+    if not rows:
+        return "No projects found."
+    lines = [f"- {r['name']} (status: {r['status']}, id: {r['id']})" for r in rows]
+    return f"All projects ({len(rows)}):\n" + "\n".join(lines)
+
+
+@tool
+async def get_project(project_id: str) -> str:
+    """Fetch a single project by its UUID."""
+    result = await execute_on_client(action="get", table="projects", data={"id": project_id})
+    row = result.get("row")
+    if not row:
+        return f"Project {project_id} not found."
+    return (
+        f"Project: '{row['name']}' (id: {row['id']}, status: {row['status']}, "
+        f"clientId: {row.get('clientId', 'none')})"
+    )
+
+
+@tool
+async def create_project(
+    name: str,
+    client_id: str = "",
+) -> str:
+    """Create a new project.
+    name: human-readable project name (required)
+    client_id: optional UUID of the owning client
+    """
+    result = await execute_on_client(
+        action="insert",
+        table="projects",
+        data={"name": name, "clientId": client_id or None},
+    )
+    row = result["row"]
+    return f"Project created: '{row['name']}' (id: {row['id']})"
+
+
+@tool
+async def update_project(
+    project_id: str,
+    name: str = "",
+    client_id: str = "",
+    status: str = "",
+    ai_summary: str = "",
+) -> str:
+    """Update a project. Only pass fields that should change.
+    project_id: UUID of the project (required)
+    status: active | archived
+    ai_summary: AI-generated summary text (populate only when explicitly requested)
+    """
+    updates: dict[str, Any] = {}
+    if name:
+        updates["name"] = name
+    if client_id:
+        updates["clientId"] = client_id
+    if status:
+        updates["status"] = status
+    if ai_summary:
+        updates["aiSummary"] = ai_summary
+    result = await execute_on_client(
+        action="update",
+        table="projects",
+        data={"id": project_id, "updates": updates},
+    )
+    row = result["row"]
+    return f"Project updated: '{row['name']}' (id: {row['id']}, status: {row['status']})"
+
+
+@tool
+async def delete_project(project_id: str) -> str:
+    """Permanently delete a project and orphan its tasks.
+    IMPORTANT: prefer update_project(status='archived') unless the user
+    has explicitly confirmed they want permanent deletion.
+    """
+    await execute_on_client(action="delete", table="projects", data={"id": project_id})
+    return f"Project {project_id} permanently deleted."
+
+
+PROJECT_TOOLS: list[Any] = [
+    list_projects,
+    list_all_projects,
+    get_project,
+    create_project,
+    update_project,
+    delete_project,
+]

services/chat/app/agents/task_agent.py

@@ -0,0 +1,240 @@
+"""Task agent — full CRUD for tasks and task comments.
+
+Adapted for Chat Service: import from app.ws_context instead of app.core.ws_context.
+"""
+
+from __future__ import annotations
+
+from datetime import datetime, timezone
+import re
+from typing import Any
+
+from langchain_core.tools import tool
+
+from app.ws_context import execute_on_client
+
+_UUID_RE = re.compile(
+    r"^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$"
+)
+
+
+def _is_uuid(value: str) -> bool:
+    return bool(_UUID_RE.match(value))
+
+TASK_SYSTEM_PROMPT = (
+    "You are a task management assistant for a project workspace.\n"
+    "You create, update, list, and track tasks and their comments.\n\n"
+    "Rules:\n"
+    "  - status must be one of: todo, in_progress, done\n"
+    "  - priority must be one of: high, medium, low\n"
+    "  - due_date is a Unix timestamp in milliseconds; convert human dates\n"
+    "  - assignees is a JSON-encoded array of strings (e.g. '[\"Alice\",\"Bob\"]')\n"
+    "  - project_id is optional; link to a project when the user mentions one\n"
+    "  - is_ai_suggested: 1 only when proactively proposing a task the user\n"
+    "    did not explicitly request; 0 otherwise\n"
+    "  - is_ai_suggested: 1 only when proactively proposing a task the user did not explicitly request; 0 otherwise\n"
+    "  - Use list_tasks_due_today for 'what's due today' queries\n"
+    "  - For update_task, use -1 for integer fields you do not want to change\n"
+    "  - Always confirm the action in plain, user-friendly language."
+)
+
+
+# ── Task tools ────────────────────────────────────────────────────────
+
+
+@tool
+async def list_tasks(
+    project_id: str = "",
+    status: str = "",
+    search: str = "",
+    order_by: str = "",
+) -> str:
+    """List tasks, optionally filtered by project_id, status (todo|in_progress|done),
+    a search string, or an order_by field name (dueDate|priority|createdAt)."""
+    normalized_project_id = project_id if (project_id and _is_uuid(project_id)) else ""
+    result = await execute_on_client(
+        action="select",
+        table="tasks",
+        filters={
+            "projectId": normalized_project_id or None,
+            "status": status or None,
+            "search": search or None,
+            "orderBy": order_by or None,
+        },
+    )
+    rows = result.get("rows", [])
+    if not rows:
+        return "No tasks found matching the given filters."
+    lines = [
+        f"- {r['title']} (status: {r['status']}, priority: {r['priority']}, id: {r['id']})"
+        for r in rows
+    ]
+    return f"Found {len(rows)} task(s):\n" + "\n".join(lines)
+
+
+@tool
+async def create_task(
+    title: str,
+    description: str = "",
+    status: str = "todo",
+    priority: str = "medium",
+    assignees: str = "[]",
+    due_date: int = 0,
+    project_id: str = "",
+    is_ai_suggested: int = 0,
+) -> str:
+    """Create a new task.
+    title: task title (required)
+    description: optional details
+    status: todo | in_progress | done  (default: todo)
+    priority: high | medium | low  (default: medium)
+    assignees: JSON-encoded array of assignee names, e.g. '["Alice"]'
+    due_date: Unix timestamp in milliseconds; 0 means no due date
+    project_id: optional UUID of the parent project
+    is_ai_suggested: 1 if proactively suggested, 0 if user-requested
+    """
+    result = await execute_on_client(
+        action="insert",
+        table="tasks",
+        data={
+            "title": title,
+            "description": description or None,
+            "status": status,
+            "priority": priority,
+            "assignee": assignees,
+            "dueDate": due_date or None,
+            "projectId": project_id or None,
+            "isAiSuggested": is_ai_suggested,
+        },
+    )
+    row = result["row"]
+    return (
+        f"Task created: '{row['title']}' "
+        f"(id: {row['id']}, status: {row['status']}, priority: {row['priority']})"
+    )
+
+
+@tool
+async def update_task(
+    task_id: str,
+    title: str = "",
+    description: str = "",
+    status: str = "",
+    priority: str = "",
+    assignees: str = "",
+    due_date: int = -1,
+    project_id: str = "",
+) -> str:
+    """Update fields on an existing task. Only pass fields you want to change.
+    task_id: the task's UUID (required)
+    due_date: -1 means unchanged; 0 clears the due date; any positive value sets it
+    """
+    updates: dict[str, Any] = {}
+    if title:
+        updates["title"] = title
+    if description:
+        updates["description"] = description
+    if status:
+        updates["status"] = status
+    if priority:
+        updates["priority"] = priority
+    if assignees:
+        updates["assignee"] = assignees
+    if due_date != -1:
+        updates["dueDate"] = due_date or None
+    if project_id:
+        updates["projectId"] = project_id
+    result = await execute_on_client(
+        action="update",
+        table="tasks",
+        data={"id": task_id, "updates": updates},
+    )
+    row = result["row"]
+    return f"Task updated: '{row['title']}' (id: {row['id']}, status: {row['status']})"
+
+
+@tool
+async def delete_task(task_id: str) -> str:
+    """Delete a task permanently by its UUID."""
+    await execute_on_client(action="delete", table="tasks", data={"id": task_id})
+    return f"Task {task_id} deleted."
+
+
+@tool
+async def list_tasks_due_today() -> str:
+    """List all tasks whose due date falls on today's date."""
+    now = datetime.now(tz=timezone.utc)
+    start_ms = int(datetime(now.year, now.month, now.day, tzinfo=timezone.utc).timestamp() * 1000)
+    end_ms = start_ms + 86_400_000 - 1  # last ms of today
+    result = await execute_on_client(
+        action="select",
+        table="tasks",
+        filters={"dueDateFrom": start_ms, "dueDateTo": end_ms},
+    )
+    rows = result.get("rows", [])
+    if not rows:
+        return "No tasks are due today."
+    lines = [
+        f"- {r['title']} (priority: {r['priority']}, status: {r['status']}, id: {r['id']})"
+        for r in rows
+    ]
+    return f"Tasks due today ({len(rows)}):\n" + "\n".join(lines)
+
+
+# ── Task comment tools ────────────────────────────────────────────────
+
+
+@tool
+async def list_task_comments(task_id: str) -> str:
+    """List all comments on a task by its UUID."""
+    result = await execute_on_client(
+        action="select",
+        table="taskComments",
+        filters={"taskId": task_id},
+    )
+    rows = result.get("rows", [])
+    if not rows:
+        return f"No comments found for task {task_id}."
+    lines = [f"- [{r['author']}]: {r['content']} (id: {r['id']})" for r in rows]
+    return f"Found {len(rows)} comment(s):\n" + "\n".join(lines)
+
+
+@tool
+async def add_task_comment(task_id: str, author: str, content: str) -> str:
+    """Add a comment to a task.
+    task_id: UUID of the task to comment on
+    author: name or ID of the comment author
+    content: comment text
+    """
+    result = await execute_on_client(
+        action="insert",
+        table="taskComments",
+        data={"taskId": task_id, "author": author, "content": content},
+    )
+    row = result.get("row", {})
+    row_author = row.get("author", author)
+    row_task_id = row.get("taskId") or row.get("task_id") or task_id
+    row_comment_id = row.get("id", "unknown")
+    return f"Comment added by {row_author} on task {row_task_id} (comment id: {row_comment_id})."
+
+
+@tool
+async def delete_task_comment(comment_id: str) -> str:
+    """Delete a task comment by its UUID."""
+    await execute_on_client(action="delete", table="taskComments", data={"id": comment_id})
+    return f"Comment {comment_id} deleted."
+
+
+# ── Agent ─────────────────────────────────────────────────────────────
+
+
+TASK_TOOLS: list[Any] = [
+    list_tasks,
+    create_task,
+    update_task,
+    delete_task,
+    list_tasks_due_today,
+    list_task_comments,
+    add_task_comment,
+    delete_task_comment,
+]

services/chat/app/agents/timeline_agent.py

@@ -0,0 +1,117 @@
+"""Timeline agent — project milestone management (list, create, update, delete).
+
+Adapted for Chat Service: import from app.ws_context instead of app.core.ws_context.
+"""
+
+from __future__ import annotations
+
+import re
+from typing import Any
+
+from langchain_core.tools import tool
+
+from app.ws_context import execute_on_client
+
+_UUID_RE = re.compile(
+    r"^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$"
+)
+
+
+def _is_uuid(value: str) -> bool:
+    return bool(_UUID_RE.match(value))
+
+TIMELINE_SYSTEM_PROMPT = (
+    "You are a project timeline assistant. Timelines are milestone dates that\n"
+    "track progress on a project — they are not calendar events.\n\n"
+    "Rules:\n"
+    "  - project_id is REQUIRED for every create; confirm with the user if unknown\n"
+    "  - For listing, project_id must be a UUID; never pass plain names as project_id\n"
+    "  - date is a Unix timestamp in milliseconds; convert human-readable dates\n"
+    "  - is_ai_suggested: 1 when proactively proposing a timeline, 0 otherwise\n"
+    "  - is_ai_suggested: 1 when proactively proposing a timeline, 0 otherwise\n"
+    "  - For update_timeline, use -1 for integer fields you do not want to change\n"
+    "  - Listing without a project_id returns all timelines across projects\n"
+    "  - Always echo the title and formatted date in your confirmation."
+)
+
+
+@tool
+async def list_timelines(project_id: str = "") -> str:
+    """List timelines. Provide project_id to scope to a specific project."""
+    normalized_project_id = project_id if (project_id and _is_uuid(project_id)) else ""
+    result = await execute_on_client(
+        action="select",
+        table="timelines",
+        filters={"projectId": normalized_project_id or None},
+    )
+    rows = result.get("rows", [])
+    if not rows:
+        return "No timelines found."
+    lines = [f"- {r['title']} (date: {r['date']}, id: {r['id']})" for r in rows]
+    return f"Found {len(rows)} timeline(s):\n" + "\n".join(lines)
+
+
+@tool
+async def create_timeline(
+    project_id: str,
+    title: str,
+    date: int,
+    is_ai_suggested: int = 0,
+) -> str:
+    """Create a project timeline (milestone).
+    project_id: REQUIRED UUID of the parent project
+    title: descriptive name for the milestone
+    date: Unix timestamp in milliseconds
+    is_ai_suggested: 1 if proactively suggested, 0 if user-requested
+    """
+    result = await execute_on_client(
+        action="insert",
+        table="timelines",
+        data={
+            "projectId": project_id,
+            "title": title,
+            "date": date,
+            "isAiSuggested": is_ai_suggested,
+        },
+    )
+    row = result["row"]
+    return f"Timeline created: '{row['title']}' (id: {row['id']}, date: {row['date']})"
+
+
+@tool
+async def update_timeline(
+    timeline_id: str,
+    title: str = "",
+    date: int = -1,
+) -> str:
+    """Update a timeline. Only pass fields that should change.
+    timeline_id: UUID of the timeline (required)
+    date: -1 means unchanged; any other value sets the new date (ms timestamp)
+    """
+    updates: dict[str, Any] = {}
+    if title:
+        updates["title"] = title
+    if date != -1:
+        updates["date"] = date
+    result = await execute_on_client(
+        action="update",
+        table="timelines",
+        data={"id": timeline_id, "updates": updates},
+    )
+    row = result["row"]
+    return f"Timeline updated: '{row['title']}' (id: {row['id']})"
+
+
+@tool
+async def delete_timeline(timeline_id: str) -> str:
+    """Delete a timeline permanently by its UUID."""
+    await execute_on_client(action="delete", table="timelines", data={"id": timeline_id})
+    return f"Timeline {timeline_id} deleted."
+
+
+TIMELINE_TOOLS: list[Any] = [
+    list_timelines,
+    create_timeline,
+    update_timeline,
+    delete_timeline,
+]

services/chat/app/deep_agent.py

@@ -0,0 +1,847 @@
+"""Single-agent runners for home and floating chat contexts.
+
+Adapted from app/core/deep_agent.py for the Chat Service.
+Import paths changed to use local app modules and shared/.
+"""
+
+from __future__ import annotations
+
+import json
+import logging
+import re
+from datetime import date
+from collections.abc import AsyncGenerator
+from typing import Any, Literal
+
+from langchain_core.messages import AIMessage, HumanMessage, SystemMessage, ToolMessage
+from langchain_core.tools import tool
+
+from app.agents.note_agent import NOTE_TOOLS
+from app.agents.project_agent import PROJECT_TOOLS
+from app.agents.task_agent import TASK_TOOLS
+from app.agents.timeline_agent import TIMELINE_TOOLS
+from app.llm import get_llm
+from app.memory_middleware import MemoryMiddleware
+from app.ws_context import clear_tool_result_collector, execute_on_client, set_tool_result_collector
+from shared.db import async_session
+
+logger = logging.getLogger(__name__)
+
+FloatingDomainType = Literal["task", "timeline", "project", "node"]
+FloatingDomainSection = Literal["task", "timeline", "note"]
+
+_HOME_SINGLE_AGENT_SYSTEM = (
+    "You are the home assistant with direct access to all tools: tasks, projects, notes, timelines, and memory tools. "
+    "Always use tools for factual data retrieval before answering. "
+    "When the user asks to remember, forget, or update what you know about them, use memory tools. "
+    "If context.context.resolved_project_id exists, use it as project_id for scoped list calls. "
+    "Return markdown and use tags when relevant: <project>[ids]</project>, <task>[ids]</task>, "
+    "<note>[ids]</note>, <timeline>[ids]</timeline>, <chart>{json}</chart>. "
+    "When listing tasks or timelines, each id tag must be on its own line with no prefix/suffix text. "
+    "Never put titles, priorities, or dates on the same line as <task> or <timeline> tags. "
+    "For questions about upcoming timelines (e.g. 'prossimi eventi'), include only future items in the current month unless the user asks a different range. "
+    "For upcoming tasks, after tag lines add a short recommendation based on due date and priority."
+)
+
+_FLOATING_SINGLE_AGENT_SYSTEM = (
+    "You are the floating assistant with direct access to all tools: tasks, projects, notes, timelines, and memory tools. "
+    "Stay focused on the floating scope in context.scope and answer concisely. "
+    "Return plain text only. Do not output XML/HTML-like tags such as <task>, <project>, <note>, <timeline>, or any bracketed id tag wrappers. "
+    "Always use tools for factual data retrieval before answering. "
+    "When the user asks to remember, forget, or update what you know about them, use memory tools. "
+    "If context.context.resolved_project_id exists, use it as project_id for scoped list calls. "
+)
+
+_FLOATING_DOMAIN_CLASSIFIER_SYSTEM = (
+    "You are a strict domain classifier for websocket floating requests. "
+    "Return ONLY a JSON object with keys: type, id, section. "
+    "Allowed type values: task, timeline, project, node. "
+    "Allowed section values: task, timeline, note, or null. "
+    "Rules: infer from user message intent first; do not blindly trust scope.type. "
+    "If user asks tasks/timeline/notes for a project, set type=project and section accordingly. "
+    "If project id is unknown but context.resolved_project_id exists, use it as id. "
+    "If id is unknown, use null. "
+    "No markdown, no prose, JSON only."
+)
+
+
+def _as_text(content: Any) -> str:
+    if content is None:
+        return ""
+    if isinstance(content, str):
+        return content
+    if isinstance(content, list):
+        parts: list[str] = []
+        for item in content:
+            if isinstance(item, str):
+                parts.append(item)
+            elif isinstance(item, dict):
+                text = item.get("text")
+                if isinstance(text, str):
+                    parts.append(text)
+        return "".join(parts)
+    return str(content)
+
+
+def _candidate_tokens(message: str) -> list[str]:
+    tokens = re.findall(r"[a-zA-Z0-9_-]+", message.lower())
+    return [token for token in tokens if len(token) >= 3]
+
+
+async def _resolve_project_id_from_message(message: str) -> str | None:
+    """Resolve likely project UUID from user message using client project list."""
+    try:
+        result = await execute_on_client(action="select", table="projects")
+    except Exception as exc:
+        logger.warning("deep_agent: project resolve select failed: %s", exc)
+        return None
+
+    rows = result.get("rows", [])
+    if not isinstance(rows, list) or not rows:
+        return None
+
+    tokens = _candidate_tokens(message)
+    scored: list[tuple[int, dict[str, Any]]] = []
+    for row in rows:
+        if not isinstance(row, dict):
+            continue
+        name = str(row.get("name", "")).lower()
+        score = sum(1 for token in tokens if token in name)
+        if score > 0:
+            scored.append((score, row))
+
+    if not scored:
+        return None
+
+    scored.sort(key=lambda item: item[0], reverse=True)
+    top_score = scored[0][0]
+    top_rows = [row for score, row in scored if score == top_score]
+    if len(top_rows) != 1:
+        return None
+
+    project_id = top_rows[0].get("id")
+    return project_id if isinstance(project_id, str) else None
+
+
+def _needs_project_resolution(message: str) -> bool:
+    lowered = message.lower()
+    return any(keyword in lowered for keyword in ["project", "progetto", "progetti", "whitelist"])
+
+
+async def _prepare_context(message: str, context: dict[str, Any]) -> dict[str, Any]:
+    prepared = dict(context)
+    if _needs_project_resolution(message):
+        resolved_project_id = await _resolve_project_id_from_message(message)
+        if resolved_project_id:
+            prepared["resolved_project_id"] = resolved_project_id
+            logger.info("deep_agent: resolved_project_id=%s", resolved_project_id)
+    return prepared
+
+
+def _all_tools() -> list[Any]:
+    return [*TASK_TOOLS, *PROJECT_TOOLS, *NOTE_TOOLS, *TIMELINE_TOOLS]
+
+
+def _trace_id_from_context(context: dict[str, Any]) -> str | None:
+    debug = context.get("_debug")
+    if isinstance(debug, dict):
+        request_id = debug.get("request_id")
+        if isinstance(request_id, str) and request_id:
+            return request_id
+    return None
+
+
+def _context_for_model(context: dict[str, Any]) -> dict[str, Any]:
+    sanitized = dict(context)
+    sanitized.pop("_debug", None)
+    return sanitized
+
+
+_TAG_LINE_RE = re.compile(r"<(task|timeline)>\[[^\]]+\]</\1>")
+_TIMELINE_DMY_RE = re.compile(r"(?P<d>\d{2})/(?P<m>\d{2})/(?P<y>\d{4})")
+
+
+def _is_upcoming_timeline_query(message: str) -> bool:
+    lowered = message.lower()
+    has_upcoming = "prossim" in lowered or "upcoming" in lowered or "next" in lowered
+    has_timeline_topic = any(
+        token in lowered
+        for token in ("event", "evento", "eventi", "timeline", "milestone", "scaden")
+    )
+    return has_upcoming and has_timeline_topic
+
+
+def _timeline_date_in_current_month_or_future(dmy: str) -> bool:
+    match = _TIMELINE_DMY_RE.search(dmy)
+    if not match:
+        return True
+    try:
+        parsed = date(
+            int(match.group("y")),
+            int(match.group("m")),
+            int(match.group("d")),
+        )
+    except ValueError:
+        return True
+
+    today = date.today()
+    return parsed >= today and parsed.year == today.year and parsed.month == today.month
+
+
+def _normalize_tagged_list_lines(text: str, message: str) -> str:
+    if not text:
+        return text
+
+    upcoming_timeline_only = _is_upcoming_timeline_query(message)
+    output_lines: list[str] = []
+
+    for line in text.splitlines():
+        matches = list(_TAG_LINE_RE.finditer(line))
+        if not matches:
+            output_lines.append(line)
+            continue
+
+        had_non_tag_text = _TAG_LINE_RE.sub("", line).strip(" -\t0123456789.*:)")
+        if not had_non_tag_text and len(matches) == 1:
+            tag_text = matches[0].group(0)
+            if (
+                upcoming_timeline_only
+                and "<timeline>" in tag_text
+                and not _timeline_date_in_current_month_or_future(line)
+            ):
+                continue
+            output_lines.append(tag_text)
+            continue
+
+        for match in matches:
+            tag_text = match.group(0)
+            if (
+                upcoming_timeline_only
+                and "<timeline>" in tag_text
+                and not _timeline_date_in_current_month_or_future(line)
+            ):
+                continue
+            output_lines.append(tag_text)
+
+    return "\n".join(output_lines)
+
+
+_GENERIC_TAG_RE = re.compile(r"</?(task|project|note|timeline|chart)>", re.IGNORECASE)
+_BRACKETED_ID_RE = re.compile(r"\[(?:[0-9a-fA-F-]{8,}|[A-Za-z0-9_-]{8,})\]")
+_FLOATING_EMPTY_FALLBACK = "No results found."
+
+
+def _strip_floating_markup_fragment(text: str) -> str:
+    if not text:
+        return text
+    cleaned = _GENERIC_TAG_RE.sub("", text)
+    return _BRACKETED_ID_RE.sub("", cleaned)
+
+
+def _strip_floating_markup(text: str) -> str:
+    """Ensure floating responses stay plain text with no XML-like tag wrappers."""
+    if not text:
+        return text
+
+    cleaned = _strip_floating_markup_fragment(text)
+    lines = [re.sub(r"[ \t]{2,}", " ", line).strip() for line in cleaned.splitlines()]
+    return "\n".join(line for line in lines if line)
+
+
+def _fallback_from_raw_floating_text(raw_text: str) -> str:
+    fallback = _strip_floating_markup_fragment(raw_text or "")
+    fallback = re.sub(r"[ \t]{2,}", " ", fallback).strip()
+    return fallback or _FLOATING_EMPTY_FALLBACK
+
+
+class _FloatingStreamSanitizer:
+    """Streaming sanitizer that removes floating markup without buffering the full answer."""
+
+    def __init__(self) -> None:
+        self._pending = ""
+
+    @staticmethod
+    def _split_safe_boundary(text: str) -> tuple[str, str]:
+        boundary = len(text)
+
+        last_lt = text.rfind("<")
+        if last_lt != -1 and ">" not in text[last_lt:]:
+            boundary = min(boundary, last_lt)
+
+        last_lb = text.rfind("[")
+        if last_lb != -1 and "]" not in text[last_lb:]:
+            boundary = min(boundary, last_lb)
+
+        if boundary == len(text):
+            return text, ""
+        return text[:boundary], text[boundary:]
+
+    def feed(self, chunk: str) -> str:
+        combined = f"{self._pending}{chunk}"
+        safe_text, self._pending = self._split_safe_boundary(combined)
+        return _strip_floating_markup_fragment(safe_text)
+
+    def finalize(self) -> str:
+        tail = re.sub(r"<[^>\n]*$", "", self._pending)
+        tail = re.sub(r"\[[^\]\n]*$", "", tail)
+        self._pending = ""
+        return _strip_floating_markup_fragment(tail)
+
+
+def _normalize_memory_label(path_or_label: str) -> str:
+    value = path_or_label.strip()
+    if value.startswith("/memories/"):
+        value = value[len("/memories/"):]
+    value = value.strip("/")
+    return value
+
+
+def _memory_tools(user_id: str, trace_id: str | None) -> list[Any]:
+    @tool
+    async def memory_list_blocks() -> str:
+        """List all core memory blocks currently stored for the user."""
+        logger.info("deep_agent: memory_list_blocks trace=%s user=%s", trace_id or "-", user_id)
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            blocks = await memory.list_core_blocks(user_id)
+        if not blocks:
+            return "No memory blocks found."
+        lines = [f"- {b['label']}: {b['value']}" for b in blocks]
+        return "Memory blocks:\n" + "\n".join(lines)
+
+    @tool
+    async def memory_get(path_or_label: str) -> str:
+        """Get one memory block by label or /memories/<label> path."""
+        label = _normalize_memory_label(path_or_label)
+        logger.info("deep_agent: memory_get trace=%s user=%s label=%s", trace_id or "-", user_id, label)
+        if not label:
+            return "Invalid memory label."
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            value = await memory.get_core_block(user_id, label)
+        if value is None:
+            return f"Memory block '{label}' not found."
+        return f"Memory block '{label}':\n{value}"
+
+    @tool
+    async def memory_create(path_or_label: str, value: str) -> str:
+        """Create or overwrite a memory block value by label or /memories/<label> path."""
+        label = _normalize_memory_label(path_or_label)
+        logger.info("deep_agent: memory_create trace=%s user=%s label=%s", trace_id or "-", user_id, label)
+        if not label:
+            return "Invalid memory label."
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            await memory.update_core(user_id, label, value, trace_id=trace_id)
+        return f"Memory block '{label}' saved."
+
+    @tool
+    async def memory_append(path_or_label: str, content: str) -> str:
+        """Append content to a memory block, creating it if missing."""
+        label = _normalize_memory_label(path_or_label)
+        logger.info("deep_agent: memory_append trace=%s user=%s label=%s", trace_id or "-", user_id, label)
+        if not label:
+            return "Invalid memory label."
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            await memory.append_core(user_id, label, content)
+        return f"Memory block '{label}' appended."
+
+    @tool
+    async def memory_replace(path_or_label: str, old_string: str, new_string: str) -> str:
+        """Replace one exact string in a memory block."""
+        label = _normalize_memory_label(path_or_label)
+        logger.info("deep_agent: memory_replace trace=%s user=%s label=%s", trace_id or "-", user_id, label)
+        if not label:
+            return "Invalid memory label."
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            changed = await memory.replace_core(user_id, label, old_string, new_string)
+        if not changed:
+            return f"No replacement made in '{label}' (old string not found)."
+        return f"Memory block '{label}' updated."
+
+    @tool
+    async def memory_delete(path_or_label: str) -> str:
+        """Delete a memory block by label or /memories/<label> path."""
+        label = _normalize_memory_label(path_or_label)
+        logger.info("deep_agent: memory_delete trace=%s user=%s label=%s", trace_id or "-", user_id, label)
+        if not label:
+            return "Invalid memory label."
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            deleted = await memory.delete_core(user_id, label)
+        if not deleted:
+            return f"Memory block '{label}' not found."
+        return f"Memory block '{label}' deleted."
+
+    @tool
+    async def archival_memory_insert(content: str) -> str:
+        """Insert a long-term archival memory entry."""
+        logger.info("deep_agent: archival_memory_insert trace=%s user=%s", trace_id or "-", user_id)
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            await memory.insert_archival(user_id, content, source="assistant")
+        return "Archival memory saved."
+
+    @tool
+    async def archival_memory_search(query: str, top_k: int = 5) -> str:
+        """Search long-term archival memory by semantic fallback (keyword currently)."""
+        logger.info("deep_agent: archival_memory_search trace=%s user=%s query=%s", trace_id or "-", user_id, query[:80])
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            results = await memory.search_archival(user_id, query, top_k=top_k)
+        if not results:
+            return "No archival memory results found."
+        lines = [f"- {item}" for item in results]
+        return "Archival memory results:\n" + "\n".join(lines)
+
+    @tool
+    async def conversation_search(query: str, top_k: int = 5) -> str:
+        """Search recall memory from prior episodic conversation summaries."""
+        logger.info("deep_agent: conversation_search trace=%s user=%s query=%s", trace_id or "-", user_id, query[:80])
+        async with async_session() as db:
+            memory = MemoryMiddleware(db)
+            results = await memory.search_recall(user_id, query, top_k=top_k)
+        if not results:
+            return "No recall memory results found."
+        lines = [f"- {item}" for item in results]
+        return "Recall memory results:\n" + "\n".join(lines)
+
+    return [
+        memory_list_blocks,
+        memory_get,
+        memory_create,
+        memory_append,
+        memory_replace,
+        memory_delete,
+        archival_memory_insert,
+        archival_memory_search,
+        conversation_search,
+    ]
+
+
+def _all_tools_for_user(user_id: str, trace_id: str | None) -> list[Any]:
+    return [*_all_tools(), *_memory_tools(user_id, trace_id)]
+
+
+def _detect_domain_section(message: str) -> FloatingDomainSection | None:
+    lowered = message.lower()
+    if any(keyword in lowered for keyword in ["timeline", "milestone", "release", "schedule"]):
+        return "timeline"
+    if any(keyword in lowered for keyword in ["task", "tasks", "todo", "attivit", "azione"]):
+        return "task"
+    if any(keyword in lowered for keyword in ["note", "notes", "memo", "document"]):
+        return "note"
+    return None
+
+
+def _normalize_domain_payload(payload: dict[str, Any], fallback_id: str | None) -> dict[str, str | None]:
+    type_raw = str(payload.get("type") or "").strip().lower()
+    domain_type: FloatingDomainType = "task"
+    if type_raw in {"task", "timeline", "project", "node"}:
+        domain_type = type_raw
+
+    id_value = payload.get("id")
+    domain_id = id_value if isinstance(id_value, str) and id_value.strip() else None
+    if domain_type == "project" and not domain_id:
+        domain_id = fallback_id
+
+    section_raw = payload.get("section")
+    section: FloatingDomainSection | None = None
+    if isinstance(section_raw, str):
+        section_candidate = section_raw.strip().lower()
+        if section_candidate in {"task", "timeline", "note"}:
+            section = section_candidate
+
+    if domain_type != "project":
+        section = None
+
+    return {
+        "type": domain_type,
+        "id": domain_id,
+        "section": section,
+    }
+
+
+def _parse_json_object(text: str) -> dict[str, Any] | None:
+    raw = text.strip()
+    if not raw:
+        return None
+    try:
+        parsed = json.loads(raw)
+        return parsed if isinstance(parsed, dict) else None
+    except json.JSONDecodeError:
+        pass
+
+    match = re.search(r"\{.*\}", raw, re.DOTALL)
+    if not match:
+        return None
+    try:
+        parsed = json.loads(match.group(0))
+    except json.JSONDecodeError:
+        return None
+    return parsed if isinstance(parsed, dict) else None
+
+
+def _infer_floating_domain_rule_based(message: str, context: dict[str, Any]) -> dict[str, str | None]:
+    section = _detect_domain_section(message)
+    scope = context.get("scope") if isinstance(context, dict) else None
+    resolved_project_id = context.get("resolved_project_id") if isinstance(context, dict) else None
+    project_id = resolved_project_id if isinstance(resolved_project_id, str) and resolved_project_id else None
+
+    if isinstance(scope, dict):
+        scope_type = str(scope.get("type") or "").strip().lower()
+        scope_id = scope.get("id")
+        scope_id_value = scope_id if isinstance(scope_id, str) and scope_id else None
+
+        if scope_type in {"task", "tasks"}:
+            return {"type": "task", "id": scope_id_value, "section": None}
+        if scope_type in {"project", "projects"}:
+            project_scope_id = scope_id_value or project_id
+            return {
+                "type": "project",
+                "id": project_scope_id,
+                "section": section,
+            }
+        if scope_type in {"note", "notes"}:
+            return {
+                "type": "node",
+                "id": scope_id_value,
+                "section": None,
+            }
+        if scope_type in {"timeline", "timelines"}:
+            return {"type": "timeline", "id": scope_id_value, "section": None}
+
+    lowered = message.lower()
+    if any(keyword in lowered for keyword in ["project", "progetto", "client"]) or project_id:
+        return {
+            "type": "project",
+            "id": project_id,
+            "section": section,
+        }
+    if section == "timeline":
+        return {"type": "timeline", "id": None, "section": None}
+    if section == "note":
+        return {"type": "node", "id": None, "section": None}
+    return {"type": "task", "id": None, "section": None}
+
+
+async def _infer_floating_domain(message: str, context: dict[str, Any]) -> dict[str, str | None]:
+    resolved_project_id = context.get("resolved_project_id") if isinstance(context, dict) else None
+    project_id = resolved_project_id if isinstance(resolved_project_id, str) and resolved_project_id else None
+
+    classifier_context = {
+        "scope": context.get("scope") if isinstance(context.get("scope"), dict) else None,
+        "resolved_project_id": project_id,
+    }
+
+    try:
+        llm = get_llm()
+        response = await llm.ainvoke(
+            [
+                SystemMessage(content=_FLOATING_DOMAIN_CLASSIFIER_SYSTEM),
+                HumanMessage(
+                    content=(
+                        f"Message:\n{message}\n\n"
+                        f"Context:\n{json.dumps(classifier_context, ensure_ascii=True)}"
+                    )
+                ),
+            ]
+        )
+        parsed = _parse_json_object(_as_text(response.content))
+        if parsed is not None:
+            domain = _normalize_domain_payload(parsed, project_id)
+            logger.info(
+                "deep_agent: floating_domain_classified type=%s id=%s section=%s",
+                domain.get("type"),
+                domain.get("id"),
+                domain.get("section"),
+            )
+            return domain
+        logger.warning("deep_agent: floating_domain classifier returned non-json output")
+    except Exception as exc:
+        logger.warning("deep_agent: floating_domain classifier failed: %s", exc)
+
+    return _infer_floating_domain_rule_based(message, context)
+
+
+async def _run_single_agent(
+    *,
+    user_id: str,
+    system_prompt: str,
+    message: str,
+    context: dict[str, Any],
+    max_steps: int = 6,
+) -> str:
+    trace_id = _trace_id_from_context(context)
+    llm = get_llm()
+    tools = _all_tools_for_user(user_id, trace_id)
+    model_context = _context_for_model(context)
+    logger.info("deep_agent: run_single_agent_start trace=%s user=%s", trace_id or "-", user_id)
+    llm_with_tools = llm.bind_tools(tools)
+    messages: list[Any] = [
+        SystemMessage(content=system_prompt),
+        HumanMessage(
+            content=(
+                f"User message:\n{message}\n\n"
+                f"Context:\n{json.dumps({'context': model_context}, ensure_ascii=True)[:3500]}"
+            )
+        ),
+    ]
+
+    tool_calls_count = 0
+    collected: list[dict[str, Any]] = []
+    set_tool_result_collector(collected)
+    try:
+        for _ in range(max_steps):
+            response: AIMessage = await llm_with_tools.ainvoke(messages)
+            messages.append(response)
+
+            if not response.tool_calls:
+                final_text = _as_text(response.content)
+                logger.info(
+                    "deep_agent: run_single_agent_end trace=%s user=%s tool_calls=%d response_chars=%d",
+                    trace_id or "-",
+                    user_id,
+                    tool_calls_count,
+                    len(final_text),
+                )
+                return final_text
+
+            tool_map = {tool_def.name: tool_def for tool_def in tools}
+            for call in response.tool_calls:
+                tool_calls_count += 1
+                call_id = str(call.get("id", ""))
+                call_name = str(call.get("name", ""))
+                call_args = call.get("args", {})
+                logger.info(
+                    "deep_agent: AI->Tool tool_call_id=%s tool=%s args=%s",
+                    call_id,
+                    call_name,
+                    json.dumps(call_args, ensure_ascii=True)[:800],
+                )
+
+                tool_fn = tool_map.get(call_name)
+                if tool_fn is None:
+                    tool_output = f"Unknown tool: {call_name}"
+                else:
+                    tool_output = await tool_fn.ainvoke(call_args)
+
+                logger.info(
+                    "deep_agent: Tool->AI tool_call_id=%s tool=%s output=%s",
+                    call_id,
+                    call_name,
+                    str(tool_output)[:1200],
+                )
+
+                messages.append(ToolMessage(content=str(tool_output), tool_call_id=call["id"]))
+
+        final = await llm.ainvoke(messages)
+        final_text = _as_text(final.content)
+        logger.info(
+            "deep_agent: run_single_agent_end trace=%s user=%s tool_calls=%d response_chars=%d fallback=1",
+            trace_id or "-",
+            user_id,
+            tool_calls_count,
+            len(final_text),
+        )
+        return final_text
+    finally:
+        clear_tool_result_collector()
+
+
+async def _run_single_agent_stream(
+    *,
+    user_id: str,
+    system_prompt: str,
+    message: str,
+    context: dict[str, Any],
+    max_steps: int = 6,
+) -> AsyncGenerator[tuple[str, Any], None]:
+    trace_id = _trace_id_from_context(context)
+    llm = get_llm()
+    tools = _all_tools_for_user(user_id, trace_id)
+    model_context = _context_for_model(context)
+    logger.info("deep_agent: run_single_agent_stream_start trace=%s user=%s", trace_id or "-", user_id)
+    llm_with_tools = llm.bind_tools(tools)
+    messages: list[Any] = [
+        SystemMessage(content=system_prompt),
+        HumanMessage(
+            content=(
+                f"User message:\n{message}\n\n"
+                f"Context:\n{json.dumps({'context': model_context}, ensure_ascii=True)[:3500]}"
+            )
+        ),
+    ]
+
+    tool_calls_count = 0
+    streamed_chars = 0
+    collected: list[dict[str, Any]] = []
+    set_tool_result_collector(collected)
+    try:
+        for _ in range(max_steps):
+            response: AIMessage = await llm_with_tools.ainvoke(messages)
+            messages.append(response)
+
+            if not response.tool_calls:
+                emitted_any = False
+                async for chunk in llm.astream(messages):
+                    token = _as_text(getattr(chunk, "content", ""))
+                    if token:
+                        streamed_chars += len(token)
+                        emitted_any = True
+                        yield "token", token
+
+                if not emitted_any:
+                    fallback_text = _as_text(response.content)
+                    if fallback_text:
+                        streamed_chars += len(fallback_text)
+                        yield "token", fallback_text
+                logger.info(
+                    "deep_agent: run_single_agent_stream_end trace=%s user=%s tool_calls=%d response_chars=%d",
+                    trace_id or "-",
+                    user_id,
+                    tool_calls_count,
+                    streamed_chars,
+                )
+                return
+
+            tool_map = {tool_def.name: tool_def for tool_def in tools}
+            for call in response.tool_calls:
+                tool_calls_count += 1
+                call_id = str(call.get("id", ""))
+                call_name = str(call.get("name", ""))
+                call_args = call.get("args", {})
+                logger.info(
+                    "deep_agent: AI->Tool tool_call_id=%s tool=%s args=%s",
+                    call_id,
+                    call_name,
+                    json.dumps(call_args, ensure_ascii=True)[:800],
+                )
+
+                tool_fn = tool_map.get(call_name)
+                if tool_fn is None:
+                    tool_output = f"Unknown tool: {call_name}"
+                else:
+                    tool_output = await tool_fn.ainvoke(call_args)
+
+                logger.info(
+                    "deep_agent: Tool->AI tool_call_id=%s tool=%s output=%s",
+                    call_id,
+                    call_name,
+                    str(tool_output)[:1200],
+                )
+
+                messages.append(ToolMessage(content=str(tool_output), tool_call_id=call["id"]))
+
+        async for chunk in llm.astream(messages):
+            token = _as_text(getattr(chunk, "content", ""))
+            if token:
+                streamed_chars += len(token)
+                yield "token", token
+        logger.info(
+            "deep_agent: run_single_agent_stream_end trace=%s user=%s tool_calls=%d response_chars=%d fallback=1",
+            trace_id or "-",
+            user_id,
+            tool_calls_count,
+            streamed_chars,
+        )
+    finally:
+        clear_tool_result_collector()
+
+
+async def run_home(user_id: str, message: str, context: dict[str, Any]) -> str:
+    prepared_context = await _prepare_context(message, context)
+    response = await _run_single_agent(
+        user_id=user_id,
+        system_prompt=_HOME_SINGLE_AGENT_SYSTEM,
+        message=message,
+        context=prepared_context,
+    )
+    return _normalize_tagged_list_lines(response, message)
+
+
+async def run_floating(user_id: str, message: str, context: dict[str, Any]) -> tuple[str, dict[str, str | None]]:
+    prepared_context = await _prepare_context(message, context)
+    domain = await _infer_floating_domain(message, prepared_context)
+    response = await _run_single_agent(
+        user_id=user_id,
+        system_prompt=_FLOATING_SINGLE_AGENT_SYSTEM,
+        message=message,
+        context=prepared_context,
+    )
+    sanitized = _strip_floating_markup(response)
+    if not sanitized and response:
+        sanitized = _fallback_from_raw_floating_text(response)
+    return sanitized, domain
+
+
+async def run_home_stream(
+    user_id: str,
+    message: str,
+    context: dict[str, Any],
+) -> AsyncGenerator[tuple[str, Any], None]:
+    prepared_context = await _prepare_context(message, context)
+    text_chunks: list[str] = []
+    async for event in _run_single_agent_stream(
+        user_id=user_id,
+        system_prompt=_HOME_SINGLE_AGENT_SYSTEM,
+        message=message,
+        context=prepared_context,
+    ):
+        event_type, data = event
+        if event_type != "token":
+            yield event
+            continue
+        text_chunks.append(str(data or ""))
+
+    normalized = _normalize_tagged_list_lines("".join(text_chunks), message)
+    if normalized:
+        yield "token", normalized
+
+
+async def run_floating_stream(
+    user_id: str,
+    message: str,
+    context: dict[str, Any],
+) -> AsyncGenerator[tuple[str, Any], None]:
+    prepared_context = await _prepare_context(message, context)
+    domain = await _infer_floating_domain(message, prepared_context)
+    yield "floating_domain", domain
+
+    sanitizer = _FloatingStreamSanitizer()
+    emitted_sanitized = False
+    raw_chunks: list[str] = []
+    async for event in _run_single_agent_stream(
+        user_id=user_id,
+        system_prompt=_FLOATING_SINGLE_AGENT_SYSTEM,
+        message=message,
+        context=prepared_context,
+    ):
+        event_type, data = event
+        if event_type != "token":
+            yield event
+            continue
+
+        raw_chunk = str(data or "")
+        raw_chunks.append(raw_chunk)
+        sanitized_chunk = sanitizer.feed(raw_chunk)
+        if sanitized_chunk:
+            emitted_sanitized = True
+            yield "token", sanitized_chunk
+
+    tail = sanitizer.finalize()
+    if tail:
+        emitted_sanitized = True
+        yield "token", tail
+
+    if not emitted_sanitized and raw_chunks:
+        yield "token", _fallback_from_raw_floating_text("".join(raw_chunks))
+
+
+async def update_core_memory(user_id: str, key: str, value: str) -> None:
+    """Compatibility helper kept for callers that expect explicit memory update API."""
+    async with async_session() as db:
+        memory = MemoryMiddleware(db)
+        await memory.update_core(user_id, key, value)

services/chat/app/llm.py

@@ -0,0 +1,77 @@
+"""LLM factory — centralised model instantiation via LiteLLM.
+
+Adapted from app/core/llm.py for the Chat Service.
+Uses shared.config.settings instead of app.config.settings.
+"""
+
+from __future__ import annotations
+
+import os
+import warnings
+
+from openai import AsyncOpenAI
+import litellm
+
+from langchain_openai import ChatOpenAI
+from langchain_litellm import ChatLiteLLM
+
+from shared.config import settings
+
+litellm.drop_params = True
+
+warnings.filterwarnings(
+    "ignore",
+    message=r"PydanticSerializationUnexpectedValue\(Expected `ResponseAPIUsage`",
+    category=UserWarning,
+)
+
+
+def _api_key_for_model(model: str) -> str | None:
+    if model.startswith("anthropic/"):
+        return settings.ANTHROPIC_API_KEY or None
+    if model.startswith("gemini/") or model.startswith("google/"):
+        return settings.GOOGLE_API_KEY or None
+    if model.startswith("cerebras/"):
+        return settings.CEREBRAS_API_KEY or None
+    if model.startswith("github_copilot/"):
+        return None
+    return settings.OPENAI_API_KEY or None
+
+
+def get_llm(
+    *,
+    model: str | None = None,
+    temperature: float = 0,
+) -> ChatOpenAI | ChatLiteLLM:
+    model = model or settings.LLM_MODEL
+
+    if settings.GITHUB_COPILOT_TOKEN_DIR:
+        os.environ.setdefault("GITHUB_COPILOT_TOKEN_DIR", settings.GITHUB_COPILOT_TOKEN_DIR)
+
+    if "/" in model:
+        return ChatLiteLLM(model=model, temperature=temperature)
+
+    return ChatOpenAI(
+        model=model,
+        temperature=temperature,
+        api_key=_api_key_for_model(model),
+    )
+
+
+def get_router_llm(
+    *,
+    temperature: float = 0,
+) -> ChatOpenAI | ChatLiteLLM:
+    return get_llm(model=settings.LLM_ROUTER_MODEL, temperature=temperature)
+
+
+async def embed(text: str) -> list[float]:
+    model = settings.LLM_EMBED_MODEL
+
+    if model.startswith("github_copilot/") or "/" in model:
+        response = await litellm.aembedding(model=model, input=[text])
+        return response.data[0]["embedding"]
+
+    client = AsyncOpenAI(api_key=settings.OPENAI_API_KEY)
+    response = await client.embeddings.create(model=model, input=text)
+    return response.data[0].embedding

services/chat/app/main.py

@@ -0,0 +1,71 @@
+"""Chat Service — LLM orchestration, domain agents, memory.
+
+Consumes chat requests from Redis, executes deep_agent (home/floating),
+streams responses back via Redis pub/sub to WS Gateway.
+
+Owns: memory_core, memory_associative, memory_episodic, memory_proactive tables.
+"""
+
+from contextlib import asynccontextmanager
+import logging
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from shared.config import settings
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+)
+logging.getLogger("sqlalchemy.engine").setLevel(logging.WARNING)
+logging.getLogger("sqlalchemy.pool").setLevel(logging.WARNING)
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    # Start Redis consumer in background
+    from app.redis_consumer import start_consumer
+
+    consumer_task = start_consumer()
+    yield
+    consumer_task.cancel()
+
+    from shared.db import engine
+
+    await engine.dispose()
+
+    from shared.redis import redis_client
+
+    await redis_client.aclose()
+
+
+def create_app() -> FastAPI:
+    app = FastAPI(
+        title="Adiuva Chat Service",
+        version="0.1.0",
+        docs_url="/docs" if settings.ENV == "dev" else None,
+        redoc_url=None,
+        lifespan=lifespan,
+    )
+
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=settings.CORS_ORIGINS,
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
+    from app.routes import router
+
+    app.include_router(router, prefix="/api/v1")
+
+    @app.get("/api/v1/health", tags=["health"])
+    async def health() -> dict:
+        return {"status": "ok", "service": "chat", "version": app.version}
+
+    return app
+
+
+app = create_app()

services/chat/app/memory_middleware.py

@@ -0,0 +1,295 @@
+"""Memory Middleware — adapted for Chat Service.
+
+Uses shared.models instead of app.models. Otherwise identical to the
+monolith's app/core/memory_middleware.py.
+"""
+
+from __future__ import annotations
+
+import logging
+import uuid
+from typing import Any
+
+from cryptography.fernet import Fernet, InvalidToken
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from shared.models import (
+    MemoryAssociative,
+    MemoryCore,
+    MemoryEpisodic,
+    MemoryProactive,
+    User,
+)
+
+logger = logging.getLogger(__name__)
+
+_ASSOCIATIVE_TOP_K = 5
+_EPISODIC_RECENT_N = 10
+_PROACTIVE_CONFIDENCE_THRESHOLD = 0.6
+
+
+class MemoryMiddleware:
+
+    def __init__(self, db: AsyncSession) -> None:
+        self._db = db
+
+    async def enrich_context(
+        self,
+        user_id: str,
+        message: str,
+        trace_id: str | None = None,
+        session_id: str | None = None,
+    ) -> dict[str, Any]:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return {}
+
+        core = await self._load_core(user_id, fernet)
+        associative = await self._load_associative(user_id, message, fernet)
+        episodic = await self._load_episodic(user_id, fernet, session_id=session_id)
+        proactive = await self._load_proactive(user_id, fernet)
+
+        logger.info(
+            "memory: enrich_context trace=%s user=%s core=%d assoc=%d episodic=%d proactive=%d",
+            trace_id or "-", user_id, len(core), len(associative), len(episodic), len(proactive),
+        )
+
+        return {
+            "core_memory": core,
+            "associative_memory": associative,
+            "episodic_memory": episodic,
+            "proactive_hints": proactive,
+        }
+
+    async def store_episode(
+        self, user_id: str, session_id: str, message: str, response: str,
+        trace_id: str | None = None,
+    ) -> None:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return
+
+        summary = f"User: {message[:200]}\nAssistant: {response[:200]}"
+        encrypted = _encrypt(fernet, summary)
+
+        row = MemoryEpisodic(
+            id=str(uuid.uuid4()),
+            user_id=user_id,
+            summary_encrypted=encrypted,
+            session_id=session_id,
+        )
+        self._db.add(row)
+        try:
+            await self._db.commit()
+        except Exception as exc:
+            logger.error("memory: store_episode failed user=%s: %s", user_id, exc)
+            await self._db.rollback()
+
+    async def update_core(self, user_id: str, key: str, value: str, trace_id: str | None = None) -> None:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return
+
+        encrypted = _encrypt(fernet, value)
+        result = await self._db.execute(
+            select(MemoryCore).where(MemoryCore.user_id == user_id, MemoryCore.key == key)
+        )
+        existing = result.scalar_one_or_none()
+        if existing is not None:
+            existing.value_encrypted = encrypted
+        else:
+            self._db.add(MemoryCore(
+                id=str(uuid.uuid4()), user_id=user_id, key=key, value_encrypted=encrypted,
+            ))
+        try:
+            await self._db.commit()
+        except Exception as exc:
+            logger.error("memory: update_core failed user=%s key=%s: %s", user_id, key, exc)
+            await self._db.rollback()
+
+    async def list_core_blocks(self, user_id: str) -> list[dict[str, str]]:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return []
+        result = await self._db.execute(
+            select(MemoryCore).where(MemoryCore.user_id == user_id).order_by(MemoryCore.key.asc())
+        )
+        out: list[dict[str, str]] = []
+        for row in result.scalars().all():
+            plaintext = _safe_decrypt(fernet, row.value_encrypted)
+            if plaintext is not None:
+                out.append({"label": row.key, "value": plaintext})
+        return out
+
+    async def get_core_block(self, user_id: str, label: str) -> str | None:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return None
+        result = await self._db.execute(
+            select(MemoryCore).where(MemoryCore.user_id == user_id, MemoryCore.key == label)
+        )
+        row = result.scalar_one_or_none()
+        if row is None:
+            return None
+        return _safe_decrypt(fernet, row.value_encrypted)
+
+    async def delete_core(self, user_id: str, label: str) -> bool:
+        result = await self._db.execute(
+            select(MemoryCore).where(MemoryCore.user_id == user_id, MemoryCore.key == label)
+        )
+        row = result.scalar_one_or_none()
+        if row is None:
+            return False
+        await self._db.delete(row)
+        try:
+            await self._db.commit()
+            return True
+        except Exception as exc:
+            logger.error("memory: delete_core failed user=%s label=%s: %s", user_id, label, exc)
+            await self._db.rollback()
+            return False
+
+    async def append_core(self, user_id: str, label: str, content: str) -> None:
+        current = await self.get_core_block(user_id, label)
+        if current is None:
+            await self.update_core(user_id, label, content)
+            return
+        await self.update_core(user_id, label, f"{current}\n{content}")
+
+    async def replace_core(self, user_id: str, label: str, old: str, new: str) -> bool:
+        current = await self.get_core_block(user_id, label)
+        if current is None or old not in current:
+            return False
+        await self.update_core(user_id, label, current.replace(old, new, 1))
+        return True
+
+    async def insert_archival(self, user_id: str, content: str, source: str = "manual") -> None:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return
+        encrypted = _encrypt(fernet, content)
+        row = MemoryAssociative(
+            id=str(uuid.uuid4()), user_id=user_id,
+            content_encrypted=encrypted, embedding=None,
+            entity_type=source, entity_id=None,
+        )
+        self._db.add(row)
+        try:
+            await self._db.commit()
+        except Exception as exc:
+            logger.error("memory: insert_archival failed user=%s: %s", user_id, exc)
+            await self._db.rollback()
+
+    async def search_archival(self, user_id: str, query: str, top_k: int = 5) -> list[str]:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return []
+        result = await self._db.execute(
+            select(MemoryAssociative).where(MemoryAssociative.user_id == user_id)
+            .order_by(MemoryAssociative.updated_at.desc()).limit(100)
+        )
+        needle = query.strip().lower()
+        out: list[str] = []
+        for row in result.scalars().all():
+            plaintext = _safe_decrypt(fernet, row.content_encrypted)
+            if plaintext is None:
+                continue
+            if not needle or needle in plaintext.lower():
+                out.append(plaintext)
+            if len(out) >= max(top_k, 1):
+                break
+        return out
+
+    async def search_recall(self, user_id: str, query: str, top_k: int = 5) -> list[str]:
+        fernet = await self._get_fernet(user_id)
+        if fernet is None:
+            return []
+        result = await self._db.execute(
+            select(MemoryEpisodic).where(MemoryEpisodic.user_id == user_id)
+            .order_by(MemoryEpisodic.created_at.desc()).limit(100)
+        )
+        needle = query.strip().lower()
+        out: list[str] = []
+        for row in result.scalars().all():
+            plaintext = _safe_decrypt(fernet, row.summary_encrypted)
+            if plaintext is None:
+                continue
+            if not needle or needle in plaintext.lower():
+                out.append(plaintext)
+            if len(out) >= max(top_k, 1):
+                break
+        return out
+
+    # ── Private ───────────────────────────────────────────────────────
+
+    async def _get_fernet(self, user_id: str) -> Fernet | None:
+        result = await self._db.execute(select(User).where(User.id == user_id))
+        user = result.scalar_one_or_none()
+        if user is None or not user.encryption_key:
+            logger.warning("memory: no encryption_key for user=%s", user_id)
+            return None
+        return Fernet(user.encryption_key.encode())
+
+    async def _load_core(self, user_id: str, fernet: Fernet) -> dict[str, str]:
+        result = await self._db.execute(
+            select(MemoryCore).where(MemoryCore.user_id == user_id)
+        )
+        out: dict[str, str] = {}
+        for row in result.scalars().all():
+            plaintext = _safe_decrypt(fernet, row.value_encrypted)
+            if plaintext is not None:
+                out[row.key] = plaintext
+        return out
+
+    async def _load_associative(self, user_id: str, message: str, fernet: Fernet) -> list[str]:
+        result = await self._db.execute(
+            select(MemoryAssociative).where(MemoryAssociative.user_id == user_id)
+            .order_by(MemoryAssociative.updated_at.desc()).limit(_ASSOCIATIVE_TOP_K)
+        )
+        out: list[str] = []
+        for row in result.scalars().all():
+            plaintext = _safe_decrypt(fernet, row.content_encrypted)
+            if plaintext is not None:
+                out.append(plaintext)
+        return out
+
+    async def _load_episodic(self, user_id: str, fernet: Fernet, session_id: str | None = None) -> list[str]:
+        query = select(MemoryEpisodic).where(MemoryEpisodic.user_id == user_id)
+        if session_id:
+            query = query.where(MemoryEpisodic.session_id == session_id)
+        result = await self._db.execute(
+            query.order_by(MemoryEpisodic.created_at.desc()).limit(_EPISODIC_RECENT_N)
+        )
+        out: list[str] = []
+        for row in result.scalars().all():
+            plaintext = _safe_decrypt(fernet, row.summary_encrypted)
+            if plaintext is not None:
+                out.append(plaintext)
+        return out
+
+    async def _load_proactive(self, user_id: str, fernet: Fernet) -> list[str]:
+        result = await self._db.execute(
+            select(MemoryProactive).where(
+                MemoryProactive.user_id == user_id,
+                MemoryProactive.confidence >= _PROACTIVE_CONFIDENCE_THRESHOLD,
+            ).order_by(MemoryProactive.confidence.desc())
+        )
+        out: list[str] = []
+        for row in result.scalars().all():
+            plaintext = _safe_decrypt(fernet, row.pattern_encrypted)
+            if plaintext is not None:
+                out.append(plaintext)
+        return out
+
+
+def _encrypt(fernet: Fernet, plaintext: str) -> str:
+    return fernet.encrypt(plaintext.encode()).decode()
+
+
+def _safe_decrypt(fernet: Fernet, ciphertext: str) -> str | None:
+    try:
+        return fernet.decrypt(ciphertext.encode()).decode()
+    except (InvalidToken, Exception) as exc:
+        logger.warning("memory: decrypt failed: %s", exc)
+        return None

services/chat/app/output_formatter.py

@@ -0,0 +1,50 @@
+"""Output formatter for deep-agent stream events — Chat Service copy.
+
+Converts (event_type, data) tuples into WebSocket frame Pydantic models.
+"""
+
+from __future__ import annotations
+
+from collections.abc import AsyncGenerator
+from typing import Any
+
+from shared.schemas import WsFloatingDomain, WsStreamEnd, WsStreamStart, WsStreamText
+
+WsFrame = WsStreamStart | WsStreamText | WsStreamEnd | WsFloatingDomain
+
+
+class StreamFormatter:
+    """Convert `(event_type, data)` stream events into websocket frame models."""
+
+    def __init__(self, request_id: str) -> None:
+        self.request_id = request_id
+
+    async def format(
+        self,
+        event_stream: AsyncGenerator[tuple[str, Any], None],
+    ) -> AsyncGenerator[WsFrame, None]:
+        started = False
+
+        async for event_type, data in event_stream:
+            if event_type == "floating_domain":
+                if isinstance(data, dict):
+                    yield WsFloatingDomain(
+                        request_id=self.request_id,
+                        domain=data,
+                    )
+                continue
+
+            if event_type != "token":
+                continue
+
+            if not started:
+                yield WsStreamStart(request_id=self.request_id)
+                started = True
+
+            text = str(data or "")
+            if text:
+                yield WsStreamText(request_id=self.request_id, chunk=text)
+
+        if not started:
+            yield WsStreamStart(request_id=self.request_id)
+        yield WsStreamEnd(request_id=self.request_id)

services/chat/app/redis_consumer.py

@@ -0,0 +1,170 @@
+"""Redis consumer — listens for chat requests and dispatches to deep_agent.
+
+Subscribes to a Redis pattern channel chat:request:* so it receives
+requests for ALL users. Each request is processed in a separate asyncio task.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import json
+import logging
+from uuid import uuid4
+
+from shared.db import async_session
+from shared.redis import redis_client, ws_out_channel
+
+from app.deep_agent import run_floating_stream, run_home_stream
+from app.memory_middleware import MemoryMiddleware
+from app.output_formatter import StreamFormatter
+from app.ws_context import clear_current_user, set_current_user
+
+logger = logging.getLogger(__name__)
+
+
+def start_consumer() -> asyncio.Task:
+    """Start the Redis consumer as a background asyncio task."""
+    return asyncio.create_task(_consumer_loop())
+
+
+async def _consumer_loop() -> None:
+    """Subscribe to chat:request:* and dispatch incoming frames."""
+    pubsub = redis_client.pubsub()
+    await pubsub.psubscribe("chat:request:*")
+    logger.info("redis_consumer: subscribed to chat:request:*")
+
+    try:
+        while True:
+            message = await pubsub.get_message(
+                ignore_subscribe_messages=True, timeout=1.0
+            )
+            if message is not None and message["type"] == "pmessage":
+                frame = json.loads(message["data"])
+                asyncio.create_task(_dispatch(frame))
+            else:
+                await asyncio.sleep(0.01)
+    except asyncio.CancelledError:
+        logger.info("redis_consumer: shutting down")
+    finally:
+        await pubsub.punsubscribe()
+        await pubsub.aclose()
+
+
+async def _dispatch(frame: dict) -> None:
+    """Route a chat request frame to the appropriate handler."""
+    frame_type = frame.get("type")
+    user_id = frame.get("user_id")
+
+    if not user_id:
+        logger.warning("redis_consumer: frame missing user_id: %s", frame.get("type"))
+        return
+
+    if frame_type == "home_request":
+        await _handle_home_request(user_id, frame)
+    elif frame_type == "floating_request":
+        await _handle_floating_request(user_id, frame)
+    else:
+        logger.debug("redis_consumer: unknown frame type %r", frame_type)
+
+
+async def _publish_frame(user_id: str, frame_data: str) -> None:
+    """Publish a frame to ws:out:{user_id} for the WS Gateway to forward."""
+    channel = ws_out_channel(user_id)
+    await redis_client.publish(channel, frame_data)
+
+
+async def _handle_home_request(user_id: str, frame: dict) -> None:
+    """Process a home_request — enrich with memory, run deep_agent, stream results."""
+    request_id = frame.get("request_id") or str(uuid4())
+    message: str = frame.get("message", "")
+    session_id: str = frame.get("session_id") or str(uuid4())
+
+    logger.info(
+        "redis_consumer: home_request user=%s req=%s msg=%s",
+        user_id, request_id, message[:200],
+    )
+
+    # Enrich with memory context
+    async with async_session() as db:
+        memory = MemoryMiddleware(db)
+        memory_context = await memory.enrich_context(
+            user_id, message,
+            trace_id=request_id, session_id=session_id,
+        )
+
+    context: dict = {
+        "conversation_history": frame.get("conversation_history", []),
+        "_debug": {"request_id": request_id, "session_id": session_id, "user_id": user_id},
+        **memory_context,
+    }
+
+    set_current_user(user_id)
+    response_chunks: list[str] = []
+    try:
+        event_stream = run_home_stream(user_id, message, context)
+        formatter = StreamFormatter(request_id=request_id)
+        async for ws_frame in formatter.format(event_stream):
+            await _publish_frame(user_id, ws_frame.model_dump_json())
+            if hasattr(ws_frame, "chunk"):
+                response_chunks.append(ws_frame.chunk)
+    except Exception as exc:
+        logger.error("redis_consumer: home_request failed user=%s req=%s: %s", user_id, request_id, exc)
+    finally:
+        clear_current_user()
+
+    # Store episode
+    async with async_session() as db:
+        memory = MemoryMiddleware(db)
+        await memory.store_episode(
+            user_id, session_id, message, "".join(response_chunks),
+            trace_id=request_id,
+        )
+
+
+async def _handle_floating_request(user_id: str, frame: dict) -> None:
+    """Process a floating_request — enrich with memory, run deep_agent, stream results."""
+    request_id = frame.get("request_id") or str(uuid4())
+    message: str = frame.get("message", "")
+    session_id: str = frame.get("session_id") or str(uuid4())
+    scope: dict = frame.get("scope", {})
+
+    logger.info(
+        "redis_consumer: floating_request user=%s req=%s scope=%s msg=%s",
+        user_id, request_id, json.dumps(scope)[:200], message[:200],
+    )
+
+    # Enrich with memory context
+    async with async_session() as db:
+        memory = MemoryMiddleware(db)
+        memory_context = await memory.enrich_context(
+            user_id, message,
+            trace_id=request_id, session_id=session_id,
+        )
+
+    context: dict = {
+        "scope": scope,
+        "_debug": {"request_id": request_id, "session_id": session_id, "user_id": user_id},
+        **memory_context,
+    }
+
+    set_current_user(user_id)
+    response_chunks: list[str] = []
+    try:
+        event_stream = run_floating_stream(user_id, message, context)
+        formatter = StreamFormatter(request_id=request_id)
+        async for ws_frame in formatter.format(event_stream):
+            await _publish_frame(user_id, ws_frame.model_dump_json())
+            if hasattr(ws_frame, "chunk"):
+                response_chunks.append(ws_frame.chunk)
+    except Exception as exc:
+        logger.error("redis_consumer: floating_request failed user=%s req=%s: %s", user_id, request_id, exc)
+    finally:
+        clear_current_user()
+
+    # Store episode
+    async with async_session() as db:
+        memory = MemoryMiddleware(db)
+        await memory.store_episode(
+            user_id, session_id, message, "".join(response_chunks),
+            trace_id=request_id,
+        )

services/chat/app/routes.py

@@ -0,0 +1,37 @@
+"""Chat REST route — POST /chat fallback when WS is unavailable."""
+
+from __future__ import annotations
+
+from fastapi import APIRouter, Request
+from fastapi.responses import JSONResponse
+
+from shared.schemas import ChatRequest
+
+from app.deep_agent import run_home
+from app.ws_context import clear_current_user, set_current_user
+
+router = APIRouter(prefix="/chat", tags=["chat"])
+
+
+@router.post("")
+async def chat(body: ChatRequest, request: Request) -> JSONResponse:
+    """REST fallback for home chat.
+
+    In the microservices setup, Traefik ForwardAuth has already validated
+    the JWT and injected X-User-Id / X-User-Email / X-User-Tier headers.
+    """
+    user_id = request.headers.get("X-User-Id", "")
+    if not user_id:
+        return JSONResponse(status_code=401, content={"detail": "Missing X-User-Id header"})
+
+    set_current_user(user_id)
+    try:
+        response = await run_home(
+            user_id=user_id,
+            message=body.message,
+            context=body.context.model_dump(),
+        )
+    finally:
+        clear_current_user()
+
+    return JSONResponse(content={"response": response})

services/chat/app/ws_context.py

@@ -0,0 +1,115 @@
+"""WebSocket context for Chat Service — Redis-based tool call round-trip.
+
+Replaces the monolith's ws_context.py. Instead of calling Electron directly
+via WebSocket, this publishes tool_call frames to Redis (ws:out:{user_id})
+and awaits the result via BRPOP on tool:result:{call_id}.
+"""
+
+from __future__ import annotations
+
+import json
+import logging
+from contextvars import ContextVar
+from typing import Any
+from uuid import uuid4
+
+from shared.redis import redis_client, tool_result_key, ws_out_channel
+
+logger = logging.getLogger(__name__)
+
+_TOOL_CALL_TIMEOUT = 30  # seconds — BRPOP timeout
+
+# Per-request user_id context var (set before agent runs)
+_current_user_id: ContextVar[str | None] = ContextVar("_current_user_id", default=None)
+
+# Optional collector for debug
+_tool_result_collector: ContextVar[list[dict] | None] = ContextVar(
+    "_tool_result_collector", default=None
+)
+
+
+def set_current_user(user_id: str) -> None:
+    _current_user_id.set(user_id)
+
+
+def clear_current_user() -> None:
+    _current_user_id.set(None)
+
+
+def set_tool_result_collector(lst: list[dict]) -> None:
+    _tool_result_collector.set(lst)
+
+
+def clear_tool_result_collector() -> None:
+    _tool_result_collector.set(None)
+
+
+async def execute_on_client(
+    action: str,
+    table: str | None = None,
+    data: dict[str, Any] | None = None,
+    filters: dict[str, Any] | None = None,
+    vector: list[float] | None = None,
+    limit: int | None = None,
+) -> dict[str, Any]:
+    """Send a tool_call to Electron via Redis and await the result.
+
+    1. Build tool_call payload
+    2. Publish to ws:out:{user_id} (WS Gateway forwards to Electron)
+    3. BRPOP on tool:result:{call_id} (WS Gateway pushes when Electron replies)
+    4. Return result dict
+
+    Raises RuntimeError if no user_id is set or if the call times out.
+    """
+    user_id = _current_user_id.get()
+    if not user_id:
+        raise RuntimeError(
+            "execute_on_client() called without a user_id — "
+            "set_current_user() must be called first."
+        )
+
+    call_id = str(uuid4())
+    payload: dict[str, Any] = {
+        "type": "tool_call",
+        "id": call_id,
+        "action": action,
+    }
+    if table is not None:
+        payload["table"] = table
+    if data is not None:
+        payload["data"] = data
+    if filters is not None:
+        payload["filters"] = {k: v for k, v in filters.items() if v is not None}
+    if vector is not None:
+        payload["vector"] = vector
+    if limit is not None:
+        payload["limit"] = limit
+
+    # Publish tool_call to WS Gateway → Electron
+    channel = ws_out_channel(user_id)
+    await redis_client.publish(channel, json.dumps(payload))
+
+    # Wait for Electron's tool_result
+    result_key = tool_result_key(call_id)
+    response = await redis_client.brpop(result_key, timeout=_TOOL_CALL_TIMEOUT)
+
+    if response is None:
+        raise RuntimeError(
+            f"Tool call {call_id} timed out after {_TOOL_CALL_TIMEOUT}s — "
+            f"device may be offline or unresponsive."
+        )
+
+    # response is (key, value) tuple
+    _, raw = response
+    result = json.loads(raw)
+
+    # Collect for debug if requested
+    collector = _tool_result_collector.get(None)
+    if collector is not None:
+        collector.append({
+            "action": action,
+            "table": table,
+            "data": result,
+        })
+
+    return result

services/chat/requirements.txt

@@ -0,0 +1,16 @@
+fastapi>=0.115.0
+uvicorn[standard]>=0.34.0
+gunicorn>=22.0.0
+pydantic>=2.10.0
+pydantic-settings>=2.7.0
+sqlalchemy>=2.0.0
+asyncpg>=0.30.0
+redis>=5.0.0
+cryptography>=42.0.0
+python-dotenv>=1.0.0
+langchain-core>=0.3.0
+langchain-openai>=0.3.0
+langchain-litellm>=0.3.0
+litellm>=1.50.0
+openai>=1.50.0
+httpx>=0.27.0

services/ws-gateway/Dockerfile

@@ -0,0 +1,36 @@
+# ── builder ──────────────────────────────────────────────────────────────────
+FROM python:3.12-slim AS builder
+
+WORKDIR /build
+
+COPY services/ws-gateway/requirements.txt ./requirements.txt
+RUN pip install --upgrade pip && \
+    pip install --no-cache-dir --prefix=/install -r requirements.txt
+
+# ── runtime ──────────────────────────────────────────────────────────────────
+FROM python:3.12-slim AS runtime
+
+RUN addgroup --system appgroup && adduser --system --ingroup appgroup appuser
+
+WORKDIR /app
+
+COPY --from=builder /install /usr/local
+
+# Shared module
+COPY shared/ shared/
+
+# Service source
+COPY services/ws-gateway/app/ app/
+
+RUN chown -R appuser:appgroup /app
+
+USER appuser
+
+EXPOSE 8000
+
+# Single worker — each instance handles many WS connections via asyncio
+CMD ["gunicorn", "app.main:app", \
+     "-k", "uvicorn.workers.UvicornWorker", \
+     "--bind", "0.0.0.0:8000", \
+     "--workers", "1", \
+     "--timeout", "0"]

services/ws-gateway/app/handler.py

@@ -0,0 +1,173 @@
+"""WebSocket handler — device connection lifecycle.
+
+Accepts Electron WS connections, authenticates JWT, registers device in Redis,
+and runs two concurrent loops:
+  1. Message loop: receive frames from Electron, route to Redis
+  2. Outbound loop: subscribe to Redis ws:out:{user_id}, forward to Electron
+  3. Heartbeat loop: ping every 30s
+
+No business logic lives here — the handler is a JSON frame router.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import json
+import logging
+from uuid import uuid4
+
+from fastapi import APIRouter, WebSocket, WebSocketDisconnect
+from jose import JWTError, jwt
+
+from shared.config import settings
+from shared.schemas import WsFrameType
+
+from app.redis_bridge import (
+    publish_batch_request,
+    publish_chat_request,
+    push_tool_result,
+    register_device,
+    set_gateway_id,
+    subscribe_outbound,
+    unregister_device,
+)
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/ws", tags=["ws-gateway"])
+
+_HEARTBEAT_INTERVAL = 30  # seconds
+
+# Set a unique gateway instance ID on module load
+set_gateway_id(str(uuid4()))
+
+
+@router.websocket("/device")
+async def device_ws(websocket: WebSocket) -> None:
+    """Persistent WebSocket endpoint for Electron device connections."""
+
+    # ── 1. Authenticate via ?token= query parameter ──────────────────
+    token = websocket.query_params.get("token", "")
+    try:
+        payload = jwt.decode(
+            token,
+            settings.JWT_PUBLIC_KEY,
+            algorithms=["RS256"],
+        )
+        user_id: str | None = payload.get("sub")
+        email: str | None = payload.get("email")
+        if not user_id:
+            raise JWTError("missing sub")
+    except JWTError:
+        await websocket.close(code=1008)
+        return
+
+    await websocket.accept()
+
+    # ── 2. Await device_hello frame ──────────────────────────────────
+    try:
+        raw = await asyncio.wait_for(websocket.receive_text(), timeout=15.0)
+    except (asyncio.TimeoutError, WebSocketDisconnect):
+        await websocket.close(code=1008)
+        return
+
+    try:
+        hello = json.loads(raw)
+        if hello.get("type") != WsFrameType.device_hello:
+            raise ValueError("expected device_hello as first frame")
+        device_id: str = hello["device_id"]
+        agent_ids: list[str] = hello.get("agent_ids", [])
+    except (KeyError, ValueError, json.JSONDecodeError) as exc:
+        logger.warning("handler: invalid device_hello user=%s: %s", user_id, exc)
+        await websocket.close(code=1008)
+        return
+
+    # ── 3. Register device in Redis ──────────────────────────────────
+    await register_device(user_id, device_id)
+    logger.info("handler: connected user=%s device=%s agents=%s", user_id, device_id, agent_ids)
+
+    # Notify downstream services that device is online (for agent trigger)
+    await publish_batch_request(user_id, {
+        "type": "device_online",
+        "user_id": user_id,
+        "device_id": device_id,
+        "agent_ids": agent_ids,
+    })
+
+    # ── 4. Subscribe to outbound Redis channel ───────────────────────
+    pubsub = await subscribe_outbound(user_id)
+
+    # ── 5. Run concurrent loops ──────────────────────────────────────
+    try:
+        await asyncio.gather(
+            _inbound_loop(websocket, user_id),
+            _outbound_loop(websocket, pubsub),
+            _heartbeat_loop(websocket),
+        )
+    except WebSocketDisconnect:
+        pass
+    except Exception as exc:
+        logger.warning("handler: unhandled exception user=%s: %s", user_id, exc)
+    finally:
+        await pubsub.unsubscribe()
+        await pubsub.aclose()
+        await unregister_device(user_id)
+        logger.info("handler: disconnected user=%s device=%s", user_id, device_id)
+
+
+# ── Inbound: Electron → Redis ────────────────────────────────────────
+
+async def _inbound_loop(websocket: WebSocket, user_id: str) -> None:
+    """Receive frames from Electron and route to the appropriate Redis channel."""
+    async for raw in websocket.iter_text():
+        try:
+            frame: dict = json.loads(raw)
+        except json.JSONDecodeError:
+            logger.warning("handler: invalid JSON from user=%s", user_id)
+            continue
+
+        frame_type = frame.get("type")
+
+        # Inject user_id so downstream services know who sent it
+        frame["user_id"] = user_id
+
+        if frame_type == WsFrameType.tool_result:
+            call_id = frame.get("id")
+            if call_id:
+                await push_tool_result(call_id, frame)
+            else:
+                logger.warning("handler: tool_result missing id user=%s", user_id)
+
+        elif frame_type in (WsFrameType.home_request, WsFrameType.floating_request):
+            await publish_chat_request(user_id, frame)
+
+        elif frame_type in (WsFrameType.journey_start, WsFrameType.journey_message):
+            await publish_batch_request(user_id, frame)
+
+        elif frame_type == "pong":
+            pass  # heartbeat ack
+
+        else:
+            logger.debug("handler: unknown frame type %r user=%s", frame_type, user_id)
+
+
+# ── Outbound: Redis → Electron ───────────────────────────────────────
+
+async def _outbound_loop(websocket: WebSocket, pubsub) -> None:
+    """Subscribe to Redis ws:out:{user_id} and forward frames to Electron."""
+    while True:
+        message = await pubsub.get_message(ignore_subscribe_messages=True, timeout=1.0)
+        if message is not None and message["type"] == "message":
+            await websocket.send_text(message["data"])
+        else:
+            # Brief sleep to avoid busy-wait when no messages
+            await asyncio.sleep(0.01)
+
+
+# ── Heartbeat ────────────────────────────────────────────────────────
+
+async def _heartbeat_loop(websocket: WebSocket) -> None:
+    """Send ping frames every 30s to keep the connection alive."""
+    while True:
+        await asyncio.sleep(_HEARTBEAT_INTERVAL)
+        await websocket.send_text(json.dumps({"type": "ping"}))

services/ws-gateway/app/main.py

@@ -0,0 +1,49 @@
+"""WS Gateway — stateless WebSocket proxy.
+
+Accepts Electron device connections, authenticates JWT (RS256 public key),
+and routes frames between Electron and downstream services via Redis pub/sub.
+
+This service has NO business logic — it only routes JSON frames.
+"""
+
+from contextlib import asynccontextmanager
+import logging
+
+from fastapi import FastAPI
+from shared.config import settings
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+)
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    yield
+    from shared.redis import redis_client
+
+    await redis_client.aclose()
+
+
+def create_app() -> FastAPI:
+    app = FastAPI(
+        title="Adiuva WS Gateway",
+        version="0.1.0",
+        docs_url="/docs" if settings.ENV == "dev" else None,
+        redoc_url=None,
+        lifespan=lifespan,
+    )
+
+    from app.handler import router
+
+    app.include_router(router, prefix="/api/v1")
+
+    @app.get("/api/v1/health", tags=["health"])
+    async def health() -> dict:
+        return {"status": "ok", "service": "ws-gateway", "version": app.version}
+
+    return app
+
+
+app = create_app()

services/ws-gateway/app/redis_bridge.py

@@ -0,0 +1,104 @@
+"""Redis bridge — device registry + pub/sub routing.
+
+All inter-service communication passes through Redis:
+  - Device registry:   HSET/HDEL ws:devices:{user_id}
+  - Outbound frames:   Subscribe ws:out:{user_id}
+  - Chat requests:     Publish chat:request:{user_id}
+  - Batch requests:    Publish batch:request:{user_id}
+  - Tool results:      LPUSH tool:result:{call_id}
+"""
+
+from __future__ import annotations
+
+import json
+import logging
+
+from shared.redis import (
+    batch_request_channel,
+    chat_request_channel,
+    device_key,
+    redis_client,
+    tool_result_key,
+    ws_out_channel,
+)
+
+logger = logging.getLogger(__name__)
+
+# Instance ID for this gateway replica (set on startup)
+_GATEWAY_ID: str = ""
+
+
+def set_gateway_id(gid: str) -> None:
+    global _GATEWAY_ID
+    _GATEWAY_ID = gid
+
+
+def get_gateway_id() -> str:
+    return _GATEWAY_ID
+
+
+# ── Device Registry ──────────────────────────────────────────────────
+
+
+async def register_device(user_id: str, device_id: str) -> None:
+    """Register a connected device in Redis."""
+    key = device_key(user_id)
+    await redis_client.hset(key, mapping={
+        "device_id": device_id,
+        "gateway_id": _GATEWAY_ID,
+    })
+    logger.info("redis_bridge: registered user=%s device=%s gateway=%s", user_id, device_id, _GATEWAY_ID)
+
+
+async def unregister_device(user_id: str) -> None:
+    """Remove device registration from Redis."""
+    key = device_key(user_id)
+    await redis_client.delete(key)
+    logger.info("redis_bridge: unregistered user=%s", user_id)
+
+
+async def is_device_online(user_id: str) -> bool:
+    """Check if a device is registered."""
+    key = device_key(user_id)
+    return await redis_client.exists(key) > 0
+
+
+# ── Frame Routing ────────────────────────────────────────────────────
+
+
+async def publish_chat_request(user_id: str, frame: dict) -> None:
+    """Forward a chat request frame to the Chat Service via Redis."""
+    channel = chat_request_channel(user_id)
+    await redis_client.publish(channel, json.dumps(frame))
+    logger.debug("redis_bridge: published chat_request user=%s", user_id)
+
+
+async def publish_batch_request(user_id: str, frame: dict) -> None:
+    """Forward a batch request frame to the Batch Agent Service via Redis."""
+    channel = batch_request_channel(user_id)
+    await redis_client.publish(channel, json.dumps(frame))
+    logger.debug("redis_bridge: published batch_request user=%s", user_id)
+
+
+async def push_tool_result(call_id: str, result: dict) -> None:
+    """Push a tool_result to the Redis list for the waiting service.
+
+    Chat/Batch services do BRPOP on this key with a 30s timeout.
+    """
+    key = tool_result_key(call_id)
+    await redis_client.lpush(key, json.dumps(result))
+    # Auto-expire after 60s to prevent stale keys
+    await redis_client.expire(key, 60)
+    logger.debug("redis_bridge: pushed tool_result call_id=%s", call_id)
+
+
+async def subscribe_outbound(user_id: str):
+    """Return an async pubsub subscription for frames to send to Electron.
+
+    Chat/Batch services publish to ws:out:{user_id} and this gateway
+    forwards them to the connected WebSocket.
+    """
+    channel = ws_out_channel(user_id)
+    pubsub = redis_client.pubsub()
+    await pubsub.subscribe(channel)
+    return pubsub

services/ws-gateway/requirements.txt

@@ -0,0 +1,8 @@
+fastapi>=0.115.0
+uvicorn[standard]>=0.34.0
+gunicorn>=22.0.0
+pydantic>=2.10.0
+pydantic-settings>=2.7.0
+python-jose[cryptography]>=3.3.0
+redis>=5.0.0
+websockets>=14.0

traefik/traefik.yml

@@ -33,7 +33,7 @@ certificatesResolvers:
       storage: /etc/traefik/acme/acme.json
       dnsChallenge:
         provider: cloudflare
-        delayBeforeCheck: 10
+        delayBeforeCheck: "10"
         resolvers:
           - "1.1.1.1:53"
           - "8.8.8.8:53"