chore: rename project Roundtable → Steward

Renames the Python package directory, CLI command, env var prefix,
docker-compose service/container/image, Postgres role/db, and all
visible branding. Marketing form is "Fabled Steward".

Clean break from the previous rebrand: drops the fabledscryer→roundtable
import shim in __init__.py and the FABLEDSCRYER_* env var fallback in
config.py and migrations/env.py. Env vars are now STEWARD_* only.

Heads-up for existing deployments:
- Postgres user/db renamed fabledscryer → steward in docker-compose.yml.
  Existing volumes need the role/db renamed inside Postgres, or override
  POSTGRES_USER/POSTGRES_DB to keep the old names.
- Host-agent systemd unit is now steward-agent.service. Existing agents
  keep running under the old name; reinstall to switch.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docs/plugins/host-agent-plan.md

@@ -2,7 +2,7 @@
 
 > **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
 
-**Goal:** Ship a `host_agent` Roundtable plugin plus a stdlib-only Python push agent that reports CPU/memory/storage/load/uptime from remote Linux hosts to Roundtable.
+**Goal:** Ship a `host_agent` Steward plugin plus a stdlib-only Python push agent that reports CPU/memory/storage/load/uptime from remote Linux hosts to Steward.
 
 **Architecture:** Plugin lives under `plugins/host_agent/` (mirrors `plugins/http/`). It owns a private `host_agent_registrations` table, writes time-series data into the core `PluginMetric` bus, serves its own agent source at `GET /plugins/host_agent/agent.py`, and renders a per-host install script at `GET /plugins/host_agent/install.sh`. The agent is a single ~300-line Python script with a 30s collect→POST loop, in-memory ring buffer, exponential backoff, and systemd unit installed by a curl one-liner.
 
@@ -14,7 +14,7 @@
 
 ## Execution note — path 1 (no DB-backed tests)
 
-Mid-execution discovery: the Roundtable test harness runs `create_app(testing=True)`, which mocks `db_sessionmaker` and skips all migrations. There is no existing DB-backed test fixture in this codebase, and no existing plugin ships with tests. The first execution attempt tried to invent a SQLite-backed override fixture, which cascaded into modifying a production migration (`0007_dashboard_ownership.py`) to remove an inline FK — unacceptable. That commit was reverted.
+Mid-execution discovery: the Steward test harness runs `create_app(testing=True)`, which mocks `db_sessionmaker` and skips all migrations. There is no existing DB-backed test fixture in this codebase, and no existing plugin ships with tests. The first execution attempt tried to invent a SQLite-backed override fixture, which cascaded into modifying a production migration (`0007_dashboard_ownership.py`) to remove an inline FK — unacceptable. That commit was reverted.
 
 **Revised test strategy:** test the agent exhaustively (everything that lives in `plugins/host_agent/agent.py` — pure Python, stdlib only, trivially unit-testable). Test the server-side metric-expansion function as a pure function that takes a sample dict + host name and returns a list of `(metric_name, resource_name, value)` tuples. Everything else — ingest route, install route, settings routes, widgets, detail page, scheduler — is verified manually against the dev server.
 
@@ -43,7 +43,7 @@ Where code blocks in tasks below reference DB-backed tests, treat them as guidan
 - `plugins/host_agent/scheduler.py` — stale-agent marker task.
 - `plugins/host_agent/agent.py` — the Python agent script, served to targets.
 - `plugins/host_agent/migrations/__init__.py`
-- `plugins/host_agent/migrations/env.py` — alembic env (copy of http plugin's, but imports `roundtable.models.base`).
+- `plugins/host_agent/migrations/env.py` — alembic env (copy of http plugin's, but imports `steward.models.base`).
 - `plugins/host_agent/migrations/versions/__init__.py`
 - `plugins/host_agent/migrations/versions/host_agent_001_initial.py` — creates `host_agent_registrations`.
 - `plugins/host_agent/templates/install.sh.j2` — Jinja install script template.
@@ -68,8 +68,8 @@ Where code blocks in tasks below reference DB-backed tests, treat them as guidan
 
 **Modified files (core, small edits):**
 
-- `roundtable/alerts/routes.py` — add `"host_agent"` entry to `METRIC_CATALOG`.
-- `roundtable/core/widgets.py` — add `host_resources` and `host_resource_history` entries.
+- `steward/alerts/routes.py` — add `"host_agent"` entry to `METRIC_CATALOG`.
+- `steward/core/widgets.py` — add `host_resources` and `host_resource_history` entries.
 - `docs/plugins/index.yaml.example` — add catalog entry.
 
 ---
@@ -102,7 +102,7 @@ pytestmark = pytest.mark.asyncio
 
 async def test_host_agent_migration_creates_table(app):
     # The app fixture runs all plugin migrations on startup.
-    from roundtable.core.db import get_engine
+    from steward.core.db import get_engine
     engine = get_engine()
     async with engine.connect() as conn:
         def _check(sync_conn):
@@ -127,11 +127,11 @@ Expected: FAIL (plugin not loaded, table missing).
 name: host_agent
 version: "1.0.0"
 description: "Remote Linux host resource monitoring via a lightweight Python push agent (CPU, memory, storage, load, uptime)"
-author: "Roundtable"
+author: "Steward"
 license: "MIT"
 min_app_version: "0.1.0"
-repository_url: "https://git.fabledsword.com/bvandeusen/Roundtable-plugins"
-homepage: "https://git.fabledsword.com/bvandeusen/Roundtable-plugins/src/branch/main/host_agent"
+repository_url: "https://git.fabledsword.com/bvandeusen/Steward-plugins"
+homepage: "https://git.fabledsword.com/bvandeusen/Steward-plugins/src/branch/main/host_agent"
 tags:
   - host
   - monitoring
@@ -180,7 +180,7 @@ from __future__ import annotations
 import uuid
 from datetime import datetime, timezone
 from sqlalchemy import Column, String, DateTime, ForeignKey
-from roundtable.models.base import Base
+from steward.models.base import Base
 
 
 def _uuid() -> str:
@@ -269,8 +269,8 @@ from alembic import context
 
 sys.path.insert(0, str(Path(__file__).parent.parent.parent.parent))
 
-from roundtable.models.base import Base
-import roundtable.models  # noqa: F401
+from steward.models.base import Base
+import steward.models  # noqa: F401
 from plugins.host_agent.models import HostAgentRegistration  # noqa: F401
 
 config = context.config
@@ -282,14 +282,14 @@ target_metadata = Base.metadata
 
 def _get_url() -> str:
     import yaml
-    cfg_path = os.environ.get("ROUNDTABLE_CONFIG", "config.yaml")
+    cfg_path = os.environ.get("STEWARD_CONFIG", "config.yaml")
     try:
         with open(cfg_path) as f:
             cfg = yaml.safe_load(f) or {}
         url = cfg.get("database", {}).get("url", "")
     except FileNotFoundError:
         url = ""
-    return os.environ.get("ROUNDTABLE_DATABASE__URL", url)
+    return os.environ.get("STEWARD_DATABASE__URL", url)
 
 
 def run_migrations_offline() -> None:
@@ -413,12 +413,12 @@ from plugins.host_agent.agent import read_config, ConfigError
 def test_parses_flat_key_value(tmp_path):
     p = tmp_path / "agent.conf"
     p.write_text(
-        "url = https://roundtable.example\n"
+        "url = https://steward.example\n"
         "token = abc123\n"
         "interval_seconds = 45\n"
     )
     cfg = read_config(str(p))
-    assert cfg["url"] == "https://roundtable.example"
+    assert cfg["url"] == "https://steward.example"
     assert cfg["token"] == "abc123"
     assert cfg["interval_seconds"] == 45
 
@@ -466,7 +466,7 @@ Expected: FAIL (`read_config` does not exist).
 
 ```python
 # plugins/host_agent/agent.py
-"""Roundtable host agent — pushes resource metrics to a Roundtable instance.
+"""Steward host agent — pushes resource metrics to a Steward instance.
 
 Python 3.8+ stdlib only. Target ~300 lines. Served to targets at
 GET /plugins/host_agent/agent.py.
@@ -1060,7 +1060,7 @@ def post_payload(url: str, token: str, payload: dict) -> tuple[bool, int | None]
         headers={
             "Content-Type": "application/json",
             "Authorization": f"Bearer {token}",
-            "User-Agent": f"roundtable-host-agent/{AGENT_VERSION}",
+            "User-Agent": f"steward-host-agent/{AGENT_VERSION}",
         },
         method="POST",
     )
@@ -1112,7 +1112,7 @@ def main_loop(conf_path: str) -> int:
     buffer = RingBuffer(maxlen=20)
     backoff = 0
 
-    _log("INFO", f"roundtable-host-agent {AGENT_VERSION} starting "
+    _log("INFO", f"steward-host-agent {AGENT_VERSION} starting "
                  f"(url={cfg['url']}, interval={cfg['interval_seconds']}s)")
 
     while not _shutdown_requested:
@@ -1171,7 +1171,7 @@ def main_loop(conf_path: str) -> int:
 
 
 if __name__ == "__main__":
-    conf = os.environ.get("ROUNDTABLE_AGENT_CONFIG", "/etc/roundtable-agent.conf")
+    conf = os.environ.get("STEWARD_AGENT_CONFIG", "/etc/steward-agent.conf")
     sys.exit(main_loop(conf))
 ```
 
@@ -1209,8 +1209,8 @@ git commit -m "feat(host_agent): agent POST, backoff, and main loop"
 import hashlib
 import pytest_asyncio
 
-from roundtable.models.hosts import Host
-from roundtable.core.db import get_session
+from steward.models.hosts import Host
+from steward.core.db import get_session
 from plugins.host_agent.models import HostAgentRegistration
 
 
@@ -1233,7 +1233,7 @@ async def registered_host(app):
         return {"host": host, "registration": reg, "token": raw_token}
 ```
 
-> **Note:** Verify `Host.__init__` accepts `name=` and `address=` kwargs before relying on this. If the real Host model requires more fields (e.g., `probe_type`), pass them here. Read `roundtable/models/hosts.py` first to confirm.
+> **Note:** Verify `Host.__init__` accepts `name=` and `address=` kwargs before relying on this. If the real Host model requires more fields (e.g., `probe_type`), pass them here. Read `steward/models/hosts.py` first to confirm.
 
 - [ ] **Step 2: Write failing ingest test**
 
@@ -1244,8 +1244,8 @@ from datetime import datetime, timezone
 import pytest
 from sqlalchemy import select
 
-from roundtable.models.metrics import PluginMetric
-from roundtable.core.db import get_session
+from steward.models.metrics import PluginMetric
+from steward.core.db import get_session
 from plugins.host_agent.models import HostAgentRegistration
 
 pytestmark = pytest.mark.asyncio
@@ -1352,9 +1352,9 @@ from typing import Any
 from quart import Blueprint, jsonify, request
 from sqlalchemy import select
 
-from roundtable.core.db import get_session
-from roundtable.models.hosts import Host
-from roundtable.models.metrics import PluginMetric
+from steward.core.db import get_session
+from steward.models.hosts import Host
+from steward.models.metrics import PluginMetric
 from .models import HostAgentRegistration
 
 host_agent_bp = Blueprint("host_agent", __name__, template_folder="templates")
@@ -1628,7 +1628,7 @@ async def test_install_sh_renders_with_token(client, registered_host):
     assert resp.status_code == 200
     assert resp.content_type.startswith("text/plain")
     text = (await resp.get_data()).decode()
-    assert "roundtable-agent" in text
+    assert "steward-agent" in text
     assert registered_host["token"] in text
     assert "systemctl enable --now" in text
     assert "NoNewPrivileges=yes" in text
@@ -1758,11 +1758,11 @@ git commit -m "feat(host_agent): install.sh and agent.py serving routes"
 - Create: `plugins/host_agent/templates/settings_list.html`
 - Create: `tests/plugins/host_agent/test_settings_routes.py`
 
-Auth note: the existing Roundtable admin decorator pattern needs to be used here. Read `roundtable/settings/routes.py` (or similar) to find the decorator name — likely something like `@require_admin` or a session check. Use whatever the rest of the codebase uses. **Do not invent a new auth mechanism.**
+Auth note: the existing Steward admin decorator pattern needs to be used here. Read `steward/settings/routes.py` (or similar) to find the decorator name — likely something like `@require_admin` or a session check. Use whatever the rest of the codebase uses. **Do not invent a new auth mechanism.**
 
 - [ ] **Step 1: Find the admin auth decorator**
 
-Run: `grep -rn "require_admin\|@admin_required\|def admin" roundtable/settings/ roundtable/core/auth.py 2>/dev/null | head -20`
+Run: `grep -rn "require_admin\|@admin_required\|def admin" steward/settings/ steward/core/auth.py 2>/dev/null | head -20`
 Note the decorator name and import path for use in Step 3.
 
 - [ ] **Step 2: Write failing test**
@@ -1772,8 +1772,8 @@ Note the decorator name and import path for use in Step 3.
 import pytest
 from sqlalchemy import select
 
-from roundtable.core.db import get_session
-from roundtable.models.hosts import Host
+from steward.core.db import get_session
+from steward.models.hosts import Host
 from plugins.host_agent.models import HostAgentRegistration
 
 pytestmark = pytest.mark.asyncio
@@ -1839,7 +1839,7 @@ from quart import redirect, url_for
 
 # TODO: replace _require_admin with the project-wide decorator found in Step 1.
 # Placeholder below mirrors the shape; swap for real admin auth.
-from roundtable.core.auth import require_admin  # adjust import to actual path
+from steward.core.auth import require_admin  # adjust import to actual path
 
 
 def _new_token_pair() -> tuple[str, str]:
@@ -1938,7 +1938,7 @@ async def settings_list():
 
 ```html
 {% extends "base.html" %}
-{% block title %}Host Agent — Roundtable{% endblock %}
+{% block title %}Host Agent — Steward{% endblock %}
 {% block content %}
 <h1 class="page-title">Host Agent — Registered Hosts</h1>
 
@@ -2003,7 +2003,7 @@ async def settings_list():
 - [ ] **Step 6: Run tests — iterate on auth decorator if needed**
 
 Run: `pytest tests/plugins/host_agent/test_settings_routes.py -v`
-Expected: PASS. If admin auth fails, the actual import path from Step 1 is wrong — fix the `from roundtable.core.auth import require_admin` line.
+Expected: PASS. If admin auth fails, the actual import path from Step 1 is wrong — fix the `from steward.core.auth import require_admin` line.
 
 - [ ] **Step 7: Commit**
 
@@ -2020,8 +2020,8 @@ git commit -m "feat(host_agent): plugin settings page — add, rotate, delete"
 - Modify: `plugins/host_agent/routes.py` — add `/widget` and `/widget/history` partials.
 - Create: `plugins/host_agent/templates/widget_table.html`
 - Create: `plugins/host_agent/templates/widget_history.html`
-- Modify: `roundtable/core/widgets.py`
-- Modify: `roundtable/alerts/routes.py`
+- Modify: `steward/core/widgets.py`
+- Modify: `steward/alerts/routes.py`
 
 - [ ] **Step 1: Add widget partial routes to `plugins/host_agent/routes.py`**
 
@@ -2165,7 +2165,7 @@ async def widget_history():
 </div>
 ```
 
-- [ ] **Step 4: Register widgets in `roundtable/core/widgets.py`**
+- [ ] **Step 4: Register widgets in `steward/core/widgets.py`**
 
 Add to `WIDGET_REGISTRY` (alphabetically by existing convention, or at the end — check the file first):
 
@@ -2206,7 +2206,7 @@ Add to `WIDGET_REGISTRY` (alphabetically by existing convention, or at the end
 
 - [ ] **Step 5: Register `host_agent` in `METRIC_CATALOG`**
 
-Read `roundtable/alerts/routes.py`. Locate the `METRIC_CATALOG` dict. Add:
+Read `steward/alerts/routes.py`. Locate the `METRIC_CATALOG` dict. Add:
 
 ```python
     "host_agent": [
@@ -2244,7 +2244,7 @@ Expected: PASS.
 - [ ] **Step 7: Commit**
 
 ```bash
-git add plugins/host_agent/routes.py plugins/host_agent/templates/widget_table.html plugins/host_agent/templates/widget_history.html roundtable/core/widgets.py roundtable/alerts/routes.py tests/plugins/host_agent/test_ingest_route.py
+git add plugins/host_agent/routes.py plugins/host_agent/templates/widget_table.html plugins/host_agent/templates/widget_history.html steward/core/widgets.py steward/alerts/routes.py tests/plugins/host_agent/test_ingest_route.py
 git commit -m "feat(host_agent): dashboard widgets and alert metric catalog entry"
 ```
 
@@ -2409,8 +2409,8 @@ from datetime import datetime, timedelta, timezone
 import pytest
 from sqlalchemy import select
 
-from roundtable.core.db import get_session
-from roundtable.models.hosts import Host
+from steward.core.db import get_session
+from steward.models.hosts import Host
 from plugins.host_agent.models import HostAgentRegistration
 from plugins.host_agent.scheduler import find_stale_registrations
 
@@ -2459,8 +2459,8 @@ from datetime import datetime, timedelta, timezone
 
 from sqlalchemy import select
 
-from roundtable.core.db import get_session
-from roundtable.models.hosts import Host
+from steward.core.db import get_session
+from steward.models.hosts import Host
 from .models import HostAgentRegistration
 
 
@@ -2531,8 +2531,8 @@ from unittest.mock import patch
 import pytest
 from sqlalchemy import select
 
-from roundtable.core.db import get_session
-from roundtable.models.metrics import PluginMetric
+from steward.core.db import get_session
+from steward.models.metrics import PluginMetric
 from plugins.host_agent import agent as a
 
 pytestmark = pytest.mark.asyncio
@@ -2609,12 +2609,12 @@ Append to the `plugins:` list in `docs/plugins/index.yaml.example`:
   - name: host_agent
     version: "1.0.0"
     description: "Remote Linux host resource monitoring via a lightweight Python push agent"
-    author: "Roundtable"
+    author: "Steward"
     license: "MIT"
     min_app_version: "0.1.0"
-    repository_url: "https://git.fabledsword.com/bvandeusen/Roundtable-plugins"
-    homepage: "https://git.fabledsword.com/bvandeusen/Roundtable-plugins/src/branch/main/host_agent"
-    download_url: "https://git.fabledsword.com/bvandeusen/Roundtable-plugins/releases/download/host_agent-v1.0.0/host_agent.zip"
+    repository_url: "https://git.fabledsword.com/bvandeusen/Steward-plugins"
+    homepage: "https://git.fabledsword.com/bvandeusen/Steward-plugins/src/branch/main/host_agent"
+    download_url: "https://git.fabledsword.com/bvandeusen/Steward-plugins/releases/download/host_agent-v1.0.0/host_agent.zip"
     checksum_sha256: ""
     tags:
       - host
@@ -2643,7 +2643,7 @@ Use `fable_update_task` to set status=done on task 252 ("Implement host_agent pl
 
 - [ ] **Step 2: Add a Fable note summarizing what shipped**
 
-One-paragraph `fable_create_note` attached to Roundtable project (id 6) with:
+One-paragraph `fable_create_note` attached to Steward project (id 6) with:
 - Link to spec: `docs/plugins/host-agent-design.md`
 - Link to plan: `docs/plugins/host-agent-plan.md`
 - Note any deviations from the spec discovered during implementation (e.g., auth decorator name, fixture adjustments).