feat: rename to FabledScryer, multi-dashboard system, plugin management, branding

- Rename package fablednetmon → fabledscryer throughout
- Multi-dashboard: ownership, per-user defaults, HTMX edit (add/remove/reorder)
- Read-only share tokens scoped to individual dashboards
- Dashboard edit is HTMX-driven (no page reloads)
- Plugin management system: remote catalog, download/install, hot-reload, in-app restart
- plugin_index.py: fetch/cache remote index.yaml; default URL → bvandeusen/fabledscryer-plugins
- plugin_manager.py: download_and_install_plugin, hot_reload_plugin, restart_app
  - ZIP extraction handles GitHub archive formats (name-v1.0.0/, name-main/)
- Settings split into tabbed sections: General, Notifications, Ansible, Plugins
- Plugins tab: catalog browser (HTMX), install/activate/update/restart actions
- UI/branding: dark palette (#07071a), crystal ball SVG logo, animated star field,
  Libertinus Serif applied to headings, nav, labels, and section titles
- Widget registry (core/widgets.py) for dashboard plugin integration
- UPS widget.html (dashboard card) and settings/_tabs.html include
- Migrations 0005–0008: dashboards, is_default, ownership, share tokens
- docs/plugins/: writing-a-plugin.md updated with publishing guide,
  index.yaml.example template for fabledscryer-plugins repo

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

tests/test_config.py

@@ -1,25 +1,25 @@
 import os
 import textwrap
 import pytest
-from fablednetmon.config import load_bootstrap
+from fabledscryer.config import load_bootstrap
 
 
 def test_load_bootstrap_from_yaml(tmp_path):
     cfg_file = tmp_path / "config.yaml"
     cfg_file.write_text(textwrap.dedent("""\
         database:
-          url: postgresql+asyncpg://user:pass@localhost/fablednetmon
+          url: postgresql+asyncpg://user:pass@localhost/fabledscryer
         secret_key: test-secret
     """))
     cfg = load_bootstrap(cfg_file)
-    assert cfg["database_url"] == "postgresql+asyncpg://user:pass@localhost/fablednetmon"
+    assert cfg["database_url"] == "postgresql+asyncpg://user:pass@localhost/fabledscryer"
     assert cfg["secret_key"] == "test-secret"
 
 
 def test_env_var_database_url_overrides_yaml(tmp_path, monkeypatch):
     cfg_file = tmp_path / "config.yaml"
     cfg_file.write_text("database:\n  url: original\nsecret_key: s\n")
-    monkeypatch.setenv("FABLEDNETMON_DATABASE_URL", "overridden")
+    monkeypatch.setenv("FABLEDSCRYER_DATABASE_URL", "overridden")
     cfg = load_bootstrap(cfg_file)
     assert cfg["database_url"] == "overridden"
 
@@ -27,7 +27,7 @@ def test_env_var_database_url_overrides_yaml(tmp_path, monkeypatch):
 def test_env_var_secret_key_overrides_yaml(tmp_path, monkeypatch):
     cfg_file = tmp_path / "config.yaml"
     cfg_file.write_text("database:\n  url: x\nsecret_key: from-yaml\n")
-    monkeypatch.setenv("FABLEDNETMON_SECRET_KEY", "from-env")
+    monkeypatch.setenv("FABLEDSCRYER_SECRET_KEY", "from-env")
     cfg = load_bootstrap(cfg_file)
     assert cfg["secret_key"] == "from-env"