refactor: rename package fabledassistant -> scribe (code-only)

Renames src/fabledassistant -> src/scribe and all imports, plus the
default DB name and DB user/password (fabled -> scribe) in config +
compose. 952 refs / 154 files. Reverses the old 'internal name stays
fabledassistant' convention.

Code-only: live databases are still physically named 'fabledassistant'.
Deployed environments must set POSTGRES_DB / POSTGRES_USER (or rename the
DB) since the defaults now resolve to 'scribe'. Repo (FabledScribe), git
host (fabledsword), MCP (fabled-git) and the image name (fabledscribe)
are intentionally unchanged.

ruff check src/ clean locally; CI (typecheck + pytest) is the gate.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/test_services_dashboard.py

@@ -10,7 +10,7 @@ import pytest
 
 
 def test_task_row_maps_fields():
-    from fabledassistant.services.dashboard import _task_row
+    from scribe.services.dashboard import _task_row
     n = MagicMock()
     n.id = 5
     n.title = "Wire reminders"
@@ -23,7 +23,7 @@ def test_task_row_maps_fields():
 
 @pytest.mark.asyncio
 async def test_safe_returns_value_then_empty_on_error():
-    from fabledassistant.services.dashboard import _safe
+    from scribe.services.dashboard import _safe
 
     async def ok():
         return [1, 2, 3]
@@ -39,7 +39,7 @@ async def test_safe_returns_value_then_empty_on_error():
 
 @pytest.mark.asyncio
 async def test_build_dashboard_composes_sections():
-    import fabledassistant.services.dashboard as dash
+    import scribe.services.dashboard as dash
     with patch.object(dash, "_active_projects", AsyncMock(return_value=["P"])), \
          patch.object(dash, "_recently_completed", AsyncMock(return_value=["done"])), \
          patch.object(dash, "_upcoming_events", AsyncMock(return_value=["evt"])), \
@@ -55,7 +55,7 @@ async def test_build_dashboard_composes_sections():
 
 @pytest.mark.asyncio
 async def test_build_dashboard_isolates_failing_section():
-    import fabledassistant.services.dashboard as dash
+    import scribe.services.dashboard as dash
     with patch.object(dash, "_active_projects", AsyncMock(side_effect=RuntimeError("db down"))), \
          patch.object(dash, "_recently_completed", AsyncMock(return_value=["done"])), \
          patch.object(dash, "_upcoming_events", AsyncMock(return_value=[])), \