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_version_pinning_pin_unpin.py

@@ -20,10 +20,10 @@ async def test_pin_version_sets_manual_kind_and_label():
     mock_version.pin_label = None
 
     with patch(
-        "fabledassistant.services.version_pinning.async_session",
+        "scribe.services.version_pinning.async_session",
         return_value=_mock_session_for_version(mock_version),
     ):
-        from fabledassistant.services.version_pinning import pin_version
+        from scribe.services.version_pinning import pin_version
         result = await pin_version(
             user_id=1, note_id=42, version_id=7, label="the runbook circa Q2",
         )
@@ -40,10 +40,10 @@ async def test_pin_version_accepts_null_label():
     mock_version.pin_label = None
 
     with patch(
-        "fabledassistant.services.version_pinning.async_session",
+        "scribe.services.version_pinning.async_session",
         return_value=_mock_session_for_version(mock_version),
     ):
-        from fabledassistant.services.version_pinning import pin_version
+        from scribe.services.version_pinning import pin_version
         await pin_version(user_id=1, note_id=42, version_id=7, label=None)
 
     assert mock_version.pin_kind == "manual"
@@ -57,10 +57,10 @@ async def test_pin_version_promotes_auto_to_manual_with_label_update():
     mock_version.pin_label = "stable 2026-04-01 → 2026-04-05"
 
     with patch(
-        "fabledassistant.services.version_pinning.async_session",
+        "scribe.services.version_pinning.async_session",
         return_value=_mock_session_for_version(mock_version),
     ):
-        from fabledassistant.services.version_pinning import pin_version
+        from scribe.services.version_pinning import pin_version
         await pin_version(
             user_id=1, note_id=42, version_id=7, label="post-network-refresh",
         )
@@ -78,10 +78,10 @@ async def test_pin_version_rejects_overlong_label():
     # even be entered. We still patch it to avoid accidental DB lookups
     # if the implementation order changes.
     with patch(
-        "fabledassistant.services.version_pinning.async_session",
+        "scribe.services.version_pinning.async_session",
         return_value=_mock_session_for_version(mock_version),
     ):
-        from fabledassistant.services.version_pinning import pin_version
+        from scribe.services.version_pinning import pin_version
         try:
             await pin_version(
                 user_id=1, note_id=42, version_id=7, label="x" * 501,
@@ -102,10 +102,10 @@ async def test_pin_version_returns_none_when_not_found():
     mock_session.__aexit__ = AsyncMock(return_value=False)
 
     with patch(
-        "fabledassistant.services.version_pinning.async_session",
+        "scribe.services.version_pinning.async_session",
         return_value=mock_session,
     ):
-        from fabledassistant.services.version_pinning import pin_version
+        from scribe.services.version_pinning import pin_version
         out = await pin_version(user_id=1, note_id=42, version_id=99, label=None)
 
     assert out is None
@@ -117,10 +117,10 @@ async def test_unpin_version_clears_kind_and_label():
     mock_version.pin_label = "previous label"
 
     with patch(
-        "fabledassistant.services.version_pinning.async_session",
+        "scribe.services.version_pinning.async_session",
         return_value=_mock_session_for_version(mock_version),
     ):
-        from fabledassistant.services.version_pinning import unpin_version
+        from scribe.services.version_pinning import unpin_version
         result = await unpin_version(user_id=1, note_id=42, version_id=7)
 
     assert result is mock_version