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_scan.py

@@ -19,7 +19,7 @@ def _v(version_id: int, days_ago: int, pin_kind=None):
 
 def test_promote_stable_versions_pins_versions_with_2_day_gap():
     """Versions followed by another version >= 2 days later get promoted."""
-    from fabledassistant.services.version_pinning import (
+    from scribe.services.version_pinning import (
         _promote_stable_versions_for_note,
     )
     # 3 versions: v1 (10 days ago), v2 (5 days ago), v3 (1 day ago)
@@ -35,7 +35,7 @@ def test_promote_stable_versions_pins_versions_with_2_day_gap():
 
 def test_promote_stable_versions_pins_latest_if_old_enough():
     """If the latest version is >= 2 days old with no successor, pin it."""
-    from fabledassistant.services.version_pinning import (
+    from scribe.services.version_pinning import (
         _promote_stable_versions_for_note,
     )
     versions = [_v(1, 10), _v(2, 3)]   # latest is 3 days old
@@ -44,7 +44,7 @@ def test_promote_stable_versions_pins_latest_if_old_enough():
 
 
 def test_promote_stable_versions_skips_already_pinned():
-    from fabledassistant.services.version_pinning import (
+    from scribe.services.version_pinning import (
         _promote_stable_versions_for_note,
     )
     versions = [_v(1, 10, pin_kind="manual"), _v(2, 5)]
@@ -67,7 +67,7 @@ def test_promote_stable_versions_skips_active_editing():
         id=2, created_at=base - timedelta(hours=2),
         pin_kind=None, pin_label=None,
     )
-    from fabledassistant.services.version_pinning import (
+    from scribe.services.version_pinning import (
         _promote_stable_versions_for_note,
     )
     pinned = _promote_stable_versions_for_note([v1, v2])
@@ -76,7 +76,7 @@ def test_promote_stable_versions_skips_active_editing():
 
 def test_promote_stable_versions_writes_descriptive_label():
     """The auto-generated label references stability."""
-    from fabledassistant.services.version_pinning import (
+    from scribe.services.version_pinning import (
         _promote_stable_versions_for_note,
     )
     versions = [_v(1, 10), _v(2, 5), _v(3, 1)]
@@ -94,7 +94,7 @@ def test_promote_stable_versions_naive_datetime_is_treated_as_utc():
         SimpleNamespace(id=1, created_at=naive_old, pin_kind=None, pin_label=None),
         SimpleNamespace(id=2, created_at=naive_recent, pin_kind=None, pin_label=None),
     ]
-    from fabledassistant.services.version_pinning import (
+    from scribe.services.version_pinning import (
         _promote_stable_versions_for_note,
     )
     pinned = _promote_stable_versions_for_note(versions)
@@ -105,7 +105,7 @@ def test_promote_stable_versions_naive_datetime_is_treated_as_utc():
 async def test_scan_user_for_auto_pins_iterates_all_notes(monkeypatch):
     """scan_user_for_auto_pins iterates every note for the user and calls
     the per-note flow on each, summing returned counts."""
-    from fabledassistant.services import version_pinning
+    from scribe.services import version_pinning
 
     note_ids = [10, 20, 30]
     seen: list[int] = []
@@ -136,7 +136,7 @@ async def test_scan_user_for_auto_pins_iterates_all_notes(monkeypatch):
 async def test_scan_user_for_auto_pins_swallows_per_note_errors(monkeypatch):
     """One bad note doesn't stop the scan; the error is logged and the
     others continue."""
-    from fabledassistant.services import version_pinning
+    from scribe.services import version_pinning
 
     async def fake_list_note_ids(uid):
         return [10, 20, 30]