feat(recipes): reconnect suggestions, undo, and base-model family tolerance

Enhance the deleted-LoRA reconnect flow in the recipe modal:

- Suggest local reconnect candidates when the panel opens, ranked by
  identity (same hash / same CivitAI version) then filename/name
  similarity, with a hard filter on confident base-model mismatches;
  the input gets a Combobox backed by the same endpoint as you type.
- Snapshot the pre-reconnect entry and offer a permanent restore:
  reconnected entries show an undo icon at the right end of the info
  row, with the original filename in the tooltip.
- Relax the manual reconnect base-model guard to a three-tier check:
  exact/unknown labels pass silently, same-architecture families
  (e.g. Pony <-> Illustrious) pass with a warning toast, and only
  cross-architecture mismatches stay hard-rejected.

tests/utils/test_base_model.py

@@ -0,0 +1,53 @@
+"""Unit tests for base-model architecture-family relations."""
+
+from py.utils.base_model import (
+    RELATION_COMPATIBLE,
+    RELATION_INCOMPATIBLE,
+    RELATION_SAME,
+    RELATION_UNKNOWN,
+    base_model_relation,
+)
+
+
+def test_identical_labels_are_same():
+    assert base_model_relation("SDXL 1.0", "sdxl 1.0") == RELATION_SAME
+    assert base_model_relation(" Pony ", "pony") == RELATION_SAME
+
+
+def test_sdxl_lineage_is_compatible():
+    assert base_model_relation("Pony", "Illustrious") == RELATION_COMPATIBLE
+    assert base_model_relation("Illustrious", "SDXL 1.0") == RELATION_COMPATIBLE
+    assert base_model_relation("NoobAI", "SDXL Lightning") == RELATION_COMPATIBLE
+
+
+def test_sd1_lineage_is_compatible():
+    assert base_model_relation("SD 1.5", "SD 1.4") == RELATION_COMPATIBLE
+    assert base_model_relation("SD 1.5 LCM", "SD 1.5") == RELATION_COMPATIBLE
+
+
+def test_flux1_lineage_is_compatible():
+    assert base_model_relation("Flux.1 D", "Flux.1 S") == RELATION_COMPATIBLE
+
+
+def test_cross_architecture_is_incompatible():
+    assert base_model_relation("SD 1.5", "SDXL 1.0") == RELATION_INCOMPATIBLE
+    assert base_model_relation("Pony", "Flux.1 D") == RELATION_INCOMPATIBLE
+
+
+def test_pony_v7_is_not_sdxl_compatible():
+    # Pony V7 is AuraFlow-based; sharing a name prefix with Pony means nothing.
+    assert base_model_relation("Pony", "Pony V7") == RELATION_INCOMPATIBLE
+
+
+def test_unknown_labels_stay_unknown():
+    assert base_model_relation("", "SDXL 1.0") == RELATION_UNKNOWN
+    assert base_model_relation("SDXL 1.0", "unknown") == RELATION_UNKNOWN
+    assert base_model_relation(None, None) == RELATION_UNKNOWN
+
+
+def test_unlisted_labels_fall_back_to_strict():
+    # A label missing from the family table only matches itself exactly —
+    # unknown new CivitAI labels must never be wrongly waved through.
+    assert base_model_relation("Wan Video", "Wan Video") == RELATION_SAME
+    assert base_model_relation("Wan Video", "Hunyuan Video") == RELATION_INCOMPATIBLE
+    assert base_model_relation("Wan Video", "Pony") == RELATION_INCOMPATIBLE