Add genlocke lineage tracking with aligned timeline view

Implement read-only lineage view that traces Pokemon across genlocke legs
via existing transfer records. Backend walks transfer chains to build
lineage entries; frontend renders them as cards with a column-aligned
timeline grid so leg dots line up vertically across all lineages.

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

backend/src/app/schemas/genlocke.py

@@ -132,3 +132,35 @@ class GenlockeGraveyardResponse(CamelModel):
     total_deaths: int
     deaths_per_leg: list[GraveyardLegSummary]
     deadliest_leg: GraveyardLegSummary | None = None
+
+
+# --- Lineage schemas ---
+
+
+class LineageLegEntry(CamelModel):
+    leg_order: int
+    game_name: str
+    encounter_id: int
+    pokemon: PokemonResponse
+    current_pokemon: PokemonResponse | None = None
+    nickname: str | None = None
+    catch_level: int | None = None
+    faint_level: int | None = None
+    death_cause: str | None = None
+    is_shiny: bool = False
+    route_name: str
+    is_alive: bool
+    entered_hof: bool
+    was_transferred: bool
+
+
+class LineageEntry(CamelModel):
+    nickname: str | None
+    pokemon: PokemonResponse  # base form from first leg
+    legs: list[LineageLegEntry]
+    status: str  # "alive" | "dead"
+
+
+class GenlockeLineageResponse(CamelModel):
+    lineages: list[LineageEntry]
+    total_lineages: int