feat: add confluence.signalHistory API route

Returns signal fire history for a symbol (last 6 months) with slot
names and body types. Used by the upcoming confluence chart to plot
signal markers on price data.

app/server/src/trpc/router.ts

@@ -33,7 +33,7 @@ import { computeOwnershipPercentages, fetchAndPersistFloat } from '../services/s
 import { EdgarAdapter } from '../adapters/EdgarAdapter.ts';
 import { OptionsAdapter, parseOptionChainRows } from '../adapters/OptionsAdapter.ts';
 import type { OptionChainRow, OptionGreeks } from '../adapters/OptionsAdapter.ts';
-import { CONFLUENCE_SLOTS, slotsByFamily, type SlotFamily } from '../confluence/confluenceSlots.ts';
+import { CONFLUENCE_SLOTS, slotsByFamily, type SlotFamily, confluenceslotById } from '../confluence/confluenceSlots.ts';
 import { CONFLUENCE_SLOT_IDS } from '../confluence/confluenceSlots.ts';
 import { ConfluenceRepository, rackFromSlots } from '../db/confluenceRepository.ts';
 import { runSlotBacktest, signalHistoryToStats, type ConfluenceFireEvent } from '../confluence/confluenceBacktest.ts';
@@ -5473,6 +5473,32 @@ const confluenceRouter = router({
       };
     }),
 
+  /** Signal fire history for a symbol (last 6 months). Used by the confluence chart. */
+  signalHistory: publicProcedure
+    .input(z.object({ symbol: z.string().min(1).max(12) }))
+    .query(({ ctx, input }) => {
+      const symbol = input.symbol.toUpperCase();
+      const repo = new ConfluenceRepository(ctx.db);
+      const allFires = repo.listSignalsForSymbol(symbol);
+      // Filter to last 6 months
+      const cutoff = new Date();
+      cutoff.setMonth(cutoff.getMonth() - 6);
+      const cutoffStr = cutoff.toISOString();
+      const fires = allFires
+        .filter((f) => f.firedAt >= cutoffStr)
+        .map((f) => {
+          const meta = confluenceslotById.get(f.slotId);
+          return {
+            slotId: f.slotId,
+            slotName: meta?.name ?? f.slotId,
+            body: (meta?.body ?? 'bull') as 'bull' | 'bear' | 'exit',
+            firedAt: f.firedAt,
+            qualityAtFire: f.qualityAtFire,
+          };
+        });
+      return { fires };
+    }),
+
   /** Create or update a user-owned rack. */
   saveRack: protectedProcedure
     .input(z.object({

app/src/lib/trpc.ts

@@ -1472,6 +1472,16 @@ export const api = {
       }>("confluence.backtest", { symbol, ...(opts?.weeks ? { weeks: opts.weeks } : {}) }),
     scorecard: (symbol?: string) =>
       trpcQuery<{ slots: unknown[]; note: string }>("confluence.scorecard", symbol ? { symbol } : {}),
+    signalHistory: (symbol: string) =>
+      trpcQuery<{
+        fires: Array<{
+          slotId: string;
+          slotName: string;
+          body: 'bull' | 'bear' | 'exit';
+          firedAt: string;
+          qualityAtFire: string;
+        }>;
+      }>("confluence.signalHistory", { symbol }),
     saveRack: (input: { id?: string; name: string; description?: string; slotIds: string[] }) =>
       trpcMutate<{ id: string; name: string; slotIds: string[]; isSystem: boolean; description: string | null }>("confluence.saveRack", input),
     corridorSnapshot: (symbol: string) =>