refactor(backend): rename projectSignals to projectEvents

packages/backend/convex/agentWorkspace.ts

@@ -73,7 +73,7 @@ export const ensureRun = mutation({
       status: "queued",
       updatedAt: timestamp,
     });
-    await ctx.db.insert("projectSignals", {
+    await ctx.db.insert("projectEvents", {
       createdAt: timestamp,
       data: { actorKey, daemonId: args.daemonId },
       issueId: issue._id,
@@ -116,7 +116,7 @@ export const updateArtifact = mutation({
       revision: artifact.revision + 1,
       updatedAt: timestamp,
     });
-    await ctx.db.insert("projectSignals", {
+    await ctx.db.insert("projectEvents", {
       createdAt: timestamp,
       data: { path: args.path, revision: artifact.revision + 1 },
       issueId: issue._id,
@@ -162,7 +162,7 @@ export const setStatus = mutation({
         : {}),
       ...(terminal ? { completedAt: timestamp } : {}),
     });
-    await ctx.db.insert("projectSignals", {
+    await ctx.db.insert("projectEvents", {
       createdAt: timestamp,
       data: { summary: args.summary?.slice(0, 1000) },
       issueId: issue._id,