feat: Implement core Discord clone functionality including Convex backend, Electron frontend, and UI components for chat, voice, and settings.

convex/channelKeys.ts

@@ -0,0 +1,72 @@
+import { query, mutation } from "./_generated/server";
+import { v } from "convex/values";
+
+// Batch upsert encrypted key bundles
+export const uploadKeys = mutation({
+  args: {
+    keys: v.array(
+      v.object({
+        channelId: v.id("channels"),
+        userId: v.id("userProfiles"),
+        encryptedKeyBundle: v.string(),
+        keyVersion: v.number(),
+      })
+    ),
+  },
+  returns: v.object({ success: v.boolean(), count: v.number() }),
+  handler: async (ctx, args) => {
+    for (const keyData of args.keys) {
+      if (!keyData.channelId || !keyData.userId || !keyData.encryptedKeyBundle) {
+        continue;
+      }
+
+      // Check if exists (upsert)
+      const existing = await ctx.db
+        .query("channelKeys")
+        .withIndex("by_channel_and_user", (q) =>
+          q.eq("channelId", keyData.channelId).eq("userId", keyData.userId)
+        )
+        .unique();
+
+      if (existing) {
+        await ctx.db.patch(existing._id, {
+          encryptedKeyBundle: keyData.encryptedKeyBundle,
+          keyVersion: keyData.keyVersion,
+        });
+      } else {
+        await ctx.db.insert("channelKeys", {
+          channelId: keyData.channelId,
+          userId: keyData.userId,
+          encryptedKeyBundle: keyData.encryptedKeyBundle,
+          keyVersion: keyData.keyVersion,
+        });
+      }
+    }
+
+    return { success: true, count: args.keys.length };
+  },
+});
+
+// Get user's encrypted key bundles (reactive!)
+export const getKeysForUser = query({
+  args: { userId: v.id("userProfiles") },
+  returns: v.array(
+    v.object({
+      channel_id: v.id("channels"),
+      encrypted_key_bundle: v.string(),
+      key_version: v.number(),
+    })
+  ),
+  handler: async (ctx, args) => {
+    const keys = await ctx.db
+      .query("channelKeys")
+      .withIndex("by_user", (q) => q.eq("userId", args.userId))
+      .collect();
+
+    return keys.map((k) => ({
+      channel_id: k.channelId,
+      encrypted_key_bundle: k.encryptedKeyBundle,
+      key_version: k.keyVersion,
+    }));
+  },
+});