fix(auth): use internal secret for web→server calls instead of cookie forwarding

Cookie forwarding between dash.droidclaw.ai and tunnel.droidclaw.ai was
unreliable. Now the web app passes userId + shared internal secret via
headers. Also removes debug logging from device auth and session middleware.

server/src/env.ts

@@ -2,6 +2,7 @@ export const env = {
   DATABASE_URL: process.env.DATABASE_URL!,
   PORT: parseInt(process.env.PORT || "8080"),
   CORS_ORIGIN: process.env.CORS_ORIGIN || "http://localhost:5173",
+  INTERNAL_SECRET: process.env.INTERNAL_SECRET || "",
 };
 
 if (!env.DATABASE_URL) {

server/src/middleware/auth.ts

@@ -3,6 +3,7 @@ import { db } from "../db.js";
 import { session as sessionTable, user as userTable } from "../schema.js";
 import { eq } from "drizzle-orm";
 import { getCookie } from "hono/cookie";
+import { env } from "../env.js";
 
 /** Hono Env type for routes protected by sessionMiddleware */
 export type AuthEnv = {
@@ -13,16 +14,35 @@ export type AuthEnv = {
 };
 
 export async function sessionMiddleware(c: Context, next: Next) {
-  // Extract session token from cookie (same approach as dashboard WS auth)
+  // ── Internal server-to-server auth (web app → server) ──
+  const internalSecret = c.req.header("x-internal-secret");
+  const internalUserId = c.req.header("x-internal-user-id");
+
+  if (internalSecret && internalUserId && env.INTERNAL_SECRET && internalSecret === env.INTERNAL_SECRET) {
+    const users = await db
+      .select({ id: userTable.id, name: userTable.name, email: userTable.email })
+      .from(userTable)
+      .where(eq(userTable.id, internalUserId))
+      .limit(1);
+
+    if (users.length === 0) {
+      return c.json({ error: "unauthorized" }, 401);
+    }
+
+    c.set("user", users[0]);
+    c.set("session", { id: "internal", userId: internalUserId });
+    await next();
+    return;
+  }
+
+  // ── Cookie-based auth (browser → server) ──
   const rawCookie = getCookie(c, "better-auth.session_token");
   if (!rawCookie) {
-    console.log(`[SessionMiddleware] No session cookie. Headers: ${JSON.stringify(Object.fromEntries(c.req.raw.headers.entries())).slice(0, 200)}`);
     return c.json({ error: "unauthorized" }, 401);
   }
 
   // Token may have a signature appended after a dot — use only the token part
   const token = rawCookie.split(".")[0];
-  console.log(`[SessionMiddleware] cookie prefix: ${rawCookie.slice(0, 20)}... token prefix: ${token.slice(0, 20)}...`);
 
   // Direct DB lookup
   const rows = await db

server/src/ws/device.ts

@@ -92,12 +92,6 @@ export async function handleDeviceMessage(
     try {
       // Hash the incoming key and look it up directly in the DB
       const hashedKey = await hashApiKey(msg.apiKey);
-      console.log(`[Device Auth] key prefix: ${msg.apiKey.slice(0, 10)}... hash: ${hashedKey.slice(0, 16)}...`);
-
-      // Debug: list all keys in DB
-      const allKeys = await db.select({ id: apikey.id, keyPrefix: apikey.start, hash: apikey.key, enabled: apikey.enabled }).from(apikey);
-      console.log(`[Device Auth] DB has ${allKeys.length} keys:`, allKeys.map(k => `${k.keyPrefix ?? "?"} hash=${k.hash.slice(0, 16)}... enabled=${k.enabled}`));
-
       const rows = await db
         .select({ id: apikey.id, userId: apikey.userId, enabled: apikey.enabled, expiresAt: apikey.expiresAt })
         .from(apikey)
@@ -105,7 +99,6 @@ export async function handleDeviceMessage(
         .limit(1);
 
       if (rows.length === 0 || !rows[0].enabled) {
-        console.log(`[Device Auth] REJECTED: no matching key found (or disabled)`);
         ws.send(
           JSON.stringify({
             type: "auth_error",