Remove Redis dependency from RateLimiterWrapper

- Always use ETS-based RateLimiter instead of checking for REDIS_URL
- Remove RedisRateLimiter calls that were causing crashes
- Simplify wrapper to only delegate to Aprsme.RateLimiter

CLAUDE.md

@@ -61,4 +61,8 @@ This is a web application written using the Phoenix web framework.
 - Use `Task.async_stream(collection, callback, options)` for concurrent enumeration with back-pressure. The majority of times you will want to pass `timeout: :infinity` as option
 - **Always run mix format after changing any Elixir files**
 
-[... rest of the file remains unchanged ...]
+## Git Commit Guidelines
+
+- **Never** add "Co-Authored-By: Claude" or similar AI co-authorship tags to commits
+- Commits should appear as authored solely by the user (Graham)
+- Keep commit messages clear and concise, describing what changed and why

lib/aprsme/rate_limiter_wrapper.ex

@@ -1,46 +1,30 @@
 defmodule Aprsme.RateLimiterWrapper do
   @moduledoc """
-  Wrapper that provides the same API for both Hammer and RedisRateLimiter
+  Wrapper that provides the same API using ETS-based rate limiter
   """
 
   @doc """
   Check rate limit - compatible with Hammer.hit/3 API
   """
   def hit(bucket, scale_ms, limit) do
-    if using_redis?() do
-      Aprsme.RedisRateLimiter.check_rate(bucket, limit, scale_ms)
-    else
-      Aprsme.RateLimiter.hit(bucket, scale_ms, limit)
-    end
+    Aprsme.RateLimiter.hit(bucket, scale_ms, limit)
   end
 
   @doc """
   Reset rate limit for a bucket
   """
-  def reset(bucket) do
-    if using_redis?() do
-      Aprsme.RedisRateLimiter.reset(bucket)
-    else
-      # Hammer doesn't provide a reset function
-      # Best we can do is return ok
-      :ok
-    end
+  def reset(_bucket) do
+    # ETS-based rate limiter doesn't provide a reset function
+    # Return ok
+    :ok
   end
 
   @doc """
   Get current count for a bucket
   """
-  def count(bucket, scale_ms) do
-    if using_redis?() do
-      Aprsme.RedisRateLimiter.count(bucket, scale_ms)
-    else
-      # Hammer doesn't provide a count function
-      # Return 0 as default
-      {:ok, 0}
-    end
-  end
-
-  defp using_redis? do
-    System.get_env("REDIS_URL") != nil
+  def count(_bucket, _scale_ms) do
+    # ETS-based rate limiter doesn't provide a count function
+    # Return 0 as default
+    {:ok, 0}
   end
 end