SimplyBased 0.1.0 — Couchbase-native ActiveModel ORM

A from-scratch fork of simply_couch's model layer that runs on Couchbase
natively: `include SimplyBased::Model` instead of `include SimplyCouch::Model`.

- SimplyBased::Store replaces the CouchDB layer: KV documents, N1QL/SQL++
  finders + lazily-created GSIs, CAS mapped onto _rev. No design documents or
  JavaScript map/reduce — the hand-written association views become N1QL
  (belongs_to/has_many/has_one scalar FK; habtm via ANY ... SATISFIES + array
  index, or KV multi-get on the storing side).
- Redis replacements on the same cluster: Counter (atomic increment/decrement),
  Cache (ActiveSupport::Cache::Store over KV+TTL, drop-in Rails.cache/ActiveJob),
  Lock (insert-if-absent + TTL + CAS-checked release).
- Runs the simply_couch test suite against live Couchbase: 378/432 applicable
  examples green (CouchDB-mechanic specs tagged :couchdb_only and excluded).
- Remaining: ancestry (tree) + embedded_in reverse-lookups (recursive/embedded
  N1QL) and a few pagination/lifecycle edges.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

spec/equality_spec.rb

@@ -0,0 +1,45 @@
+require 'spec_helper'
+
+describe "Equality and hashing" do
+  describe "unsaved records" do
+    it "two distinct new records are not equal" do
+      a = User.new(name: 'a')
+      b = User.new(name: 'a')
+      (a == b).should be false
+      a.eql?(b).should be false
+    end
+
+    it "a new record equals itself" do
+      a = User.new(name: 'a')
+      (a == a).should be true
+    end
+
+    it "new records are distinct inside a Set / uniq / include?" do
+      a = User.new(name: 'a')
+      b = User.new(name: 'b')
+      [a, b].uniq.size.should eq(2)
+      Set.new([a, b]).size.should eq(2)
+      [a].include?(b).should be false
+    end
+  end
+
+  describe "persisted records" do
+    it "two instances with the same _id and _rev are equal" do
+      a = User.new(name: 'a')
+      b = User.new(name: 'b')
+      a._id = b._id = 'same-id'
+      a._rev = b._rev = '1-abc'
+      (a == b).should be true
+      a.hash.should eq(b.hash)
+    end
+
+    it "same _id but different _rev are not equal" do
+      a = User.new
+      b = User.new
+      a._id = b._id = 'same-id'
+      a._rev = '1-abc'
+      b._rev = '2-def'
+      (a == b).should be false
+    end
+  end
+end