fix(goals): clear state-dependent caches on AASM transition + harden sweep job

- Goal: `display_status` and `projection_summary` memoize a value that
  depends on the AASM state column. Without resetting them after a
  transition the same instance keeps returning the pre-transition value.
  Hook `after_all_transitions :reset_state_dependent_caches!` undoes the
  memos so post-`archive!` / post-`pause!` reads see the new state.
- SweepExpiredGoalPledgesJob: the inner rescue covered per-pledge failures
  but not cursor-phase failures (DB blip, OOM mid-batch). Add an outer
  rescue that reports + re-raises so Sentry sees the failure and Sidekiq
  retries the job.

app/jobs/sweep_expired_goal_pledges_job.rb

@@ -3,6 +3,10 @@ class SweepExpiredGoalPledgesJob < ApplicationJob
 
   # Per-record rescue so one bad pledge (lock contention, missing FK,
   # stale row) doesn't abort the sweep and leave the rest open forever.
+  # The outer rescue catches query-phase failures (DB blip, OOM mid-cursor)
+  # so a single bad batch surfaces to Sentry rather than disappearing into
+  # Sidekiq's generic retry log. Re-raise after reporting so the retry
+  # behaviour still kicks in.
   def perform
     GoalPledge.open_and_expired_now.find_each do |pledge|
       pledge.expire!
@@ -10,5 +14,9 @@ class SweepExpiredGoalPledgesJob < ApplicationJob
       Rails.logger.error("SweepExpiredGoalPledgesJob: pledge ##{pledge.id} expire failed: #{e.class}: #{e.message}")
       Sentry.capture_exception(e) if defined?(Sentry)
     end
+  rescue StandardError => e
+    Rails.logger.error("SweepExpiredGoalPledgesJob: cursor failed: #{e.class}: #{e.message}")
+    Sentry.capture_exception(e) if defined?(Sentry)
+    raise
   end
 end

app/models/goal.rb

@@ -36,6 +36,8 @@ class Goal < ApplicationRecord
   end
 
   aasm column: :state do
+    after_all_transitions :reset_state_dependent_caches!
+
     state :active, initial: true
     state :paused
     state :completed
@@ -398,6 +400,16 @@ class Goal < ApplicationRecord
   end
 
   private
+    # Cleared after every AASM transition. The state column drives the
+    # display_status / projection_summary memos; without this the same
+    # instance keeps returning the pre-transition value if a controller
+    # calls archive! / pause! and then renders without reload.
+    def reset_state_dependent_caches!
+      %i[@display_status @projection_summary].each do |ivar|
+        remove_instance_variable(ivar) if instance_variable_defined?(ivar)
+      end
+    end
+
     # K/M shorthand for narrow chart annotations (axis ticks, projection
     # short-form, pending-pledge badge). Locale-aware currency symbol via
     # Money so the chart matches the rest of the app for EUR/GBP families.