Add global sync summary component for all providers (#588)

* Add shared sync statistics collection and provider sync summary UI

- Introduced `SyncStats::Collector` concern to centralize sync statistics logic, including account, transaction, holdings, and health stats collection.
- Added collapsible `ProviderSyncSummary` component for displaying sync summaries across providers.
- Updated syncers (e.g., `LunchflowItem::Syncer`) to use the shared collector methods for consistent stats calculation.
- Added rake tasks under `dev:sync_stats` for testing and development purposes, including fake stats generation with optional issues.
- Enhanced provider-specific views to include sync summaries using the new shared component.

* Refactor `ProviderSyncSummary` to improve maintainability

- Extracted `severity_color_class` to simplify severity-to-CSS mapping.
- Replaced `holdings_label` with `holdings_label_key` for streamlined localization.
- Updated locale file to separate `found` and `processed` translations for clarity.

---------

Signed-off-by: Juan José Mata <juanjo.mata@gmail.com>
Co-authored-by: Josh Waldrep <joshua.waldrep5+github@gmail.com>
Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

app/models/lunchflow_item/syncer.rb

@@ -1,4 +1,6 @@
 class LunchflowItem::Syncer
+  include SyncStats::Collector
+
   attr_reader :lunchflow_item
 
   def initialize(lunchflow_item)
@@ -10,18 +12,13 @@ class LunchflowItem::Syncer
     sync.update!(status_text: "Importing accounts from Lunchflow...") if sync.respond_to?(:status_text)
     lunchflow_item.import_latest_lunchflow_data
 
-    # Phase 2: Check account setup status and collect sync statistics
+    # Phase 2: Collect setup statistics using shared concern
     sync.update!(status_text: "Checking account configuration...") if sync.respond_to?(:status_text)
-    total_accounts = lunchflow_item.lunchflow_accounts.count
-    linked_accounts = lunchflow_item.lunchflow_accounts.joins(:account).merge(Account.visible)
-    unlinked_accounts = lunchflow_item.lunchflow_accounts.includes(:account).where(accounts: { id: nil })
+    collect_setup_stats(sync, provider_accounts: lunchflow_item.lunchflow_accounts)
 
-    # Store sync statistics for display
-    sync_stats = {
-      total_accounts: total_accounts,
-      linked_accounts: linked_accounts.count,
-      unlinked_accounts: unlinked_accounts.count
-    }
+    # Check for unlinked accounts
+    linked_accounts = lunchflow_item.lunchflow_accounts.joins(:account_provider)
+    unlinked_accounts = lunchflow_item.lunchflow_accounts.left_joins(:account_provider).where(account_providers: { id: nil })
 
     # Set pending_account_setup if there are unlinked accounts
     if unlinked_accounts.any?
@@ -34,6 +31,7 @@ class LunchflowItem::Syncer
     # Phase 3: Process transactions and holdings for linked accounts only
     if linked_accounts.any?
       sync.update!(status_text: "Processing transactions and holdings...") if sync.respond_to?(:status_text)
+      mark_import_started(sync)
       Rails.logger.info "LunchflowItem::Syncer - Processing #{linked_accounts.count} linked accounts"
       lunchflow_item.process_accounts
       Rails.logger.info "LunchflowItem::Syncer - Finished processing accounts"
@@ -45,14 +43,19 @@ class LunchflowItem::Syncer
         window_start_date: sync.window_start_date,
         window_end_date: sync.window_end_date
       )
+
+      # Phase 5: Collect transaction statistics
+      account_ids = linked_accounts.includes(:account_provider).filter_map { |la| la.current_account&.id }
+      collect_transaction_stats(sync, account_ids: account_ids, source: "lunchflow")
     else
       Rails.logger.info "LunchflowItem::Syncer - No linked accounts to process"
     end
 
-    # Store sync statistics in the sync record for status display
-    if sync.respond_to?(:sync_stats)
-      sync.update!(sync_stats: sync_stats)
-    end
+    # Mark sync health
+    collect_health_stats(sync, errors: nil)
+  rescue => e
+    collect_health_stats(sync, errors: [ { message: e.message, category: "sync_error" } ])
+    raise
   end
 
   def perform_post_sync