feat: Add temporary account setting to disable Captain auto-resolve (#13680)

Add a temporary `captain_disable_auto_resolve` boolean setting on
accounts to prevent Captain from resolving conversations. Guards both
the scheduled resolution job and the assistant's resolve tool.

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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

app/models/account.rb

@@ -41,6 +41,7 @@ class Account < ApplicationRecord
         'audio_transcriptions': { 'type': %w[boolean null] },
         'auto_resolve_label': { 'type': %w[string null] },
         'keep_pending_on_bot_failure': { 'type': %w[boolean null] },
+        'captain_disable_auto_resolve': { 'type': %w[boolean null] },
         'conversation_required_attributes': {
           'type': %w[array null],
           'items': { 'type': 'string' }
@@ -90,6 +91,7 @@ class Account < ApplicationRecord
   store_accessor :settings, :audio_transcriptions, :auto_resolve_label
   store_accessor :settings, :captain_models, :captain_features
   store_accessor :settings, :keep_pending_on_bot_failure
+  store_accessor :settings, :captain_disable_auto_resolve
 
   has_many :account_users, dependent: :destroy_async
   has_many :agent_bot_inboxes, dependent: :destroy_async