Initial Redmine tooling and local plugin forks

plugins/redmine_contacts_helpdesk/LOCAL_CHANGELOG.md

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+# Local Change Log
+
+This RedmineUP helpdesk plugin is maintained as local legacy code for the
+installed Redmine 3.4.4 environment. Keep entries focused on local behavior,
+rollback archives, and LAN test status.
+
+## 2026-04-21 - Helpdesk Search Read API And Outbox Coverage
+
+- Purpose: make helpdesk ticket and message identity first-class for external
+  operational search and indexing.
+- Rollback archives:
+  - `dist/redmine_contacts-4.1.2-local-before-helpdesk-search-20260421T215548Z.tar.gz`
+  - `dist/redmine_contacts_helpdesk-3.0.9-local-before-helpdesk-search-20260421T215548Z.tar.gz`
+- Touched behavior:
+  - Added read-only JSON endpoints under `helpdesk_search/*`.
+  - Extended the existing `view_helpdesk_tickets` permission to cover those
+    endpoints.
+  - Added event outbox callbacks for `HelpdeskTicket` and `JournalMessage` in
+    the local `redmine_event_outbox` plugin.
+- Payload policy:
+  - Includes ids, direction, message id, source, and non-body address metadata.
+  - Does not include full email bodies, private notes, attachment data, or BCC
+    addresses.
+- LAN test result: pending. Validate by creating/updating a controlled helpdesk
+  ticket and journal message, then checking `event_outbox_events` and the
+  `helpdesk_search/*` JSON endpoints on the LAN Redmine copy.