Tear down workflows when archiving documents

Archive and bulk archive now void pending approval quorums and
cancel requested signatures before freezing the document. Unarchive
reverts any leftover pending approval to draft. A migration backfills
archived documents that still carry in-flight workflow rows.

Signed-off-by: Cursor Agent <cursoragent@cursor.com>

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>

pkg/coredata/migrations/20260711T095134Z.sql

@@ -0,0 +1,66 @@
+-- Copyright (c) 2026 Probo Inc <hello@probo.com>.
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted, provided that the above
+-- copyright notice and this permission notice appear in all copies.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+-- REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+-- AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+-- INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+-- LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+-- OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+-- PERFORMANCE OF THIS SOFTWARE.
+
+-- Archived documents must not retain in-flight approval or signature workflows.
+-- Backfill rows that were archived before archive teardown was enforced in the
+-- application layer.
+
+UPDATE document_version_approval_decisions d
+SET
+    state = 'VOIDED',
+    updated_at = NOW()
+FROM document_version_approval_quorums q
+INNER JOIN document_versions dv ON dv.id = q.version_id
+INNER JOIN documents doc ON doc.id = dv.document_id
+WHERE
+    d.quorum_id = q.id
+    AND d.state = 'PENDING'
+    AND doc.archived_at IS NOT NULL;
+
+UPDATE document_version_approval_quorums q
+SET
+    status = 'VOIDED',
+    updated_at = NOW()
+FROM document_versions dv
+INNER JOIN documents doc ON doc.id = dv.document_id
+WHERE
+    q.version_id = dv.id
+    AND q.status = 'PENDING'
+    AND doc.archived_at IS NOT NULL;
+
+UPDATE document_versions dv
+SET
+    status = 'DRAFT',
+    major = CASE
+        WHEN doc.current_published_major IS NOT NULL THEN doc.current_published_major
+        ELSE 0
+    END,
+    minor = CASE
+        WHEN doc.current_published_major IS NOT NULL THEN doc.current_published_minor + 1
+        ELSE 1
+    END,
+    updated_at = NOW()
+FROM documents doc
+WHERE
+    dv.document_id = doc.id
+    AND doc.archived_at IS NOT NULL
+    AND dv.status = 'PENDING_APPROVAL';
+
+DELETE FROM document_version_signatures dvs
+USING document_versions dv
+INNER JOIN documents doc ON doc.id = dv.document_id
+WHERE
+    dvs.document_version_id = dv.id
+    AND dvs.state = 'REQUESTED'
+    AND doc.archived_at IS NOT NULL;