Refatcor policies management

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/coredata/migrations/20250424T094500Z.sql

@@ -0,0 +1,60 @@
+CREATE TABLE policy_versions (
+    id TEXT PRIMARY KEY,
+    tenant_id TEXT NOT NULL,
+    policy_id TEXT NOT NULL REFERENCES policies(id) ON DELETE CASCADE,
+    version_number INTEGER NOT NULL,
+    content TEXT NOT NULL,
+    changelog TEXT NOT NULL,
+    created_by TEXT NOT NULL,
+    status policy_status NOT NULL,
+    published_by TEXT REFERENCES peoples(id),
+    published_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    UNIQUE(policy_id, version_number)
+);
+
+INSERT INTO policy_versions (
+    id,
+    tenant_id,
+    policy_id,
+    version_number,
+    content,
+    changelog,
+    created_by,
+    status,
+    published_by,
+    published_at,
+    created_at,
+    updated_at
+)
+SELECT 
+    generate_gid(decode_base64_unpadded(p.tenant_id), 16),
+    p.tenant_id,
+    p.id,
+    1,
+    '',
+    'Initial version',
+    p.owner_id,
+    'DRAFT',
+    NULL,
+    NULL,
+    p.created_at,
+    p.updated_at
+FROM policies p;
+
+ALTER TABLE policies RENAME COLUMN name TO title;
+ALTER TABLE policies DROP COLUMN content;
+ALTER TABLE policies ADD COLUMN description TEXT NOT NULL DEFAULT '';
+ALTER TABLE policies ALTER COLUMN owner_id DROP NOT NULL;
+ALTER TABLE policies DROP COLUMN review_date;
+ALTER TABLE policies DROP COLUMN status;
+ALTER TABLE policies ADD COLUMN current_published_version INTEGER;
+
+UPDATE policies p
+SET current_published_version = 1
+WHERE EXISTS (
+    SELECT 1 FROM policy_versions pv 
+    WHERE pv.policy_id = p.id 
+    AND pv.status = 'published'
+);