v1.5 - history and timeline as well as many datastructure updates added, polished, fixes

server/src/migrations/013_drop_host_org_id.sql

@@ -0,0 +1,48 @@
+-- ═══════════════════════════════════════════════════════════════
+-- 013  DROP events.host_org_id
+--
+-- Run this only once 012 is deployed and the site is reading
+-- hosts off event_hosts. Until then the column is the rollback:
+-- restoring the old v_events is one CREATE VIEW away.
+--
+-- SQLite refuses DROP COLUMN while the column is named by an index
+-- or a view, so both go first and the view comes back unchanged
+-- apart from no longer selecting e.host_org_id through e.*. No
+-- table rebuild, so no PRAGMA foreign_keys dance.
+--
+-- Check nothing still reads it before running:
+--   grep -rn host_org_id server/src client/src
+--
+--   PRAGMA user_version;   -- reads 12 before this file
+-- ═══════════════════════════════════════════════════════════════
+
+DROP INDEX IF EXISTS events_host_idx;
+DROP VIEW  IF EXISTS v_events;
+
+ALTER TABLE events DROP COLUMN host_org_id;
+
+CREATE VIEW v_events AS
+SELECT
+  e.*,
+  h.host_kind,
+  h.host_id,
+  h.host_name,
+  h.host_org_kind,
+  COALESCE(e.org_logo, h.host_logo)  AS effective_org_logo,
+  COALESCE(e.color,    h.host_color) AS effective_color,
+  COALESCE(
+    e.status,
+    CASE WHEN e.ends_on IS NOT NULL AND e.ends_on < date('now')
+         THEN 'past' ELSE 'upcoming' END
+  )                                  AS effective_status
+FROM events e
+LEFT JOIN v_event_hosts h
+  ON h.id = (
+    SELECT x.id
+      FROM v_event_hosts x
+     WHERE x.event_id = e.id
+     ORDER BY x.sort_order, x.id
+     LIMIT 1
+  );
+
+PRAGMA user_version = 13;  -- ← set to this migration's number