Let the same choice open notes and drafts

The picker in the bell now governs both lists, so note_subscriptions is
renamed to colleague_subscriptions -- a name that only mentions notes would
mislead the next reader.

Reading and writing a draft now reach differently far. hire_drafts_owner
(for all) is split into four policies: select lets in your own drafts and
those of the people you added, while insert/update/delete stay with the
owner. A draft is unfinished work with no lock and no history; two people
writing into the same row would overwrite each other silently.

That split forces a change in the actions: a policy does not reject a write,
it lets it hit no rows. saveHireDraft and deleteHireDraft now read the row
count instead of reporting success over a row that never changed.

The card shows a foreign draft with its author and without Fortsetzen or
Loeschen -- offering a button that reliably ends in a database error is a
promise without cover.

check-schema-types.mjs learns `alter table ... rename to`; without it the
drift check reports one rename as two errors.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

scripts/check-schema-types.mjs

@@ -114,6 +114,19 @@ function parseMigrations() {
       }
       const anweisung = sql.slice(kopf.index + kopf[0].length, ende);
 
+      // Eine umbenannte Tabelle behält ihre Spalten und wechselt den Namen.
+      // Ohne diesen Fall stünde der alte Name weiter im Modell aus den
+      // Migrationen, und der Abgleich meldete zwei Fehler für eine Änderung:
+      // die alte Tabelle fehle in lib/types.ts, die neue kenne das Schema
+      // nicht. `rename constraint` und `rename column` sind davon nicht
+      // betroffen — nur das unmittelbare `rename to`.
+      const umbenannt = anweisung.match(/^\s*rename to (\w+)/i);
+      if (umbenannt) {
+        tables.delete(kopf[1].toLowerCase());
+        tables.set(umbenannt[1].toLowerCase(), tabelle);
+        continue;
+      }
+
       for (const m of anweisung.matchAll(/\badd column (?:if not exists )?(\w+)/gi)) {
         tabelle.add(m[1].toLowerCase());
       }