feat(events): domain event outbox and the two reports that close the loop

Tasks 07 through 13 each changed something the rest of the system might want
to know about, with no contract for saying so. And task 05 shipped a powerful
segment editor with no feedback on whether a clinic defined its segments right.

Events
- A closed list of names, because a consumer branches on the string and a
  one-letter typo would produce an event nobody hears and no error either
- Payloads carry uuids and scalars only; non-scalars are dropped, not
  serialised, so a consumer always fetches fresh rather than reading a stale
  detached entity
- record() deliberately does not flush: the event row commits with the change
  it describes, so a rolled-back transaction leaves no event behind. A test
  pins exactly that
- app:events:publish drains the outbox; five failed attempts park a row with
  its error rather than deleting it, because a silently dropped event is a
  loss with no trace. app:events:prune only ever removes published rows

Reports
- Resource utilisation separates available, occupied and active minutes.
  The gap between occupied and active is what exposes a bad segment
  definition, and available is multiplied by capacity so a three-chair room
  does not read as permanently over 100%
- A resource with no calendar reports utilization: null, not zero — dividing
  by zero means something different from being idle
- Plan accuracy compares planned against actual duration per service and
  flags both directions: running short wastes capacity that could have been
  sold. Its row links straight to editing that service's segments, because a
  report with no route to a fix does not get read

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

migrations/Version20260731084058.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260731084058 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE TABLE domain_events (id BIGINT AUTO_INCREMENT NOT NULL, uuid VARCHAR(36) NOT NULL, name VARCHAR(60) NOT NULL, payload JSON NOT NULL, occurred_at INT NOT NULL, published_at INT DEFAULT NULL, attempts SMALLINT DEFAULT 0 NOT NULL, last_error VARCHAR(255) DEFAULT NULL, entity_type VARCHAR(10) NOT NULL, entity_id INT NOT NULL, UNIQUE INDEX UNIQ_3CE45B83D17F50A6 (uuid), INDEX idx_de_pending (published_at, occurred_at), INDEX idx_de_tenant (entity_type, entity_id, occurred_at), INDEX idx_de_name (name, occurred_at), PRIMARY KEY (id)) DEFAULT CHARACTER SET utf8mb4');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('DROP TABLE domain_events');
+    }
+}