feat: T4b/T4c wave 8 - weather history, phenology, honey chain, Telegram base

- Weather history from Open-Meteo behind an adapter: worker loop
  phenology-weather with backoff, Retry-After, User-Agent, chunked
  writes and forecast-to-archive correction
- Phenology: growing degree sum per DWD, phase from reports, GTS and
  calendar, calibration from previous years, daily job step,
  SeasonService reads the stored state
- Honey chain: prefill for extractions and batches (proposals only),
  plausibility and withdrawal warnings, Extraction lock, chain events
  and batch.created webhook from HoneyBatchRecorded
- Telegram base: schema, NotificationDelivery outbox, hardened bot
  client, startup check without crash, no-network-outside-loops guard
- ARCHITECTURE.md: sections 11.11-11.13, assumptions 42-46, env table

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Backend/src/backup/backup.service.spec.ts

@@ -1486,6 +1486,26 @@ describe('BackupService', () => {
       expect(MODELS_EXCLUDED_FROM_BACKUP).not.toHaveProperty('PhenologyReport');
     });
 
+    it('excludes the Telegram models and the delivery queue from the backup, each with a reason', async () => {
+      const bundle = await service.exportAll();
+
+      for (const [model, key] of [
+        ['TelegramLink', 'telegramLink'],
+        ['TelegramLinkToken', 'telegramLinkToken'],
+        ['NotificationDelivery', 'notificationDelivery'],
+        ['TelegramPollState', 'telegramPollState'],
+      ] as const) {
+        expect(bundle.data).not.toHaveProperty(key);
+        expect(MODELS_EXCLUDED_FROM_BACKUP[model]).toEqual(
+          expect.stringMatching(/.{30,}/),
+        );
+      }
+      expect(MODELS_EXCLUDED_FROM_BACKUP.TelegramLink).toMatch(/re-link/);
+      expect(MODELS_EXCLUDED_FROM_BACKUP.NotificationDelivery).toMatch(
+        /resend old messages/,
+      );
+    });
+
     it('restores phenology reports after the apiaries, remapping a user that does not exist', async () => {
       await importData({
         apiary: [{ id: 'apiary-1' }],