feat(destinations): a tap that preserves the suppression sentinel

EES writes 'c' where a figure is withheld and the categories sum to the
cohort, so counts and percentages are emitted as text with the sentinel
intact. safe_numeric must never be pointed at them.

School rows and the England reference need different establishment pins:
at national level selective schools, studios and UTCs are separate
populations rather than labels, so leaving establishment open multiplies
30 rows into 190. Two queries per period, each keeping its own level.

Verified against the live API for 2022/23: 135,240 school records over
4,508 schools, exactly 30 each, no duplicate keys, 31,382 sentinels kept.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BvdDKvFFSZuMVDH5fEyTob

pipeline/dags/school_data_pipeline.py

@@ -178,9 +178,19 @@ with DAG(
             bash_command=f"cd {PIPELINE_DIR} && {MELTANO_BIN} run tap-uk-ees target-postgres",
         )
 
+        # Destinations come from the EES query API rather than a release ZIP,
+        # so they are a separate tap. Run after extract_ees rather than beside
+        # it: both write to the raw schema and the loader is happier serial.
+        extract_ees_destinations = BashOperator(
+            task_id="extract_ees_destinations",
+            bash_command=f"cd {PIPELINE_DIR} && {MELTANO_BIN} run tap-uk-ees-destinations target-postgres",
+        )
+
+        extract_ees >> extract_ees_destinations
+
     dbt_build_ees = BashOperator(
         task_id="dbt_build",
-        bash_command=f"cd {PIPELINE_DIR}/transform && {DBT_BIN} build --profiles-dir . --target production --select stg_ees_ks2+ stg_legacy_ks2+ stg_ees_ks4+ stg_legacy_ks4+ stg_ees_census+ stg_ees_admissions+ stg_ees_ks2_national+ stg_ees_ks4_national+",
+        bash_command=f"cd {PIPELINE_DIR}/transform && {DBT_BIN} build --profiles-dir . --target production --select stg_ees_ks2+ stg_legacy_ks2+ stg_ees_ks4+ stg_legacy_ks4+ stg_ees_census+ stg_ees_admissions+ stg_ees_ks2_national+ stg_ees_ks4_national+ stg_ees_ks4_destinations+ stg_ees_ks5_destinations+",
     )
 
     sync_typesense_ees = BashOperator(