docs(olids): add Compass Equivalent column to schema docs

[EddieDavison92]

What

Adds a Compass Equivalent column to each table in OLIDS/Documentation/Schema/*.md (22 files), restoring the mappings that were present in the archived Synapse schema dictionary but omitted from the new dbt schema docs in #89.

How

• Values are taken from Synapse-Platform-Archive/OLIDS-schema-dictionary.md, matched by column name per table. Compass itself has not changed, so rows carry the new OLIDS column name with the old Compass value.
• Where columns were renamed in the rewrite, mappings were carried across manually where the equivalence is unambiguous (e.g. SUBTYPE <- SUB_TYPE, RECORDED_DATE <- DATE_RECORDED, USUAL_GP_PRACTITIONER_IN_ROLE_ID <- CARE_MANAGER_PRACTITIONER_IN_ROLE_ID, plus two archive typos).
• Columns new to the dbt build (SOURCE_EXTRACTION_DATE, LDS_TRANSFORM_DATETIME, SLOT_ID, etc.) show --, following the archive convention.
• Every mapping was then validated against the actual Compass source schema. A handful of archive values referenced columns that do not exist in Compass and were corrected: result units columns are result_value_units (not a concept id), supplier codings are non_core_concept_id (not raw_concept_id), organisation/organization spelling on two encounter columns, and Compass has no age_at_event_baby/age_at_event_neonate, birth date part, clinical_status or referral specialty columns (now --). APPOINTMENT_PRACTITIONER.APPOINTMENT_ID had an evident copy-paste value in the archive and is --.

Notes

Four table rows in Patient_Address.md and Patient_Contact.md had fewer cells than their headers; they are padded so the new column aligns (also fixes four pre-existing MD056 lint errors). No other pre-existing content is modified, and markdownlint reports no new issues.

[EddieDavison92]

Heads up: after raising this I cross-checked every mapping against the actual Compass source schema and pushed a correction commit - the archived dictionary itself had a few values that don't exist in Compass (details in the description). All remaining mappings now validate against real Compass columns.