[dwolfson]

Rebased onto main after #474 merged: this PR now contains only its own two commits.

Follow-up to ISSUE-160 (PYEGERIA_ISSUES.md), at the owner's request: "fix them all in a new pr". It fixes the template-placeholder gaps that #474 left open.

Changes (pyegeria/omvs/automated_curation.py)

• No more literal ~{name}~ from unset arguments. Egeria stores any placeholder that isn't sent as the literal ~{name}~, and body_slimmer drops None values. A new helper, _placeholder_values, now sends "" for unset placeholders in all 13 hard-coded template builders. One visible effect: a folder created without a file system gets the qualified name FileFolder:::/path.
• Postgres server and database:
  • New optional parameters secrets_store_path_name and secrets_collection_name, sent as secretsStorePathName and secretsCollectionName; Egeria's templates now take credentials from a secrets store.
  • New optional version on both, and resource_name on the server (defaults to the server name).
  • db_user and db_pwd are now optional and deprecated. The templates no longer have those placeholders, so the values aren't sent, and passing either one raises a DeprecationWarning.
• Kafka: sends resourceName (defaults to the server name) and versionIdentifier.
• Unity Catalog: new optional parameters on each async method and its sync wrapper:
  • server: resource_name;
  • catalog: uc_server_qualified_name;
  • table and function: root_schema_type_qualified_name;
  • volume: directory_path_name and local_storage_location.
• "Keystore File" fallback: unchanged. It's a real Egeria template, and on the live platform both "YAML File Secrets Collection" and "Keystore File" resolve to it.

Existing calls keep working: every new parameter is optional and comes after the existing ones.

Not in this PR: Dr.Egeria's "Postgres Server Element" and "Postgres Database Element" commands still pass the user ID and password, which are now ignored with a warning. Their command specs need secrets-store attributes; that's a separate change.

Testing

• tests/micro-tests/test_issue_160_remaining_placeholders.py: 11 cases. All fail on Fix template builders missing placeholders Egeria added: directoryAddress, fileAddress and more (ISSUE-160) #474's code and pass with this change.
• The full micro-test suite (1,420 tests) passes in a clean python:3.13-slim container with no Egeria.
• Live, on Egeria main 05a5e982: a throwaway PostgreSQL server created with the secrets-store options and no user ID or password, and a folder created with no optional arguments. Neither left any ~{...}~ on the element, its Connection or its Endpoint. The server was never registered as a JDBC catalog target. Both were purged and every GUID verified gone. Not confirmed: where Egeria stored the secrets-store values.

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