Add filter, add READMES

python_services/owl_imports_combiner/README.md

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+# owl_imports_combiner (Python service)
+
+One-shot utility container that loads an ontology and recursively follows `owl:imports`, then writes a single combined Turtle file.
+
+This is useful to precompute a single TTL for AnzoGraph loading.
+
+## Run
+
+Via Docker Compose:
+
+```bash
+docker compose run --rm owl_imports_combiner
+```
+
+The service mounts `./data → /data`, so use output paths under `/data/...`.
+
+## Environment variables
+
+- `COMBINE_OWL_IMPORTS_ON_START` (default `false`)
+  - If `false`, the container exits without doing anything.
+- `COMBINE_ENTRY_LOCATION`
+  - Entry ontology: local path, `file://` URI, or `http(s)` URL.
+  - If unset, falls back to `TTL_PATH`.
+- `COMBINE_OUTPUT_LOCATION`
+  - Output location (local file path or `file://` URI). Required if entry is an `http(s)` URL.
+- `COMBINE_OUTPUT_NAME` (default `combined_ontology.ttl`)
+  - Used only when `COMBINE_OUTPUT_LOCATION` is unset and entry is a local file.
+- `COMBINE_FORCE` (default `false`)
+  - Overwrite output if it already exists.
+- `LOG_LEVEL` (default `INFO`)
+
+## Behavior
+
+- If the output exists and `COMBINE_FORCE=false`, it skips the combine step.
+- Output is written atomically via a temporary file + rename.
+