Add ocl index commands for ES reindexing

[jamlung-ri]

Summary

• Adds ocl index source concepts OWNER SOURCE and ocl index source mappings OWNER SOURCE — trigger reindexing for a source's concepts or mappings (requires source ownership, not superadmin)
• Adds ocl index expansion concepts/mappings OWNER COLLECTION VERSION EXPANSION — reindex a collection expansion's resources (admin only)
• Adds ocl index rebuild, ocl index populate, and ocl index resource RESOURCE — admin-level global ES index management

API endpoints covered

Command	Endpoint	Permission
index source concepts	POST /{owner_type}/{owner}/sources/{source}/[{version}/]concepts/indexes/	Source owner
index source mappings	POST /{owner_type}/{owner}/sources/{source}/[{version}/]mappings/indexes/	Source owner
index expansion concepts	POST /…/expansions/{expansion}/concepts/index/	Admin
index expansion mappings	POST /…/expansions/{expansion}/mappings/index/	Admin
index rebuild	POST /indexes/apps/rebuild/	Admin
index populate	POST /indexes/apps/populate/	Admin
index resource RESOURCE	POST /indexes/resources/{resource}/	Admin

Test plan

• ocl index source concepts WHO CIEL — triggers concept reindex, returns task ID
• ocl index source mappings WHO CIEL --version v2025-04-03 — scoped to a version
• ocl index source concepts WHO CIEL --single-batch --no-parallel
• ocl index rebuild — admin token required, returns task
• ocl index resource concepts --uri /orgs/WHO/ — admin batch reindex
• ocl index resource concepts (no filter) — should print usage error
• ocl index --help, ocl index source --help, ocl index expansion --help

🤖 Generated with Claude Code

[paynejd]

Thanks @jamlung-ri — this is a genuinely useful addition, and I verified all seven endpoints exist and behave as the code assumes. Worth calling out one thing you got right: correctly separating the JSON endpoints (source index) from the MultiPartParser-only admin endpoints (rebuild/populate/resource) via _post_multipart() — that's easy to get wrong, and the empty-202 handling is correct too.

A few changes before it can go in:

1. --version → --repo-version on index source concepts and index source mappings. This repo uses type-specific version flags (--repo-version for sources), documented in CLAUDE.md (Conventions) and README.md: "Never use a bare --version." Please rename to match the rest of the CLI — that means the Click option, the function parameter, and the version= argument in the client call.
2. Update README.md + docs/demos/. This adds a whole index command group but touches neither; the repo convention (also in CLAUDE.md) is to update both whenever commands/flags change, so they stay discoverable in the reference. When you do, please flag the global ops (rebuild, populate, resource) as admin-only — they're sysadmin-grade and we'd like that explicit.
3. Add a smoke test. #10 (just merged) landed a lightweight CliRunner pattern in tests/test_concept_commands.py; even one delegation test per command group would help here, especially since these kick off expensive/destructive reindex jobs. The index resource "no --ids/--uri/--filter → error" path is a good one to lock down too.
4. File a tracking ticket in OpenConceptLab/ocl_issues and link it. (That per-PR convention wasn't written down in this repo — on us — but we'd like the link going forward.)

The capability itself is the right shape — this is just conventions, docs, and tests before merge. Thanks for building it!