# Session snapshot — 2026-04-15

**Branch:** main  
**Commit:** f4ec8b1 — feat: implement AD backend aliases and fix identity shard async calls (#3)  
**Status:** ✅ Committed and pushed to origin/main

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## Session goals

Resolve all 7 active Pylance diagnostics in the identity shard caused by
call-site mismatches between identity.py and the AD adapter API, and validate
the fixes against the existing unit test suite.

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## Accomplishments

- **Diagnosed 7 Pylance errors** across two error classes:
  - `CoroutineType not assignable` — asyncio.to_thread wrapping async methods
  - `Attribute unknown` — call sites referencing methods not on the adapter class

- **Fixed async call semantics (identity.py)**
  - Removed all `asyncio.to_thread()` wrappers around adapter async methods
  - Replaced with direct `await _get_ad().<method>(...)` calls
  - Resolved: `ad_get_user` (line 60), `ad_get_group_members` (line 120)

- **Remapped missing method calls (identity.py)**
  - `search_users` → `search_users_by_name` (method renamed in adapter)
  - `get_stale_accounts` → `find_stale_users` (method renamed in adapter)
  - `get_disabled_accounts` → `query_users(filter_params={"enabled": False})`
  - `get_user_by_email` → bounded `query_users` page scan + in-memory email match
  - `get_groups` → temporary empty-list fallback + `logger.warning` + WIS-018 TODO

- **Preserved tool contracts** — `ad_get_group_members` keeps `list[dict]` return type;
  backend `list[str]` usernames are wrapped as `{"sAMAccountName": u}` objects

- **Added structured logging** — `import logging` + `logger = logging.getLogger(__name__)`
  added to identity shard; warning emitted when unimplemented group listing is called

- **Verified: 0 Pylance diagnostics** — confirmed via VS Code language server
- **Verified: 19/19 unit tests passing** — `tests/identity_tests/test_ad_adapter.py`

- **Live tool validation (mock mode)**
  - `scan_status_reconciliation` — detected EMP002 (Taylor Brooks) terminated in
    Workday but still enabled in AD
  - `ad_get_disabled_accounts` — returned David Kim (EMP-1004, UAC 514)
  - `nexus_audit_recent` — confirmed 13 clean READ-only audit entries, no errors

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## Technical debt / pending

| ID | Item | Priority |
| :--- | :--- | :---: |
| WIS-018 | Add `get_groups()` to `ActiveDirectoryIdentityBackend` to replace empty-list fallback in `ad_list_groups` | Medium |
| — | `ad_get_user_by_email` uses a full paginated scan; add a dedicated AD `mail` filter method in the backend if directory size becomes a latency concern | Low |
| — | `ADUserAdapter.to_canonical` reads raw LDAP field names (`sAMAccountName`, `mail`); the query_users email path returns normalized field names — field-name alignment between adapter and canonical transformer should be reviewed in a future pass | Low |

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## Next steps

1. **WIS-018 — Add `get_groups()` to ad_adapter.py**
   - Use `Get-ADGroup -Filter *` with `Name`, `DistinguishedName`, `GroupCategory` properties
   - Follow the existing `find_stale_users` pattern (PowerShell → JSON → normalized list)
   - Add unit test in `tests/identity_tests/test_ad_adapter.py`
   - Remove the temporary fallback + TODO from `ad_list_groups` in identity.py

2. **Integration smoke test** — when a non-production AD is available, run
   `pytest tests/identity_tests/test_integration.py -v` with `AD_TEST_USERNAME`
   and `AD_TEST_PASSWORD` set

3. **Field-name audit** — trace `query_users` output keys through `ADUserAdapter.to_canonical`
   to confirm the email-scan path in `ad_get_user_by_email` produces a valid canonical object

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## Environment

- **Python:** `.venv` (nexus-mcp)
- **Mock mode:** `USE_MOCK=true`
- **MCP server:** `nexus` (stdio, src/main.py)
- **Active shards:** identity, workday, audit, itsm, assets, logistics