activity-core/workplans/ADHOC-2026-06-01.md

---
id: ADHOC-2026-06-01
type: workplan
title: "Ad hoc — activity-core opportunistic fixes 2026-06-01"
domain: custodian
repo: activity-core
status: ready
owner: custodian
topic_slug: custodian
created: "2026-06-01"
updated: "2026-06-01"
state_hub_workstream_id: "36162ff0-9b47-47c4-8602-56767f9b7a1c"
---

# ADHOC-2026-06-01 — activity-core opportunistic fixes

Captured during the CUST-WP-0045 T06 cutover prep session. The dev worker was
brought up and surfaced an unrelated, pre-existing bug in the state-hub
context resolver that is independent of the daily triage canary.

## Tasks

### T01 - Fix repo_sbom_status resolver route and params

```task
id: ADHOC-2026-06-01-T01
status: done
priority: low
state_hub_task_id: "87b56da9-e692-4350-9aff-47080414ec06"
```

`src/activity_core/context_resolvers/state_hub.py` resolves
`query: repo_sbom_status` by calling `GET /sbom/status?repo={repo_slug}`, but
State Hub does not expose `/sbom/status` at all. Actual SBOM routes are
`/sbom/`, `/sbom/{repo_slug}`, `/sbom/snapshots/`, `/sbom/snapshots/{id}`,
`/sbom/ingest/`, `/sbom/report/licences/`.

Compounding bug: the only ActivityDefinition using this query is
`activity-definitions/weekly-sbom-staleness.md`, which passes
`params: { repos: all }`. The resolver reads `params.get("repo_slug", "")`,
so the lookup URL collapses to `/sbom/status?repo=` regardless of the
ActivityDefinition value.

Symptom: every Monday at 09:00 Europe/Berlin (and on worker startup after a
missed Monday tick), the `weekly-sbom-staleness` workflow runs and the
resolver logs `HTTP/1.1 404 Not Found` for `GET /sbom/status?repo=`. The
`_fetch_json` helper swallows the error and returns `{}`, so the workflow
continues but the downstream rule evaluates
`context.repos.sbom_age_days > 30` against an empty dict and never spawns
the intended SBOM rescan tasks. The weekly SBOM staleness check has been
silently no-op for as long as this route mismatch has existed.

Fix scope:

1. Decide the contract — single-repo lookup (current parameter shape suggests
   this) versus multi-repo bulk lookup (`repos: all` suggests this).
2. Update the resolver to call the actual State Hub route(s):
   - single repo: `GET /sbom/{repo_slug}` (or `/sbom/{repo_slug}/status` if a
     status-shaped projection is preferred and exists).
   - bulk: iterate the State Hub `/repos/` list and call `/sbom/{repo_slug}`
     per repo, returning a list bound to `context.repos`.
3. Update `activity-definitions/weekly-sbom-staleness.md` to match: either pass
   a real `repo_slug` per definition (multiple definitions, one per repo) or
   keep `repos: all` and let the resolver fan out.
4. Update the rule expression to traverse the resulting shape — currently
   `context.repos.sbom_age_days` assumes a single object; if the resolver
   returns a list, the rule needs `any(repo.sbom_age_days > 30 for repo in
   context.repos)` or an equivalent per-repo evaluation.
5. Add a resolver unit test that asserts the resolver hits a route State Hub
   actually serves, and an integration test against a fixture State Hub
   response so this regression cannot repeat.

Out of scope for this adhoc:

- Decoupling SBOM staleness rules from the state hub resolver.
- Rewriting the SBOM ingestion pipeline or `sbom_source` policy.
- Promoting this to a full workplan unless the multi-repo decision turns out
  to need design discussion.

Done when `weekly-sbom-staleness` runs cleanly against a live State Hub on
Monday and either spawns SBOM rescan tasks for stale repos or leaves a clear
"all SBOMs fresh" audit row — not a 404 log line and a silent no-op.

**Completion — 2026-06-01:**

Resolver now supports two modes selected by params:
- single-repo: `params: {repo_slug: foo}` → `GET /sbom/{foo}`
- bulk: `params: {repos: all}` → `GET /repos/`, computes per-repo age,
  returns the worst-repo fields hoisted to the top of the result alongside
  `stale_count`, `total_count`, `worst_*` fields, and the full per-repo list

Never-scanned repos use a `99999` sentinel age so threshold rules treat them
as very stale without forcing the rule expression to special-case `None`.

`activity-definitions/weekly-sbom-staleness.md` kept its existing rule
expression `context.repos.sbom_age_days > 30` (the resolver hoists the worst
repo's age to that path). The definition now documents that the rule fires
at most once per workflow run, not once per stale repo, and that the
aspirational per-stale-repo fan-out exercised by the integration tests is
not delivered by the current workflow.

Live validation against the running State Hub on 2026-06-01:
- single: `activity-core` → 36 days since SBOM ingest at 2026-04-26
- bulk: 48 repos total, 46 stale (>30d); worst is `info-tech-canon`
  (`last_sbom_at: null` → 99999d sentinel); rule expression evaluates True

Tests: `uv run pytest -q` → 120 passed, 1 skipped (previously 116 passed +
4 broken integration tests; broken-on-my-change reverted by hoisting the
worst-repo fields to the top of `context.repos`).

### T02 - Rule action context interpolation and per-iteration binding

```task
id: ADHOC-2026-06-01-T02
status: todo
priority: low
state_hub_task_id: "6b3a185e-cbea-454c-82fb-8b4c16cefef0"
```

Discovered while completing T01: `RunActivityWorkflow` builds each
`TaskSpec` by lifting raw YAML fields out of the rule action without ever
interpolating `context.*` references:

```python
# src/activity_core/workflows.py
task_spec_dicts.append({
    "title": action.get("task_template", rule.get("id", "")),
    "target_repo": action.get("target_repo"),
    ...
})
```

So `target_repo: context.repos.repo_slug` in an ActivityDefinition rule is
emitted to the spawn log as the literal string `"context.repos.repo_slug"`,
not the actual stale repo slug. The aspirational per-stale-repo fan-out
exercised by `test_pipeline_emits_one_task_for_stale_repo_only` and friends
in `tests/test_integration_event_bridge.py` is *not* delivered by the
workflow — those tests simulate a per-repo iteration the real workflow
does not perform.

Two pieces of work, likely related:

1. **Action field interpolation.** Define and implement a safe template
   grammar for `action.target_repo`, `action.task_template`,
   `action.priority`, `action.labels`, etc. Reuse the rule-condition AST
   walker (no `exec`, no comprehensions) or a constrained string
   `{context.foo.bar}` substitution. Decide on grammar — instruction
   prompt rendering uses `{...}` placeholders today
   (`rules/executor.py::_render_prompt`); consistent with that is probably
   right.

2. **Per-iteration context binding.** Decide whether the workflow should
   evaluate a rule once per element of a list-valued context field (the
   integration-test contract), or whether the spawn-once semantics is
   actually desired and the tests should be relaxed. If iteration is the
   answer, the resolver shape from T01 already gives a clean `repos` list
   to iterate over; the workflow would need an explicit `for_each:`
   directive on the rule, or implicit iteration when `condition` references
   a list element.

This is borderline workplan-grade work (design decision + security review of
the interpolation grammar + workflow change + test updates). Promote to a
full workplan if anyone decides to actually do it; the adhoc T02 is just to
make sure the gap doesn't get forgotten.

Done when either: (a) rule action fields interpolate `context.*`
expressions and a stale-repo workflow run emits a TaskSpec with the actual
repo slug, or (b) a recorded decision explicitly defers/declines the change
with reasoning.