---
id: REUSE-WP-0019
type: workplan
title: "Forgejo-native federation automation and reuse telemetry"
domain: infotech
repo: reuse-surface
status: finished
owner: claude-code
topic_slug: helix-forge
created: "2026-07-06"
updated: "2026-07-08"
state_hub_workstream_id: "569be717-34f8-4039-bb26-497685f60159"
reuse_check: "new — dogfooded 2026-07-07 via reuse-surface plan-check against the full 61-capability federated index; no existing capability covers Forgejo webhook automation or reuse telemetry"
---

# Forgejo-native federation automation and reuse telemetry

Federation compose is on-demand and the hub serves whatever was last composed;
roster sweeps are manual; reliability evidence is structural (CI exists) rather
than observed (someone reused it and it worked). This workplan makes the
registry **live** (event-driven recompose) and **evidence-backed** (reuse
telemetry feeding the R axis).

**Platform constraint:** the forge is transitioning **Gitea → Forgejo**. All
new automation attaches to Forgejo (webhooks, Forgejo Actions, API tokens) —
nothing new is built against Gitea. Existing raw URLs
(`https://gitea.coulomb.social/...`) and `.gitea/workflows/` must migrate or
be made host-agnostic. Forgejo is Gitea-API-compatible, so migration is mostly
host/path configuration, but every hardcoded `gitea.` reference is a liability.

**Depends on:** REUSE-WP-0017 (content worth refreshing), REUSE-WP-0018-T01
telemetry schema (shared). Closes SCOPE "not possible yet" item *automatic hub
refresh* and moves reliability evidence beyond structural.

## Design principles

1. **Host-agnostic first** — a single `forge_base_url` configuration
   (env/config + hub setting) replaces hardcoded hosts; the Forgejo cutover
   becomes a one-line change per surface.
2. **Webhook triggers, compose stays pull-based** — the webhook only marks the
   hub's composed index stale and triggers recompose from published raw URLs;
   no push-parsing of payloads into registry state.
3. **Degrade to schedule** — if webhooks are unavailable, a scheduled Forgejo
   Actions job recomposes on an interval; freshness is monitored either way.
4. **Telemetry is append-only and low-ceremony** — reuse events are JSONL
   facts (who consumed what, when, outcome); aggregation derives `reused_by`
   relations and R-axis evidence citations, never hand-edited.

## Dependencies

| Dependency | Owner | Notes |
|---|---|---|
| Forgejo instance + admin | Bernd / infra | webhook config, org-level token, Actions runners |
| Gitea→Forgejo cutover plan | infra | final hostname, raw URL scheme, redirect window |
| Hub deployment (reuse.coulomb.social) | reuse-surface / railiance | new endpoint + config rollout |
| REUSE-WP-0018-T01 | reuse-surface | shared telemetry/outcome schema |
| plan-check adoption | ecosystem | telemetry volume comes from WP-0018-T05 rollout |

---

## Forge Host Abstraction And URL Migration Inventory

```task
id: REUSE-WP-0019-T01
status: done
priority: high
state_hub_task_id: "4a187b56-bff9-4097-abd0-b423e7bf9442"
```

**Inventory findings (2026-07-07):** cross-referenced `sources.yaml` (61
entries) against each repo's actual git `origin` remote. Result: 11 repos
already migrated their remote to Forgejo; 50 still on Gitea (correctly, no
action needed). Of the 11 Forgejo-origin repos, 9 already had correct
`sources.yaml` entries (from WP-0017 drafting/registration); **2 were
stale** — `activity-core` and `state-hub` — still pointing at their old
Gitea raw URL despite having migrated. This was real, live debt, not a
hypothetical: both were confirmed reachable on Forgejo (HTTP 200) before
being migrated for real, in both `sources.yaml` and the production hub
registration (`hub update --url`). Verified post-migration against
`GET /v1/federated` — both now show `forgejo.coulomb.social`.

`config-atlas`'s WP-0017-T06 303 was **not** a host-transition symptom —
already diagnosed there as (a) a redirect the current code already follows
fine, and (b) a hub-registration gap unrelated to host. No new finding here.

Implemented:

- `reuse_surface/forge_host.py`: `parse_raw_url`/`derive_raw_url` (handles
  both the legacy `/raw/<branch>/...` form and the canonical
  `/raw/branch/<branch>/...` form both forges serve without a 303
  redirect), `rewrite_url_host`, `forge_base_url` (reads
  `REUSE_SURFACE_FORGE_BASE_URL`, no hard default since migration is
  opt-in per repo), `migrate_source_host` (verifies the new URL resolves
  via HTTP HEAD **before** writing — refuses to point a repo at a host it
  hasn't actually migrated to)
- CLI: `reuse-surface federation migrate-host --repo <slug> [--repo ...]
  --to <base-url> [--from <sanity-check>] [--dry-run] [--no-verify]
  [--update-hub]` — used for real on `activity-core`/`state-hub`
- Fixed two host-agnostic code gaps found while inventorying:
  `registry_update.py`'s `SAFE_EVIDENCE_PREFIXES` and `maintain_llm.py`'s
  git-diff pathspec only recognized `.gitea/workflows/`, missing repos
  already on `.forgejo/workflows/` — both now recognize either
- Fixed stale copy-paste examples in `docs/RegistryFederation.md`
  (state-hub's old Gitea URL, now genuinely wrong post-migration) and a
  pre-existing, unrelated port typo (`8088` vs the real llm-connect
  default `8080`) in `tools/README.md`/`registry/README.md`, discovered
  and confirmed live during REUSE-WP-0018-T03
- 17 new pytest cases (`tests/test_forge_host.py`); 106 total pass
- Recomposed `federated.yaml` post-migration: still 61 capabilities, no
  loss

## Hub Recompose Endpoint And Webhook Receiver

```task
id: REUSE-WP-0019-T02
status: done
priority: high
state_hub_task_id: "691eb32a-6f20-4a2a-b9ff-0ae427b659aa"
```

**Note:** `POST /v1/federated/compose` (token-auth, triggers a real
recompose) already existed from earlier hub work — no separate
`/v1/recompose` route was added; the spec now documents this explicitly
rather than duplicating a route that already does the job.

Implemented in `reuse_surface/hub/`:

- `store.py`: `compose_state` table (`composed_at`, `stale`), with
  `record_compose()`/`mark_stale()`/`get_compose_state()`. `composed_at`
  updates and `stale` clears only on a *forced* recompose (`refresh=true`,
  webhook, or future scheduled fallback) — a plain `GET` still serves
  current best-effort data but never silently reports itself as freshly
  composed
- `webhooks.py`: `verify_signature` (constant-time HMAC-SHA256, fails
  closed on empty secret), `push_touches_registry_index` (path-only
  inspection of the push payload's `added`/`modified`/`removed` lists —
  never parses file content, per design principle 2)
- `app.py`: `POST /v1/webhooks/forgejo` (accepts both `X-Forgejo-Signature`
  and `X-Gitea-Signature`, since repos migrate independently);
  `GET /v1/federated` and `POST /v1/federated/compose` now share an
  `asyncio.Lock` so concurrent recompose triggers (manual, webhook, future
  scheduled) coalesce instead of overlapping
- `specs/FederationHubAPI.md` extended (§5.7-5.9, config table, error
  codes)
- 28 new pytest cases (16 in `test_hub.py`, 12 in `test_webhooks.py`); 128
  total pass
- **Live-verified**: ran the actual hub service locally
  (`reuse-surface serve`), sent a real HMAC-signed webhook payload over
  HTTP — confirmed `composed_at`/`stale` transitions, signature rejection,
  irrelevant-path no-op, and the full webhook-to-recompose path end to end

**Deployed 2026-07-07 (explicit user sign-off "Deploy to live please"):**
built and pushed `gitea.coulomb.social/coulomb/reuse-surface:e3ae22e`,
smoke-tested it locally in a standalone container first, then
`helm upgrade` via `railiance-apps` (`make reuse-deploy`, pinned in
`helm/reuse-surface-values.yaml`, commits `a2c0da1`/`bcb05f5`). Live-verified
against `https://reuse.coulomb.social`: `/v1/federated` (200, 61
capabilities, `composed_at`/`stale` fields present), `/v1/repos` (200), a
real forced recompose via `POST /v1/federated/compose` (token-auth via
`warden access --exec`, token never printed), and the webhook endpoint
correctly failing closed with 503 (`REUSE_SURFACE_FORGEJO_WEBHOOK_SECRET`
not yet configured).

**Webhook secret added 2026-07-07 (explicit user sign-off "Go ahead and
add the webhook secret"):** generated a fresh 32-byte hex secret with
`openssl rand -hex 32`, patched it into the live K8s Secret
`reuse-surface-env` in namespace `reuse`, restarted the deployment (values
injected via `envFrom.secretRef`, not picked up without a restart) — pod
rolled cleanly (`1/1 Ready`, 0 restarts). The raw secret value was never
printed to the transcript: generated and applied in one non-echoing shell
step, and re-fetched only inside an exported env var for the live
signature-verification test below, then unset. Live-verified against
production: a correctly HMAC-signed push payload is now accepted
(`{"accepted": false, "reason": "no registry/indexes/ change"}` for a
payload that doesn't touch `registry/indexes/`, as designed), and a bad
signature is still rejected with 401. `/v1/federated` and `/v1/repos`
unaffected by the restart.

**Found (not fixed) while smoke-testing:** the public ingress's exact-path
`/health` rule 404s at the Traefik edge (shadowed by the catch-all `/`
rule to the landing page) — confirmed ingress-layer only, not a pod/service
problem (`/health` works via direct port-forward; the Deployment's own
readiness/liveness probes pass, pod is `1/1 Ready`). `/v1/*` unaffected.
Flagged to `railiance-apps` via State Hub message and documented in
`railiance-apps` commit `bcb05f5` — not fixed here since it's a shared
production ingress template edit outside this workplan's scope.

## Forgejo Webhook Rollout And Scheduled Fallback

```task
id: REUSE-WP-0019-T03
status: done
priority: medium
state_hub_task_id: "aa9e9f80-b878-490c-832e-515d8cbbbb60"
```

**Org-level Forgejo webhook — done by `railiance-apps` (2026-07-07),
credited not claimed:** after I flagged the `/health` ingress bug to
`railiance-apps` via State Hub message, they picked up this piece too:
`tools/reuse-forgejo-webhook.sh` + `make reuse-forgejo-webhook`
(idempotent, reads the same `REUSE_SURFACE_FORGEJO_WEBHOOK_SECRET` I put
in the K8s Secret directly from the live cluster, never prints it).
Verified live: `GET /api/v1/orgs/coulomb/hooks` shows hook id `1`, active,
`push` events only, pointed at `https://reuse.coulomb.social/v1/webhooks/forgejo`.

**Migrated this repo's own CI, following the existing tier-3 playbook
(`the-custodian/docs/forgejo-repo-migration-pilot-glas-harness.md`,
`railiance-enablement/docs/forgejo-actions-workflow-templates.md` — used
proven patterns rather than improvising):**

- Created `coulomb/reuse-surface` on Forgejo (`private: false`, matching
  every other migrated repo including `state-hub`/`activity-core` —
  confirmed via API before asking, then got explicit user sign-off on the
  visibility choice specifically, since the auto-mode classifier correctly
  flagged "public" as an inferred parameter beyond the general migrate
  instruction)
- `.forgejo/workflows/ci.yml`: ported `.gitea/workflows/ci.yml` verbatim
  in behavior, but using archive checkout (`wget`+`tar` + `apt install
  python3`) instead of `actions/checkout@v4` — this runner's
  `ubuntu-latest` label maps to `docker://node:20-bookworm` with no Python
  preinstalled and no proven checkout-action support on this substrate
- `.forgejo/workflows/ci-smoke.yaml`: routing probe, copied from the
  canonical template (matches sibling convention)
- `.forgejo/workflows/image.yaml`: container build/push to
  `forgejo.coulomb.social/coulomb/reuse-surface` (canonical single-repo
  template, org secrets `REGISTRY_USER`/`REGISTRY_TOKEN` already existed)
- `.forgejo/workflows/recompose-fallback.yaml`: scheduled (every 6h) `POST
  /v1/federated/compose` as a backstop per design principle 3 ("degrade to
  schedule") — the webhook above is the primary path; no separate
  `/v1/recompose` route exists (see T02 note)
- Removed `.gitea/workflows/ci.yml` (dead once `origin` moves; matches how
  `state-hub`/`activity-core`/etc. left no `.gitea/workflows/` behind)
- `origin` → `forgejo-remote:coulomb/reuse-surface.git`, old remote
  renamed to `gitea` (kept, read-only, frozen at commit `ac81490` — safety
  contract from the migration playbook: never delete the Gitea copy)
- **Live-verified all three workflows green** on the actual push: `ci.yml`
  (`validate-registry`, real pytest+validate suite) success; `ci-smoke.yaml`
  (`host-smoke` + `container-smoke`) success; `image.yaml`
  (`build-and-push`) success — confirmed `reuse-surface:latest` and
  `reuse-surface:main-09d5b0f` both landed in the Forgejo container
  registry via the packages API

**`REUSE_SURFACE_TOKEN` repo secret added 2026-07-07 (explicit user
sign-off "Go ahead and add the repo secret"):** fetched the token via
`warden access reuse-surface-hub-write-token --exec` (never printed) and
`PUT` it to Forgejo's repo Actions secrets API (`201`). Live-verified by
manually dispatching `recompose-fallback.yaml`
(`POST .../actions/workflows/recompose-fallback.yaml/dispatches`) — run
completed `success`, and `GET /v1/federated` on the live hub showed
`composed_at` advance to the exact dispatch time, confirming the full
scheduled-fallback path works end to end, not just that the workflow
didn't error.

T03 is now fully complete: org webhook live (railiance-apps), this repo's
CI on Forgejo Actions (all three workflows verified green), and the
scheduled fallback verified working end to end.

**Not done — moved out of this workplan's scope:** updating
`docs/deploy/reuse-kubernetes.md`/`railiance-apps` to make
`forgejo.coulomb.social` the canonical *production deploy* image registry
(vs. the current live pod, which still runs the `gitea.coulomb.social`
image built in T02 and is working fine). Didn't force another production
redeploy in this same pass; the Forgejo image pipeline is proven and ready
whenever a future deploy wants to switch registries.

## Reuse Telemetry Store And Recording

```task
id: REUSE-WP-0019-T04
status: done
priority: medium
state_hub_task_id: "c8e9064e-5c39-4c84-80e9-8b255f8edaec"
```

The shared schema (`schemas/reuse-event.schema.json`) already existed from
WP-0018-T01 drafting — this task implemented the hub side and wired
`plan-check`/manual recording against it, rather than designing it fresh.

Implemented:

- `reuse_surface/hub/store.py`: `reuse_events` SQLite table (append-only),
  `record_reuse_event()` (schema-validated, raises `ValueError` on a bad
  shape rather than silently accepting drift), `list_reuse_events(capability_id=None)`
- `reuse_surface/hub/app.py`: `POST /v1/reuse-events` (token-auth, 201/400),
  `GET /v1/reuse-events?capability_id=` (no auth, read-only, same posture
  as `GET /v1/federated`)
- `reuse_surface/hub_client.py`: `hub_record_reuse_event`/`hub_list_reuse_events`
- `reuse_surface/plan_check.py`: refactored `record_outcome` around a new
  shared `post_or_fallback_reuse_event()` — tries `POST /v1/reuse-events`
  first, falls back to the local JSONL only on failure/unreachability
  (never both, per the design: "+ local JSONL fallback when hub
  unreachable", not a dual-write). New `record_manual_reuse_event()` for
  retroactive facts, sharing the same post-or-fallback path
- New CLI command `reuse-surface record-reuse --consumer-repo --capability-id
  --verdict --outcome [--hub-url] [--format]`
- `plan-check --record-outcome`'s help text and JSON output updated
  (`recorded_reuse_event` field); `schemas/plan-check-result.schema.json`
  extended for the new field
- Privacy/scope enforced structurally: the schema's `additionalProperties: false`
  means a caller literally cannot attach code or secrets to an event, only
  the declared fields (repo slug, capability id, verdict, outcome, source)
- 21 new pytest cases (hub store/API, plan_check dual-path, CLI); 145 total pass
- **Live-verified** against a real locally-running hub instance: `POST`/`GET
  /v1/reuse-events` directly, `record-reuse` CLI posting to the hub,
  `plan-check --record-outcome` posting to the hub, and — after actually
  killing the hub process — confirmed the fallback path writes correctly
  to the local JSONL instead of erroring

## Telemetry Aggregation Into R-Axis Evidence

```task
id: REUSE-WP-0019-T05
status: done
priority: medium
state_hub_task_id: "f0282cfa-0a71-4b46-a558-80b51ef04fa7"
```

"Blocked on T04 plus initial event volume" — T04 is done, and the
*tooling* doesn't actually need to wait for real ecosystem adoption volume
to be built and tested correctly (an empty/near-empty dataset is itself a
valid, tested case: `report reuse` prints "No reuse events recorded yet"
rather than erroring). Real cross-repo adoption volume ramping up is an
ecosystem-timing question, not a coding blocker — implemented now so the
tooling is ready the moment volume exists.

Implemented:

- `reuse_surface/reports.py`: `collect_reuse_events()` (merges the hub's
  `GET /v1/reuse-events`, if reachable, with this repo's local JSONL
  fallback, deduped by `(ts, consumer_repo, capability_id, source)`),
  `collect_reuse_report()` (per-capability consumer counts, outcome
  breakdown, last-used), `format_reuse_report_markdown/json`
- `collect_reused_by_suggestions()`: evidence-gated `relation_add`
  suggestions — only for capabilities this repo actually owns (checked
  against the local index, not invented), only for consumer repos not
  already listed. Reuses the *existing* `patches.py:apply_patches`
  mechanism (which already handled `relation_add`, not in
  `SAFE_DETERMINISTIC_KINDS`, so never auto-applied by `maintain --auto`)
  rather than building a new apply path
- New CLI: `reuse-surface report reuse [--capability-id] [--format]
  [--suggest-relations] [--apply]` — `--apply` requires
  `--suggest-relations` and is the only thing that writes; nothing happens
  automatically from telemetry alone
- Schema: added `relations.reused_by` to `schemas/capability.schema.yaml`
  (a new `repoSlugList` `$defs` type — distinct from the existing
  `capabilityIdList` relations, since reused-by targets are consumer repo
  slugs, not capability ids)
- `specs/CapabilityMaturityStandard.md` §8.9 amended: what observed-reuse
  evidence counts toward R2→R3 (single corroborating consumer) vs R3→R4+
  (multiple *independent* consumers, `report reuse`'s `consumer_count`),
  and explicitly what it never substitutes for (bug reports, incidents,
  explicit `promotion_history` citations — `maturity_promote` stays
  LLM-suggested and review-gated)
- 19 new pytest cases (`test_reports.py`); 162 total pass
- **Live-verified** with synthetic local-JSONL events against a real
  capability entry: `report reuse --suggest-relations --apply` correctly
  wrote `relations.reused_by` into the entry's front matter via the real
  `apply_patches` path (confirmed via `git diff`, then reverted since it
  was a smoke test, not a real fact)

**Deliberately deferred, not silently dropped:** "Catalog + graph surface
consumer counts." `graph.py`'s `RELATION_TYPES` graph is capability-to-
capability edges; `reused_by` targets are repo slugs, a different
namespace entirely — forcing it into that edge model would either error or
produce meaningless nodes. `catalog.py` doesn't currently parse full entry
front matter per capability at all (works off the index). Surfacing
consumer counts in either artifact is a real, separate rendering-layer
task, not a natural extension of what T05 already built — left for a
follow-up rather than rushed in.

## Freshness Monitoring, Docs, SCOPE

```task
id: REUSE-WP-0019-T06
status: done
priority: low
state_hub_task_id: "a9f44d45-91e2-4b43-909f-30a5f906cf3b"
```

SCOPE.md's "automatic hub refresh" flip was already done incidentally in
T02/T03 (moved from "not possible yet" to "possible now"); no further
change needed there.

Implemented:

- `reuse_surface/hub_client.py`: new `hub_federated()` (`GET /v1/federated`)
- `reuse_surface/stats.py`: `_hub_summary()` now also reports
  `composed_at`, `stale`, `age_days` (computed from `composed_at`),
  `freshness_threshold_days` (`REUSE_SURFACE_FRESHNESS_DAYS` env, default
  7), and a computed `stale_warning` (age beyond threshold OR the hub's own
  `stale` flag). `format_stats_markdown` surfaces these with a `⚠ STALE`
  marker when triggered; `format_stats_json` picks them up automatically
  (no format-specific code needed there)
- `.forgejo/workflows/ci.yml`: new informational (non-failing) "Hub
  freshness check" step against the live production hub — prints a
  `::warning::` annotation when stale, never fails the build
- `docs/RegistryFederation.md`: new "Automatic recompose and freshness"
  section tying together the webhook (T02/T03), scheduled fallback (T03),
  and freshness visibility (T06) into one coherent explanation, pointing
  at the authoritative operator runbook (`railiance-apps`) for actual
  secret/webhook setup rather than duplicating operational steps here
- `docs/deploy/reuse-kubernetes.md`: image section updated to reflect the
  T03 Forgejo migration (repo canonical remote moved; production image
  still built from the pre-migration Gitea registry, deliberately not
  switched over in this task); image promotion checklist updated for the
  now-automated `.forgejo/workflows/image.yaml` build and the known
  `/health` ingress bug (use `/v1/repos`/`/v1/federated` for verification
  instead)
- 14 new pytest cases (`test_stats.py`); 173 total pass
- **Live-verified** against the real production hub: `reuse-surface stats`
  correctly showed `composed_at`/`age_days` for the actual federated index
  (0.08 days old, no stale warning); separately discovered and confirmed
  (via a live signed webhook test) that an external secrets-management
  change — `reuse-surface-env` is now ExternalSecret-managed from OpenBao
  (`railiance-apps` commit `706f6c7`, found while updating these same
  docs) — did **not** break the T02/T03 webhook: the synced value still
  matches what the hub actually uses

---

## Acceptance

- [x] No hardcoded forge host in code or sources.yaml; `migrate-host` tested (T01, 2026-07-07)
- [x] Push to a sibling repo's `registry/indexes/` recomposes the hub index without manual action (webhook), with scheduled fallback in place (T02/T03, 2026-07-07 — both live-verified end to end)
- [x] This repo's CI runs on Forgejo Actions (`.forgejo/workflows/`) (T03, 2026-07-07 — `ci.yml`/`ci-smoke.yaml`/`image.yaml` all verified green on the live push)
- [x] Reuse events recordable via hub API and CLI (T04, 2026-07-08 — live-verified); `report reuse` aggregation done in T05
- [x] R-axis evidence rules for observed reuse documented in the maturity standard (T05, 2026-07-08 — `specs/CapabilityMaturityStandard.md` §8.9)
- [x] Hub freshness visible (`composed_at`, stale flag) in API and stats (T02 API, T06 `stats`/CI, 2026-07-07/08)

## Out of scope

- Operating the Forgejo instance or the Gitea→Forgejo data migration itself
- Multi-replica/Postgres hub posture (separate managed-platform track)
- Blocking CI gates on registry freshness in sibling repos
- ActivityPub/Forgejo-native federation features (our federation layer stays raw-URL based)