0ab3e359ce
Fleet-level record of legacy interfaces retired under the State Hub retirement program. Kept here rather than in state-hub because state-hub is being archived -- once it is read-only its legacy-meter tables stop being queryable in practice, and this needs to outlive that. Records the 15 workstream->workplan aliases retired on 2026-08-20 under STATE-WP-0079-T05 slice E2, the one retired earlier, and the 4 still held with the reason each is held. Documents the retirement standard including the volume-scaled quiet ladder and why it exists. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
94 lines
5.4 KiB
Markdown
94 lines
5.4 KiB
Markdown
# Retired legacy interfaces — journal
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**Scope:** fleet-wide record of legacy interfaces retired under the State Hub
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retirement program.
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**Maintained here, not in `state-hub`,** because `state-hub` is being archived
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and this record must outlive it. Once the hub is read-only its legacy-meter
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tables stop being queryable in practice; this file is the durable reference.
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**Source of record while the hub is live:** `state-hub` legacy-meter
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(`/legacy-meter/interfaces`), evidence captures in
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`state-hub/docs/evidence/legacy-meter-weekly-review-*.json`.
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**Programme:** `STATE-WP-0069` (terminology retirement), `STATE-WP-0079-T05`
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(retire legacy surfaces), slice E2 in
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`state-hub/docs/retirement-cutover-slice-plan.md`.
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## Retirement standard
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An interface is retired only when all of the following hold:
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1. A replacement exists (`replacement_ref`) and is marked verified.
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2. No manual hold.
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3. Zero calls in a **7-day** review window.
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4. Silence since `last_seen_at` of at least a **volume-scaled quiet period** —
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7 days under 100 all-time calls, 30 days under 10 000, 60 days above.
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Rule 4 exists because a clean window only proves silence *for that window*. A
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heavily-used interface can have an infrequent caller that falls outside it. This
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was not hypothetical: before the rule was added, captures ran over an 8-hour
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band rather than a week, and interfaces with live callers were reported as
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retirement candidates.
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Implementation: `RETIREMENT_QUIET_LADDER` in
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`state-hub/api/services/legacy_meter.py`.
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## Retired 2026-08-20 — workstream→workplan terminology aliases (15)
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Slice E2, `STATE-WP-0079-T05`. All replaced by the `workplan` spelling of the
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same surface.
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| Interface | Kind | Replacement | Legacy since | Retired | All-time calls | Last seen |
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| --- | --- | --- | --- | --- | --- | --- |
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| `mcp:create_workstream` | mcp_tool | `create_workplan` | 2026-07-10 | 2026-08-20 | 2 | 2026-07-10 |
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| `mcp:list_workstreams` | mcp_tool | `list_workplans` | 2026-07-10 | 2026-08-20 | 2 | 2026-07-10 |
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| `mcp:update_workstream` | mcp_tool | `update_workplan` | 2026-07-10 | 2026-08-20 | 0 | — |
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| `mcp:update_workstream_status` | mcp_tool | `update_workplan_status` | 2026-07-10 | 2026-08-20 | 0 | — |
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| `state://workstreams/{topic_slug}` | mcp_tool | `state://workplans/{topic_slug}` | 2026-07-10 | 2026-08-20 | 1 | 2026-07-10 |
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| `rest_api:DELETE /workstreams/{workstream_id}` | rest_api | `/workplans/{workplan_id}` | 2026-06-06 | 2026-08-20 | 1 | 2026-06-06 |
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| `rest_api:GET /decisions/?workstream_id` | rest_api | `/decisions/?workplan_id=<workplan_id>` | 2026-07-09 | 2026-08-20 | 1 | 2026-07-09 |
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| `rest_api:GET /progress/?workstream_id` | rest_api | `/progress/?workplan_id=<workplan_id>` | 2026-07-13 | 2026-08-20 | 2 | 2026-08-12 |
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| `rest_api:GET /workstreams/workplan-index` | rest_api | `/workplans/index` | 2026-06-04 | 2026-08-20 | 30 | 2026-07-03 |
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| `rest_api:PATCH /workstreams/{workstream_id}` | rest_api | `/workplans/{workplan_id}` | 2026-06-04 | 2026-08-20 | 571 | 2026-07-08 |
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| `rest_api:POST /decisions/ workstream_id` | rest_api | `POST /decisions/ with workplan_id` | 2026-07-09 | 2026-08-20 | 3 | 2026-07-09 |
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| `rest_api:POST /progress/ workstream_id` | rest_api | `POST /progress/ with workplan_id` | 2026-07-08 | 2026-08-20 | 14 | 2026-07-10 |
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| `rest_api:POST /tasks/ workstream_id` | rest_api | `POST /tasks/ with workplan_id` | 2026-07-08 | 2026-08-20 | 5 | 2026-07-08 |
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| `rest_api:POST /workstreams/` | rest_api | `/workplans/` | 2026-06-04 | 2026-08-20 | 824 | 2026-07-08 |
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| `rest_api:POST /workstreams/{workstream_id}/dependencies/` | rest_api | `/workplans/{workplan_id}/dependencies/` | 2026-06-04 | 2026-08-20 | 4,971 | 2026-07-01 |
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## Retired earlier (1)
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| Interface | Kind | Replacement | Legacy since | Retired | All-time calls | Last seen |
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| --- | --- | --- | --- | --- | --- | --- |
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| `event_subject:org.statehub.workstream.completed` | event_subject | `org.statehub.workplan.completed` | 2026-06-04 | 2026-07-08 | 255 | 2026-07-08 |
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## Still legacy — held, not retired (4)
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These carry the `workstream` spelling but did **not** meet the standard on
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2026-08-20. They are the three six-figure read paths plus one with live traffic
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— the set where a premature retirement would do the most damage.
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| Interface | Replacement | All-time calls | Last seen | Held because |
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| --- | --- | --- | --- | --- |
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| `rest_api:GET /workstreams/{workstream_id}` | `/workplans/{workplan_id}` | 511,406 | 2026-07-31 | quiet 19d of 60d required for 511406 all-time call(s) |
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| `rest_api:GET /workstreams/{workstream_id}/dependencies/` | `/workplans/{workplan_id}/dependencies/` | 255,865 | 2026-07-08 | quiet 42d of 60d required for 255865 all-time call(s) |
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| `rest_api:GET /workstreams/` | `/workplans/` | 144,086 | 2026-08-10 | quiet 9d of 60d required for 144086 all-time call(s) |
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| `rest_api:GET /tasks/?workstream_id` | `/tasks/?workplan_id=<workplan_id>` | 595 | 2026-08-19 | 5 call(s) in review window |
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The quiet counters run on their own. Re-capture before deciding — the ladder is
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evaluated at review time, so an old capture is not evidence for a later
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retirement.
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## Updating this journal
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After each retirement round in `state-hub`:
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```bash
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cd ~/state-hub
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uv run python scripts/capture_legacy_meter_evidence.py --retire-keys ""
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```
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Then append a dated section here with the same columns. Keep retired rows
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forever — the point of the journal is that a reader in 2027 can tell what
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`GET /workstreams/` was, what replaced it, and on what evidence it was removed.
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*Last updated: 2026-08-20*
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