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feat(group-quota): per-group shared-collection quotas (M3)

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Global env-var ceilings enforced in the group write path (mirrors the
per-value caps): PICLOUD_GROUP_KV_MAX_ROWS / _DOCS_MAX_ROWS (per-group row
count, checked only on a NEW key/doc — updates exempt) and
_FILES_MAX_TOTAL_BYTES (per-group total blob bytes). New group_quota env
helpers; count_rows/total_bytes repo methods (trait-default 0 for non-Postgres);
QuotaExceeded error variants on the three group error enums; a with_max_rows
test builder. Pinned by a group_kv_service unit test (3rd key rejected, update
of an existing key at the cap allowed).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
MechaCat02
2026-07-01 21:17:12 +02:00
parent 9a4b83dfcf
commit 2bc3fb677b
12 changed files with 213 additions and 5 deletions
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@@ -132,6 +132,9 @@ Environment variables consumed by the `picloud` binary:
| `PICLOUD_DOCS_MAX_VALUE_BYTES` | `262144` (256 KB) | Per-document JSON-encoded data cap for `docs::create`/`update`. |
| `PICLOUD_PUBSUB_MAX_MESSAGE_BYTES` | `262144` (256 KB) | Per-message JSON-encoded payload cap for `pubsub::publish_durable`. Prevents one publish from amplifying into N outbox rows × M MB. |
| `PICLOUD_QUEUE_MAX_PAYLOAD_BYTES` | `262144` (256 KB) | Per-message JSON-encoded payload cap for `queue::enqueue`. |
| `PICLOUD_GROUP_KV_MAX_ROWS` | `100000` | §11.6 M3 per-group quota: max total keys across a group's shared-KV collections. Checked only on a NEW key (`kv::shared_collection().set`); an update is exempt. |
| `PICLOUD_GROUP_DOCS_MAX_ROWS` | `100000` | §11.6 M3 per-group quota: max total docs across a group's shared-docs collections (`docs::shared_collection().create`). |
| `PICLOUD_GROUP_FILES_MAX_TOTAL_BYTES` | `10737418240` (10 GiB) | §11.6 M3 per-group quota: max total stored bytes across a group's shared-files collections (`files::shared_collection().create`). |
## Out of MVP