Remediate the MEDIUM backend correctness/perf findings from the 2026-07-11 audit.
B1 — a group cron template toggled disabled→enabled no longer re-fires every
descendant's cron. Materialization now KEEPS a disabled cron template's copies
(syncing `enabled` in place) instead of delete+recreate, preserving
`last_fired_at`; the scheduler already skips disabled copies, so keeping them is
inert. Queue/email arms still delete-on-disable (freeing the one-consumer slot).
B2 — `rematerialize_stateful_templates` warnings are now logged at the
app-create/delete and group-reparent chokepoints (were silently dropped); only
the `Err` arm was handled before.
B3 — the group KV/docs byte-quota check skips the O(rows) `SUM(octet_length(..))`
scan when a cheap upper bound (`rows_after * max_value_bytes`) is already under
the cap, so the full aggregate only runs near-cap. Every row is validated
≤ max_value_bytes, so the bound is sound (never lets an over-quota write through).
B6 — the in-process SSE broadcaster caps live channels per map
(`PICLOUD_REALTIME_MAX_CHANNELS`, default 100k); a subscribe that would open a
NEW channel past the cap is refused with 503 + `Retry-After: 1` rather than
growing the (app,topic)/(group,topic) maps unboundedly. Check+insert is atomic
under the map mutex (no TOCTOU); an existing-channel subscribe is exempt.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Four cleanups from the code review of the §7 ownership track, no behavior
change to any passing test (416 manager-core units + 133 CLI journeys green):
- #3 app-ownership read parity: `check_app_owner_single` now resolves the
nearest-claimed ancestor WITHIN the apply tx (`nearest_claimed_in_tx`, the
same mechanism the tree path uses) instead of on a separate pool connection,
so the check and this apply's writes see one consistent snapshot. (Fully
serializing against a concurrent claim on an out-of-tree ancestor stays part
of the documented pool→tx follow-up.)
- #4 blast-radius N+1 → one query: `group_blast_radius` replaced the
per-descendant-group `ancestors()` round-trips with a single recursive
`subtree → app_chain → nearest` CTE that groups + counts server-side. Cost is
now one query regardless of subtree size.
- #5 one ownership policy, two projections: `decide_group_claim` /
`decide_app_owner` are generic over the identity key, and `preview_ownership`
(plan side) now DERIVES its label from them (keyed on slugs, takeover-agnostic)
rather than re-encoding the arms — plan and apply can no longer drift.
- #6 shared slug validator: `validate_project_slug` delegates to a new
`groups_api::validate_slug_format`, which `groups_api::validate_slug` also now
uses — the format rule lives once. Projects intentionally skip the
reserved-word check (a project slug is never routed).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Makes §7 ownership usable end to end from the CLI.
- manifest: a `[project]` block (slug + optional name), independent of the
[app]/[group] XOR; threaded onto every apply from the repo. --dir reads it
from the tree ROOT's picloud.toml (a [project] elsewhere is ignored with a
note).
- client: apply_node/apply_tree carry project + takeover; the 409 branch now
surfaces the server message verbatim (covers StateMoved AND OwnershipConflict,
both self-contained). New groups_list_with_owner captures the owner slug.
- pic apply --takeover flag; pic groups ls gains an `owner` column (the owning
project's slug, or — when unclaimed).
- server: /api/v1/admin/groups now returns each group flattened with its owner
slug (via list_with_owner) — the shared Group deserialize ignores the extra
field, so pic groups tree / the dashboard are unaffected.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
materialize::rematerialize_stateful_templates reconciles a group cron/queue
template into one app-owned copy per descendant (materialized_from = template),
via the all-apps app_chain CTE ⋈ group-owned stateful templates. A precise
create/delete diff preserves cron last_fired_at on unchanged copies; a queue
copy is skipped-with-warning when the app already fills that queue's consumer
slot (the one-consumer invariant). Called full-live at the route-rebuild
chokepoints: apply (single + tree), app create/delete (apps_api), group
reparent (groups_api) — AppsState/GroupsState gain a pool. Pinned by
tests/stateful_templates.rs (per-app copy, idempotent, new-app materializes,
reparent de-materializes).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The runtime half. Group route TEMPLATES now expand into every descendant
app's in-memory match slice, live, with no per-app materialization.
- `compile_effective_routes` consumes the `list_effective` expansion and
applies NEAREST-OWNER-WINS shadowing: for one app, identical binding
tuples (method+host+path) owned at multiple chain levels collapse to the
nearest (an app's own route shadows an ancestor-group template); a nearer
group beats a farther one. Non-identical bindings coexist and the
existing matcher precedence resolves each request. `compile_route` now
takes the effective app_id, so the matcher + dispatch are unchanged.
- `rebuild_route_table` is the single refresh chokepoint (list_effective →
compile_effective_routes → replace_all). Route CRUD, the apply reconcile,
and startup all route through it; the apply guards drop the "a group node
touches no routes" assumption (a group apply may now create templates).
- FULL-LIVE INVALIDATION: app create/delete (apps_api) and group reparent
(groups_api) rebuild the snapshot, so inherited routes take effect the
instant the tree changes — matching the live model of triggers/vars.
Best-effort, mirroring apply: a failed rebuild self-heals on the next
write or restart, never failing the committed mutation.
The isolation boundary is the chain expansion: a template lands only in the
slices of apps whose ancestor chain contains the owning group. Pinned by a
deterministic live-DB integration test (descendant inherits, sibling
subtree does not, app shadows by identical binding, non-identical coexists).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Server-side foundation for Phase-2 groups (no group-owned resources yet):
Shared types:
- GroupId, Group; App gains group_id; AppRole::{precedence,max} for
folding the highest effective role across the membership chain.
Repos:
- group_repo: tree CRUD with reparent (ancestor-walk cycle guard under a
coarse instance-wide structural advisory lock; slug frozen; bumps
structure_version) and delete=RESTRICT (refuses non-empty groups).
- group_members_repo: per-(user, group) role grants, mirroring app_members.
Hierarchy-aware authz (§5.3):
- AuthzRepo gains effective_app_role / effective_group_role (default to
direct membership / none, so the ~18 existing test stubs are untouched);
the Postgres impl resolves each via one depth-bounded recursive CTE that
MAXes the app's own row with every ancestor group_members row.
- can(): the Member path now folds inherited group roles, so a group_admin
on any ancestor is implicitly app_admin beneath it. New Capability
variants InstanceCreateGroup / Group{Read,Write,Admin}; group caps carry
no app_id (bound API keys can't manage groups). 8 new unit tests.
Admin API:
- groups_api: group CRUD + reparent (admin at both source and destination
parent, §5.6) + per-group members, all capability-gated.
- apps: POST /apps takes an optional parent group (default root); app
responses carry group_id; my_role now reflects the effective role.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
