docs(tasks): decompose wave 7 — the ops surface, the alkcall-backed op family behind the default-off feature

tasks/ops-call-harness.md

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+---
+id: ops-call-harness
+name: the in-process alkcall harness — the serving assembly and the client side over one duplex pair
+status: pending
+depends_on: [ops-foundation]
+scope: narrow
+risk: low
+impact: component
+level: implementation
+tags: [wave-7, ops, testing, harness, alkcall]
+---
+
+## Description
+
+The test harness every ops handler task exercises its handlers
+through: an in-process alkcall **serving side + client side over one
+`tokio::io::duplex` pair** — the embedder's "dials and hands an
+established `Connection` in" shape (ops-surface.md §Why alkcall;
+alkcall is a pure protocol crate), realized in-process so the ops
+surface is testable server-less.
+
+- **The serving assembly** (the embedder-assembly pattern realized in
+  test): `OperationRegistryBuilder` receiving the ops family's
+  spec/handler pairs → the dispatch serving stack (`CallAdapter` /
+  `GatewayDispatch`, plus `ChannelsAdapter` for the binary ops'
+  `channel_open` path) → the dispatch run loop over a
+  `Connection::from_bidi` half (alkcall ADR-009's public stream
+  constructor). The assembly's shape is the module's documented
+  embedder entry — the "module exports spec/handler pairs; the
+  embedder assembles" placement (ops-surface.md's placement note,
+  the alkgit `git/repo/*` pattern).
+- **The client side**: `CallClient` + `spawn_dispatch` over the
+  duplex pair's other half; `ChannelClient` (`from_connection`,
+  `open_channel`/`call_open_op`) for the channel ops.
+- **The identity/ACL wiring**: a test `IdentityProvider` +
+  `OwnershipProvider` — the embedder-registry stand-in (namespace →
+  identities → granted actions) — so ACL behavior is exercisable from
+  the first handler task onward, including the closed-by-default
+  denial path (OQ-09).
+- **Proven with a stub op**: a trivial stub op registered through the
+  same path round-trips (call → response envelope), and the channel
+  path opens with bytes flowing — the pipe proven before any real op
+  rides it. The stub lives in the test tree; it registers nothing
+  into the shipped module surface.
+
+## Acceptance Criteria
+
+- [ ] The harness lives in the ops module's test tree
+      (`#[cfg(test)]` under feature `ops`), parameterized over the
+      assembled registry (ops register; the harness serves)
+- [ ] Server + client halves over one duplex pair; the dispatch run
+      loop serves; the client calls and receives envelopes
+- [ ] The identity/ownership wiring exercisable: a stub op carrying
+      an `AccessControl` denies an ungranted identity and admits a
+      granted one (the ACL path proven end-to-end pre-handler)
+- [ ] The channel path proven: a stub `channel_open` op establishes
+      (the `Establishment` phase) and bytes flow both directions
+- [ ] `cargo test --features ops` green; the default build unaffected
+      (the harness is feature-gated test code);
+      `cargo clippy --all-targets -- -D warnings` and
+      `cargo fmt --check` green on both shapes
+
+## References
+
+- docs/architecture/ops-surface.md (§Why alkcall — the Connection
+  hand-in; the placement note)
+- docs/architecture/decisions/001-substrate-posture-and-ops-placement.md
+  §2 (the machinery inventory this harness assembles)
+- alkcall (upstream checkout `/workspace/@alkdev/alkcall`):
+  `src/registry/registration.rs` (`OperationRegistryBuilder`, the
+  handler kinds), `src/protocol/adapter.rs` (`CallAdapter`),
+  `src/protocol/connection.rs` (`Connection::from_bidi`), 
+  `src/channels/adapter.rs` (`ChannelsAdapter`),
+  `src/channels/client.rs` (`ChannelClient`), ADR-047/049 (the
+  channel_open marker + establishment)
+- tasks/ops-foundation.md (the context the harness's assembled
+  handlers capture)
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion

tasks/ops-e2e-flows.md

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+---
+id: ops-e2e-flows
+name: the ops wire-level lifecycle proofs — have/need diffing, the token lifecycle, and the ACL matrix end-to-end
+status: pending
+depends_on: [ops-json-ops, ops-fetch, ops-put]
+scope: broad
+risk: medium
+impact: phase
+level: implementation
+tags: [wave-7, ops, e2e, tokens, acl, fleet]
+---
+
+## Description
+
+The capstone proofs through the harness (`ops-call-harness`) — the
+full lifecycle flows the individual handler tests exercise only in
+pieces. This is wave 7's equivalent of the engine waves' suite
+columns: the surface proven as a whole, on the wire.
+
+- **The have/need flow**: a consumer diffs `blobs/have` over its
+  digest set → fetches the absent digests (the need announcement *is*
+  the fetch miss — the diff is caller-side; the wire carries only
+  concrete fetch requests). Proven end-to-end: seed a store via the
+  facade, diff from the client side, fetch exactly the absent set,
+  re-diff to all-present.
+- **The fleet token lifecycle end-to-end** (against the harness
+  server — env-driven, skipping cleanly server-less; the
+  pglo-poc convention): put → token → renew via have's renewal form
+  before expiry (`present: true`; the row's expiry observed moving) →
+  the embedder's registration confirms → the row's protection hands
+  to the registered liveness source (the namespace binding's
+  converter) → the row expires naturally and the entry survives on
+  the registered source's protection. Then the failure half: pause
+  past TTL → the renewal probe answers `present: false` → the
+  sweeper reaps the row → the **re-put backstop** (delete-then-
+  recover; CAS makes the re-put idempotent) → **the race resolves to
+  a re-put, never to silent loss** (ADR-010 §4's expiry semantics
+  verbatim, on the wire).
+- **The foreign-token refusal**: a token minted by node A presented
+  to node B (a second fleet instance's ops module over the same
+  pool) → `present: false`, not an error — the validity domain is
+  the minting node (ADR-012 §2).
+- **The non-fleet token lifecycle**: put → token (the registry holds
+  the guard) → have-present answers from the custody → the embedder's
+  registration confirms → the guard converts (the namespace
+  binding's converter) → the token retires. Proven on a non-fleet
+  store (sqlite or mem — server-less).
+- **The ACL matrix end-to-end**: an unlisted namespace denies read
+  AND write (closed-by-default — OQ-09); a read-granted identity
+  fetches/stats/haves but cannot put; a write-granted identity puts
+  but a read-only peer cannot fetch its namespace; delete only under
+  the internal authority context (never a namespace grant).
+- **The re-routing posture's serving half** (ADR-008 §3): a large
+  (pg-lo) entry served through `blobs/fetch` from the storage node's
+  dual-tier fleet store — the shape client nodes in kv-only mode
+  consume; no fleet-specific op exists (the module supports the shape
+  without change).
+- **The no-side-door audit** (structural, ADR-001 §4): the ops
+  module's store access enumerated — the public facade plus the
+  foundation's crate-internal renewal seam only; no `Backend` touch,
+  no engine types, no path around the facade. Recorded as the audit
+  the wave-7 review gate re-checks.
+- **The renewal-cadence boundary honored** (ADR-013 §1): the tests
+  drive renewal explicitly (the embedder's cadence role played by the
+  test); no in-crate renewal worker exists.
+
+## Acceptance Criteria
+
+- [ ] The have/need flow proven end-to-end (diff caller-side; the
+      wire carries only concrete fetches)
+- [ ] The fleet token lifecycle end-to-end vs the harness server:
+      renew-before-expiry (the row's expiry moves), the
+      registration-handover, pause-past-TTL → reap → the re-put
+      backstop — never silent loss (env-driven; skipping cleanly
+      server-less; acceptance requires green against the server)
+- [ ] The foreign-token refusal: `present: false`, not an error
+- [ ] The non-fleet lifecycle: custody → confirmation → conversion →
+      token retirement (server-less)
+- [ ] The ACL matrix end-to-end (closed-by-default read+write denial;
+      the read/write split; delete internal-only)
+- [ ] The re-routing posture's serving half: a large entry fetched
+      through the ops surface from the dual-tier fleet store
+- [ ] The no-side-door audit recorded (the store-access enumeration)
+- [ ] Gates green: `cargo test` (default), `cargo test --features
+      ops`, `cargo test --all-features` (the fleet rows live at
+      acceptance), clippy/fmt across the variants, `cargo doc
+      --no-deps` clean
+
+## References
+
+- docs/architecture/ops-surface.md (§Op family — the hand-over
+  contract; the need-half note; §Store-facing relationship — the
+  re-routing posture)
+- docs/architecture/decisions/010-backend-io-seams-and-fleet-state-home.md
+  §4 (the expiry semantics; the re-put backstop)
+- docs/architecture/decisions/012-pre-decomposition-consistency-rulings.md
+  §2 (the validity domain; the non-fleet generalization)
+- docs/architecture/decisions/008-trait-size-probe-fleet-gc-and-large-engines.md
+  §2/§3 (the TTL/3 cadence; the re-routing topology)
+- docs/architecture/decisions/013-family-composition-reactive-boundary-and-feature-graph.md
+  §1 (the cadence is embedder composition)
+- docs/architecture/open-questions.md OQ-09 (closed-by-default)
+- tasks/ops-foundation.md, tasks/ops-call-harness.md,
+  tasks/ops-json-ops.md, tasks/ops-fetch.md, tasks/ops-put.md (the
+  surface this proves as a whole)
+- tasks/suite-column-fleet.md (the env-driven harness-server
+  convention this task's fleet rows follow)
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion

tasks/ops-fetch.md

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+---
+id: ops-fetch
+name: blobs/fetch — the verified Sub op and the fanout seam's consumer side
+status: pending
+depends_on: [ops-foundation, ops-call-harness]
+scope: moderate
+risk: medium
+impact: component
+level: implementation
+tags: [wave-7, ops, fetch, fanout, verification]
+---
+
+## Description
+
+`blobs/fetch` (ops-surface.md §Op family) — the server→client
+streaming op: `{namespace, digest, ranges?}` in; **verified bytes
+out** over the binary data channel.
+
+- **The op shape**: `OperationType::Sub` (alkcall ADR-021's streaming
+  handler kind) with the **`channel_open` marker** (alkcall ADR-047)
+  — the binary data plane rides a `channel_open`-allocated channel;
+  the establishment phase (alkcall ADR-049) carries the fetch's ack
+  shape in the `Establishment` reply fields as the wire requires. The
+  **read** action (ACL exactly like stat/have — closed-by-default).
+- **Verified streaming** (ADR-006; ops-surface.md): the *consumer*
+  hash-checks the received whole against the carried digest —
+  whole-blob verification; there are no per-chunk or per-range checks
+  derivable under the canonical digest. The handler streams from the
+  facade only: `Store::get` (the whole) or `Store::read_range` (the
+  ranged form). **Ranged fetch** (`ranges?`): the response carries
+  the same ADR-006 slice-digest convention `read_range` returns —
+  SHA-256 over exactly the returned bytes, out-of-band.
+- **The fanout seam's consumer side** (ops-surface.md; POC #3 finding
+  A3): the fetch handler consults the foundation's fanout registry —
+  a live broadcast for the digest → a **subscriber arm** taps it; no
+  live broadcast, or one that ended (a **late joiner**) → the normal
+  post-commit verified `get` — identical bytes under CAS. The
+  slow-subscriber policy (drop-and-late-join) is ops-layer policy,
+  not a store concern. Named design point: **the producer side's
+  shape** — the put handler's stream reader as the canonical producer
+  (serve-while-persisting, A3's shape), and whether fetches also
+  produce read-side broadcasts (concurrent fetchers of one stored
+  digest sharing one store read) — decide and record against the A3
+  text.
+- **The miss shape**: a fetch of an absent digest is the typed
+  missing-error schema (the need announcement *is* the fetch miss —
+  the have/need diff is caller-side; no separate need op exists).
+- **Tests through the harness**: the whole-blob verified round-trip
+  (byte-exact; the client's hash-check passes); the ranged form
+  (bytes + slice digest matching `read_range`'s convention); the
+  fanout consumer side (a live broadcast tapped — the subscriber
+  receives while the producer runs; a late joiner degrades to the
+  get path — asserted by which path served); the miss shape; the ACL
+  denial (no read grant on the namespace → denied).
+
+## Acceptance Criteria
+
+- [ ] fetch exported as a Sub spec/handler pair with the
+      `channel_open` marker + ALPN; the establishment reply fields
+      carry the specced ack shape
+- [ ] Whole-blob verification: the received whole hash-checks against
+      the carried digest (the consumer-side discipline documented on
+      the op; the server streams verified-store bytes)
+- [ ] Ranged fetch carries the ADR-006 slice-digest convention
+      (out-of-band, over exactly the returned bytes)
+- [ ] The fanout consumer side: a live broadcast → subscriber arm; a
+      late joiner → the verified get path; the producer-side design
+      point decided and recorded
+- [ ] The miss shape is the typed missing error; the have/need diff
+      stays caller-side (no need op invented)
+- [ ] ACL: the read action; closed-by-default verified by test
+- [ ] Handlers touch only the store facade (no backend side-door)
+- [ ] Harness tests green; `cargo test` (default) green;
+      `cargo test --features ops` green; clippy/fmt green on both
+      shapes; `cargo doc --no-deps` clean
+
+## References
+
+- docs/architecture/ops-surface.md (§Op family — the fetch bullet +
+  the fanout text; the need-half note)
+- docs/architecture/decisions/006-verification-posture-and-transfer-encoding.md
+  (whole-blob verification; the slice-digest convention)
+- docs/architecture/decisions/008-trait-size-probe-fleet-gc-and-large-engines.md
+  §3 (the re-routing topology this op serves — large-blob access
+  through a storage node)
+- docs/research/poc-largeblob-findings.md finding A3 (the fanout
+  seam: one reader, store arm + subscriber arms; late joiners
+  degrade to get-after-commit)
+- alkcall (upstream checkout): ADR-021 (streaming handler for
+  subscriptions), ADR-046/047/049 (the sink kind, the channel_open
+  marker, the establishment phase), `src/channels/client.rs`
+- tasks/ops-foundation.md (the fanout registry's mechanics),
+  tasks/ops-call-harness.md (the harness)
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion

tasks/ops-foundation.md

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+---
+id: ops-foundation
+name: the ops module's substrate — the token layer, the namespace binding, and the fanout registry
+status: pending
+depends_on: []
+scope: moderate
+risk: medium
+impact: component
+level: implementation
+tags: [wave-7, ops, tokens, fanout, namespaces]
+---
+
+## Description
+
+The `ops` feature's state substrate in `src/ops.rs` (currently the
+ADR-001 stub doc comment) — everything the five op handlers ride, and
+none of the handlers themselves (they land in the following tasks).
+The module is a **store-facade consumer** (ADR-001 §4): its store
+access is the public facade plus the crate-internal renewal seam named
+below — no backend side-door, no engine types.
+
+- **Module structure + the ops context**: the feature-gated module
+  shape (`#[cfg(feature = "ops")]`, re-exported from `lib.rs` per the
+  one-module-per-file convention); the ops-layer context type binding
+  the `Arc<Store>`, the module's state (the token registry, the
+  namespace bindings, the fanout registry), and the module config.
+  This context is what the handler pairs (later tasks) capture.
+- **The pin-token layer** (ADR-010 §4; ADR-012 §2): opaque token
+  minting over a landed put's pin; the **token↔(key, owner) in-memory
+  mapping with process lifetime** (outlives the minting handler —
+  ADR-012 §2's correction of the original handler-lifetime wording);
+  the **validity domain is the minting node** — the registry is
+  per-process state, there is no cross-node form, and fleet peers
+  refuse tokens they did not mint (`present: false`, not an error).
+  Named design points: **the token's minting form** (a CSPRNG id —
+  e.g. `getrandom` gated behind `ops`; a counter or derivable form is
+  rejected as a guessable capability — decide and record), and **the
+  mapping's retention discipline** (when a mapping retires:
+  conversion-confirmed or process end; the mapping carries no expiry
+  machinery of its own — the pin row's expiry is the fleet liveness
+  signal, and nothing expires non-fleet).
+- **The guard-custody design** (the fleet/non-fleet split ADR-010 §4
+  pins): under fleet, the put handler's `Pin` guard **drops at
+  response completion** — the pin row's expiry is the only protection
+  from that moment, which is exactly why the TTL/3 renewal duty
+  exists (a guard held for the token's whole life would make the TTL
+  machinery dead code on the ops path); under non-fleet, the token
+  registry **holds the guard** — the token is the in-process guard's
+  handle (ADR-012 §2's generalization: sqlite, single-instance
+  postgres, pg-lo, `local`, `mem` — nothing expires outside fleet
+  mode) until the embedder's registration confirms and the guard
+  converts. The custody split is the token layer's core branch.
+- **The namespace→liveness-source binding** (ops-surface.md §Op
+  family, hand-over contract step 3): the embedder's converter seam —
+  per-namespace registration of the converter the embedder plugs its
+  registry into ("A `Pin` conversion on the server side (token →
+  registered liveness source) is the mechanism the embedder plugs its
+  registry into"). The conversion rides the crate-internal
+  `RegistryCore::convert` machinery (wave 2). Named design point: **
+  the conversion trigger** (an embedder-called confirm verb vs a
+  probe-triggered conversion — decide and record; the hand-over
+  contract's duty text is the embedder's, the mechanism is this
+  module's).
+- **The crate-internal store-core renewal access** (ADR-010 §4: "the
+  ops module is in-crate and crosses the seam by construction, the
+  same way the put handler holds the `Pin` guard"): the renewal
+  probe's access to `pin_renew(key, owner)` and `pin_check(key)`
+  through the fleet host — the `pin_check` deliberately-unconsumed
+  note from the wave-6 review (W6-3) names this consumer. The exact
+  probe composition (verify-the-mapping-then-renew vs
+  renew-answers-the-verification) is a named design point against
+  ADR-012 §2's three-step handler duty. What never happens: a *
+  consumer* reaching the seam, or a public-API widening for this.
+- **The fanout registry** (ops-surface.md's fetch fanout seam; POC #3
+  finding A3): per-digest broadcast state — one reader, store arm +
+  subscriber arms; bounded subscriber channels (the backpressure
+  discipline: a slow subscriber stalls the broadcast, which is
+  correct for a put — subscriber count bounded, slow-subscriber
+  handling is policy); the **late-joiner signal** (broadcast ended →
+  the degrade-to-verified-get path); the **drop-and-late-join**
+  slow-subscriber policy as ops-layer policy. The producer wiring
+  lands with `ops-put`, the consumer wiring with `ops-fetch`; the
+  registry's mechanics land here, unit-tested standalone.
+- **The renewal-cadence boundary** (ADR-013 §1): the module ships the
+  renewal *mechanism* (the have form's handler); the TTL/3 *cadence*
+  — the putter's renewal worker — is embedder composition above the
+  facade (scheduler/queues), never in-crate machinery. Documented on
+  the module, not implemented.
+- **Dependency posture**: `serde`/`serde_json` (payload handling) and
+  the token CSPRNG enter as `ops`-gated dependencies — the base crate
+  stays lean (convention 8; ADR-013 §4's engine table unchanged —
+  `ops` pulls alkcall plus these, default-off).
+- **Unit tests**: token mint/lookup/retirement and the mapping's
+  process-lifetime semantics; the custody split (the fleet and
+  non-fleet forms branch as designed); the namespace binding's
+  converter invocation; the fanout registry's subscribe /
+  late-joiner-degrade / slow-subscriber-drop mechanics.
+
+## Acceptance Criteria
+
+- [ ] `src/ops.rs` carries the module structure under feature `ops`:
+      the ops context, the token layer, the namespace binding, the
+      fanout registry — no op handlers yet (they land in
+      ops-json-ops/ops-fetch/ops-put)
+- [ ] The token layer: opaque, unguessable minting (the CSPRNG design
+      point decided and recorded); the token↔(key, owner) mapping with
+      process lifetime; validity domain = the minting node (a
+      per-process registry; no cross-node form exists)
+- [ ] The guard-custody design decided and recorded: fleet — the
+      guard drops at response completion (the row's expiry is the
+      liveness signal); non-fleet — the registry holds the guard
+      (nothing expires) until conversion
+- [ ] The namespace→liveness-source binding: per-namespace converter
+      registration riding `RegistryCore::convert`; the conversion
+      trigger design decided and recorded
+- [ ] The crate-internal renewal access: the ops module reaches
+      `pin_renew`/`pin_check` through the fleet host (in-crate seam
+      crossing; no public-API widening; no backend side-door)
+- [ ] The fanout registry: per-digest broadcast, bounded subscriber
+      channels, the late-joiner degrade signal, the
+      drop-and-late-join policy point recorded
+- [ ] New dependencies (`serde`, `serde_json`, the CSPRNG) are
+      `ops`-gated; the default build's dependency tree is unchanged
+- [ ] Unit tests green; `cargo test` (default) green with the module
+      compiled out; `cargo test --features ops` green;
+      `cargo clippy --all-targets -- -D warnings` and
+      `cargo fmt --check` green on both shapes; `cargo doc --no-deps`
+      clean
+
+## References
+
+- docs/architecture/ops-surface.md (§Op family — the hand-over
+  contract; §ACL mapping; §Store-facing relationship)
+- docs/architecture/decisions/001-substrate-posture-and-ops-placement.md
+  §3/§4 (placement; the facade-consumer rule)
+- docs/architecture/decisions/010-backend-io-seams-and-fleet-state-home.md
+  §4 (the token contract: minting, custody, validity domain, the
+  in-crate seam crossing)
+- docs/architecture/decisions/012-pre-decomposition-consistency-rulings.md
+  §2 (the wire shapes: {token, digest}; the have renewal form; the
+  validity domain; the non-fleet generalization)
+- docs/architecture/decisions/013-family-composition-reactive-boundary-and-feature-graph.md
+  §1 (the renewal cadence is embedder composition), §4 (the feature
+  graph)
+- docs/research/poc-largeblob-findings.md finding A3 (the fanout seam
+  shape)
+- src/ops.rs (the ADR-001 stub this task fills)
+- src/gc.rs (`EngineFleetState::pin_renew`/`pin_check` — the seam the
+  renewal access crosses; `RegistryCore::convert`)
+- src/store.rs (`Store::gc()` — the crate-internal access path)
+- tasks/review-wave-6.md (W6-3: `pin_check` deliberately unconsumed —
+  this wave's renewal probe is the named consumer)
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion

tasks/ops-json-ops.md

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+---
+id: ops-json-ops
+name: the JSON control plane — blobs/stat, blobs/have (+ the token-renewal form), blobs/delete
+status: pending
+depends_on: [ops-foundation, ops-call-harness]
+scope: moderate
+risk: medium
+impact: component
+level: implementation
+tags: [wave-7, ops, json, acl, tokens]
+---
+
+## Description
+
+The three JSON control ops (ops-surface.md §Op family), each exported
+as a spec/handler pair the embedder assembles — riding alkcall's
+`OperationSpec` + JSON Schema validation (alkcall ADR-016) and its ACL
+machinery at op entry (convention 6: this module never re-implements
+an authorization check):
+
+- **`blobs/stat`** `{namespace, digest}` → `{len}` — Query; the
+  **read** action; the handler calls `Store::stat` (the fall-through
+  general rule, ADR-012 §6.1); a miss is the typed missing-error
+  schema (not a `{len: null}`).
+- **`blobs/have`** `{namespace, digests[], token?}` → `{present[]}` —
+  Query; **read-gated** (an existence probe over arbitrary digests is
+  a discovery surface — gated exactly like fetch, not public);
+  `present[]` corresponds to `digests[]` by index; content never
+  traverses this op (hashes only). **The renewal form** (ADR-012 §2):
+  when `token` is present, exactly one digest accompanies it — the
+  handler verifies the token maps to that digest's pin row (the
+  foundation's token layer), calls the crate-internal `pin_renew(key,
+  owner)` via the foundation's store-core access, and answers
+  `present[]` as usual; an expired or foreign row answers
+  `present: false` and no renewal occurs — the putter's backstop is
+  re-put. Without `token`, the pure existence probe (ADR-008's `has`
+  discipline) over the facade's `has`. **The non-fleet renewal form**:
+  the token is the held guard's handle — the probe answers present
+  from the custody (nothing expires; ADR-012 §2's generalization);
+  the custody/conversion lifecycle is the foundation's.
+- **`blobs/delete`** `{namespace, digests[]}` — Mutation;
+  **`Visibility::Internal`**, evaluated under the internal authority
+  context per alkcall ADR-017 (internal calls switch authority
+  context, never skip ACL): requires the embedder's operator/admin
+  authority context, **not a namespace grant**; the `namespace` field
+  exists for audit/triage scoping, not gating. The handler calls
+  `Store::delete` (the arbitration-then-delete path; a `GcRefuse`
+  refusal surfaces as the typed error schema). External discovery of
+  an Internal op returns NOT_FOUND (alkcall ADR-017's visibility
+  discipline).
+- **The ACL mapping** (ops-surface.md §ACL mapping; OQ-09's
+  resolution): **namespace = resource** — `resource_type:
+  "blob-namespace"`, `resource_id_path` selecting the payload's
+  `namespace` field; stat/have = the **read** action; **unlisted
+  namespaces deny by default** (closed-by-default: no ACL entry ⇒ no
+  read, no write — a grant per namespace is the deferred cost,
+  deliberately paid over accidental exposure).
+- **Schemas** (alkcall ADR-016): input/output JSON Schema per op +
+  typed error schemas; the namespace field's syntax (non-empty UTF-8
+  string, embedder-validated — the minting of namespaces is the
+  embedder's act); the digest wire form is **hex** (the canonical
+  digest hex — the same form `blobs/put`'s response returns; parsed
+  via the key layer's hex ingress, malformed → the typed invalid
+  error, rejects-never-guesses).
+- **Tests through the harness** (`ops-call-harness`): stat round-trip
+  + the miss shape; have's index correspondence (present/absent
+  mixed); the renewal form's three answers (live row renews →
+  present: true; expired row → present: false, no renewal; foreign
+  token → present: false); delete under the internal authority
+  context (an external caller gets NOT_FOUND; an internal
+  operator-context call deletes); the closed-by-default ACL matrix
+  (an unlisted namespace denies read; a granted identity reads).
+
+## Acceptance Criteria
+
+- [ ] Three spec/handler pairs exported (stat, have, delete); input/
+      output schemas + typed error schemas per alkcall ADR-016
+- [ ] The ACL mapping: namespace-as-resource with the
+      resource_id_path; the read action on stat/have;
+      closed-by-default verified by test (unlisted namespace denies)
+- [ ] delete: `Visibility::Internal`, the internal-authority-context
+      requirement (not namespace-gated), external discovery NOT_FOUND
+- [ ] have's renewal form: one digest + token; verify-mapping →
+      `pin_renew`; expired/foreign → `present: false` with no
+      renewal; the non-fleet form answers from the held custody
+- [ ] The handlers touch only the store facade + the foundation's
+      crate-internal renewal access (no backend side-door — the
+      ADR-001 §4 rule)
+- [ ] Harness tests green; `cargo test` (default) green;
+      `cargo test --features ops` green; clippy/fmt green on both
+      shapes; `cargo doc --no-deps` clean
+
+## References
+
+- docs/architecture/ops-surface.md (§Op family — the three JSON ops;
+  §ACL mapping)
+- docs/architecture/decisions/001-substrate-posture-and-ops-placement.md
+  §2/§4
+- docs/architecture/decisions/012-pre-decomposition-consistency-rulings.md
+  §2 (the have payload shape + the renewal form's three-step handler
+  duty)
+- docs/architecture/decisions/008-trait-size-probe-fleet-gc-and-large-engines.md
+  (the `has` discipline the non-token form preserves)
+- docs/architecture/open-questions.md OQ-09 (closed-by-default, the
+  risk-asymmetry rationale)
+- alkcall (upstream checkout): ADR-016 (operation error schemas),
+  ADR-017 (the privilege model — internal switches context, never
+  skips ACL), `src/registry/spec.rs` (`AccessControl`,
+  `resource_id_path`)
+- tasks/ops-foundation.md (the token layer + the renewal access the
+  have handler rides), tasks/ops-call-harness.md (the harness)
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion

tasks/ops-put.md

@@ -0,0 +1,128 @@
+---
+id: ops-put
+name: blobs/put — the verified Sink op, the pin hand-over, and the {token, digest} response
+status: pending
+depends_on: [ops-foundation, ops-call-harness]
+scope: moderate
+risk: high
+impact: component
+level: implementation
+tags: [wave-7, ops, put, tokens, hand-over, verification]
+---
+
+## Description
+
+`blobs/put` (ops-surface.md §Op family) — the client→server streaming
+op: `{namespace, digest?, len?}` offer + the byte stream in; the
+server verifies against the canonical derivation **before commit**;
+the response is **`{token, digest}`** (ADR-012 §2).
+
+- **The op shape**: the Sink handler kind (alkcall ADR-046's
+  `Pub`/Sink — the client→server streaming shape) with the
+  **`channel_open` marker** (alkcall ADR-047); the establishment
+  phase carries the offer ack. The **write** action (ACL;
+  closed-by-default).
+- **Verification before commit** (ADR-006; ops-surface.md): the
+  server hash-checks the received stream against the canonical
+  derivation (`H("blob <len>\0" + content)`) before commit. A
+  **known-length offer** (`len` present) is the encouraged one-pass
+  path; an **unknown-length offer** rides the store's pre-threshold
+  buffering path (ADR-003's option (d) semantics — the facade's
+  `put(None, …)` form, the mid-stream stage flush and the
+  restart-over-staged-bytes derivation pass riding unchanged). When
+  the offer carries `digest?`, the derived key is checked against it
+  — a mismatch rejects before commit (the offered digest is a
+  claim; the derivation is the authority).
+- **The pin hand-over** (ops-surface.md §Pin hand-over; ADR-010 §4):
+  the put lands pinned (pin-before-publish — the facade's put
+  returns the `Pin` guard); the handler owns the guard; the custody
+  split is the foundation's design, realized here:
+  - **fleet**: the guard **drops at response completion** — the pin
+    row's expiry is the only protection from that moment (the TTL
+    machinery stays live on the ops path); the token mints over the
+    committed row (the token↔(key, owner) mapping, owner = the
+    serving instance's id);
+  - **non-fleet**: the token registry **takes custody** of the guard
+    — the token is the in-process guard's handle; nothing expires;
+    the guard's fate is the custody lifecycle (conversion on the
+    embedder's confirmation, or process-lifetime hold).
+  The response returns `{token, digest}` — **both fields always
+  present** (ADR-012 §2): `digest` is the stored entry's canonical
+  digest hex (the unknown-length putter cannot know it beforehand and
+  needs it for every later op); `token` is the minted opaque handle.
+  Known-length putters receive the same shape.
+- **The fanout seam's producer side** (POC #3 finding A3): the put's
+  stream reader is the canonical fanout producer — **one read** of
+  the incoming stream (never polled twice), the **store arm**
+  persists, **subscriber arms** serve concurrent fetchers of that
+  digest while the put lands (serve-while-persisting); the wiring
+  into the foundation's fanout registry. Backpressure: bounded
+  subscriber channels — a slow subscriber stalls the broadcast,
+  which is correct for a put (the put must land); the
+  drop-and-late-join escape is the fetch side's policy.
+- **The dedup re-put**: CAS dedup means no new entry — the re-put
+  renews the pin row (fleet: the joint tx's upsert-renewal of
+  `(key, owner)`) or re-mints the custody guard (non-fleet); the
+  re-put backstop's mechanics ride the facade's CAS unchanged.
+- **Tests through the harness**: the known-length round-trip (the
+  response's digest matches the git derivation — the byte-exact
+  standard); the unknown-length round-trip (the buffering path
+  through the wire); the verification-failure shape (a
+  byte-corrupted stream → no commit, the typed error, zero residue
+  on both tiers); the offer-digest mismatch rejection; the hand-over
+  custody split (fleet: the guard dropped at response — observable
+  via the row's expiry path; non-fleet: the registry holds the guard
+  — observable via have-present); the minted token renews via
+  have's renewal form (the cross-task contract); the dedup re-put;
+  the ACL denial (no write grant → denied).
+
+## Acceptance Criteria
+
+- [ ] put exported as a Sink spec/handler pair with the
+      `channel_open` marker; the establishment reply fields carry the
+      offer ack
+- [ ] Server-side verification before commit; an offer-digest
+      mismatch rejects before commit; a verification failure leaves
+      zero residue on both tiers
+- [ ] The response is `{token, digest}`, both fields always present;
+      `digest` is the canonical hex (the unknown-length putter's
+      later-op handle)
+- [ ] The hand-over custody split implemented per ADR-010 §4 (fleet:
+      the guard drops at response completion — the row is the
+      signal; non-fleet: the registry holds the guard — nothing
+      expires)
+- [ ] The fanout producer side wired: one read of the incoming
+      stream, the store arm + subscriber arms (serve-while-
+      persisting)
+- [ ] The dedup re-put renews (row upsert fleet-form / custody
+      re-mint non-fleet)
+- [ ] Harness tests green; `cargo test` (default) green;
+      `cargo test --features ops` green; clippy/fmt green on both
+      shapes; `cargo doc --no-deps` clean
+
+## References
+
+- docs/architecture/ops-surface.md (§Op family — the put bullet; §Pin
+  hand-over for remote puts — the cross-wire contract)
+- docs/architecture/decisions/012-pre-decomposition-consistency-rulings.md
+  §2 (the {token, digest} response; both fields always present)
+- docs/architecture/decisions/010-backend-io-seams-and-fleet-state-home.md
+  §4 (the guard drops at response time — the TTL-machinery-alive
+  rationale; the non-fleet custody)
+- docs/architecture/decisions/006-verification-posture-and-transfer-encoding.md
+  (verification before commit)
+- docs/architecture/decisions/003-backend-contract-and-dispatch.md
+  (the staged-put contract; the unknown-length path the wire rides)
+- docs/research/poc-largeblob-findings.md finding A3 (the fanout
+  producer shape)
+- tasks/ops-foundation.md (the token layer, the custody design, the
+  fanout registry), tasks/ops-call-harness.md (the harness),
+  tasks/ops-json-ops.md (the renewal form the minted token rides)
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion

tasks/review-wave-7.md

@@ -0,0 +1,142 @@
+---
+id: review-wave-7
+name: Wave 7 review gate — the ops-vs-alkcall conformance gate
+status: pending
+depends_on: [ops-e2e-flows]
+scope: narrow
+risk: low
+impact: phase
+level: review
+tags: [wave-7, review]
+---
+
+## Description
+
+The wave-7 review gate (docs/plans/implementation.md §Review gates:
+"ops-vs-alkcall conformance (the machinery ridden, not re-invented);
+ACL mapping vs OQ-09's closed-by-default; the pin token contract vs
+ADR-010 §4/ADR-012 §2; no backend side-door"), before wave 8
+decomposes. The gate reads the implementation against the pinned ADR
+text line by line (the wave-1..6 gates' method) — the documents, not
+memory.
+
+Gate checks:
+
+- **ops-vs-alkcall conformance — the machinery ridden, not
+  re-invented**: the JSON control plane rides `OperationSpec` + JSON
+  Schema validation + typed error schemas (alkcall ADR-016); the
+  binary data plane rides the `channel_open` marker + establishment
+  (alkcall ADR-047/049) with the Sub/Sink handler kinds (ADR-021/
+  046); ACL is alkcall's `AccessControl` at op entry (ADR-011) under
+  the ADR-017 privilege model; producer/consumer vocabulary
+  throughout; no parallel framing, validation, or authorization
+  invented anywhere in the module.
+- **ACL mapping vs OQ-09's closed-by-default**: namespace-as-resource
+  (`resource_type: "blob-namespace"`, the `resource_id_path`
+  selecting the payload's `namespace` field); the read action on
+  fetch/stat/have, the write action on put; unlisted namespaces deny
+  by default (no ACL entry ⇒ no read, no write — verified by test,
+  not by reading the code); delete not namespace-gated at all —
+  internal authority context only (alkcall ADR-017: internal switches
+  context, never skips ACL).
+- **The pin token contract vs ADR-010 §4/ADR-012 §2**: the token *is*
+  the pin (no second pin state); the `blobs/put` response
+  `{token, digest}` with both fields always present; the have
+  renewal form (one digest + token; verify-mapping → the crate-
+  internal `pin_renew`; expired/foreign → `present: false`, no
+  renewal); the token's validity domain = the minting node (foreign
+  tokens refused `present: false`, not an error); the mapping's
+  process lifetime (outlives the handler); the guard-custody split
+  (fleet: the guard drops at response completion — the row's expiry
+  is the liveness signal; non-fleet: the registry holds the guard —
+  nothing expires); the TTL/3 renewal cadence is embedder
+  composition (ADR-013 §1) — no in-crate renewal worker.
+- **No backend side-door** (ADR-001 §4): the ops module's store
+  access enumerated — the public facade plus the crate-internal
+  renewal seam only; no `Backend` touch, no engine types, no
+  ops-internal path around the store facade; the e2e audit's
+  enumeration re-verified against the code.
+- **The fanout seam vs POC #3 finding A3**: one reader, store arm +
+  subscriber arms; late joiners degrade to a verified post-commit
+  `get` (identical bytes under CAS); the slow-subscriber
+  drop-and-late-join policy is ops-layer; the producer-side design
+  point consistent with the A3 text.
+- **The base crate stays lean**: the `ops` feature default-off; the
+  alkcall + serde + CSPRNG deps ride the gate; the default build's
+  dependency tree unchanged (convention 8; ADR-013 §4's table).
+- **Code-smell / hygiene sweep** (the gate's standing hygiene block):
+  - **`cargo doc --no-deps` zero warnings** (the PGLO-1 class —
+    public-module doc links resolving to crate-internal items —
+    de-link rather than export).
+  - **The `#![allow(dead_code)]` scope notes match their remaining
+    scope** — the ops module's notes audited; `pin_check`'s
+    wave-6 "deliberately unconsumed" note updated to its landed
+    state.
+  - **Stale forward references updated** — every "wave 7" note in
+    the module docs reads the landed state.
+  - **Family conventions**: no inline comments in code (doc comments
+    on public API fine), thiserror, tokio-only async, no
+    `unwrap`/`expect` outside tests, naming, one-module-per-file
+    re-export shape, no blocking I/O on the async path.
+  - **Task-description correctness**: each wave-7 task's Summary
+    matches what actually landed (the gate reads the diffs against
+    the task texts, not the Notes' claims alone).
+- **Gates green**: `cargo test` (default), `cargo test --features
+  ops`, `cargo test --all-features` (the fleet rows live at
+  acceptance), the pure builds (`cargo check --no-default-features
+  --features postgres` / `--features "postgres,pg-lo"`),
+  `cargo clippy --all-targets -- -D warnings` across the feature
+  variants (default, ops, all-features, the pg-pure builds),
+  `cargo fmt --check`, `cargo doc --no-deps`.
+
+Findings are fixed inline where cheap, or recorded as wave-8
+amendments where they shape the next decomposition (the fuzzing
+wave's target inventory reads this wave's surfaces — a payload-shape
+finding lands beside it). The gate's completion is what unblocks
+wave 8's decomposition.
+
+## Acceptance Criteria
+
+- [ ] Every gate check above read and verified against the cited ADR
+      text (not from memory of it)
+- [ ] Named design points each decided, recorded, and consistent with
+      the specs
+- [ ] Findings fixed inline or recorded as wave-8 amendments with
+      owners
+- [ ] All gates re-run green after any fixes — including
+      `cargo doc --no-deps` explicitly (the PGLO-1 class)
+- [ ] Wave 8 decomposition unblocked (recorded in this task's
+      Summary)
+
+## References
+
+- docs/plans/implementation.md (§Wave 7, §Review gates — the
+  ops-vs-alkcall conformance gate)
+- docs/architecture/ops-surface.md (the op family, the ACL mapping,
+  the hand-over contract)
+- docs/architecture/decisions/001-substrate-posture-and-ops-placement.md
+  §2/§3/§4
+- docs/architecture/decisions/006-verification-posture-and-transfer-encoding.md
+- docs/architecture/decisions/008-trait-size-probe-fleet-gc-and-large-engines.md
+  §2/§3
+- docs/architecture/decisions/010-backend-io-seams-and-fleet-state-home.md
+  §4
+- docs/architecture/decisions/012-pre-decomposition-consistency-rulings.md
+  §2
+- docs/architecture/decisions/013-family-composition-reactive-boundary-and-feature-graph.md
+  §1/§4
+- docs/architecture/open-questions.md OQ-09
+- docs/research/poc-largeblob-findings.md finding A3
+- tasks/review-wave-6.md (the gate method; the W6-3 note this gate
+  audits closed)
+- tasks/ops-foundation.md, tasks/ops-call-harness.md,
+  tasks/ops-json-ops.md, tasks/ops-fetch.md, tasks/ops-put.md,
+  tasks/ops-e2e-flows.md (the wave's tasks)
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion