docs(specs): add Spec 78, the canonical API resource model - #194
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Spec 78 redesigns the API surface Spec 76's mechanics serve: the scene tree becomes the only mutation vocabulary for what renders, effects become a pure catalog with one documented sugar verb, power and brightness merge into one /output resource, and profiles fold into scenes via a lossless idempotent import. The route set drops from 111 paths to 81 (normative inventory in Appendix A), with an estimated 8 to 12k LOC of net deletion across daemon and clients. Grounded in the 2026-08-16 full-surface review (REST route table plus four audit lanes: WS, MCP, clients, OpenAPI/security/docs). Converged through four codex review rounds, finding trajectory 20 -> 8 -> 1 -> 0, with dispositions recorded in section 10. A post-convergence update reframes wave C1b from struck to consumed, since that wave was found in flight on nova/s76-c1b-naming-flip. Co-Authored-By: Nova (Claude Fable 5) <noreply@anthropic.com>
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📝 WalkthroughWalkthroughSpec 78 adds a complete API redesign specification. It defines the ChangesAPI Resource Model
Estimated code review effort: 1 (Trivial) | ~5 minutes Merge Risk: 🟡 Moderate · up to This PR defines a substantially redesigned API resource model, but key mutation, replacement, retry, and route-inventory contracts remain ambiguous or inconsistent. That could lead to client conflicts, unsafe retries, or mismatched implementations, so the specification should be clarified before merge. Possibly related PRs
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Actionable comments posted: 7
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Inline comments:
In `@docs/specs/78-api-resource-model.md`:
- Line 21: Fix the two prose lint findings: hyphenate “single user” as
“single-user” in the Doctrine text, and change “Both UIs and CLI” to “Both UIs
and the CLI” at the other reported occurrence. Make no other wording changes.
- Around line 33-53: Update all four fenced route blocks in the specification,
including the block containing the scene routes, to use the text language tag on
their opening fences. Preserve the route contents unchanged.
- Around line 191-194: Resolve the contradiction in the §6.1 parameter policy by
removing set_effect.transition_ms from the documented interface, or explicitly
defining it as a compatibility field with a removal timeline and required client
behavior; ensure the surrounding phantom-parameter guidance matches the chosen
behavior.
- Line 235: Align Appendix A’s stated route scope with its table by removing the
GET /api/v1/ws entry, or explicitly expanding the scope to include WebSocket
routes and updating all related counts and convergence-test assumptions. Keep
the manifest and planned router-to-Appendix comparison consistent.
- Around line 35-43: Define the revision/conflict semantics for PATCH /scene and
PUT /scene/zones/{zone}/layout in the API specification, including the required
If-Match/ETag or revision guard behavior. Update the guarded mutation list in
§1.6 so both live-tree routes follow the same conflict contract as the other
live-scene mutations, or explicitly document an equivalent concurrency policy.
- Around line 131-133: Define the request contract for PUT /scenes/{id} in §3.1,
including its complete request schema, required fields, id and revision
handling, and whether omitted fields are cleared under whole-document
replacement. Align the specification with UpdateSceneRequest and the existing
e2e request examples, or explicitly identify the required migration if those
partial-update semantics must change.
- Line 67: Update the apply and activation endpoint specifications to define the
response after a post-commit layout or brightness failure: return the
committed-state 2xx response with applied false and the required DomainError
envelope, rather than reporting an uncommitted operation. Document that clients
must not blindly retry apply because it mints a new layer id; retries require an
explicit read/reconciliation decision, while activation retries may follow its
idempotency contract.
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docs/specs/78-api-resource-model.md
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Rev 5 converged one day before ten PRs landed, so every cross-spec claim needed re-verification before the lock. Section 7.1 is rewritten from "amends wave 3.2 acceptance criteria" (that arc has shipped) into a landed/owned split with fresh receipts: the zone vocabulary renames and RPC tag deletion are struck as shipped; the hello singletons, zone_layout_preview keying, backpressure classes, generated vocabulary and manifest, error vocabulary, frames toggle, and remaining wire fixes transfer to waves 78.3/78.4. Section 7.3 records C1b as landed and the 3.1 gating as overtaken by execution, with the accepted churn named. Wave 3.3 is explicitly sequenced after 78.5 so the OpenAPI catalog is born against Appendix A. Spec 76's wave table picks up the same unification: 3.1 batch statuses, the 3.3 resequencing, the 0x80/0x81 fixture annotation, and the persisted-groups rename reassigned to Phase 5.1, where the scene-schema bump already lives. Two codex review rounds over the reconciliation; all eight findings closed, incl. two false claims of my own the first round caught (the frames toggle is still live; effects+library is in flight, not shipped). Co-Authored-By: Nova (Claude Fable 5) <noreply@anthropic.com>
Three were real contract gaps: the If-Match guarded set omitted two
structural live-tree mutations (scene-level PATCH and the zone layout
PUT), nothing stated what an apply or activation returns when a
post-commit side effect fails (now: 200 with outcome fields, repair
through the side effect's own route, never a blind re-apply since
apply mints a fresh layer id), and PUT /scenes/{id} had no request
contract (now: whole-document replace, path id authoritative,
omitted optionals clear, today's partial UpdateSceneRequest dies).
One was a genuine contradiction: set_effect.transition_ms with
maximum 0 survived the phantom-parameter rule it sat beside; it is
now deleted in favor of the same closed transition enum the REST
sugar takes. Appendix A's scope sentence now covers the /ws row it
already listed, and two prose lints are fixed.
Co-Authored-By: Nova (Claude Fable 5) <noreply@anthropic.com>
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💜 What this is
Spec 78 is the surface-level companion to Spec 76: where 76 unifies the internals (domain services, typed contracts, envelope, WS registry, OpenAPI catalog), 78 redesigns the resource model those mechanics serve. It is REVIEW-CONVERGED (four codex rounds, finding trajectory 20 → 8 → 1 → 0, full dispositions in §10) and awaits owner lock.
The shape of it:
/scenesingleton (always 200, no idle sentinel) owns zones, members, layer stacks, and controls. The pre-multi-zone singleton surface (/effects/active,/effects/current/*, pause/resume/stop) is deleted, not aliased. Real layer ids with a defined lifecycle replace the fake-layer hack both UIs ship today.include=expansion. One sugar verb survives:POST /effects/{id}/apply, defined as a documented projection of a zone-stack replacement, returning the canonical zone resource, with side-effect ordering stated in the contract./outputresource carries power and brightness./effects/pauseis literallyset_output_power(Paused)today, and no first-party client calls it; thesettingsdomain dies with the merge.POST /scenes/snapshotplus a lossless, crash-idempotent import (scenes gainlayout_idandactivation_brightnessso nothing a profile carried is dropped).segmentsvs scenezones,framefor snapshots,validate_onlyfor dry-runs,deactivatefor exclusive-currents, tagged enums for sum types, onePatchControlsRequestat every controls scope, one concurrency token.🎯 Grounding
The findings base is the 2026-08-16 full-surface review (route-table read plus four audit lanes: WS protocol, MCP, client consumption, OpenAPI/security/docs; local artifact in the gitignored
docs/review/). Headline receipts that shaped the design: both UIs forge a synthetic layer id to patch zone controls because the real resource is missing; the TUI hydrates the effect catalog N+1; the CLI's effect filters are silently dead because the handler takes noQueryextractor; five MCP tools advertise parameters they ignore.🌊 Coordination notes for review
nova/s76-c1b-naming-flipwas in flight when the spec converged, so §7.3 lets it land: its vocabulary renames become 78's floor and wave 78.3 deletes the transitional routes. If you'd rather halt C1b instead, §7.3 is the one section to flip.🤖 Generated with Claude Code
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