chore: sync vendored Comfy Router spec (cloud@2a369ae)

[comfy-pr-bot]

Automated sync of the public Comfy Router spec,
projected from the canonical contract (internal notes stripped).
Source: cloud@2a369ae.

It lands at spec/router-openapi.yaml and is a contract of its
own — it is never merged into another vendored spec in this repo.

This PR is on its own per-source-commit branch
(chore/sync-router-spec-2a369ae);
a later spec change opens a separate PR and will not touch this
branch, so a regen commit pushed here is safe.

No Router operations are currently unserved (as of cloud@2a369ae).

This note auto-refreshes while this PR is open: a change to comfy-api's
exclude list rewrites this section in place, and a change to the
PUBLISHED Router surface opens its own sync PR carrying the set as of
ITS commit. Once this PR is merged the note is a permanent snapshot —
for the current state, check services/comfy-api/drip/codegen.yaml in
Comfy-Org/cloud directly.

No regeneration step for this spec yet. Nothing in this repo reads
spec/router-openapi.yaml, so there is no low layer to regenerate before merge and
no spec-drift check to satisfy — merging vendors the contract and
nothing else. When Router code generation does land here, this
section should carry its command; it is configured upstream, in the
same sync workflow that opened this PR.

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