* test(sse): golden characterization of the executor map before the R0.3 registry refactor
Freezes the 137-entry provider-id → executor mapping (class, provider
identity, backing PROVIDERS config), the no-shared-instances invariant,
and the getExecutor() dispatch rules (memoized DefaultExecutor fallback,
cloud-agent guard #6699, search-provider guard #10274) as stable JSON
snapshots. The upcoming ExecutorRegistry must keep both snapshots
byte-identical.
* refactor(sse): route executor lookup through ExecutorRegistry (R0.3)
Adds open-sse/executors/registry.ts (Map-based registry mirroring
translator/registry.ts): the built-in table in executors/index.ts stays
declarative, every entry is registered at module load, and
getExecutor()/hasSpecializedExecutor() resolve through the registry.
DefaultExecutor fallback, its memoization, and the cloud-agent (#6699) /
search-provider (#10274) guards are unchanged.
Also fixes a latent lookup leak: the old object-literal lookup treated
Object.prototype names (constructor, toString, ...) as specialized
executors; the Map registry resolves them to the DefaultExecutor
fallback like any unknown provider.
Parity proof: executor-map golden (137 entries, byte-identical
before/after), check:known-symbols green, 1018 tests across the 65
executor test files green. Docs: OPEN_SSE_ARCHITECTURE factory section
corrected (it claimed generation from providerRegistry).
Refs #3501
* test(executors): regenerate ExecutorRegistry golden snapshots after release sync
release/v3.8.50 sunset mimocode and added cloudflare-playground + jina-search
since this PR's snapshots were captured; refresh the golden fixtures to match.
---------
Co-authored-by: Xiangzhe <bakryun0718@proton.me>
Co-authored-by: Markus Hartung <mail@hartmark.se>
Co-authored-by: adevwithpurpose <adevwithpurpose@users.noreply.github.com>
