Lab #3918: stagecraft remote studio: one long-lived connection to serve instead of a swamp process per read

Follow-up from swamp-club #3658 (@swamp/stagecraft).

The remote studio (studio serve with the server input) reads serve through swampRunner in stagecraft/extensions/models/_lib/engine/studio_remote.ts, which starts a new swamp process for every read: model search, one model get per opened factory, and data query per watched work-item set. Each process boots the full CLI (about 300 MB and 40-80% CPU on the reporter's Mac).

The #3658 fix polls only while a studio page is open and backs off from 15s to 60s while nothing changes, which removes the cost when no page is open. A page left open (including a background tab) still costs 1 + N processes per poll.

Asked for in #3658: keep one connection to serve for the studio's reads, or one long-lived CLI or session, instead of a new process per query. This likely needs swamp-side support (a persistent client or an API the extension can call with the operator's login and grants) so the reads keep carrying the operator's identity, as --server does today.

Move the Zod argument-field extractor into @swamp-club/extension-scoring so the CLI and registry read schemas alike

Docs: extension quality scores with the registry formula and reports grade (swamp-club#3845)

serve: dispatch to an idle worker waits for its worker_busy write on the shared gateway transition tail

serve: worker enrollment resolves and creates the worker definition inside the serialized gateway transition tail

Datastore rework Phase 5 (team mode) 2/3: the CLI's serve upstream — with serverAddress, a v3 checkout commits, reads chunks and catches up through serve's datastore API, with no storage credentials

Extension dependencies: the shared import scan reads Babel syntax, not tokens (follow-up to #3969)

Rescore every extension's current version under rubric v5

Extension scoring queue: two replicas can claim the same pending event

Scheduled flaky-test detection is failing

Manual: the supported extension dependency categories, the canonical form and the lock rule, rewritten once against the final design

Registry audits v2 extension archives as written, and a range costs the loose point only without a valid lock

Extension consumers keep the publisher's bundle: pull, update and auto-resolve stop rebuilding (direction A for #3634)

Extension push: inputs that open up (workspace root lock, ancestor config refused by name, JSR dist-tags) and the skill docs rewritten once

Extension push ships the canonical form: every npm:/jsr: import pinned exact, and a v2 dependency-audit.json

stagecraft studio ticket columns: round-5 review lows from #3828 (source watch cost, relationText lookup, cross-instance claim)

A long-lived serve client for extensions, and a stable rate_limited error code

swamp serve on a v3 datastore never settles a workflow run left running by a stopped instance: boot reaper skips it as belonging to a remote instance

swamp serve on a v3 datastore: a run interrupted at a clean shutdown is never committed when the bucket is slow, and stays running for every other checkout

Support creating 1Password vaults for new clients

Filesystem datastore: an unclean shutdown leaves zero-byte data versions as the latest version, and `doctor datastores --repair` does not detect them

datastore_v3_replica_verify_test stall case flakes under the full integration run: restore.pid is read before the stub writes it

Generated state schemas require every child of nested objects, so normal resources warn on create/get

Add LinkedIn as a login provider

Showcase reward backfill can double-pay 5,000,000 points when replicas start together

Showcase editor: caption counter is not announced to screen readers

Profile showcase read: approved list sorts on review.reviewedAt in memory

Showcase countByStatus: $match live statuses before the $group

Showcase admin queues: index-serve the updatedAt sort on approved/rejected

Annotate and retain past workflow runs and data after the fact

Docs: --trusted-hosts accepts host:port for public addresses on non-default ports

A workflow step's method output is invisible to `data query` and `data list`, and the method summary's retrieval command returns an older run's data

Skill propulsion rule is silent when no transition is satisfied because stage work is outstanding

package.json mode: no loose-specifier warning for a range push ships as the exact installed version

extension fmt (and any command) creates or rewrites deno.lock when the extension lives in the repo's loaded extensions/ dir

serve shutdown does not wait for worker status writes, and its listener accepts workers after the gateway is disposed

stagecraft: rename work mode `method` to `behavior`, matching swamp's rename of models to behaviors

auth token create --json fields key and signinToken are undocumented; no token-mode service setup page

trigger.schedule is evaluated in the serve host's local time zone, with no zone field and no doc saying so

workflow validate/run say "Workflow not found" for a file that doctor workflows explains is misnamed

telemetry stats says "No telemetry data found" right after successful sends; say the spool is empty because it flushed

Docs: publish typed-secrets Phase 4.6 expression and delivery semantics

Extension registry page: a supported way to include media (images) in the README

CEL: data.latest(...).version is a double, but data.version() only accepts int, so "version - 1" fails at run time

workflow resume --run refuses workflows with the same step name in two jobs, though validate and run accept them

Update public OpenTelemetry manual for remote waterfalls and execution metrics (#3786)

Server-driven warning and info messages to CLI users, targeted by swamp version (exploration)

Serve: delegate namespace-scoped extension pulls and reload without granting administrator access

workflow cancel --server ignores --ca-cert and SWAMP_CA_CERT

Preserve active worker execution across serve restarts and upgrades; reconnect and reattach dispatches

v3: chunk durability barrier costs a full drive-cache flush per command on macOS; use an ordering barrier

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#3918 stagecraft remote studio: one long-lived connection to serve instead of a swamp process per read

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