chore(core,webapp): remove dead v3 socket message catalogs and MarQS env vars

After confirming no cross-repo consumers (infra/cloud/compute), remove the now-dead
v3 socket message catalogs from @trigger.dev/core (coordinator/provider/shared-queue/
prod-worker + the legacy background-worker websocket catalogs) and the unreferenced
MarQS / shared-queue-consumer environment variables from the webapp. Keeps the v4 IPC
catalogs, ServerBackgroundWorker, and the still-used CHECKPOINT_THRESHOLD_IN_MS.

Author: ericallam

apps/webapp/app/env.server.ts

@@ -612,7 +612,6 @@ const EnvironmentSchema = z
     // log-only mode before enforcement.
     DEPRECATE_V3_CLI_DEPLOYS_ENABLED: z.string().default("0"),
 
-
     // Verify the deploy image exists before promoting. Disable for out-of-band/air-gapped push. ECR only.
     DEPLOY_IMAGE_VERIFICATION_ENABLED: BoolEnv.default(true),
 
@@ -646,11 +645,6 @@ const EnvironmentSchema = z
     EVENTS_MEMORY_PRESSURE_THRESHOLD: z.coerce.number().int().default(5000),
     EVENTS_LOAD_SHEDDING_THRESHOLD: z.coerce.number().int().default(100000),
     EVENTS_LOAD_SHEDDING_ENABLED: z.string().default("1"),
-    SHARED_QUEUE_CONSUMER_POOL_SIZE: z.coerce.number().int().default(10),
-    SHARED_QUEUE_CONSUMER_INTERVAL_MS: z.coerce.number().int().default(100),
-    SHARED_QUEUE_CONSUMER_NEXT_TICK_INTERVAL_MS: z.coerce.number().int().default(100),
-    SHARED_QUEUE_CONSUMER_EMIT_RESUME_DEPENDENCY_TIMEOUT_MS: z.coerce.number().int().default(1000),
-    SHARED_QUEUE_CONSUMER_RESOLVE_PAYLOADS_BATCH_SIZE: z.coerce.number().int().default(25),
 
     MANAGED_WORKER_SECRET: z.string().default("managed-secret"),
 
@@ -770,49 +764,9 @@ const EnvironmentSchema = z
 
     LOOPS_API_KEY: z.string().optional(),
     ATTIO_API_KEY: z.string().optional(),
-    MARQS_DISABLE_REBALANCING: BoolEnv.default(false),
-    MARQS_VISIBILITY_TIMEOUT_MS: z.coerce
-      .number()
-      .int()
-      .default(60 * 1000 * 15),
-    MARQS_SHARED_QUEUE_LIMIT: z.coerce.number().int().default(1000),
-    MARQS_MAXIMUM_QUEUE_PER_ENV_COUNT: z.coerce.number().int().default(50),
-    MARQS_DEV_QUEUE_LIMIT: z.coerce.number().int().default(1000),
-    MARQS_MAXIMUM_NACK_COUNT: z.coerce.number().int().default(64),
-    MARQS_CONCURRENCY_LIMIT_BIAS: z.coerce.number().default(0.75),
-    MARQS_AVAILABLE_CAPACITY_BIAS: z.coerce.number().default(0.3),
-    MARQS_QUEUE_AGE_RANDOMIZATION_BIAS: z.coerce.number().default(0.25),
-    MARQS_REUSE_SNAPSHOT_COUNT: z.coerce.number().int().default(0),
-    MARQS_MAXIMUM_ENV_COUNT: z.coerce.number().int().optional(),
-    MARQS_SHARED_WORKER_QUEUE_CONSUMER_INTERVAL_MS: z.coerce.number().int().default(250),
-    MARQS_SHARED_WORKER_QUEUE_MAX_MESSAGE_COUNT: z.coerce.number().int().default(10),
-
-    MARQS_SHARED_WORKER_QUEUE_EAGER_DEQUEUE_ENABLED: z.string().default("0"),
-    MARQS_WORKER_ENABLED: z.string().default("0"),
-    MARQS_WORKER_COUNT: z.coerce.number().int().default(2),
-    MARQS_WORKER_CONCURRENCY_LIMIT: z.coerce.number().int().default(50),
-    MARQS_WORKER_CONCURRENCY_TASKS_PER_WORKER: z.coerce.number().int().default(5),
-    MARQS_WORKER_POLL_INTERVAL_MS: z.coerce.number().int().default(100),
-    MARQS_WORKER_IMMEDIATE_POLL_INTERVAL_MS: z.coerce.number().int().default(100),
-    MARQS_WORKER_SHUTDOWN_TIMEOUT_MS: z.coerce.number().int().default(60_000),
-    MARQS_SHARED_WORKER_QUEUE_COOLOFF_COUNT_THRESHOLD: z.coerce.number().int().default(10),
-    MARQS_SHARED_WORKER_QUEUE_COOLOFF_PERIOD_MS: z.coerce.number().int().default(5_000),
 
     PROD_TASK_HEARTBEAT_INTERVAL_MS: z.coerce.number().int().optional(),
 
-    V2_MARQS_ENABLED: z.string().default("0"),
-    V2_MARQS_CONSUMER_POOL_ENABLED: z.string().default("0"),
-    V2_MARQS_CONSUMER_POOL_SIZE: z.coerce.number().int().default(10),
-    V2_MARQS_CONSUMER_POLL_INTERVAL_MS: z.coerce.number().int().default(1000),
-    V2_MARQS_QUEUE_SELECTION_COUNT: z.coerce.number().int().default(36),
-    V2_MARQS_VISIBILITY_TIMEOUT_MS: z.coerce
-      .number()
-      .int()
-      .default(60 * 1000 * 15),
-    V2_MARQS_DEFAULT_ENV_CONCURRENCY: z.coerce.number().int().default(100),
-    V2_MARQS_VERBOSE: z.string().default("0"),
-    V3_MARQS_CONCURRENCY_MONITOR_ENABLED: z.string().default("0"),
-    V2_MARQS_CONCURRENCY_MONITOR_ENABLED: z.string().default("0"),
     /* Usage settings */
     USAGE_EVENT_URL: z.string().optional(),
     PROD_USAGE_HEARTBEAT_INTERVAL_MS: z.coerce.number().int().optional(),