chore: release v4.5.0-rc.4 (#3788)

## Summary
1 new feature, 5 improvements.

## Highlights

- Mollifier `mutateSnapshot` now enforces a tag cap: an `append_tags`
patch carrying `maxTags` returns `"limit_exceeded"` (writing nothing)
when the deduped tag count would exceed the limit, so a buffered run
can't accumulate more tags via the tags API than the trigger validator
allows at creation.
([#3756](#3756))

## Improvements
- Mollifier buffer extensions: idempotency dedup, an atomic
`mutateSnapshot` API, metadata CAS, claim primitives, and a
`MollifierSnapshot` type. The buffer's Redis client now reconnects with
jittered backoff so a fleet of clients doesn't stampede Redis in
lockstep after a blip.
([#3752](#3752))
- Add `onTerminalFailure` callback to `MollifierDrainerOptions` so the
customer's run lands a SYSTEM_FAILURE PG row even when the drainer
exhausts `maxAttempts` on a retryable PG error. Previously,
retryable-error exhaustion called `buffer.fail()` directly, which
atomically marks FAILED + DELs the entry hash with no PG write — silent
data loss when PG was unreachable across the full retry budget. The
callback fires before `buffer.fail()` on any terminal path (`cause:
"non-retryable"` or `"max-attempts-exhausted"`); throwing a retryable
error from the callback causes the drainer to requeue rather than fail.
([#3754](#3754))
- Bump `@s2-dev/streamstore` to `0.22.10` to fix a
`TASK_RUN_UNCAUGHT_EXCEPTION` ("Invalid state: Unable to enqueue") when
a `chat.agent` turn is aborted mid-stream.
([#3792](#3792))
- Coerce numeric `concurrencyKey` values to string at the API boundary
across `tasks.trigger`, `tasks.batchTrigger`, and the Phase-2 streaming
batch endpoint.
([#3789](#3789))
- Add a `tools` option to `chat.agent`. Declaring your tools here
threads them into the SDK's internal `convertToModelMessages`, so each
tool's `toModelOutput` is re-applied when prior-turn history is
re-converted.
([#3790](#3790))

<details>
<summary>Raw changeset output</summary>

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`main` is currently in **pre mode** so this branch has prereleases
rather than normal releases. If you want to exit prereleases, run
`changeset pre exit` on `main`.

⚠️⚠️⚠️⚠️⚠️⚠️

# Releases
## @trigger.dev/redis-worker@4.5.0-rc.4

### Minor Changes

- Mollifier buffer extensions: idempotency dedup, an atomic
`mutateSnapshot` API, metadata CAS, claim primitives, and a
`MollifierSnapshot` type. The buffer's Redis client now reconnects with
jittered backoff so a fleet of clients doesn't stampede Redis in
lockstep after a blip.
([#3752](#3752))
- Add `onTerminalFailure` callback to `MollifierDrainerOptions` so the
customer's run lands a SYSTEM_FAILURE PG row even when the drainer
exhausts `maxAttempts` on a retryable PG error. Previously,
retryable-error exhaustion called `buffer.fail()` directly, which
atomically marks FAILED + DELs the entry hash with no PG write — silent
data loss when PG was unreachable across the full retry budget. The
callback fires before `buffer.fail()` on any terminal path (`cause:
"non-retryable"` or `"max-attempts-exhausted"`); throwing a retryable
error from the callback causes the drainer to requeue rather than fail.
([#3754](#3754))

### Patch Changes

- Pipeline the per-entry `HGETALL` fetches in
`MollifierBuffer.listEntriesForEnv`. The previous serial implementation
issued one Redis round-trip per runId returned by `LRANGE`, which
dominated stale-sweep wall-time at any meaningful backlog (at the
sweep's default maxCount=1000, this is ~1000 RTTs per env per pass).
Behaviour is unchanged — entries are still skipped when the entry hash
has been torn down by a concurrent drainer ack/fail between the LRANGE
and the HGETALL.
([#3752](#3752))
- Mollifier `mutateSnapshot` now enforces a tag cap: an `append_tags`
patch carrying `maxTags` returns `"limit_exceeded"` (writing nothing)
when the deduped tag count would exceed the limit, so a buffered run
can't accumulate more tags via the tags API than the trigger validator
allows at creation.
([#3756](#3756))
-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`

## @trigger.dev/build@4.5.0-rc.4

### Patch Changes

-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`

## trigger.dev@4.5.0-rc.4

### Patch Changes

- Bump `@s2-dev/streamstore` to `0.22.10` to fix a
`TASK_RUN_UNCAUGHT_EXCEPTION` ("Invalid state: Unable to enqueue") when
a `chat.agent` turn is aborted mid-stream.
([#3792](#3792))
-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`
    -   `@trigger.dev/build@4.5.0-rc.4`
    -   `@trigger.dev/schema-to-json@4.5.0-rc.4`

## @trigger.dev/core@4.5.0-rc.4

### Patch Changes

- Coerce numeric `concurrencyKey` values to string at the API boundary
across `tasks.trigger`, `tasks.batchTrigger`, and the Phase-2 streaming
batch endpoint.
([#3789](#3789))
- Bump `@s2-dev/streamstore` to `0.22.10` to fix a
`TASK_RUN_UNCAUGHT_EXCEPTION` ("Invalid state: Unable to enqueue") when
a `chat.agent` turn is aborted mid-stream.
([#3792](#3792))

## @trigger.dev/plugins@4.5.0-rc.4

### Patch Changes

-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`

## @trigger.dev/python@4.5.0-rc.4

### Patch Changes

-   Updated dependencies:
    -   `@trigger.dev/sdk@4.5.0-rc.4`
    -   `@trigger.dev/core@4.5.0-rc.4`
    -   `@trigger.dev/build@4.5.0-rc.4`

## @trigger.dev/react-hooks@4.5.0-rc.4

### Patch Changes

-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`

## @trigger.dev/rsc@4.5.0-rc.4

### Patch Changes

-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`

## @trigger.dev/schema-to-json@4.5.0-rc.4

### Patch Changes

-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`

## @trigger.dev/sdk@4.5.0-rc.4

### Patch Changes

- Add a `tools` option to `chat.agent`. Declaring your tools here
threads them into the SDK's internal `convertToModelMessages`, so each
tool's `toModelOutput` is re-applied when prior-turn history is
re-converted.
([#3790](#3790))

    ```ts
    chat.agent({
      tools: { readFile, search },
      run: async ({ messages, tools, signal }) =>
        streamText({ model, messages, tools, abortSignal: signal }),
    });
    ```

Also exports `InferChatUIMessageFromTools<typeof tools>` to derive the
chat `UIMessage` type (typed tool parts) directly from a tool set.

-   Updated dependencies:
    -   `@trigger.dev/core@4.5.0-rc.4`

</details>

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

.changeset/pre.json

@@ -25,22 +25,29 @@
     "bundle-skills-single-pass",
     "cap-idempotency-key-length",
     "chat-agent-on-boot-hook",
+    "chat-agent-tools",
     "chat-agent",
     "chat-history-read-primitives",
     "chat-session-attributes",
     "chat-slim-wire-merge",
     "chat-start-session-action-typed-client-data",
     "cli-deploy-skip-rewrite-timestamp",
+    "coerce-concurrency-key-to-string",
     "locals-key-dual-package-fix",
     "mcp-agent-chat-sessions",
     "mcp-list-runs-region",
     "mock-chat-agent-test-harness",
+    "mollifier-buffer-extensions",
+    "mollifier-buffer-pipeline-list-entries",
+    "mollifier-drainer-terminal-failure-callback",
     "mollifier-redis-worker-primitives",
+    "mollifier-tag-cap",
     "plugin-auth-path",
     "resource-catalog-runtime-registration",
     "retry-middleware-errors",
     "retry-sigsegv",
     "runs-list-region-filter",
+    "s2-batch-transform-linger-fix",
     "sessions-primitive",
     "trigger-client",
     "unflatten-attributes-conflict",

.server-changes/bump-slack-web-api-axios.md

@@ -2,8 +2,8 @@ apiVersion: v2
 name: trigger
 description: The official Trigger.dev Helm chart
 type: application
-version: 4.5.0-rc.3
-appVersion: v4.5.0-rc.3
+version: 4.5.0-rc.4
+appVersion: v4.5.0-rc.4
 home: https://trigger.dev
 sources:
   - https://github.com/triggerdotdev/trigger.dev

.server-changes/mollifier-dashboard.md

@@ -1,5 +1,12 @@
 # @trigger.dev/build
 
+## 4.5.0-rc.4
+
+### Patch Changes
+
+- Updated dependencies:
+  - `@trigger.dev/core@4.5.0-rc.4`
+
 ## 4.5.0-rc.3
 
 ### Patch Changes

.server-changes/mollifier-drainer-replay.md

@@ -1,6 +1,6 @@
 {
   "name": "@trigger.dev/build",
-  "version": "4.5.0-rc.3",
+  "version": "4.5.0-rc.4",
   "description": "trigger.dev build extensions",
   "license": "MIT",
   "publishConfig": {
@@ -78,7 +78,7 @@
   },
   "dependencies": {
     "@prisma/config": "^6.10.0",
-    "@trigger.dev/core": "workspace:4.5.0-rc.3",
+    "@trigger.dev/core": "workspace:4.5.0-rc.4",
     "mlly": "^1.7.1",
     "pkg-types": "^1.1.3",
     "resolve": "^1.22.8",