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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/3792))
- Coerce numeric `concurrencyKey` values to string at the API boundary
across `tasks.trigger`, `tasks.batchTrigger`, and the Phase-2 streaming
batch endpoint.
([#3789](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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`.

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# 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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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](https://github.com/triggerdotdev/trigger.dev/pull/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>

packages/python/CHANGELOG.md

@@ -1,5 +1,14 @@
 # @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`
+
 ## 4.5.0-rc.3
 
 ### Patch Changes

packages/python/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@trigger.dev/python",
-  "version": "4.5.0-rc.3",
+  "version": "4.5.0-rc.4",
   "description": "Python runtime and build extension for Trigger.dev",
   "license": "MIT",
   "publishConfig": {
@@ -45,7 +45,7 @@
     "check-exports": "attw --pack ."
   },
   "dependencies": {
-    "@trigger.dev/core": "workspace:4.5.0-rc.3",
+    "@trigger.dev/core": "workspace:4.5.0-rc.4",
     "tinyexec": "^0.3.2"
   },
   "devDependencies": {
@@ -56,12 +56,12 @@
     "tsx": "4.17.0",
     "esbuild": "^0.23.0",
     "@arethetypeswrong/cli": "^0.15.4",
-    "@trigger.dev/build": "workspace:4.5.0-rc.3",
-    "@trigger.dev/sdk": "workspace:4.5.0-rc.3"
+    "@trigger.dev/build": "workspace:4.5.0-rc.4",
+    "@trigger.dev/sdk": "workspace:4.5.0-rc.4"
   },
   "peerDependencies": {
-    "@trigger.dev/sdk": "workspace:^4.5.0-rc.3",
-    "@trigger.dev/build": "workspace:^4.5.0-rc.3"
+    "@trigger.dev/sdk": "workspace:^4.5.0-rc.4",
+    "@trigger.dev/build": "workspace:^4.5.0-rc.4"
   },
   "engines": {
     "node": ">=18.20.0"