feat: support Platform API 1.150 features (cron actions)

[cristianrcv]

Summary

Exposes the scheduled (cron) action source introduced in Platform API 1.150.0.

This is one PR in a stack that catches tw up with Platform API 1.230.0, one PR per API version that introduced the features. Each PR adds the items whose API elements all exist in that version.

• Stack: master → 1.101 → 1.113 → 1.145 → 1.150 → 1.167 → 1.190 → 1.200 → 1.230. This PR is based on the API 1.145 PR; the next one is the API 1.167 PR.
• SDK: unchanged. tw stays on tower-java-sdk 1.200.0, which already contains every API element used here. The last PR in the stack bumps it to 1.230.0.

Changes

• feat(actions): add and update cron (scheduled) actions (d556d81)
• docs: document the cron action source added for API 1.150 (92d63cf)
• build(native): register reflection metadata for the cron action command (983d8d7)

Verification

• ./gradlew test: 869 tests, 0 failures. Every new command and option has MockServer tests that assert the request (method, path, query, body) and the output.
• Each item was checked against the OpenAPI spec of this version and the previous one (tower-sdk-gencode history) to confirm where it first appears.
• CI runs the full suite against the native binary on Linux, macOS and Windows.

🤖 Generated with Claude Code

[educalleja]

Usage of the new commands

This PR adds one new command, tw actions add cron, and two new options for tw actions update. Together they let you create and edit pipeline actions that run on a recurring schedule.

1. tw actions add cron (new)

Adds a pipeline action that runs on a recurring schedule.

Option	Description
--cron-expression	The schedule, as a standard 5-field cron expression, such as '0 2 * * *' (required)
--timezone	IANA timezone the schedule runs in, such as Europe/London. Default: UTC

It also takes the options every tw actions add source shares:

Option	Description
-n, --name	Action name (required)
--pipeline	Pipeline to launch (required)
-w, --workspace	Workspace
--overwrite	Overwrite the action if it already exists
Labels and launch options	The same as for the other tw actions add sources

Example:

tw actions add cron -n nightly --pipeline https://github.com/nextflow-io/hello \
  --cron-expression '0 2 * * *' --timezone Europe/London

2. tw actions update: new cron options

Option	Description
--cron-expression	New schedule for a cron action, as a standard 5-field cron expression
--timezone	New IANA timezone for a cron action's schedule

• These options only work on cron actions. Using them on another kind of action fails with: "Options --cron-expression and --timezone apply only to cron actions, but action '<name>' is a <source> action".

Changes to existing output

• tw actions view shows Cron expression, Timezone and Next execution for cron actions.
• tw actions list handles cron actions, which have no endpoint.

USAGE.md

The PR changes the bullet tw actions add bucket to tw actions add cron|bucket in the list of commands added for newer API versions. It adds no new example.

🤖 Generated with Claude Code

[cristianrcv]

Superseded by #703 (actions). This PR only added cron actions, which are now grouped with the other action sources, so there's no separate 1.150 PR.

The stack is now: #685 (1.101) → #686 (1.113) → #697 (1.145) → #698 (1.167) → #699 (1.190) → #700 (1.200) → #701 (1.230) → #702 (agents) → #703 (actions). The code at the top of the stack is identical to the old one; only the grouping changed. Agents and actions changes are grouped into one PR each instead of being spread across API versions. New branches were used instead of force-pushing.