feat: migrate workflow-agents to Render SDK 1.0.0

[Ho1yShif]

Bumps @renderinc/sdk to 1.0.0 and migrates to the new task API.

API changes

• Every task handler takes a TaskContext as its first parameter.
• task() returns a { name, func } definition instead of a callable. Subtasks now run through ctx.run(definition, ...args).
• Retry config moved to retry: { maxRetries, waitDurationMs, backoffScaling }.

loader.ts needed the most work. Auto-discovery matched exported functions, which finds nothing now, so it checks for the definition shape instead. It also exports a localTaskContext whose run calls the target's func directly, which is how the in-process dev mode and the tests execute a workflow without a Render environment.

Also condenses the ASCII-box comment blocks to plain comments.

dev:workflows fix

npm run dev:workflows failed with start command exited before registering tasks. render workflows dev re-runs its start command for every task run, and the script pointed it at the gateway, which binds port 3000 on each of those runs. The start command is now the task-only entry (npm run start:workflow) and the gateway runs alongside it via scripts/dev-workflows.sh, reaching the task server over RENDER_LOCAL_DEV_URL.

This is independent of the SDK bump. I could not tell whether it broke on a CLI upgrade or was already broken.

Docs mismatch

The workflows-defining preview docs list retries: { maxAttempts, initialDelaySeconds } and instanceType. Shipped 1.0.0 RegisterTaskOptions declares retry: { maxRetries, waitDurationMs, backoffScaling } and plan. I used the names that compile.

Verification

Typecheck passes. 55 of 56 tests pass, with the Redis-dependent queue test skipped as before.

Ran against the local task server in both gateway dispatch modes. The task-run graph confirms real subtask dispatch: security and performance start 1ms apart under the code-review parent, judge waits for both, and ux is correctly absent on a PR with no frontend files. Running ux directly with a CSS patch confirms it works under the new signature.

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