feat: simplify opencode prompt send

[i-am-thor]

Summary

• simplify the runner trigger success path to always return NDJSON starting with start
• remove the runner busy/status/wait flow and the gateway busy retry contract
• replace dynamic model limit loading with hardcoded limits for the supported OpenAI models and update tests/docs

Testing

• pnpm --filter @thor/runner typecheck
• pnpm --filter @thor/runner exec vitest run src/trigger.test.ts
• pnpm --filter @thor/gateway typecheck
• pnpm --filter @thor/gateway exec vitest run src/service.test.ts src/app.test.ts
• pnpm --filter @thor/common typecheck
• Unit Tests workflow
• Core E2E workflow

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[Copilot]

Pull request overview

This PR simplifies Thor’s Runner /trigger contract and Gateway dispatch flow by removing the “busy/status/wait” retry mechanism and standardizing successful trigger responses to NDJSON (always starting with a start event). It also replaces dynamic model context-limit loading with a hardcoded model-limit table for supported OpenAI models, updating tests and documentation accordingly.

Changes:

• Runner: remove session status() busy check + abort settle wait; always return application/x-ndjson on success (one-line start when stream=false, full stream to done when stream=true).
• Gateway: drop { busy: true } handling and stop parsing successful runner bodies; simplify TriggerResult to { rejected: true|false }.
• Runner: replace provider-based model limit fetching/caching with a constant MODEL_CONTEXT_LIMITS map and update trigger tests.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/runner/src/index.ts	Simplifies /trigger orchestration, unifies successful responses to NDJSON, removes busy/status/wait flow, and switches to constant model context limits.
packages/runner/src/trigger.test.ts	Updates trigger harness/tests to assert NDJSON start receipt, no status checks, interrupt behavior, and new model-limit expectations.
packages/runner/src/event-bus.ts	Removes waitForSessionSettled helper now unused after abort-settle logic removal.
packages/runner/src/event-bus.test.ts	Removes unit tests for waitForSessionSettled and updates imports/fixtures accordingly.
packages/gateway/src/service.ts	Simplifies runner trigger result contract; drops success-body parsing and {busy:true} retry behavior.
packages/gateway/src/service.test.ts	Updates gateway tests to treat any 2xx runner response as accepted and removes {busy:true} fixtures.
packages/gateway/src/app.ts	Removes “busy” outcome logging/branching; treats only rejected vs fired outcomes.
packages/gateway/src/app.test.ts	Updates gateway integration tests to reflect new runner response behavior and retry-on-5xx.
packages/gateway/src/queue.ts	Updates queue docs/comments to describe retryable failures rather than “runner busy”.
packages/gateway/src/queue.test.ts	Updates test comment to reflect deferred retry semantics.
packages/common/src/service-env.ts	Removes ABORT_TIMEOUT runner env since abort-settle waiting is removed.
docs/plan/2026052702_simplify-opencode-prompt-send.md	Adds/updates the design plan documenting the new NDJSON contract and simplified control flow.
AGENTS.md	Adds contributor guidance to keep MODEL_CONTEXT_LIMITS aligned with OpenCode model config changes.

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[i-am-thor]

Addressed in 1017aa2: the gateway now best-effort cancels successful runner response bodies before returning, and I added a service test covering the cancel path.

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[Copilot]

Pull request overview

Copilot reviewed 13 out of 13 changed files in this pull request and generated 1 comment.

[i-am-thor]

Updated in 57f6421: the plan now references the public upstream source at https://github.com/anomalyco/opencode instead of the local absolute path.

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[daohoangson]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Resolved in commit fix: resolve merge conflicts with main branch.

The four conflicting files were resolved as follows:

• runner/src/index.ts and runner/src/event-bus.test.ts: kept our branch's removal of waitForSessionSettled and aligned the import extension to .ts (matching main's convention).
• runner/src/trigger.test.ts: imported a new labels python3 bash wrappers test from main (with an unused correlation key), kept our simplified interrupt/busy tests, and dropped the old providerList-based tests that no longer apply after replacing dynamic model-limit loading with the hardcoded table.
• gateway/src/service.test.ts: kept our NDJSON start-event mock response and updated the dynamic import extension to .ts.

[daohoangson]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Resolved in commit 98d5d2e. The only conflict was in packages/gateway/src/queue.ts — a comment in the EventHandler type doc where main used "runner busy" and our branch used "retryable runner failure". Kept our branch's wording since this PR removes the busy concept.