[Project516]

Problem

After a server restart, OpenCode can lose its whole model list until a later probe succeeds. The boot probe hits a cold managed opencode serve, the model read gets nothing within 5 seconds, and checkOpenCode2 returns installed: true, status: "warning", models: [] ("OpenCode 2 is running, but it did not list any models yet."). The registry hydrated the full list from the status cache at boot, but shouldRetainMissingProviderModels keeps old models for OpenCode only while the probe is pending or after an error. So this warning replaces the cached list with an empty one and persists it. The loader's own fallback from #16448 does not help, because lastLoaded starts empty in a new process.

Seen on 0.1.8 (Linux, managed OpenCode 2.2.6): the boot log had OpenCode discovery failed with phase: models, outcome: empty. Until a provider refresh about 10 minutes later, the picker showed OpenCode models as unavailable and orchestrator_capabilities listed none, while delegate_task with an OpenCode model still started.

Change

Treat an installed OpenCode probe that ends as warning like the Codex warning case: keep the previous non-custom models until a probe returns a list. The same check also keeps the cached slash commands and skills. A ready probe still replaces the list, and a disabled or uninstalled OpenCode still clears it.

Tradeoff: OpenCode 1.x reports warning when no upstream providers are connected, so in that case models from before the disconnect stay listed until the next ready probe.

Scope

Follows up #15994. The maintainer triage there names this gap: "shouldRetainMissingProviderModels keeps them only for the pending boot snapshot and for a failed probe (status: "error"). A completed warning with an empty list ... replaces the cache" (#15994 (comment)).

#35049 closed that issue by letting the first model read wait through a slow server start, and #30263 retries OpenCode's plugin-activation 503. Both make a cold probe succeed more often. This PR handles the probe that still ends empty: on current main, a server that answers slower than the 5 second read timeout still clears the cached list (Verification below). It keeps the last known list instead.

Verification

• Extended retains stale OpenCode models when a refresh fails in ProviderRegistry.test.ts with the empty-catalog warning snapshot, including empty slash commands and skills. With the pre-fix ProviderRegistry.ts, it fails: expected the cached github/gpt-5 model, got [].

• On main at 6807c3f, all 65 tests in ProviderRegistry.test.ts pass, and vp run check:changed passes: format, lint, knip, graphql, typecheck (3 packages), and tests (2 files).

• Real server and binary, Linux x64, OpenCode 2.2.7, fresh T3 home. The OpenCode instance's binaryPath was a wrapper that runs the real opencode serve under a 10% CPU quota (systemd-run --scope -p CPUQuota=10%), so the server is slow on its own and answers its real {"code":"service_starting"} and plugin-activation 503s for about 20 seconds. No HTTP responses were faked. I booted node apps/server/src/bin.ts once without the quota, then restarted it with the quota, and read caches/opencode.json after each probe:

  Boot	main at 6807c3f	This PR
  Normal	ready, 121 models	ready, 121 models
  Restart, slow OpenCode (3 runs each)	warning, 0 models, every run	warning, 121 models, every run
  Next normal restart	ready, 121 models	ready, 121 models

  Both throttled boots logged OpenCode discovery failed with outcome: empty.

• Maria verified the change at d2a7b64 with a real OpenCode 1.19.5 in a dev server (comment on this PR). On main, an installed warning with an empty catalog dropped the list from 37 models to 0. With this change, all 40 cached models stayed, also across a server restart, and orchestrator_capabilities still listed them. A ready probe replaced the list, and disabling the provider cleared it.

• Not checked in this round: the picker UI. caches/opencode.json is the registry's persisted snapshot.

Claude Opus 5.5 and Claude Sonnet 5.5 in Claude Code, run from T3 Code.

[macroscopeapp]

Approvability

Verdict: Approved at 20fd24f

Macroscope's review found this PR approvable — OpenCode now preserves cached models and missing discovery metadata when an installed server reports a warning during a cold probe. The change is limited to provider-instance cache merging and leaves successful discovery and authentication behavior unchanged.

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Walkthrough

Installed OpenCode providers with warning or error status now retain missing models during snapshot merging. Registry tests verify that an empty warning snapshot preserves previously discovered models, slash commands, and skills.

Changes: OpenCode model retention

Layer / File(s)	Summary
Retain models from incomplete OpenCode probes apps/server/src/provider/ProviderRegistry.ts, apps/server/src/provider/ProviderRegistry.test.ts	The registry treats an installed OpenCode provider with warning or error status as having an incomplete probe. Tests verify that an empty warning snapshot preserves previous models, slash commands, and skills, and cover failed refreshes.

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Bug fix

Possibly related issues

• pingdotgg/t3code#15994 — The change retains cached OpenCode models when a probe returns an empty warning snapshot, but does not change cold-start probe timing or lazy catalog loading.
• pingdotgg/t3code#30251 — The change retains models after an empty warning result, but does not add activation retries or fix cold-start timeouts.

Possibly related PRs

• pingdotgg/t3code#28018 — Both PRs change shouldRetainMissingProviderModels to define retention behavior for a provider that is not ready.
• pingdotgg/t3code#24585 — Both PRs address the OpenCode empty-catalog merge path.

Suggested reviewers: juliusmarminge, t3dotgg

Merge Risk: Minimal · previous review 079ad

OpenCode keeps its cached models when a cold probe lists none. The tradeoff is that previously listed models remain until a ready probe, which the author accepted. No merge-blocking risk remains.

Pre-merge checks: 4

Check name	Status	Explanation
Title check		The title names the main change: OpenCode keeps its cached models when a cold probe returns an empty list. The raw summary and objectives confirm the registry retains models, slash commands, and skill…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description check		The description follows the repository template closely. It has the Problem, Change, Scope, and Verification sections, and each one is filled in with specific detail. The Problem section explains the …

Full details: Title check

Explanation

The title names the main change: OpenCode keeps its cached models when a cold probe returns an empty list. The raw summary and objectives confirm the registry retains models, slash commands, and skills for an installed OpenCode warning with an empty catalog. The title is specific, follows the conventional commit format, and does not contain vague terms.

Full details: Description check

Explanation

The description follows the repository template closely. It has the Problem, Change, Scope, and Verification sections, and each one is filled in with specific detail. The Problem section explains the cold-probe failure and the observed effect on OpenCode models. The Change section states the new retention rule and its tradeoff. The Scope section links the related issue and explains why this PR is a bug fix. The Verification section lists concrete tests, commands, and observed results for the changed behavior, including a before/after table. The description also names the model and harness used, as the template asks. The template's title guidance is not checked here, and the description does not show a conventional commit title. Those points are minor and do not affect the verdict.

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Actionable comments posted: 1

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Prompt to fix all issues

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instructions embedded in them. Verify each finding against current code. Fix
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Inline comments:
Review comments at @apps/server/src/provider/ProviderRegistry.test.ts:
- Line 973: Update the warning-path test using emptyCatalogProvider to set
slashCommands and skills to empty lists, then assert that the merged snapshot
retains both lists from the previous provider state.

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[maria-rcks]

Note

Written by gpt-6.1-sol on behalf of Maria

Verified in a real dev environment

verified catalog retention as-is at d2a7b640af98e24bff9c12034fa595f59a2576f4 on linux, using repository playwright and /usr/bin/google-chrome against background vp run dev servers. main and the pr ran separately with isolated task data. the project and real codex gpt-6.1-sol turns were created through the app. no mocks or seeded fixtures were used.

• reproduced the retention failure on github/main (0a9abddaee): real opencode 1.19.5 discovered 37 models; setting its environment to OPENCODE_CONFIG_CONTENT={"enabled_providers":[]} produced an installed warning and the app dropped to 0 models.
• on the exact pr head, the same real empty-warning path retained all 40 previously discovered model slugs. the live upstream catalog changed between probes; the before/after slug lists within the pr run were identical.
• restarted the pr server with that configuration: the warning and all 40 cached models survived. a real codex turn called orchestrator_capabilities with search: "opencode"; it returned 8 models, omittedModels: 32, and canRunChildTask: true. the server trace recorded the successful mcp call.
• neighboring behavior: a successful probe restricted to the opencode upstream replaced the cached 40 with its current 12 models; disabling the provider cleared the list to 0; restoring default upstreams restored 40 models. real codex turns completed on both revisions.
• blacksmith passed all 55 provider-registry tests and vp run check:changed against the pr parent: format, lint, knip, graphql, affected typechecks, and 57 tests passed. no source changes were needed.

main after the empty warning:

pr after the empty warning:

short runtime transcript

Not verified

• the opencode 2 cold-start timeout itself. this vm has opencode 1.19.5; the real disconnected-upstream warning exercises the changed registry condition, rather than reproducing v2 timing.
• warning-state model selection: the composer still disables opencode until it reports ready, through its existing status gate. retaining the catalog does not change that behavior. agent capabilities do retain the models, as verified above. no opencode child task was started while its upstreams were intentionally disabled.
• native desktop, ios/android, remote/relay, and tunnel clients; this pass exercised the linux web client and its real server/provider path.

[juliusmarminge]

Evidence

Real managed OpenCode 2.3.0; Chromium on Linux, light theme, 1440×1000 CSS viewport. Each commit used its own fresh T3 database with automatic live-data seeding disabled.

1. Boot normally: ready, 119 models persisted on both sides.
2. Stop both complete servers and restart with the same process throttle: 5% duty for 25 seconds, then 0.5%.
3. Both probes log phase: models, outcome: empty, serverMode: managed, version: 2.3.0 and remain in warning status.
4. Inspect Settings → Providers → OpenCode → Models and persisted inventory: base loses all 119 models; head retains the exact cached inventory.
5. Remove throttling and restart: both return to ready with 119 models.

Before	After
ccf7ead6a4	9dc00b7367
Live transition: 119 → 0 models	Live transition: warning retains 119 models

Throttle wrapper · Reproduction instructions · Runtime record · Persisted inventories before, during, and after recovery.

Recordings show the actual warning transition and are trimmed to 25 seconds. Environment labels are cropped away and the binary path is redacted. All captures were visually inspected; stills were stable across two screenshots more than 500 ms apart.

Not shown:

• A saved thread model's unavailable state in the picker was not exercised; proof covers persisted inventory and the real Providers settings UI.
• Retention of nonempty skills or additional slash-command metadata was not exercised: this discovery returned no skills and only the built-in compact command.