fix(orchestrator): use vendored OpenCode endpoint detection

[NubsCarson]

Summary

• update the vendored OpenCode submodule to include elizaOS/opencode#3 / 5a58f5c endpoint detection
• parse Cerebras base URLs by hostname in the orchestrator OpenCode spawn config instead of matching arbitrary URL text
• remove the stale PR-number reference from the vendored OpenCode shim comments

Why

The orchestrator already prefers the vendored OpenCode shim before falling back to a globally installed or npm OpenCode binary. This keeps that path explicit and makes Cerebras detection general: actual Cerebras hosts such as api.cerebras.ai or gateway.cerebras.ai use the Cerebras provider, while unrelated proxy URLs that merely contain cerebras.ai in the path stay generic OpenAI-compatible or local config.

Related

• OpenCode source PR: fix(provider): detect configured Cerebras endpoints opencode#3

Validation

OpenCode vendored source:

• bunx prettier --write packages/opencode/src/provider/provider.ts packages/opencode/src/provider/transform.ts packages/opencode/test/provider/provider.test.ts packages/opencode/test/provider/transform.test.ts
• bun test --timeout 30000 test/provider/provider.test.ts test/provider/transform.test.ts -> 331 passed, 0 failed
• bun run typecheck was checked; current dev still has two baseline errors unrelated to this patch (OPENCODE_EXPERIMENTAL_OUTPUT_TOKEN_MAX flag typing and missing ../../src/project/with-instance in test/acp/event-subscription.test.ts)

Eliza orchestrator after merging latest origin/develop:

• git diff --check
• bunx vitest run __tests__/unit/opencode-spawn-config-auto-detect.test.ts __tests__/unit/acp-service.test.ts __tests__/unit/available-agents.test.ts -> 43 passed, 0 failed
• bun run typecheck && bun run build in plugins/plugin-agent-orchestrator -> passed

Notes

This PR is intentionally narrow: it keeps provider endpoint detection in URL parsing code and tests instead of adding prompt text, deployment-specific config, or substring/regex matching against arbitrary paths.

Greptile Summary

This PR tightens Cerebras endpoint detection in the orchestrator's OpenCode spawn config by replacing a regex URL-text match with a proper hostname check via the URL API, and bumps the vendored OpenCode submodule to 5a58f5cee which includes the same fix upstream.

• isCerebrasBaseUrl now parses the URL and checks only the hostname field (cerebras.ai or *.cerebras.ai), preventing false positives when cerebras.ai appears only in a URL path segment.
• Two new tests validate subdomain detection and the false-positive case; the stale vault-pointer test string is cleaned up.
• Shim comments in bin/opencode and bin/opencode.cmd drop the now-irrelevant PR number reference.

Confidence Score: 5/5

Safe to merge — targeted, well-tested narrowing of URL matching logic with no regressions on existing paths.

The only functional change is replacing a regex with a hostname-only check using the standard URL API, wrapped in a try/catch for invalid inputs. All pre-existing tests still pass and two new tests directly exercise the corrected behavior. The submodule bump and comment cleanups carry no runtime risk.

No files require special attention.

Important Files Changed

Filename	Overview
plugins/plugin-agent-orchestrator/src/services/opencode-config.ts	isCerebrasBaseUrl replaced regex with URL hostname parsing; handles invalid URLs via try/catch; logic is correct and more precise
plugins/plugin-agent-orchestrator/tests/unit/opencode-spawn-config-auto-detect.test.ts	Two new tests cover subdomain detection and false-positive prevention for path-only matches; vault test string cleaned up
plugins/plugin-agent-orchestrator/vendor/opencode	Submodule pointer bumped from 8a86b585c to 5a58f5cee to pull in elizaOS/opencode#3 endpoint detection
plugins/plugin-agent-orchestrator/bin/opencode	Shim comment updated to remove stale PR reference; functional behavior unchanged
plugins/plugin-agent-orchestrator/bin/opencode.cmd	Windows shim comment updated in parallel with bash shim; no functional change

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[buildOpencodeSpawnConfig] --> B{llmProvider == cloud?}
    B -- yes --> C[Return elizacloud config]
    B -- no --> D[isCerebrasBaseUrl customBaseUrl]
    D --> E{hostname == cerebras.ai or *.cerebras.ai?}
    E -- yes --> F[wantsCerebras = true]
    E -- no --> G{cerebrasApiKey set?}
    G -- yes --> F
    G -- no --> H{no customBaseUrl AND opencodeApiKey AND isCerebrasBaseUrl cerebrasBaseUrl?}
    H -- yes --> F
    H -- no --> I[wantsCerebras = false]
    F --> J{wantsCerebras AND any key or URL?}
    J -- yes --> K[Return cerebras config]
    J -- no --> L{localOptIn or customBaseUrl?}
    I --> L
    L -- yes --> M[Return eliza-local config]
    L -- no --> N{powerful model set?}
    N -- yes --> O[Return user opencode.json config]
    N -- no --> P[Return null]

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