perf(llm): enable OpenCode prompt cache keys

[shunkakinoki]

Summary

• enable OpenCode setCacheKey for both remote and local CLIProxy providers
• regenerate the checked-in OpenCode config
• add regression coverage for both provider blocks

Validation

• shellspec spec/llm_update_spec.sh — 80 examples, 0 failures
• git diff --check
• make build reached Nix evaluation but was stopped after sustained shared /nix/var/nix/db/db.sqlite contention; no configuration error was reported

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Summary by cubic

Enable stable prompt cache keys in OpenCode for both remote and local CLIProxyAPI providers to improve cache hits and reduce latency. Regenerated the checked-in config and added a regression spec to ensure setCacheKey stays enabled.

^{Written for commit 4b84c2a. Summary will update on new commits.}

[indent-zero]

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PR Summary

Enables OpenCode's session-scoped promptCacheKey on both @ai-sdk/openai-compatible CLIProxy providers so that repeated turns within an OpenCode session can hit upstream prompt caches (primarily the GPT-5/Codex route through CLIProxy). Also lands a matching shellspec assertion so scripts/llm-update.sh regeneration keeps the flag in place.

• config/opencode/opencode.jsonc: adds "setCacheKey": true to the shunkakinoki (remote CLIProxy) and cliproxyapi (local CLIProxy) options blocks.
• config/opencode/opencode.tpl.jsonc: mirrors the same additions in the template so regeneration stays in sync.
• spec/llm_update_spec.sh: adds an It 'enables stable prompt cache keys for both CLIProxy providers' case that greps for the flag inside each provider range of the generated file.

Issues

No issues found.

CI Checks

Waiting for CI checks...

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 6f5cb144-3c25-45ef-95ec-0f73e3ea58b1

📥 Commits

Reviewing files that changed from the base of the PR and between d2f3ed0 and 4b84c2a.

📒 Files selected for processing (3)

• config/opencode/opencode.jsonc
• config/opencode/opencode.tpl.jsonc
• spec/llm_update_spec.sh

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📝 Walkthrough

Summary by CodeRabbit

• New Features

  • Enabled stable prompt cache keys for local and remote CLIProxy providers, improving cache consistency and response efficiency.

• Tests

  • Added coverage to verify cache key settings for both configured providers.

Walkthrough

The OpenCode remote and local CLIProxy providers now enable setCacheKey: true. A runtime specification verifies this setting for both providers.

Changes

OpenCode cache-key configuration

Layer / File(s)	Summary
Enable provider cache keys config/opencode/opencode.jsonc, config/opencode/opencode.tpl.jsonc	Both CLIProxy provider definitions set setCacheKey to true while retaining their API key settings.
Validate cache-key settings spec/llm_update_spec.sh	The runtime fallback test checks setCacheKey: true for both providers.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• shunkakinoki/dotfiles#463: Both changes modify OpenCode CLIProxyAPI provider configuration.

Poem

A rabbit hops through config bright,
Two cache keys bloom in lines of light.
Remote and local now agree,
Tests check the setting faithfully.
setCacheKey twinkles true—
Hop, hop, the cache comes through!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes enabling OpenCode prompt cache keys, which is the main change.
Description check	✅ Passed	The description accurately covers the configuration changes, regenerated config, regression coverage, and validation results.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/opencode-prompt-cache-key

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