Greptile Overview

Greptile Summary

This PR successfully addresses two related configuration issues with clean, well-tested implementations.

Issue #472: Agent Model Override Precedence

• Filters OpenCode's config.agent to exclude agents already defined in builtinAgents
• Ensures user overrides in pluginConfig.agents take precedence over OpenCode's defaults
• Correctly handles both Sisyphus-enabled and disabled configurations
• Test coverage validates precedence in various scenarios including custom agents

Issue #525: Conditional Google Auth Loading

• Introduces willHaveGeminiAgents() utility that predicts if Gemini agents will be active without building all agents
• Only loads Google auth plugin when: (1) google_auth !== false AND (2) at least one Gemini agent is active
• Prevents unnecessary OAuth prompts when users disable/override all Gemini agents
• Comprehensive edge case handling: disabled agents, model overrides, and non-default Gemini usage

Code Quality

• All changes follow TDD principles with tests written first (RED-GREEN-REFACTOR)
• 16 new test cases provide thorough coverage of edge cases
• Enhanced debug logging aids troubleshooting without functional changes
• Clean integration across multiple files with proper exports and imports

Confidence Score: 5/5

• This PR is safe to merge with high confidence - well-tested bug fixes with no breaking changes
• Perfect score based on: (1) No logic errors found after exhaustive analysis, (2) Comprehensive test coverage with 16 test cases covering edge cases, (3) Clean implementation following project's TDD guidelines, (4) Changes are backwards-compatible and defensive, (5) Clear documentation and debug improvements
• No files require special attention - all changes are well-implemented

Important Files Changed

File Analysis

Sequence Diagram

sequenceDiagram
    participant Plugin as oh-my-opencode Plugin
    participant Utils as agents/utils
    participant ConfigHandler as config-handler
    participant Index as index.ts
    participant AuthPlugin as antigravity/plugin
    
    Note over Plugin,AuthPlugin: Plugin Initialization

    Plugin->>Utils: willHaveGeminiAgents(disabledAgents, agentOverrides)
    Utils->>Utils: Check GEMINI_AGENTS against config
    Utils->>Utils: Check if any default Gemini agents active
    Utils->>Utils: Check if any agent overridden to Gemini
    Utils-->>Plugin: hasActiveGeminiAgents = true/false
    
    alt hasActiveGeminiAgents && google_auth !== false
        Plugin->>AuthPlugin: createGoogleAntigravityAuthPlugin(ctx)
        AuthPlugin-->>Plugin: googleAuthHooks
        Note over Plugin: Google auth available
    else
        Note over Plugin: Skip Google auth (no Gemini agents)
    end
    
    Note over Plugin,ConfigHandler: Config Processing
    
    Plugin->>ConfigHandler: configHandler(openCodeConfig)
    ConfigHandler->>Utils: createBuiltinAgents(disabled, overrides, ...)
    Utils-->>ConfigHandler: builtinAgents
    
    ConfigHandler->>ConfigHandler: Filter openCodeConfig.agent<br/>to exclude builtinAgent keys
    ConfigHandler->>ConfigHandler: Merge: builtinAgents → userAgents →<br/>pluginAgents → filteredOpenCodeAgents
    
    Note over ConfigHandler: oh-my-opencode agents<br/>take precedence over<br/>OpenCode defaults
    
    ConfigHandler-->>Plugin: Updated config with correct precedence

3 issues found across 8 files

Confidence score: 3/5

• Gemini agents defined outside pluginConfig bypass the new Google auth gating in src/index.ts, so unauthorized Gemini usage is likely and should be resolved before merging.
• keywordDetectorDisabled now defaulting to undefined in src/index.ts means users who opted out of the keyword detector get it re-enabled, which is a regression in user configuration behavior.
• Pay close attention to src/index.ts and src/agents/utils.test.ts – the former has gating/config regressions and the latter has an incorrect comment that can mislead future maintenance.

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="src/agents/utils.test.ts">

<violation number="1" location="src/agents/utils.test.ts:210">
P2: Misleading comment contradicts the test code. The `#given` comment says "only multimodal-looker disabled" but the code actually disables `frontend-ui-ux-engineer` and `document-writer`, leaving `multimodal-looker` enabled.</violation>
</file>

<file name="src/index.ts">

<violation number="1" location="src/index.ts:263">
P1: Google auth gating only looks at pluginConfig overrides even though config-handler later merges user/project/plugin agents that may use Gemini models, so Gemini agents defined outside pluginConfig run without the required auth plugin and cannot authenticate.</violation>

<violation number="2" location="src/index.ts:273">
P2: Unintentional removal of `keywordDetectorDisabled` breaks user config. When users disable the `keyword-detector` hook, keyword detection in `claudeCodeHooks` will still run because this option now defaults to `undefined` (falsy), causing `!config.keywordDetectorDisabled` to be `true` in the claude-code-hooks implementation.</violation>
</file>

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