feat(go-opencode): Add WebFetch tool for fetching web content #56
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Port the WebFetch tool from TypeScript to Go OpenCode. The tool fetches content from URLs and returns it in the requested format (text, markdown, or html). Key features: - URL validation (must start with http:// or https://) - Configurable timeout (max 120 seconds, default 30) - Response size limit (5MB max) - HTML to Markdown conversion using html-to-markdown library - HTML to plain text extraction using goquery (strips scripts, styles) - Accept headers based on requested format - User-Agent spoofing to avoid blocking Dependencies added: - github.com/JohannesKaufmann/html-to-markdown v1.6.0 - github.com/PuerkitoBio/goquery v1.10.0
Move SubagentExecutor from internal/tool to internal/executor to break the import cycle between tool and session packages. The cycle was: - tool/subagent_executor.go imported session - session/processor.go imported tool Now: - tool package no longer imports session - session package imports tool - executor package imports both tool and session This allows the tool package (including WebFetchTool) to build and test properly.
Document the package structure, dependencies, and design principles for go-opencode. Includes: - ASCII dependency graph - Package descriptions for all 18 internal packages - Public API and command packages - Dependency statistics and hub packages - Key design principles - External dependency list
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Port the WebFetch tool from TypeScript to Go OpenCode. The tool fetches
content from URLs and returns it in the requested format (text, markdown,
or html).
Key features:
Dependencies added: