[docs] docs: unbloat troubleshooting common issues

[github-actions]

Summary

Consolidates and clarifies the troubleshooting content in docs/src/content/docs/troubleshooting/common-issues.md. Redundant sections covering GitHub toolsets and OpenCode MCP configuration are merged, and duplicate/verbose guidance is trimmed while preserving the underlying instructions.

Change Classification

• Type: docs
• Scope: docs/troubleshooting
• Breaking: No

Key Changes

File	Change	Impact
docs/src/content/docs/troubleshooting/common-issues.md	Merged "Toolset Missing Expected Tools" into "GitHub Tools Not Available"; clarified MCP server connection failure guidance; rewrote OpenCode MCP tools section to state OpenCode does not auto-discover MCP servers and consolidated proxy/config guidance; removed redundant network-issue subsection headers	Medium

Impact Assessment

• No downstream impact identified. Changes are documentation-only wording/structure edits with no configuration, API, or CLI behavior changes.

Commits

013921696 docs: unbloat common issues troubleshooting
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[github-actions]

✅ Test Quality Sentinel completed test quality analysis.

No test files were added or modified in this PR. Test Quality Sentinel skipped.

🧪 Test quality analysis by Test Quality Sentinel

[Copilot]

Pull request overview

Condenses common troubleshooting documentation while preserving actionable guidance, examples, and references.

Changes:

• Consolidates GitHub toolset troubleshooting.
• Removes repetition from OpenCode MCP guidance.
• Combines network troubleshooting subsections.

Show a summary per file

File	Description
docs/src/content/docs/troubleshooting/common-issues.md	Streamlines tool, OpenCode, and network troubleshooting guidance.

Review details

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[github-actions]

🎉 This pull request is included in a new release.

Release: v0.86.3