feat(web): list the agent session MCP tools in settings

[JeremyFunk]

The MCP settings page's Available Tools list is hardcoded, so the agent tools shipped in #867 and #876 never appeared there even though they are live on api.maple.dev/mcp.

Adds them to the list:

• list_agent_sessions
• get_agent_session
• get_agent_tools_overview
• get_agent_tool_error

The list is still hand-maintained and lags the registry elsewhere too (~19 of ~70 tools, and system_health no longer exists); sourcing it from the server is a follow-up.

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Summary by CodeRabbit

• New Features
  • Added tools for viewing AI agent sessions, including verdicts, findings, timing, costs, and token usage.
  • Added agent tool usage analytics, including call counts, failure rates, and latency comparisons.
  • Added investigation details for grouped tool failures, message variations, related sessions, and sample calls.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: f02876ff-b8c0-40d4-8c26-4a6aa86ae039

📥 Commits

Reviewing files that changed from the base of the PR and between 2d8a382 and ada6343.

📒 Files selected for processing (1)

• apps/web/src/components/mcp/mcp-tools-list.tsx

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📝 Walkthrough

Walkthrough

The MCP tool list now includes four AI-agent tool definitions for session data, tool metrics, and tool error investigation.

Changes

AI agent MCP tools

Layer / File(s)	Summary
Add AI agent tool definitions apps/web/src/components/mcp/mcp-tools-list.tsx	Adds list_agent_sessions, get_agent_session, get_agent_tools_overview, and get_agent_tool_error to the local MCP_TOOLS array.

Priority: ⬇️ Low

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

Change: Feature

Merge Risk: ⚪ Minimal · up to ada63

This change accurately adds the four MCP tools to the UI list and is ready to merge.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: adding agent session MCP tools to the web settings list.
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.

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/web-mcp-agent-tools-list

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