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Sam Julien 946babfc8b docs: fill Pathfinder-identified gaps in shell-docs (backend, MAF/Mastra, reference, troubleshooting, shared-state) (#5306)
## Summary
Fills documentation gaps that Pathfinder (our docs-indexing /
gap-analysis system) flagged in `showcase/shell-docs` — new backend,
Microsoft Agent Framework / Mastra integration, reference-hook,
troubleshooting, and shared-state pages, plus accuracy corrections to
existing v1/v2 pages. 43 files, 6 by-area commits, rebased onto current
`main`.

## Corrections (source-verified across two review passes)
- **.NET MAF samples:** tool names now match the frontend (`Name =
"get_weather"` / `"step_progress"`) so the renderer/middleware actually
fire.
- **v1/v2 provider identity:** v2-specific examples (e.g.
`showDevConsole="auto"`) now use `<CopilotKitProvider>` — `<CopilotKit>`
exported from `@copilotkit/react-core/v2` is the v1 backward-compat
component, which has no `"auto"` mode.
- **Imports / snippets:** added missing `useRenderTool` / `z` /
`useAgent` imports + `"use client"`; removed a nonexistent
`mcpApps.serverId` field; fixed an off-by-2 code-highlight range.
- **API accuracy:** Express legacy factory is
`copilotRuntimeNodeExpressEndpoint`; v1 `useAgent` `runAgent` signature
+ `UseAgentProps` type name; `useRenderToolCall` falls back to the
default renderer (not `null`); `useComponent` also registers a tool; v1
`enableInspector` localhost/`0.0.0.0` default vs v2 `"auto"` nuance.
- **Nav / icons:** registered `lucide/Map`; wired new pages into
`meta.json`.
- **Deletion:** removed the orphaned
`content/docs/reference/v2/hooks/useAgent.mdx` — verified safe (the
canonical `content/reference/hooks/useAgent.mdx` is intact and all
inbound links resolve).

## Notes for reviewer
- The working tree had no `node_modules`, so the docs build was **not
run locally — relying on CI** for the build / lint / commitlint gate.
- Deferred polish (follow-up): state-rendering "in the chat" framing,
decorative `AgentState` types, `agentId`-key explanation,
`useFrontendTool` migration example, error-reference dev-warn nuance.

## Test plan
- [ ] CI green (shell-docs build, lint, commitlint)
2026-06-08 13:56:24 -07:00
..