Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@src/components/OlsToolUIs.tsx`:
- Around line 27-37: toolsData can be undefined causing olsToolsWithUI to throw
when calling .map(); guard by converting undefined to an empty Immutable Map or
early-return before mapping: in the selector call/assignment for toolsData
(where useSelector retrieves s.plugins?.ols?.getIn(['chatHistory', entryIndex,
'tools'])), ensure toolsData is set to an empty Immutable.Map() when falsy, or
check toolsData before creating olsToolsWithUI; then run .map()/.filter only on
a guaranteed Immutable collection so olsToolsWithUI, toolUIMapping, and
downstream code using tool and toolUIComponent are safe.

In `@src/types.ts`:
- Line 38: The olsToolUiID property in the type definition is currently required
but is treated as optional in usage (see olsToolUiID references in Prompt.tsx
and OlsToolUIs.tsx and the fact it may arrive only with tool_result events), so
update the type that declares olsToolUiID to make it optional (e.g., change
olsToolUiID: string to olsToolUiID?: string) so the compiler reflects actual
runtime behavior and avoids false positives in places that guard against its
absence; ensure you update the interface or type in src/types.ts where
olsToolUiID is declared and run type checks to verify callers (Prompt.tsx,
OlsToolUIs.tsx, any tool_call/tool_result handlers) still compile.
- Line 31: The args field in the shared type is declared as "{ [key: string]:
string }" but the codebase uses it as a generic map (ResponseToolModal.tsx casts
to Record<string, unknown> and MCPApp.tsx's handleToolCall expects
Record<string, unknown>). Update the type definition for args to Record<string,
unknown> in the declaration (the symbol to change is the args field in the type
in src/types.ts) so it matches the actual usage and avoids unsafe casts.

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@README.md`:
- Around line 267-291: The README shows mismatched IDs between the MCP
annotation (_meta.additionalFields.olsUi.id set to 'my-mcp/my-tool') and the
plugin extension (the "ols.tool-ui" extension's properties.id set to
'my-obs/my-tool'); update one so both use the exact same tool UI id (e.g., make
both 'my-mcp/my-tool' or both 'my-obs/my-tool') so the mapping resolves; verify
the id in the annotation and the "ols.tool-ui" extension's properties.id match
exactly and keep the component.$codeRef (MyToolUI) unchanged.
- Around line 299-307: The example TypeScript component declaration is missing
the colon between the component name and its type annotation; update the
declaration for MyToolUI so the identifier MyToolUI is followed by a colon and
the React.FC type annotation (i.e., change the declaration with MyToolUI
React.FC<{ tool: MyTool }> to use a colon between MyToolUI and React.FC) so the
example compiles as valid TypeScript.

---

Duplicate comments:
In `@src/components/OlsToolUIs.tsx`:
- Around line 27-31: toolsData (from the useSelector that reads
s.plugins?.ols?.getIn(['chatHistory', entryIndex, 'tools'])) can be undefined,
and calling .map() on it when constructing olsToolsWithUI causes a render crash;
guard before mapping by checking toolsData is defined (and is an Immutable
Map/has size) and only call .map() when present, otherwise set olsToolsWithUI to
an empty array or Immutable List; update the olsToolsWithUI assignment to
conditionally map (e.g., if (toolsData) { toolsData.map(...) } else fallback) so
rendering is safe when entryIndex/tools are missing.