feat(mcp): show PostHog exec payload in permission dialog

[skoob13]

Problem

Beautify the formatting of PostHog MCP tools.

Changes

• Agent: set _meta.claudeCode.toolName on the requestPermission toolCall in handlePostHogExecApprovalFlow so the renderer routes the dialog to McpPermission.
• Renderer: in McpPermission, format the body via a new formatPosthogExecBody helper that pretty-prints JSON call payloads (and passes other args — e.g. search regex — through unchanged); verbs without args (tools/info/schema) render no body since the title already conveys the action.
• Move the PostHog-specific exec-display helpers out of the generic mcp-apps feature into a new posthog-mcp feature.
• Storybook fixtures for info / tools / search verbs alongside the existing call story.

How did you test this code?

• 14 agent permission-handler tests + 28 renderer posthog-exec-display tests pass (including a new assertion that _meta.claudeCode.toolName is set in the destructive PostHog flow, and new tests for formatPosthogExecBody).
• Storybook: Permissions/PermissionSelector → McpPostHogExec shows pretty-printed { "query": "select 1" } body; sibling stories (McpPostHogExecInfo/Tools/Search) show no body or the regex.

Publish to changelog?

no

[greptile-apps]

Prompt To Fix All With AI

Fix the following 1 code review issue. Work through them one at a time, proposing concise fixes.

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### Issue 1 of 1
apps/code/src/renderer/features/posthog-mcp/utils/posthog-exec-display.test.ts:204-230
**Non-parameterised tests in `formatPosthogExecBody` suite**

The team's stated preference is parameterised tests. The six new `it()` blocks here are testing the same function with different inputs/outputs and are a textbook candidate for `it.each`. For example, the five cases that check input→output could collapse to a single `it.each` table, and the two `undefined` / `""` cases to another `it.each`, keeping the intent clear without repeating `expect(formatPosthogExecBody(...)).toBe(...)` every time.

_{Reviews (1): Last reviewed commit: "feat(code): show PostHog exec payload in..." | Re-trigger Greptile}