Function normalizeToolInput

src/utils/api.ts:577–692

(
  tool: T,
  input: z.infer<T['inputSchema']>,
  agentId?: AgentId,
)

// TODO: Generalize this to all tools
export function normalizeToolInput<T extends Tool>(
  tool: T,
  input: z.infer<T['inputSchema']>,
  agentId?: AgentId,
): z.infer<T['inputSchema']> {
  switch (tool.name) {
    case EXIT_PLAN_MODE_V2_TOOL_NAME: {
      // Always inject plan content and file path for ExitPlanModeV2 so hooks/SDK get the plan.
      // The V2 tool reads plan from file instead of input, but hooks/SDK
      const plan = getPlan(agentId)
      const planFilePath = getPlanFilePath(agentId)
      // Persist file snapshot for CCR sessions so the plan survives pod recycling
      void persistFileSnapshotIfRemote()
      return plan !== null ? { ...input, plan, planFilePath } : input
    }
    case BashTool.name: {
      // Validated upstream, won't throw
      const parsed = BashTool.inputSchema.parse(input)
      const { command, timeout, description } = parsed
      const cwd = getCwd()
      let normalizedCommand = command.replace(`cd ${cwd} && `, '')
      if (getPlatform() === 'windows') {
        normalizedCommand = normalizedCommand.replace(
          `cd ${windowsPathToPosixPath(cwd)} && `,
          '',
        )
      }

      // Replace \\; with \; (commonly needed for find -exec commands)
      normalizedCommand = normalizedCommand.replace(/\\\\;/g, '\\;')

      // Logging for commands that are only echoing a string. This is to help us understand how often  Claude talks via bash
      if (/^echo\s+["']?[^|&;><]*["']?$/i.test(normalizedCommand.trim())) {
        logEvent('tengu_bash_tool_simple_echo', {})
      }

      // Check for run_in_background (may not exist in schema if CLAUDE_CODE_DISABLE_BACKGROUND_TASKS is set)
      const run_in_background =
        'run_in_background' in parsed ? parsed.run_in_background : undefined

      // SAFETY: Cast is safe because input was validated by .parse() above.
      // TypeScript can't narrow the generic T based on switch(tool.name), so it
      // doesn't know the return type matches T['inputSchema']. This is a fundamental
      // TS limitation with generics, not bypassable without major refactoring.
      return {
        command: normalizedCommand,
        description,
        ...(timeout !== undefined && { timeout }),
        ...(description !== undefined && { description }),
        ...(run_in_background !== undefined && { run_in_background }),
        ...('dangerouslyDisableSandbox' in parsed &&
          parsed.dangerouslyDisableSandbox !== undefined && {
            dangerouslyDisableSandbox: parsed.dangerouslyDisableSandbox,
          }),
      } as z.infer<T['inputSchema']>
    }
    case FileEditTool.name: {
      // Validated upstream, won't throw