QA Test Plan Generator

!IMPORTANT: Follow this process exactly. Do not skip steps.

Step 0: Parse Input

Parse $ARGUMENTS in two passes: first extract the output destination, then detect the diff target.

Pass A — Output mode

Strip and capture a trailing --terminal, --issue, or --file token from $ARGUMENTS. Store it as OUTPUT_MODE. If absent, default to terminal. The remaining tokens form the diff-target argument for Pass B.

Flag	`OUTPUT_MODE`	Effect
`--terminal` (or none)	`terminal`	Render the plan inline in the chat
`--issue`	`issue`	Create a GitHub issue (requires a GitHub remote)
`--file`	`file`	Write the plan to `./qa-plan-<timestamp>.md`