docs(skill): document the new runner surface

[Atchyut Preetham Pulavarthi (theonly1me)]

Overview of Changes

packages/tester-skills reads skills/qawolf-cli/SKILL.md off disk at pod start and hands it to Tester verbatim, so the runner guide is the contract Tester works from. Four commands and three flags landed in this stack without it, and it still told a caller that a runner's first call has to be a whole run.

• Document inspect's three subcommands, the one failure that covers three causes, and why it beats reading a value back out of the console stream
• Document import-package, its --package-version flag and why it needs a live run
• Document stop-run against terminate, which end different things and are told apart only by their names
• Say that a --lines selection is the one call that does not need a run first, since the runner starts a browser for it
• Correct runner run's own description, which still claimed it ships the current directory's files
• Add the new commands to the end-to-end walkthrough
• Add a minor changeset covering the whole runner surface, naming both breaking changes and the failureReason move

Testing

bun run typecheck
bun run lint --max-warnings 0
bun run format:check
bun run knip
bun run test

bun test gives 1810 pass 0 fail. The other five give exit 0.

• bunx changeset status reports @qawolf/cli bumping at minor and nothing at major.
• bun run generate picks up the corrected runner run description in both SKILL.md and the help snapshot, so the table and --help agree.
• Added lines, excluding bun.lock and snapshots: 89.

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