feat(runner): move the runner guide into the CLI's help

[Erzhan Torokulov (erzhtor)]

Relates to AGE-5384. Stacked on #1651. Supersedes #1649.

Overview of Changes

references/runner.md was a 668-line hand-written guide next to the commands it described, so it drifted. Its runner actions section still said sequences take no tap, swipe or fill after 1.39.0 shipped them (fixed in #1649, which this folds in). Tester never read it at all: its platform skill restates the rules instead.

This PR moves that knowledge into the CLI, so it ships with the version that runs it:

• Each section that belongs to one command is now that command's --help, after its examples (exec says the value never comes back and how to read it from events console, run covers what travels, env vars and the unreachable-runner trap, and so on). Sources are unwrapped text files in src/commands/runner/guides/, laid out like the rest of --help by formatGuide.
• What spans commands (which runner a command reaches, why the first call must be a run, exit codes, end-to-end example) is workflow.md. declareReferenceGuide attaches it to runner, and only qawolf help ref runner prints it, so qawolf runner --help stays short.
• references/runner.md is now generated from qawolf help ref runner by bun run generate, and a test fails if it drifts. It stays in place for agents that can't run the CLI and for the GitHub URL older skills link to.
• The skill template tells agents to run qawolf help ref runner first, with the file and URL as fallbacks.
• Folded in from docs(runner): mobile actions in runner actions sequences (AGE-5384) #1649: runner actions takes tap, swipe, fill and type on mobile, and on mobile, send tap and swipe, never click or drag.

Size: help ref runner is about 62 KB, up from 25 KB of help plus a 39 KB runner.md read separately.

Stack:

#	PR	Contribution
1	#1651	qawolf help ref [command...] prints a command subtree's full help as Markdown
2	#1652 (this PR)	runner.md's knowledge moves into each runner command's --help; runner.md is generated from qawolf help ref runner
3	qawolf/platform#34845	Tester's qawolf-cli skill points at the CLI's help instead of restating it

Merge after #1651; both ship together in 1.40.0. qawolf/platform#34845 waits for that release.

Testing

bun run typecheck && bun run lint && bun run format:check && bun run knip && bun run test && bun run build
node dist/cli.js runner exec --help   # the guide text is bundled

The --help snapshots changed only by the appended guides. New tests cover formatGuide, the ref-only guide and its heading levels, and the drift check between runner.md and help ref runner. The generated runner.md is stable under oxfmt. All tests pass except 3 keychain tests that also fail on main on this machine.

Checklist

• Changes follow the code style of this project
• Self-review completed
• Tests added/updated (or not applicable)
• No breaking changes (or described below)