cowork-bot: fix export-list comment masking + repair broken CLI subprocess tests (#37)

* fix: remove dead revenueholdings-license optional dependency

* chore: update package version

* cowork-bot: fix multi-line export list detection + 4 regression tests

scanner.py: _EXPORT_LIST_PATTERN was applied line-by-line, so multi-line
export blocks like:

    export {
      Foo,
      Bar,
    }

were silently missed — Foo and Bar were never added to the exports map
and thus never flagged as unused exports (false negatives).

Fix: apply _EXPORT_LIST_PATTERN to the full file content (re.DOTALL added
for clarity; [^}] already matched newlines). Line number computed via
content.count('\n', 0, m.start()) + 1 so findings still point to the
opening 'export {' line. Single-line export { Foo, Bar } behaviour is
unchanged.

Add TestMultiLineExportList (4 tests) covering: multi-line detection,
used-name suppression, alias handling, single-line regression.

* cowork-bot: seed cowork-auto-pr workflow for auto PR creation

* cowork-bot: fix export-list comment masking + repair broken CLI subprocess tests

- Strip // comments from multi-line export lists so exports after commented
  entries are no longer silently missed (_parse_exports in scanner.py).
- Replace sys.executable subprocess probes in test_cli_edge_cases.py with
  CliRunner so the suite passes regardless of editable-install state.
- Add regression test for inline comments inside export { } blocks.

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Co-authored-by: cowork-bot <cowork@cowork.bot>
Co-authored-by: DevForge Engineer <engineer@devforge.dev>

Author: 3 people