- gh.ts held wire types, search, Actions run-watch, PR checkout/push/create,
PR diff parsing and view fetch/format in 3958 lines.
- Split into gh-types, gh-search, gh-run-watch, gh-pr-checkout, gh-pr-diff,
gh-view and a gh-common module holding the shared primitives and the single
process-lifetime default-repo memo pair; gh.ts is now 246 lines.
- All 22 exports stay on gh.ts because tools/index.ts star-exports ./gh, so
the issue:// and pr:// protocol handlers needed no edits.
