The branch merges thirteen shared library files, including two new modules, so
every bundle that imports them was carrying older bytes than its source.
Found by building each of the twenty-two bundles the freshness step names, one
at a time: all twenty-two build cleanly in 8-24 seconds, none fails and none
hangs -- and twenty of them produce different bytes. Big Picture alone moves
510 bytes.
That also corrects a check I trusted earlier in this branch. `bun run tree`
reported zero changed files and I read it as "the consumers are fresh". It is
not: tree stages assets and regenerates leaf pages, and does NOT rebuild the
bundles, so it can report a clean tree over twenty stale ones. Only a build
answers that question.
Hashes rebaked and check:sri passes across every leaf.
