Fix bubble internal name loading

[Confetti3]

Summary

• load the internal-name wordlist from the executable directory, working directory, or source checkout
• fail with the checked paths instead of silently displaying tag-only bubble fallbacks
• include wordlist.txt in CI and release packages

Verification

• cargo +nightly fmt --all -- --check
• cargo +nightly test --bin alkahest-prebl app::tests::wordlist_loader_uses_later_existing_candidate -- --exact (1 passed)
• cargo +nightly test --bin alkahest-prebl bubble_browser (6 passed)
• cargo +nightly build --bin alkahest-prebl
• launched the built executable from F:/ with bubble 80FBFE72; startup logged the resolved wordlist load despite the unrelated working directory
• package metadata reports map-name hash 0x5FE28198; the shipped wordlist resolves it to port