Add codespell pre-commit hook with a project dictionary
(doc/dictionary.txt) to ignore domain-specific terms such as
"aaS" (as in FPGAaaS / accelerator-as-a-Service).
Fix ~50 spelling errors in source, tests, docs, api-ref, and
release notes. No logic changes; comments and strings only.
Generated-By: claude-code sonnet 4.6
Change-Id: Idf408d3144973f8415092c6304821543a3675039
Signed-off-by: Sean Mooney <work@seanmooney.info>
ea0cd6ee25