Break the stage+commit window into sub-phases (FAT working-tree walk vs
object writes) via `commit split —` log lines, and add two micro-benchmarks
(sd_bench for SD/FAT primitive ops, git_bench for libgit2 object overhead)
with justfile recipes. Documents the walk-vs-writes cost model in
tradeoff-curves/sync-commit-staging.md to decide whether explicit-path
staging over the editor's dirty set is worth replacing add_all(["*"]).
The design record for Typoena — the decisions, specs, and bench write-ups
behind the writing appliance. Start with the ADRs for the
load-bearing choices, or the v0.1 specs for what the
first release actually does.
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