Show hidden files by default

[andrei-hasna]

Summary

Implements E-00114 under frozen acceptance scope yasa-show-hidden-default-v1 (risk tier: elevated; repair cycle: 0).

• Parent native plan: 8eadc06b-7276-4854-a6bc-b879866abf6f
• Parent goal: 32e0d30d-e05a-45ce-9034-dfc9afeefd1d
• Parent node: e7994834-cd3e-4416-80fc-9e82bb8b59e8
• Child goal: 3a71ffe2-2b5b-4936-954e-a0f3c034a643
• Todos plan: a08dc545-512f-43ee-a553-6231a2131c50
• Owning task: 2cf286f7-57f8-4c58-ae7f-c809e14744ea (E-00114)

Open Yasa now embeds [mgr] show_hidden = true in the fork preset. Explicit supported [mgr] false/true user overrides remain authoritative, obsolete [general] show_hidden remains ignored, and the existing . session toggle remains present.

Root cause evidence

Station01 currently runs Yasa 26.5.6 at 600725af83bf76e1e5f4d56c8e9850620a4b4649. Its obsolete ~/.config/yazi/yazi.toml uses [general], which the current overlay parser ignores; fresh stations also receive no valid override. The durable correction therefore belongs in the fork preset, not in a machine-local config file.

Exact files

• yazi-config/preset/yazi-default.toml
• yazi-config/src/lib.rs
• README.md

Validation

Red-green evidence: the focused no-override test failed at the intended show_hidden(None) assertion before changing the preset, then passed with the full matrix.

• rustfmt +nightly --check **/*.rs
• cargo +1.95.0 test --locked -p yazi-config
• cargo +1.95.0 clippy --locked --all
• cargo +1.95.0 check --locked --workspace --all-targets
• cargo +1.95.0 build --locked
• cargo +1.95.0 test --locked --workspace
• cargo +1.95.0 test --release --locked -p yazi-config
• git diff --check
• staged gitleaks 8.30.1 scan: passed, non-printing
• committed range gitleaks 8.30.1 scan: passed, non-printing
• labeled adversarial self-review: no P0/P1 findings across config path precedence, user overrides, unknown-field behavior, live-config isolation, packaging/release drift, or test sufficiency

Existing unrelated compiler/clippy warnings remain unchanged.

Operational boundary

No release, publish, rollout, machine/config mutation, user yazi.toml installation, installed Yasa binary mutation, packaging change, workflow change, or parent native-state mutation was performed.

Rollback

Revert exact commit d3bf1f90ee78a2d9310ab22c494203b058e635f0 to restore the previous preset default and remove the accompanying tests/documentation.

Exact head

d3bf1f90ee78a2d9310ab22c494203b058e635f0