v0.20.1 — col_gap deprecation + perf-alloc isolation + doc patch#245
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…oc gaps + skill v0.20 sync Documentation + deprecation + flaky-harness root-cause fix patch. Lands the audit items the v0.20.0 CHANGELOG flagged as "patch-safe doc-only gaps", an API discoverability fix for the `col_gap` / `row_gap` name collision, a skill-pack refresh covering the v0.20 surface, and a source-level fix for the parallel-test contamination that previously needed a `--test-threads=1` CI workaround. Highlights: * Deprecate `Context::col_gap` / `Context::row_gap`. The two-arg form collides with `ContainerBuilder::col_gap` / `row_gap`, which set the row-finalize / column-finalize main-axis gap (Tailwind `gap-x` / `gap-y` axis convention) and so mean the opposite thing. Migrate to `ui.container().gap(n).col(f)` / `.row(f)` — same output, no collision. * 25 demo + integration files (22 examples + 3 tests) migrated off the deprecated form so AI training data and downstream copy-paste land on the unambiguous shape from the start. * `tests/v020_perf_alloc.rs` cross-test contamination root-caused. The pre-fix `measure_lock` mutex protected only the measurement critical section, so non-measuring sibling tests still ran in parallel and leaked alloc into the global counter. Fix: every `#[test]` now grabs the file-wide mutex via `enter_perf_test()` on its first line, and `measure_allocs` switches to `try_lock`. The `--test-threads=1` workaround in `.github/workflows/ci.yml` is removed in the same commit. * `Buffer::recompute_line_hashes` / `row_clean` / `row_hash` gated on `#[cfg(any(feature = "crossterm", test))]` so they no longer trip `dead_code` under `--no-default-features`. The methods exist solely for the `flush_buffer_diff` fast-path, which already lives behind `feature = "crossterm"`. * Status-family rustdoc fill (`badge`, `badge_colored`, `key_hint`, `stat`, `stat_colored`, `stat_trend`, `empty_state`, `empty_state_action`) plus `vsplit_pane` example block. Closes the v0.20.0 patch-safe doc audit. * SKILL.md additions: Rule 6 (return-type pattern: `&mut Self` vs `Response`) and Custom widget pattern decision guide (function form vs `impl Widget`). * `slt` / `slt-migration` skill packs synced from v0.19.2 → v0.20 with removed-API table, hook-ordering decision table, Korean triggers. * README cleanup: dropped version-specific "v0.20 Demo Catalog" in favor of pointing at `docs/EXAMPLES.md`, generalized the launcher snippet so the top-level README stays timeless across minor releases. * `cargo update -p rand` 0.9.2 → 0.9.4 to clear RUSTSEC-2026-0097 (unsound transitive dep via the proptest dev-dep). No public runtime behavior changes — deprecated paths still call into the same `push_container` code, so existing apps keep building with a deprecation warning until v0.21+. The full Pre-CI Core + Extended Gate runs clean with the default parallel test runner; no environment-specific workarounds remain. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Context::col_gap/Context::row_gapcollide withContainerBuilder::col_gap/row_gap(Tailwindgap-x/gap-yaxis convention, opposite semantics). Migrate toui.container().gap(n).col(f)/.row(f)— same output, no collision. 25 demo + integration files migrated in the same commit.tests/v020_perf_alloc.rsparallel-runner contamination. Every#[test]now grabs the file-wide mutex viaenter_perf_test();measure_allocsswitches totry_lock. The--test-threads=1workaround in.github/workflows/ci.ymlis removed in the same commit — no environment carve-outs remain.# Exampleblocks added to the status family (badge,badge_colored,key_hint,stat,stat_colored,stat_trend,empty_state,empty_state_action) plusvsplit_pane.SKILL.mdgets Rule 6 (return-type pattern:&mut SelfvsResponse) and a function-vs-impl Widgetdecision guide.slt/slt-migrationskill packs synced from v0.19.2 → v0.20.Buffer::recompute_line_hashes/row_clean/row_hashcfg-gated oncrossterm | testto cleardead_codeunder--no-default-features.cargo update -p rand0.9.2 → 0.9.4 clears RUSTSEC-2026-0097 (unsound transitive dep via proptest dev-dep). README's version-specific "v0.20 Demo Catalog" replaced with a timeless launcher section pointing atdocs/EXAMPLES.md.Test plan
Pre-CI Core + Extended Gate, default parallel runner, no workarounds:
cargo fmt --checkcargo check --all-featurescargo check -p superlighttui --no-default-features(dead_code regression cleared)cargo clippy --all-features -- -D warningscargo test --all-features— 141 passed; 0 failed (was 2 failed pre-fix)cargo check --examples --all-featurestyposcargo check -p slt-wasm --target wasm32-unknown-unknowncargo hack check -p superlighttui --each-feature --no-dev-depscargo audit— 0 warnings after rand 0.9.4cargo deny checkNo public runtime behavior changes — deprecated paths still call into the same
push_containercode, so existing apps keep building with a deprecation warning until the planned v0.21+ removal.🤖 Generated with Claude Code