Feature interoperability validation

PR #116 combined the feature branches for testing on top of the release-compatible recovery at eecace3. The verified integration was squash-merged to master at fe502d0. The checkpoints below retain the original integration commit identities.

Merge checkpoints

Order	Feature PR	Scope	Combined validation
1	#104	Monitor-local centered workspace bounds	Merged at c20e08e
2	#115	Capped grids preserve anchors and reject padding selection	89b2285: tests, sanitizers, both release builds, 54 two-output selections and padding/empty-workspace input checks pass
3	#105	Pinned windows do not interrupt overview close	361abbd: tests, sanitizers, both release builds, repeated range/input checks and pinned-window selection follow-through pass
4	#114	All-monitor overview, input ownership, drag/drop and recapture	5eae39b + b042565: tests/sanitizers and both builds pass; 108 selections, cross-monitor drag, surviving-output teardown and exact submap restoration pass
5	#107	Native scrolling overview and mixed-layout sessions	d41f75c through c905dcf: tests/sanitizers, both release builds, CMake/Meson suites, 39 input-oracle cases and native acceptance on both releases pass; mixed-session regressions recorded below

From the second merge onward, each combined tree must pass regression tests, separate builds for Hyprland v0.56.1 and v0.56.2, and the applicable disposable runtime checks before the next feature is merged. The final checks cover the features together, especially workspace selection, exact submap restoration, multi-monitor ownership, preview recapture, pinned windows and scrolling input.

Building the combined features

Use master or the release tag for the landed features. The v0.56.1 and v0.56.2 HyprPM pins select combined source on master at 5891014c611e1bd56d0121143f0221d46b5c0967; older release pins are unchanged. Compile against the exact Hyprland revision and dependency ABI of the disposable compositor. An enabled HyprPM entry is not evidence that the combined artifact is loaded: confirm the plugin version and configuration errors in the target compositor. Do not overwrite an artifact while it is loaded.

The ordinary source gates are:

make -B test
make check-pins REF=HEAD
bash scripts/inject-scrolling-input.sh --source-contract

Use make -B all with separate output paths and exact include paths for each release. A previously built binary is not proof for a different header set.

The integration PR was merged after combined testing and inline review. Compile checks alone do not establish runtime interoperability.

The fourth checkpoint found that a disconnected output could leave its overview registered. The integration branch unregisters it on monitor removal; the focused runtime regression now passes.

Combined behavior and repairs

Grid and native scrolling sessions share the per-monitor registry, generation checks, keyboard traversal and exact entry-submap restoration. Selecting an already-active workspace on another output now transfers monitor focus too. Relative grid selectors use their own monitor context; an empty tile cannot select a foreign-owned empty workspace or create its workspace on another output.

Testing with repainting clients exposed a native input race: scene refresh cleared ownership between press and release. Content refresh now waits for the interaction to finish, and released selection is retained until deferred close. Native drops revalidate ordered column/target identities and geometry before mutation. Config reload, workspace moves and teardown still invalidate input; workspace-move invalidation is conservative across native sessions.

The final pointer regression holds ownership through 350 ms of 50 ms client repaints, commits a real two-column-to-one-column drop while retaining both targets, then changes topology with expel during another held drop. The stale release preserves the changed geometry and emits no additional mutation. Grid-to-scrolling, scrolling-to-grid and scrolling-to-scrolling cross-output drops all release ownership without moving windows or closing peer sessions.

Integration checkpoint evidence

The following separate binaries were built from c905dcf and loaded into matching disposable compositors. Both passed native topology/direction checks, deterministic mouse/touch cancellation and reacquisition, same/new/existing column and cross/mixed/terminal workspace mutations, rollback, real Wayland keyboard/pointer input, reload/close/unload and process-health checks.

Hyprland	Source hash	Plugin SHA-256
v0.56.1	5c9377c15f85c50648f35ca5a213754f95b93ca0	aef9db328fe6ea3e67d9a3ad8653ac81df9f14049dc5e6e48be504066f1167b1
v0.56.2	efb50993780079460b0cbed1363e2166a2de1d9f	54f07e26a758e2b25c576de11ebca9f079b632d0937e4ecd6f9a44c7b6276841

Pinned-preview opt-in/off pixel assertions and selection through a hidden pinned overlay pass on both releases. CMake and Meson each pass all three suites. Local logs, scripts, binaries, captures and checksums are retained under /var/tmp/hyprexpo-integration.oc6IUs, with the final source checkpoint in merge-5-input-safe-c905dcfb0e1050c19021f2cf4b8f2d71d04763ce and native runs in native/v0.56.{1,2}-input-safe*.

v0.56.2 release revalidation

After the squash merge, master commit 7c5e2ac2524ffa75d077b5785b760ec81edb0cc6 was rebuilt separately for both supported Hyprland releases and passed native acceptance in both matching disposable compositors. Its runtime code is identical to the reviewed integration head 86c6783; only VERSION changed to v0.56.2.

Hyprland	Pinned-source build SHA-256
v0.56.1	e86ca41c0d3982cfb8768a6a3fe632c9cd09f1176a3faa44d336865b38bc96c1
v0.56.2	5044f240905fa47c7f905ea21d3fdd80a95390554ff0201a1581b64c043616b3

These pre-tag pin builds report v0.56.2-dev+7c5e2ac. The release workflow builds the tagged tree afresh and must report clean v0.56.2; its downloadable artifact and provenance are separate from the above binaries. Fresh source tests and ASan/UBSan suites passed. Logs/builds are under /var/tmp/hyprexpo-release-0562.6RsFp3; native acceptance evidence is under /var/tmp/hyprexpo-integration.oc6IUs/native/v0.56.{1,2}-release-0562-pin.

v0.56.2+1 release revalidation

After PR #119 and PR #118 merged, pulled master commit 5891014c611e1bd56d0121143f0221d46b5c0967 was rebuilt separately for both supported Hyprland releases. It passed source tests, ASan/UBSan, and matching disposable runtime acceptance before the two current release pins moved.

Hyprland	Pinned-source build SHA-256
v0.56.1	81427ab6967b0d7bdc1e7909440ef2d3ae4ca3207913be591d234c44aacad58e
v0.56.2	17c86694ef6f68bc0786ad36fd4abf9cb58799f0d613dc39ade57a58364d21cb

The runtime matrix covered 5x2, 2x5, single-axis and inherited 3x3 grids on landscape and portrait outputs, keyboard and pointer selection, swipe-close, first-anchor growth, capped padding, unopened-workspace and cross-output drops, and confirmed that dynamic grids ignore fixed rows. Evidence is under /var/tmp/hyprexpo-release-0562p1/run.xUZ0gI and /var/tmp/hyprexpo-issue111-evidence/run.5W2i3c/v0.56.{1,2}-release-0562p1-source. These pre-tag builds report a development version; the release workflow must build and publish a clean v0.56.2+1 artifact from the annotated tag.

Test boundaries

• Grid-to-grid cross-output dragging is supported. Cross-output drops involving native scrolling cancel safely; native scrolling mutations remain within the initiating monitor's workspace rows. This integration does not introduce a cross-output native-column transfer mechanism.
• Deterministic touch events and Wayland virtual input do not replace physical touchpad/touchscreen testing. Physical devices and Nix builds remain untested.
• PR #117 is a separate development-Hyprland compatibility draft superseding reverted #109, not part of this tagged-release feature set. It remains separate to preserve the #113 recovery and explicit release reference.