Lahfir 32175e44c5 fix: return observed trees and stop demanding renderer activation from shallow walks (#117) ... * fix: return observed trees, stop demanding activation from shallow walks Six defects found by measuring the observation and action paths against real applications. Each was code computing something correct and then discarding it. Snapshot discarded a fully-observed tree when its budget expired. Finder observed 247 nodes, threw away all of them, and returned TIMEOUT with zero refs. It now returns what it observed with `complete: false`, and every node whose descendants were cut carries `subtree_truncated`, which propagates to its ancestors so a reader can walk from the root to the boundary. Only a full snapshot may be partial: a drill-down replaces refs inside an existing map, so it still requires a complete observation rather than destroying descendants it may not be able to re-allocate. `kAXErrorIllegalArgument` was classified as retryable. It is the window bridge rejecting an element outright, which no amount of retrying will change, so strict resolution burned its full budget on a call that could not succeed and then blamed the application. Finder refs went from 0 of 9 resolving at ~814ms to 6 of 7 at ~120ms. A depth-clamped observation was treated as evidence that a renderer had no accessibility surface. A shallow walk stops above the web content by design, so every skeleton snapshot of a Chromium application demanded an activation it did not need and re-walked the tree until the deadline expired. Slack `--skeleton` went from failing at 3.4s to 0.2s, and depth now scales monotonically instead of shallower being slower than deeper. The retry that follows a genuine activation also backs off, because each attempt costs a full tree walk: a 3s budget spent about 120 of them and now spends 11. A boundary node is read for its child count alone. On a renderer that materialises children lazily that count can cost more than the traversal it describes, so it is now best-effort; a boundary that cannot afford one is still reported as truncated, just without a number. Refmap retention kept 512 snapshots and swept every one of them for orphaned temporary files on every save. Retention is now 128 with eviction to 96 so the sort-and-stat pass is amortised, the per-save sweep covers only directories that save could have written, and the exhaustive sweep runs with eviction. `session end` drops the ref scaffolding it accumulated, but only under `ArtifactsMode::Full` where the trace keeps its own copy; the default mode never copies them, and discarding them there would sever snapshot resolution for anyone reading the trace after. `is --property` read element bounds for properties that never use them. BREAKING CHANGE: ENVELOPE_VERSION is now 2.2. `data.complete` is present on every successful snapshot, and a snapshot that exhausts its budget returns `ok: true` with `complete: false` where it previously returned a TIMEOUT error. Callers that branched on TIMEOUT to detect an oversized tree must read `complete` instead. * docs: correct solution docs that contradicted the code and each other A refresh pass over docs/solutions/ against the current tree. Three of the four corrections were internal contradictions that reading the doc alone could not reveal. The pointer-action doc cited `resolve_point_with_deadline`, which has no matches in the repository; hover and drag resolve in two phases, before and under the interaction lease. It also now distinguishes the two hit-tests that exist, since the shared battery's multi-candidate check has grown to cover the click family while the pointer pipeline keeps its own single-point check. The drag-abort doc claimed the release guard "arms only after mouse-down is posted". It arms before, which is what the doc's own prevention rule requires and what the code does. The progressive-snapshot contract described one truncation path. There are two, and the second was silently dropping descendants with no marker at all, violating that doc's own rule. CONCEPTS.md gains Interaction Lease, Partial Observation and Delivery Semantics, and corrects Interaction Policy, which claimed ref commands expose exactly two modes when a third is the base policy of an explicit key press and is directly selectable by language bindings. * fix: only discard refmaps the trace actually copied Being in ArtifactsMode::Full was treated as proof that every refmap had been duplicated into the trace, so ending a session deleted the whole snapshot store. It is not proof. The artifact byte budget rejects a copy once a session's refmaps exceed it, and a serialisation failure skips one too; both report success to the caller. A long full-artifacts session therefore holds snapshots whose only refmap lives in the store, and ending it destroyed them permanently, severing snapshot resolution for anyone reading that trace afterwards. Each snapshot directory is now removed only against its own duplicate in the trace, and the latest-snapshot pointer survives unless the snapshot it names is gone. The existing full-artifacts test encoded the defect: it seeded a snapshot with no trace copy and asserted the store was emptied. It now seeds the copy it claims exists, and a new test covers the case that was losing data — a refmap the trace never copied must survive.		2026-08-02 01:02:50 -04:00
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hover-drag-skip-the-actionability-battery.md	fix: return observed trees and stop demanding renderer activation from shallow walks (#117)	2026-08-02 01:02:50 -04:00