Find a widget's position by drawing only the path to it

evidence/geometry-reader-acquisition-20261006/README.md

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+# Position readers acquire their original path
+
+Physical05 records a 96.39ms full arrangement from TextArea Undo's cursor-region
+lookup. That is a position request, not a request to enumerate all descendants.
+The recording does not retain the queried widget or explain its viewport miss;
+no whole-journey timing reduction is claimed.
+
+Compositor already owns committed scene selection, retained ancestry paths and
+explicit complete layout. Two position decisions were competing with it:
+completeness invalidation rejected committed full-map coordinates, and missing
+positions/membership forced full_map even though only one widget was requested.
+
+Published positions now derive directly from the same original _published_map
+used by paint/hit layers. A missing position uses original reflow_visible with
+the requested ancestry and existing scene members retained. Membership consumes
+that same position acquisition. Explicit full_map enumeration still arranges all
+descendants. Recursive measurement and scoped capture keep their original rules.
+No additional map, cache, target registry, readiness rule or timer is introduced.
+
+Native layout, scroll, hide/prune/reparent and mutation/capture consumers were
+read before editing. Existing Package parsed 249 native production modules,
+464 tests and 288 read-only Toad modules, zero omissions; before.json records
+881 lexical sites. External dynamic consumers are not exhaustively resolved.
+Toad and original Physical05 helpers/footage are unchanged.
+
+## Changed-path verification
+
+One serial source batch executed the two new real run_async Apps, all six existing
+viewport target/capture cases, scoped capture/offsets and caption damage. Nine
+cases passed in the original batch. The Undo case's offscreen keyboard assertion
+failed because original Hide handling blurred the editor; the original log is
+retained as offscreen-key-refusal.log. No production code changed after this
+result. The corrected case invokes the retained editor's original Undo action,
+executing the real selection watcher and scroll-region reader: **1 passed in
+0.77s**, undo-path.log. The other nine cases were not repeated.
+
+The Undo App verifies only viewport/retained-path arrangements during the changed
+action, unchanged original full-map identity, preservation of a prior offscreen
+reader, and exact agreement with the explicit complete-map coordinates. The other
+new App verifies completeness invalidation cannot reject committed coordinates,
+and actual removal still revokes them. Existing cases cover cached body/overlay
+geometry, explicit reader paths, foreign/removed targets, scoped capture's missing
+child refusal and damage retention. Complete enumeration remains explicit.
+
+After: 249 production modules, 465 tests and the same 288 Toad dependency modules,
+zero parse omissions. One published scene owns existing coordinate selection;
+position/membership no longer independently demand complete enumeration.
+
+This qualifies native source reader behavior through HeadlessDriver Apps, not a
+latency result or matching Toad/terminal acceptance. Original mutation, inline,
+translucent and hit mechanisms were not changed; those full workflows are not
+newly qualified by this gate. No Physical05 repeat, installed package, native
+artifact, saved source, provider or public runtime operation occurred. Both new
+Apps returned through original shutdown; no operation remains running.