5191a38f7a3a36aabaf8ac9a0beec32527fce9a1
Four separate defects, each reproduced before being fixed. Accessibility was silently denied. AXIsProcessTrusted() returned false, so every AX read failed, WindowOverlay.init? failed all twelve retries, and attach gave up without a word — indistinguishable from the feature being broken. The cause was outside this file: an ad-hoc-signed app has its permission pinned to its exact cdhash, which changes on every build, so the rebuild-and-replace workflow silently revoked the grant each time while the app stayed listed and ticked in System Settings. Now it prompts rather than failing mutely, and keeps rechecking — macOS never tells an app it has just been granted Accessibility, and overlays were otherwise only reconsidered when a Claude window launched, quit or activated, so a grant made while running did nothing visible until the user happened to touch a Claude window. The tag walked off its window on every drag. windowDidMove re-derived and persisted the corner offset for the app's own programmatic moves too, on the assumption that recomputing an offset it had just positioned against was a no-op. It isn't: AppKit posts that notification synchronously from inside setFrame, and during a live drag the AX frame read there is already newer than the one reposition used, so each event banked the few points the window had moved in between. Observed saturating at 952, which parks the tag at the far edge of the window or off-screen. Placement was anchored to the top-right unconditionally, so any resize moving that corner dragged the tag along. It now anchors to whichever corner it was dropped nearest. Offsets are no longer written back clamped either: a window too small to honour one shows the tag pushed in as far as it fits but keeps the stored distance, so widening the window restores the chosen spot. Styling: thinner (13pt) and pill-shaped so it can sit close to an edge without covering window controls; rotated when against a side edge, reading bottom-to-top on the left and top-to-bottom on the right so the text leans into the window; text colour chosen per profile colour by WCAG relative luminance rather than fixed white, which was as low as ~1.1:1 on a yellow chip against 4.50:1 worst-case now; and text drawn into a one-line-tall rect centred on the chip's midline, fixing its high seating. Settings gains a choice between the name chip and a plain coloured dot, which is never rotated, having no reading direction. Verified live throughout: a 400pt offset squeezed to 260 on a narrowed window and returned to 400 on restore with the stored value untouched; a drag committed the expected corner and orientation; and contrast was measured across the hue wheel. Tag placement is also stored per profile rather than once for the whole app. Two windows side by side are the case these tags exist for, and wanting each one's tag somewhere different is the normal outcome — one window's sidebar is not another's. Previously a single shared offset made them look independent (only the dragged tag moved at once) while every other tag snapped to it on its next reposition. A tag is a floating panel, which puts it above every ordinary window on the system rather than merely above the window it labels — so it hovered over the browser, the editor, and everything else, even when its own window was buried or on another Space. There is no cross-process way to attach one window above another (addChildWindow is same-process only, and the private ordering call window managers use is a one-shot that goes stale on the next reorder), so each tag now checks whether the window it labels is genuinely visible beneath it. The window server returns its list front-to-back, so one pass answers it: anything overlapping the tag before we reach our own window is covering it, and never reaching that window means it isn't on screen at all. Tag position is also clamped into whatever part of the window is on screen. A window dragged half off the edge takes its anchored corner with it, and a tag that follows it out of view identifies nothing. The clamp is presentational only — the stored anchor is untouched, so the tag returns to it once the window is fully back. Occlusion is judged from the window server's listing, which it returns front-to-back. Our own window is identified by its owning process rather than by matching rectangles: AX reports a new position the instant a window moves while the listing still holds the previous one, so a geometric match fails almost continuously mid-drag — measured at 87 of 92 frames, during which the walk ran past our own window and mistook whatever else overlapped the tag for something covering it. Only ordinary windows count as occluders. Everything above that band is permanently in front and would veto the tag forever — including the invisible one-pixel markers some utilities park in a screen corner, which is what made a tag vanish at the bottom-left and nowhere else: it takes a window moved off two edges at once for the tag to clamp into that pixel.
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426 KiB