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xarmian
84eef5dd38
PLAN-2392 phase 3d V3 (final task of the plan) — the mobile browser proof for the attachment viewer's touch gestures shipped in V2 (TASK-2518). Real touch is driven through the compositor via CDP Input.dispatchTouchEvent (a CdpTouch helper in the e2e lib), since Playwright's touchscreen is single-tap only. New web/e2e/attachment-viewer-touch.spec.ts (mobile-chromium), 9 legs: - two-finger spread/converge zoom in/out - off-centre affine anchor oracle: a moving-midpoint translate+spread keeps a known image-local point under the midpoint (sub-pixel residual; a zoom-around-centre mutant misses by ~75px, TOL=6px) - double-tap fit<->actual + single-image-tap-inert + backdrop-tap-close - 2->1 lift degrade: jump-free hand-off + survivor pan arms - '+' mid-pinch rebase (no stale-baseline snap; sampled on a tiny post-+ move) - touchCancel all-cancel teardown + next gesture arms fresh - letterbox touch never pans + letterbox tap closes - image/stage touch-action:none, backdrop auto - tap-to-load first-tap priority CDP semantics empirically pinned (not assumed): touchStart/Move carry the full active set; touchEnd names the ending point (pointerup#<id> observed); touchCancel is all-or-nothing. Emulation boundary recorded honestly in DOC-2521 (device-proof checklist): the 2->1 survivor-pan CONTINUATION can't be expressed in CDP — synthetic touch releases the survivor's implicit pointer-capture on the next move, tearing the fresh pan down (a real digitiser keeps it), so the leg proves arm+no-jump and the continuation is device-verified. Also checklisted: gesture feel/arbitration, momentum, real touchCancel, iOS Safari (no WebKit CI project), off-root release. Mutation-verified (build web+go at worktree root, fresh CI server per run): pinch handler disabled -> spread/oracle/rebase red; anchor->stage-centre -> oracle red while spread stays green (discrimination); double-tap disabled -> toggle red; degrade disabled -> 2->1 red; rebase disabled -> rebase red. Codex: 3 rounds, final CLEAN (r1 flagged a stage-settle race -> fixed, and a docs-based touchEnd objection -> refuted empirically; r2 flagged the rebase test wasn't discriminating -> sampled on a tiny move + mutation-proved). Claude-Session: https://claude.ai/code/session_01WFBYxdBuSZs2tjipATxAZu