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BB-fat
24faa10659
Client half of the PiP observation window, wired to the host ObservationService over the /bsk-observation HTTP+SSE seam: - ObservationClientStore: initial state fetch + SSE increments + on-demand thumbnail blob loading (session-authorized readAttachment, same path as the toolview) + interrupt POST. All I/O injectable. - ObservationOverlay registered into the shell.overlay list seat (the sanctioned frame-wide surface; root is off-limits). Hidden with no owned sessions; appears on first start; vanishes when all stop. - Focus view: status row (green/grey/red dot + session + action + mm:ss ticking), breathing thumbnail (new frames fade in, failures keep the last frame with a warning badge, pre-navigate placeholder), and the action area. - Interrupt: single click, no confirm; greys into 'Interrupting…' and back; disabled when nothing is in flight; one-time tooltip explains the semantics (stops the current action only; the run continues). - Card: drag-move via the header, corner-handle resize (min 240x180, max 80% viewport), both clamped and kept for the page lifetime; collapsible status capsule. - PiP: Pop out (user gesture) opens Document PiP with the card's current size, portals the same content in, and clones the document's style nodes; pagehide falls back to the card with state intact; unsupported browsers hide the button; nothing auto-pops. Tests (+17, 89 total): store (fetch/SSE apply/malformed frames/ thumbnail lifecycle/interrupt wire/stop cleanup) and overlay (hidden-> visible lifecycle, status row, thumbnail via loader, interrupt disabled/active/hint-once, capsule, resize clamps, move clamps, PiP unsupported, PiP pop/fallback). Styling follows web-styling (dsw-alias tokens, CSS Modules, focus-visible, reduced-motion).