noctalia-plugin: captures as streams (no 5 s timeout), valw's error message in notifications, full state on every --set

docs/superpowers/plans/2026-10-04-valw-noctalia-plugin.md

@@ -1247,7 +1247,7 @@ noctalia msg plugins enable elars/valw
 noctalia msg panel-toggle elars/valw:toolbar
 ```
 
-Expected: the panel appears near the bar with the four modes, the timer and three toggles, in Noctalia's style. Ask the user to confirm what they see, then close it (`noctalia msg panel-close`). Check `grep -i valw ~/.cache/noctalia/noctalia.log | tail -20` for Luau errors (unknown glyph names, bad props); fix any in the plugin, rerun Task 3's tests, and commit (`jj commit -m "noctalia-plugin: fixes from the live Noctalia" noctalia-plugin`).
+Expected: the panel appears near the bar with the four modes, the timer and three toggles, in Noctalia's style. Ask the user to confirm what they see, then close it (`noctalia msg panel-close`). With the user's go-ahead, also take two real shots from the panel: one with the timer at 5 s (the countdown runs, the shot lands, no error notification) and one Region shot held open for more than 6 s before selecting (it must not be killed). Check that nothing is clipped at 360×220 (the "Play sound" row, the four mode buttons in Turkish); adjust `width`/`height` in `plugin.toml` if needed. Check `grep -i valw ~/.cache/noctalia/noctalia.log | tail -20` for Luau errors (unknown glyph names, bad props); fix any in the plugin, rerun Task 3's tests, and commit (`jj commit -m "noctalia-plugin: fixes from the live Noctalia" noctalia-plugin`).
 
 - [ ] **Step 4: Undo the dev install**
 

docs/superpowers/specs/2026-10-04-valw-noctalia-plugin-design.md

@@ -89,18 +89,23 @@ about 360 × 220.
 - On open (`onOpen`): `valw toolbar --state` → `noctalia.json.decode` →
   render. If valw is missing (`noctalia.commandExists`) or the call fails:
   a single label "valw is not available" and `noctalia.notifyError` with
-  the stderr's last line.
+  valw's error message (its `error:` line).
 - A row of four buttons with glyphs and labels: Screen (`device-desktop`),
   Region (`crop`), Window (`app-window`), Zoom (`zoom-in`). The
   remembered mode is `variant = "primary"`, the others `"outline"`.
 - A click on a mode: `panel.close()`, then
   `sleep 0.3 && valw toolbar --run <mode>` (the wait lets the panel
-  disappear before the screen is frozen or captured). A non-zero exit
-  other than 3 → `noctalia.notifyError("valw", <stderr's last line>)`.
+  disappear before the screen is frozen or captured). Captures run with
+  `noctalia.runStream` (stderr folded in, the exit status echoed last):
+  `runAsync` with a callback kills its command after 5 s, and a region,
+  a zoom or the timer can take longer. A non-zero exit other than 3 →
+  `noctalia.notifyError("valw", <valw's error: line>)`.
 - Below: "Timer" `ui.select` with `Off`, `5 s`, `10 s` (from `timers`),
   and three `ui.toggle`s: "Show cursor", "Show preview", "Play sound".
-  A change re-renders at once and runs `valw toolbar --set <key>=<value>`;
-  a failure → `notifyError`.
+  A change re-renders at once and runs `valw toolbar --set` with every
+  choice (so two quick changes can't undo each other); a failure →
+  `notifyError`. `--state` and `--set` start no run log (they would push
+  the capture logs out).
 - Colours only by Noctalia role names (`primary`, `on_surface`,
   `outline`, …); no hex colours anywhere in the plugin.