fix(orchestration): give an OpenCode worker its task only once OpenCode can submit it

src/main/daemon/serialize-grid-transcript-replay.test.ts

@@ -40,6 +40,15 @@ const KNOWN_PREEXISTING_I2_FAILURES: Record<string, number> = {
   'opencode-1-18-32-timed-boot-slow': 16,
   'opencode-1-18-32-timed-first-launch': 16,
   'opencode-2-0-18-timed-boot-hidden-pane': 14,
+  // STA-9359 OpenCode 2 captures, serializer untouched: every background diff is the live pen's
+  // panel colour on restored cells, plus the rows kept below the source after a shrink.
+  'opencode-2-0-14-timed-cold-standalone': 4,
+  'opencode-2-0-21-timed-cold-standalone': 36,
+  'opencode-2-0-21-timed-cold-standalone-hidden-pane': 6,
+  'opencode-2-0-21-timed-natural-load-enter-dropped': 12,
+  'opencode-cmd-2-0-21-timed-warm-server': 21,
+  // The same, plus the cursor one column short after a shrink and the pen's bold bit on a glyph.
+  'opencode-2-0-21-timed-narrow-pane': 8,
   // Shrink leaves the cursor one column short; also present in the pre-Qoder serializer.
   'qoder-no-account': 2,
   'qoder-ready': 2,

src/main/runtime/__fixtures__/opencode-2-0-14-timed-cold-standalone.meta.json

@@ -0,0 +1,9 @@
+{
+  "capturedAt": "2026-10-04T05:18:50.064162Z",
+  "platform": "darwin",
+  "command": ["opencode", "--standalone"],
+  "cols": 120,
+  "rows": 40,
+  "note": "opencode v2.0.14 (Homebrew opencode-v2) on a macOS laptop, 120x40, alternate screen; a cross-version check for the agent-row signal. Recorded on the laptop with a Python PTY recorder that stamps each read with its ms since spawn; --standalone private server (cold), model opencode/muse-spark-1.3-contributor-free via OPENCODE_CONFIG_CONTENT, every ORCA_* variable stripped, no input. Box cursor at 1366 ms, agent/model row at 1408 ms. The footer path was replaced on the laptop with the same-length ~/projects/demo-01/... . <name>.timing.json holds each PTY read as [ms since spawn, UTF-16 length] and recordedUntilMs (the last read; the recorder stopped there).",
+  "exitCode": null
+}

src/main/runtime/__fixtures__/opencode-2-0-14-timed-cold-standalone.timing.json

@@ -0,0 +1 @@
+{"recordedUntilMs":1561,"chunks":[[307,280],[307,37],[307,8],[609,1024],[609,1024],[609,1024],[609,1024],[609,1024],[609,577],[1319,1024],[1319,1024],[1319,1024],[1319,1024],[1319,1024],[1320,817],[1325,13],[1366,900],[1366,900],[1366,358],[1376,100],[1408,388],[1425,527],[1442,663],[1459,666],[1476,696],[1493,661],[1510,627],[1527,486],[1544,412],[1561,378]]}

src/main/runtime/__fixtures__/opencode-2-0-21-timed-cold-standalone-hidden-pane.meta.json

@@ -0,0 +1,9 @@
+{
+  "capturedAt": "2026-10-04T05:13:03.308914Z",
+  "platform": "darwin",
+  "command": ["opencode", "--standalone"],
+  "cols": 120,
+  "rows": 40,
+  "note": "opencode v2.0.21 (Homebrew opencode-v2) on macOS 26 arm64, 120x40, alternate screen. Recorded with the timed Python PTY driver (each read stamped with ms since spawn; terminal queries answered like Orca's pane), env -i with an isolated HOME and XDG dirs (no credentials; OpenCode Zen's free models), OPENCODE_DISABLE_AUTOUPDATE=1, OPENCODE_CONFIG_CONTENT {\"autoupdate\":false}, no ORCA_* vars; version and binary sha256 unchanged before and after. <name>.timing.json holds each PTY read as [ms since spawn, UTF-16 length] and recordedUntilMs. Why this run: the same cold --standalone start answered like a hidden Orca pane (responder 'headless': silent on OSC colour queries). No input typed.",
+  "exitCode": null
+}

src/main/runtime/__fixtures__/opencode-2-0-21-timed-cold-standalone-hidden-pane.timing.json

@@ -0,0 +1 @@
+{"recordedUntilMs":11423.8,"chunks":[[241.4,312],[242.6,37],[242.8,1024],[243.1,1024],[243.3,1024],[243.6,1024],[243.9,1024],[244.1,1024],[244.4,141],[261.2,1024],[261.6,1024],[261.9,1024],[262.2,1024],[262.6,1024],[263.0,937],[1267.3,1024],[1268.0,1024],[1268.6,1024],[1269.2,1024],[1269.7,1024],[1270.1,1024],[1270.6,353],[1275.2,13],[1313.7,934],[1314.2,938],[1314.6,835],[1331.9,173],[1347.7,476],[1364.9,476],[1382.0,481],[1399.7,490],[1418.0,491],[1435.8,497],[1453.5,497],[1470.7,497],[1489.3,497]]}

src/main/runtime/__fixtures__/opencode-2-0-21-timed-cold-standalone.meta.json

@@ -0,0 +1,9 @@
+{
+  "capturedAt": "2026-10-04T05:12:27.181737Z",
+  "platform": "darwin",
+  "command": ["opencode", "--standalone"],
+  "cols": 120,
+  "rows": 40,
+  "note": "opencode v2.0.21 (Homebrew opencode-v2) on macOS 26 arm64, 120x40, alternate screen. Recorded with the timed Python PTY driver (each read stamped with ms since spawn; terminal queries answered like Orca's pane), env -i with an isolated HOME and XDG dirs (no credentials; OpenCode Zen's free models), OPENCODE_DISABLE_AUTOUPDATE=1, OPENCODE_CONFIG_CONTENT {\"autoupdate\":false}, no ORCA_* vars; version and binary sha256 unchanged before and after. <name>.timing.json holds each PTY read as [ms since spawn, UTF-16 length] and recordedUntilMs. Why this run: a cold start of a fresh private server (--standalone, as the opencode2 row launches); the agent/model row under the input box ('<agent> \u00b7 <model>') is painted 47 ms after the box. Responder 'xterm' (Orca's visible pane). No input typed.",
+  "exitCode": null
+}

src/main/runtime/__fixtures__/opencode-2-0-21-timed-cold-standalone.timing.json

@@ -0,0 +1 @@
+{"recordedUntilMs":15442.9,"chunks":[[294.0,280],[295.2,37],[296.0,16],[296.1,16],[296.2,16],[296.2,32],[296.2,24],[296.2,24],[296.3,24],[296.3,36],[296.4,72],[304.5,1024],[304.8,1024],[305.1,1024],[305.4,1024],[305.7,1024],[306.3,1024],[306.5,353],[308.7,13],[341.4,934],[341.8,938],[342.1,835],[356.6,173],[389.4,218],[407.9,314],[429.0,314],[447.9,319],[466.4,325],[484.7,326],[502.8,326],[520.8,326],[538.9,326],[746.5,265]]}

src/main/runtime/__fixtures__/opencode-2-0-21-timed-cold-standalone.txt

@@ -0,0 +1 @@
+[?2031h]10;?]11;?[>0q[?25lP+q4d73\[?1016$p[?2027$p[?2031$p[?1004$p[?2004$p[?2026$p[?u]99;i=opentui-notifications:p=?;\]1337;Capabilities\_Gi=31337,s=1,v=1,a=q,t=d,f=24;AAAA\]66;w=1; \]66;s=2; \[?1049h[>4;1m[?2027h[?2004h[?1000h[?1002h[?1003h[?1006h[?2027h[?2004h[?2027h[?2004h[?2027h[?2004h[?2027h[?2004h[?2027h[?2004h[?2027h[?2004h[?1004h[?2027h[?2004h[?1004h[?2027h[?2004h[?1004h[>4;0m[>5u[?2027h[?2004h[?1004h[?2027h[?2004h[?1004h[?2027h[?2004h[?1004h[?2027h[?2004h[?1004h[?2026h[?25l                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                [?2026l]0;OpenCode[?2026h[?25l                                ▄     █▀▀█ █▀▀█ █▀▀█ █▀▀▄█▀▀▀ █▀▀█ █▀▀█ █▀▀██  █ █  █ █▀▀▀ █  ██    █  █ █  █ █▀▀▀▀▀▀▀ █▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀┃                                                                          ┃  Ask anything… "Fix a TODO in the codebase"                              ┃                                                                          ┃                                                                          ╹▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀/Users/uuuuu/orca-...xxxxxx/capture/workshift+tab agentsctrl+p commands2.0.21]12;#eeeeee[1 q[?25h[?2026l[?2026h[?25l…/uuuuu/xxxxxxx/xxxxxxxx/capture/work  [?25h[?2026l[?2026h[?25l·LongCat 2.5 Preview FreeOpenCode Zen[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25l┃┃┃┃Build╹[?25h[?2026l[?2026h[?25lFledge Alpha Free OpenCode Zen       [?25h[?2026l

src/main/runtime/__fixtures__/opencode-2-0-21-timed-enter-after-agent-row.meta.json

@@ -0,0 +1,9 @@
+{
+  "capturedAt": "2026-10-04T05:49:55.163902Z",
+  "platform": "darwin",
+  "command": ["opencode", "--standalone"],
+  "cols": 120,
+  "rows": 40,
+  "note": "opencode v2.0.21 (Homebrew opencode-v2) on macOS 26 arm64, 120x40, alternate screen. Recorded with the timed Python PTY driver (each read stamped with ms since spawn; terminal queries answered like Orca's pane). One natural cold start, no other capture running; load average at start 2.76 / 4.63 / 7.28. --standalone with the user's own login and plugins read in place and the model opencode-go/deepseek-v4.1-flash set through OPENCODE_CONFIG_CONTENT (nothing on disk written by the recorder); OPENCODE_DISABLE_AUTOUPDATE=1, no ORCA_* vars; version and binary sha256 unchanged before and after. An 82-line, 6.6 KB brief was bracketed-pasted the moment the agent/model row painted (393 ms; box cursor at 273 ms) and Enter was sent 537 ms later (promptSentAtMs), Orca's submit delay of 500 ms plus paste time. OpenCode submitted it: the composer cleared and the brief and the reply were painted. <name>.timing.json holds each PTY read as [ms since spawn, UTF-16 length] and recordedUntilMs.",
+  "exitCode": null
+}