fix(haivemind): clear blank Textual Select

Textual 8 treats Select.BLANK as False, causing ConfigScreen to crash.

.beads/issues.jsonl

@@ -1,3 +1,5 @@
+{"_type":"issue","id":"nix-overlay-dv3","title":"Fix Config screen crash on F2","description":"F2 opens ConfigScreen then Textual raises InvalidSelectValueError because _refresh_aggregator_dropdown assigns Select.BLANK, resolved as False, instead of clearing selection.\\n\\nAcceptance: Config screen opens with saved consensus configuration; regression covers no selected aggregator; targeted tests pass.","status":"in_progress","priority":1,"issue_type":"bug","assignee":"Alexander Miroshnichenko","owner":"alex@millerson.name","created_at":"2026-08-20T11:34:03Z","created_by":"Alexander Miroshnichenko","updated_at":"2026-08-20T11:34:07Z","started_at":"2026-08-20T11:34:07Z","dependency_count":0,"dependent_count":0,"comment_count":0}
+{"_type":"issue","id":"nix-overlay-a9m","title":"Fix haivemind startup after MainScreen mount","description":"Restore deferred engine startup while preserving MainScreen widget lookup fix.","status":"closed","priority":1,"issue_type":"bug","assignee":"Alexander Miroshnichenko","owner":"alex@millerson.name","created_at":"2026-08-20T11:20:36Z","created_by":"Alexander Miroshnichenko","updated_at":"2026-08-20T11:21:43Z","started_at":"2026-08-20T11:20:43Z","closed_at":"2026-08-20T11:21:43Z","close_reason":"Restored engine startup after MainScreen mount and verified package build.","dependency_count":0,"dependent_count":0,"comment_count":0}
 {"_type":"issue","id":"nix-overlay-q00","title":"Add haivemind package","description":"Package https://github.com/dev-boz/haivemind in the Nix overlay, document it, validate the build, and complete repository workflow.","status":"closed","priority":2,"issue_type":"task","assignee":"Alexander Miroshnichenko","owner":"alex@millerson.name","created_at":"2026-08-08T16:32:37Z","created_by":"Alexander Miroshnichenko","updated_at":"2026-08-08T16:36:41Z","started_at":"2026-08-08T16:33:00Z","closed_at":"2026-08-08T16:36:41Z","close_reason":"Closed","dependency_count":0,"dependent_count":0,"comment_count":0}
 {"_type":"issue","id":"nix-overlay-67e","title":"Add traycer package","description":"Add new package for traycer from https://github.com/traycerai/traycer. Steps: research repo build system, create packages/traycer/, stage with git add, test nix build, update README.","status":"closed","priority":2,"issue_type":"task","assignee":"Alexander Miroshnichenko","owner":"alex@millerson.name","created_at":"2026-08-07T08:59:25Z","created_by":"Alexander Miroshnichenko","updated_at":"2026-08-07T09:22:07Z","started_at":"2026-08-07T09:00:29Z","closed_at":"2026-08-07T09:22:07Z","close_reason":"Traycer package added, built, pushed","dependency_count":0,"dependent_count":0,"comment_count":0}
 {"_type":"issue","id":"nix-overlay-2gf","title":"Update all packages to latest versions","description":"## Why\\nUser request: update every package in the overlay to its latest upstream version.\\n\\n## What\\nBump version + src hash (and cargoHash for Rust) in each packages/\u003cname\u003e/package.nix, update README table if needed, verify builds.\\n\\n## Acceptance\\n- Every package builds with nix build .#\u003cname\u003e\\n- README reflects new versions\\n- Changes committed and pushed","notes":"All packages updated and built successfully. Commit 1f3f0f468bdd on local main. PUSH BLOCKED: git.millerson.name:22002 and DoltHub unreachable from this network (SSH connect timeout). Re-run git push + bd dolt push when network is back, then close.","status":"closed","priority":2,"issue_type":"task","assignee":"Alexander Miroshnichenko","owner":"alex@millerson.name","created_at":"2026-08-07T07:22:50Z","created_by":"Alexander Miroshnichenko","updated_at":"2026-08-07T13:17:34Z","started_at":"2026-08-07T07:22:55Z","closed_at":"2026-08-07T13:17:34Z","close_reason":"All packages updated to latest versions, verified building, pushed to origin","dependency_count":0,"dependent_count":0,"comment_count":0}

packages/haivemind/fix-chat-log-race.patch

@@ -0,0 +1,459 @@
+--- a/haivemind_tui.py
++++ b/haivemind_tui.py
+@@ -1197,0 +1198,8 @@
++    def on_mount(self) -> None:
++        app = self.app
++        if (
++            getattr(app, "_prompt", None) is not None
++            and getattr(app, "_config", None) is not None
++        ):
++            app.start_run(app._prompt, app._config)
++
+@@ -1220,13 +1220,13 @@
+         self._engine: HaivemindEngine | None = None
+         self._run_started = False
+         self._run_start_time: float = 0.0
++        self._main_screen = None
+ 
+     def on_mount(self) -> None:
+-        self.push_screen(MainScreen())
++        self._main_screen = MainScreen()
++        self.push_screen(self._main_screen)
+         self.set_interval(0.15, self._tick_spinner)
+-        if self._prompt is not None and self._config is not None:
+-            self.start_run(self._prompt, self._config)
+-        else:
++        if self._prompt is None or self._config is None:
+             self.push_screen(ConfigScreen())
+ 
+     def start_run(self, prompt: str, config: HaivemindConfig) -> None:
+@@ -1303,7 +1303,7 @@
+     def _tick_spinner(self) -> None:
+         _advance_spinner()
+         try:
+-            hbar = self.query_one("#health-bar", ModelHealthBar)
++            hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+             if "streaming" in hbar._model_status.values():
+                 hbar._refresh()
+         except NoMatches:
+@@ -1315,20 +1315,20 @@
+     def _on_probe_start(self) -> None:
+         import time as _time
+         self._run_start_time = _time.time()
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         chat.add_summary("[bold yellow]Probing models...[/]")
+         if self._config is not None:
+-            hbar = self.query_one("#health-bar", ModelHealthBar)
++            hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+             hbar.set_models(self._config.models)
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.consensus_info = "probing"
+         header.progress_pct = 0.0
+ 
+     @on(ProbeResult)
+     def _on_probe_result(self, event: ProbeResult) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "done" if event.ok else "failed")
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         if event.ok:
+             color = hbar.model_color(event.model)
+             chat.add_summary(f"[{color}][probe] ok: {event.model}[/]")
+@@ -1339,44 +1339,44 @@
+ 
+     @on(ProbeDone)
+     def _on_probe_done(self, event: ProbeDone) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         chat.add_summary(
+             f"[bold yellow]Probe complete:[/] {len(event.healthy)} healthy, "
+             f"{len(event.failures)} failed"
+         )
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.consensus_info = ""
+         if event.healthy:
+-            hbar = self.query_one("#health-bar", ModelHealthBar)
++            hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+             hbar.set_models(event.healthy)
+-            theatre = self.query_one("#theatre-container", TheatrePanel)
++            theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+             theatre.update_layout(event.healthy, hbar._model_colors)
+ 
+     @on(RoundStart)
+     def _on_round_start(self, event: RoundStart) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         chat.add_summary(f"\n[bold cyan]\u2500\u2500 Round {event.round_idx}/{event.total} \u2500\u2500[/]")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.round_info = f"hAIvemind \u2502 Round {event.round_idx}/{event.total}"
+         header.consensus_info = ""
+         try:
+-            theatre = self.query_one("#theatre-container", TheatrePanel)
++            theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+             theatre.clear_all()
+         except NoMatches:
+             pass
+ 
+     @on(ModelStart)
+     def _on_model_start(self, event: ModelStart) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "streaming")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         total = len(hbar._model_status) if hbar._model_status else 0
+         done_count = sum(
+             1 for s in hbar._model_status.values() if s in ("streaming", "done")
+         )
+         header.model_info = f"Models: {done_count}/{total}"
+         try:
+-            theatre = self.query_one("#theatre-container", TheatrePanel)
++            theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+             active = [
+                 m for m, s in hbar._model_status.items() if s != "dropped"
+             ]
+@@ -1386,27 +1386,27 @@
+ 
+     @on(ModelStream)
+     def _on_model_stream(self, event: ModelStream) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         color = hbar.model_color(event.model)
+         t = event.fragment.strip()
+         if t:
+             chat.add_summary(f"[{color}][{event.model}][/] {t}")
+             try:
+-                theatre = self.query_one("#theatre-container", TheatrePanel)
++                theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+                 theatre.stream_to_model(event.model, event.fragment)
+             except NoMatches:
+                 pass
+ 
+     @on(ModelDone)
+     def _on_model_done(self, event: ModelDone) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         ar = event.agent_round
+         if ar.error and ar.error not in ("stderr",):
+             hbar.set_status(event.model, "failed")
+         else:
+             hbar.set_status(event.model, "done")
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         color = hbar.model_color(event.model)
+         if ar.has_valid_draft:
+             chat.add_summary(
+@@ -1419,14 +1419,14 @@
+ 
+     @on(ModelDropped)
+     def _on_model_dropped(self, event: ModelDropped) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "dropped")
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         chat.add_summary(
+             f"[red]\u26a0 {event.model} dropped:[/] {event.reason}"
+         )
+         try:
+-            theatre = self.query_one("#theatre-container", TheatrePanel)
++            theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+             remaining = [
+                 m for m, s in hbar._model_status.items() if s != "dropped"
+             ]
+@@ -1436,7 +1436,7 @@
+ 
+     @on(RoundDone)
+     def _on_round_done(self, event: RoundDone) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         dur = event.record.get("duration_s", 0)
+         chat.add_summary(
+             f"[dim]\u2500\u2500 end round {event.round_idx} ({dur}s) \u2500\u2500[/]"
+@@ -1446,15 +1446,15 @@
+             best_sim = _compute_best_similarity(drafts)
+             threshold = self._config.threshold if self._config else 0.75
+             pct = min(1.0, best_sim / threshold) if threshold > 0 else 0.0
+-            header = self.query_one("#header-bar", HeaderBar)
++            header = self._main_screen.query_one("#header-bar", HeaderBar)
+             header.progress_pct = pct
+             header.consensus_info = f"sim: {best_sim:.2f}"
+ 
+     @on(Consensus)
+     def _on_consensus(self, event: Consensus) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        header = self.query_one("#header-bar", HeaderBar)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         total_models = len(hbar._model_status) if hbar._model_status else 0
+         import time as _time
+         elapsed = (
+@@ -1493,9 +1493,9 @@
+ 
+     @on(Fallback)
+     def _on_fallback(self, event: Fallback) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        header = self.query_one("#header-bar", HeaderBar)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         total_models = len(hbar._model_status) if hbar._model_status else 0
+         header.consensus_info = "fallback"
+         header.progress_pct = 0.0
+@@ -1518,30 +1518,30 @@
+ 
+     @on(EngineError)
+     def _on_engine_error(self, event: EngineError) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         chat.add_summary(f"[red]Error:[/] {event.message}")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.consensus_info = "error"
+ 
+     @on(EngineLog)
+     def _on_engine_log(self, event: EngineLog) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         chat.add_summary(event.message)
+ 
+     @on(MoaRefStart)
+     def _on_moa_ref_start(self, event: MoaRefStart) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "streaming")
+         color = hbar.model_color(event.model)
+         chat.add_summary(f"[{color}]\U0001f4e1 [ref] {event.model} analyzing...[/]")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.round_info = "hAIvemind \u2502 MoA \u2502 References"
+ 
+     @on(MoaRefDone)
+     def _on_moa_ref_done(self, event: MoaRefDone) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
+-        chat = self.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         color = hbar.model_color(event.model)
+         if event.err and not event.raw.strip():
+             hbar.set_status(event.model, "failed")
+@@ -1552,32 +1552,32 @@
+ 
+     @on(MoaRefStream)
+     def _on_moa_ref_stream(self, event: MoaRefStream) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         color = hbar.model_color(event.model)
+         t = event.fragment.strip()
+         if t:
+             chat.add_summary(f"[{color}][ref:{event.model}][/] {t}")
+             try:
+-                theatre = self.query_one("#theatre-container", TheatrePanel)
++                theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+                 theatre.stream_to_model(event.model, event.fragment)
+             except NoMatches:
+                 pass
+ 
+     @on(MoaAggStart)
+     def _on_moa_agg_start(self, event: MoaAggStart) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "streaming")
+         color = hbar.model_color(event.model)
+         chat.add_summary(f"\n[bold {color}]\U0001f9e0 [aggregator] {event.model} synthesizing...[/]")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.round_info = "hAIvemind \u2502 MoA \u2502 Aggregating"
+ 
+     @on(MoaAggDone)
+     def _on_moa_agg_done(self, event: MoaAggDone) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
+-        chat = self.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         color = hbar.model_color(event.model)
+         if event.raw.strip():
+             hbar.set_status(event.model, "done")
+@@ -1588,14 +1588,14 @@
+ 
+     @on(MoaAggStream)
+     def _on_moa_agg_stream(self, event: MoaAggStream) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         color = hbar.model_color(event.model)
+         t = event.fragment.strip()
+         if t:
+             chat.add_summary(f"[{color}][agg:{event.model}][/] {t}")
+             try:
+-                theatre = self.query_one("#theatre-container", TheatrePanel)
++                theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+                 theatre.stream_to_model(event.model, event.fragment)
+             except NoMatches:
+                 pass
+@@ -1604,18 +1604,18 @@
+ 
+     @on(FusionPanelStart)
+     def _on_fusion_panel_start(self, event: FusionPanelStart) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "streaming")
+         color = hbar.model_color(event.model)
+         chat.add_summary(f"[{color}]\U0001f52c [panel] {event.model} analyzing...[/]")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.round_info = "hAIvemind \u2502 Fusion \u2502 Panel"
+ 
+     @on(FusionPanelDone)
+     def _on_fusion_panel_done(self, event: FusionPanelDone) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
+-        chat = self.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         color = hbar.model_color(event.model)
+         if event.err and not event.raw.strip():
+             hbar.set_status(event.model, "failed")
+@@ -1626,32 +1626,32 @@
+ 
+     @on(FusionPanelStream)
+     def _on_fusion_panel_stream(self, event: FusionPanelStream) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         color = hbar.model_color(event.model)
+         t = event.fragment.strip()
+         if t:
+             chat.add_summary(f"[{color}][panel:{event.model}][/] {t}")
+             try:
+-                theatre = self.query_one("#theatre-container", TheatrePanel)
++                theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+                 theatre.stream_to_model(event.model, event.fragment)
+             except NoMatches:
+                 pass
+ 
+     @on(FusionJudgeStart)
+     def _on_fusion_judge_start(self, event: FusionJudgeStart) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "streaming")
+         color = hbar.model_color(event.model)
+         chat.add_summary(f"\n[bold {color}]\u2696\ufe0f [judge] {event.model} analyzing...[/]")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.round_info = "hAIvemind \u2502 Fusion \u2502 Judging"
+ 
+     @on(FusionJudgeDone)
+     def _on_fusion_judge_done(self, event: FusionJudgeDone) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
+-        chat = self.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         color = hbar.model_color(event.model)
+         if event.raw.strip():
+             hbar.set_status(event.model, "done")
+@@ -1662,32 +1662,32 @@
+ 
+     @on(FusionJudgeStream)
+     def _on_fusion_judge_stream(self, event: FusionJudgeStream) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         color = hbar.model_color(event.model)
+         t = event.fragment.strip()
+         if t:
+             chat.add_summary(f"[{color}][judge:{event.model}][/] {t}")
+             try:
+-                theatre = self.query_one("#theatre-container", TheatrePanel)
++                theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+                 theatre.stream_to_model(event.model, event.fragment)
+             except NoMatches:
+                 pass
+ 
+     @on(FusionSynthStart)
+     def _on_fusion_synth_start(self, event: FusionSynthStart) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         hbar.set_status(event.model, "streaming")
+         color = hbar.model_color(event.model)
+         chat.add_summary(f"\n[bold {color}]\u270d\ufe0f [synth] {event.model} writing final answer...[/]")
+-        header = self.query_one("#header-bar", HeaderBar)
++        header = self._main_screen.query_one("#header-bar", HeaderBar)
+         header.round_info = "hAIvemind \u2502 Fusion \u2502 Synthesizing"
+ 
+     @on(FusionSynthDone)
+     def _on_fusion_synth_done(self, event: FusionSynthDone) -> None:
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
+-        chat = self.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         color = hbar.model_color(event.model)
+         if event.raw.strip():
+             hbar.set_status(event.model, "done")
+@@ -1698,14 +1698,14 @@
+ 
+     @on(FusionSynthStream)
+     def _on_fusion_synth_stream(self, event: FusionSynthStream) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
+-        hbar = self.query_one("#health-bar", ModelHealthBar)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
++        hbar = self._main_screen.query_one("#health-bar", ModelHealthBar)
+         color = hbar.model_color(event.model)
+         t = event.fragment.strip()
+         if t:
+             chat.add_summary(f"[{color}][synth:{event.model}][/] {t}")
+             try:
+-                theatre = self.query_one("#theatre-container", TheatrePanel)
++                theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+                 theatre.stream_to_model(event.model, event.fragment)
+             except NoMatches:
+                 pass
+@@ -1720,7 +1720,7 @@
+ 
+     def action_toggle_theatre(self) -> None:
+         try:
+-            tc = self.query_one("#theatre-container")
++            tc = self._main_screen.query_one("#theatre-container")
+             if tc.has_class("visible"):
+                 tc.remove_class("visible")
+             else:
+@@ -1734,13 +1734,13 @@
+ 
+     def action_clear_theatre(self) -> None:
+         try:
+-            theatre = self.query_one("#theatre-container", TheatrePanel)
++            theatre = self._main_screen.query_one("#theatre-container", TheatrePanel)
+             theatre.clear_all()
+         except NoMatches:
+             pass
+ 
+     def action_show_artifacts(self) -> None:
+-        chat = self.query_one("#chat-log", ChatLog)
++        chat = self._main_screen.query_one("#chat-log", ChatLog)
+         if self._engine and self._engine.run_dir:
+             chat.add_summary(f"[bold]Artifacts:[/] {self._engine.run_dir}")
+         else:

packages/haivemind/package.nix

@@ -24,6 +24,16 @@ python3Packages.buildPythonApplication rec {
     textual
   ];
 
+  patches = [
+    ./fix-chat-log-race.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace haivemind_tui.py \
+      --replace-fail "sel.value = Select.BLANK" "sel.clear()" \
+      --replace-fail "v is Select.BLANK" "v is Select.NULL"
+  '';
+
   doCheck = false;
   pythonImportsCheck = [
     "haivemind"