Merge nucleic/plucky-opal-weasel into dev

NucleicRemote/NucleicRemote/Models/HostConnection.swift

@@ -124,6 +124,9 @@ final class HostConnection {
         var castsReceived: ([WireCast]) -> Void = { _ in }
         /// One catch-up batch for one (origin, channel) of the cast feed.
         var castCatchUp: (CastCatchUp) -> Void = { _ in }
+        /// A mesh-dispatch ack from this host (mesh dispatch) — RemoteStore correlates it by
+        /// `requestID` to resume the waiting `dispatchChatToMesh`.
+        var chatStarted: (WireChatStarted) -> Void = { _ in }
     }
     private let callbacks: Callbacks
 
@@ -677,10 +680,10 @@ final class HostConnection {
                 let result = await PhoneIntelligenceExecutor.execute(request)
                 self?.send(.intelligenceResult(result))
             }
-        case .chatStarted:
-            // Mesh-dispatch ack — the phone doesn't drive mesh dispatch yet (the Mac composer
-            // does); inert until the iOS "Auto (Mesh)" destination lands.
-            break
+        case .chatStarted(let outcome):
+            // Mesh-dispatch ack — up to RemoteStore's requestID correlation map (the "Auto
+            // (Mesh)" composer destination awaits it).
+            callbacks.chatStarted(outcome)
         case .casts(let batch):
             // Live mesh casts — up to the merged ledger (identity dedup across N connections).
             callbacks.castsReceived(batch.casts)

NucleicRemote/NucleicRemote/Models/RemoteStore.swift

@@ -80,6 +80,114 @@ final class RemoteStore: ObservableObject {
         UserDefaults.standard.set(feedLastSeenAt, forKey: "nucleic.feed.lastSeenAt")
     }
 
+    /// In-flight mesh dispatches awaiting their `chatStarted` ack, keyed by requestID.
+    private var chatStartedWaiters: [String: CheckedContinuation<WireChatStarted?, Never>] = [:]
+
+    /// The latest runner-presence card per host (mesh dispatch), decoded from the merged cast
+    /// ledger's `runner.presence` state channel — the dispatcher's candidate pool.
+    private var runnerPresenceByHost: [String: RunnerPresence] {
+        castLedger.stateValues(channel: MeshCastChannel.runnerPresence)
+            .compactMapValues { RunnerPresence.decode($0) }
+    }
+
+    /// Whether the composer should offer "Auto (Mesh)" for the project the phone has selected:
+    /// some connected host advertising `canAcknowledgeDispatch` (other than the project's own
+    /// owner) holds a matching repo. The descriptor comes from the owning host's presence card.
+    func meshDispatchAvailable(forProject projectID: ProjectID) -> Bool {
+        meshDispatchCandidates(forProject: projectID) != nil
+    }
+
+    /// Resolve the (descriptor, candidates) for a mesh dispatch, or nil when it isn't offerable.
+    private func meshDispatchCandidates(
+        forProject projectID: ProjectID
+    ) -> (descriptor: ProjectDescriptor, candidates: [MeshDispatchScorer.Candidate])? {
+        let presences = runnerPresenceByHost
+        // The chosen project belongs to one host; find its descriptor from that host's card.
+        guard let owner = connection(owningProject: projectID)?.hostID,
+              let descriptor = presences[owner]?.projects.first(where: { $0.projectID == projectID })
+        else { return nil }
+        var candidates: [MeshDispatchScorer.Candidate] = []
+        for (hostID, presence) in presences {
+            guard let conn = connections[hostID] else { continue }
+            candidates.append(MeshDispatchScorer.Candidate(
+                hostID: hostID, presence: presence,
+                live: conn.connectivity.isLive,
+                canAcknowledgeDispatch: conn.capabilities.canAcknowledgeDispatch))
+        }
+        // Offer only when at least one eligible host actually holds the repo.
+        guard !MeshDispatchScorer.rank(
+            candidates: candidates, project: descriptor, backend: nil).isEmpty
+        else { return nil }
+        return (descriptor, candidates)
+    }
+
+    /// Dispatch a new chat to the abstract **Mesh** destination from the phone: rank eligible
+    /// hosts by the shared scorer and try them in order, one at a time with a correlated,
+    /// idempotent ack (a timeout retries the same candidate once before moving on). On success
+    /// routes to the landed session. Mirrors `AppStore.dispatchChatToMesh`.
+    func dispatchChatToMesh(
+        projectID: ProjectID, message: String, model: String? = nil,
+        effort: String? = nil, auto: Bool? = nil
+    ) {
+        let text = message.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !text.isEmpty, let (descriptor, candidates) =
+            meshDispatchCandidates(forProject: projectID) else { return }
+        Task { @MainActor in
+            var excluded: Set<String> = []
+            var tried = 0
+            while true {
+                guard let pick = MeshDispatchScorer.rank(
+                    candidates: candidates, project: descriptor,
+                    backend: nil, excluding: excluded).first
+                else {
+                    showError(tried == 0
+                        ? "No mesh runner can take this chat right now."
+                        : "No mesh runner could take this chat (\(tried) tried).", sessionID: nil)
+                    return
+                }
+                tried += 1
+                // The phone hands over no clone URL, so every pick is a holder (non-nil id).
+                guard let targetProjectID = pick.projectID,
+                      let conn = connections[pick.hostID], conn.connectivity.isLive else {
+                    excluded.insert(pick.hostID); continue
+                }
+                let requestID = UUID().uuidString
+                let request = StartChatRequest(
+                    projectID: targetProjectID, message: text, model: model, effort: effort,
+                    auto: auto, requestID: requestID)
+                var outcome = await sendDispatch(request, on: conn, timeout: .seconds(10))
+                if outcome == nil {
+                    outcome = await sendDispatch(request, on: conn, timeout: .seconds(5))
+                }
+                if let sessionID = outcome?.sessionID {
+                    // The session lives on the target host; refresh its list and route to it.
+                    conn.send(.listSessions)
+                    conn.send(.listDashboard)
+                    route(to: sessionID)
+                    return
+                }
+                if let failure = outcome?.error {
+                    showError("\(conn.hostName): \(failure)", sessionID: nil)
+                }
+                excluded.insert(pick.hostID)
+            }
+        }
+    }
+
+    private func sendDispatch(
+        _ request: StartChatRequest, on conn: HostConnection, timeout: Duration
+    ) async -> WireChatStarted? {
+        guard let requestID = request.requestID else { return nil }
+        conn.send(.startChat(request))
+        return await withCheckedContinuation { continuation in
+            chatStartedWaiters[requestID] = continuation
+            Task { @MainActor in
+                try? await Task.sleep(for: timeout)
+                self.chatStartedWaiters.removeValue(forKey: requestID)?.resume(returning: nil)
+            }
+        }
+    }
+
     /// Apply freshly received casts (live or catch-up) and persist if anything changed.
     private func applyCasts(_ apply: (inout CastLedger) -> [WireCast]) {
         var ledger = castLedger
@@ -975,6 +1083,10 @@ final class RemoteStore: ObservableObject {
         cb.castCatchUp = { [weak self] batch in
             self?.applyCasts { $0.applyCatchUp(batch) }
         }
+        cb.chatStarted = { [weak self] outcome in
+            // Mesh dispatch: resume the waiting `dispatchChatToMesh` by requestID.
+            self?.chatStartedWaiters.removeValue(forKey: outcome.requestID)?.resume(returning: outcome)
+        }
         cb.meshRosterChanged = { [weak self] in
             // Mesh "join": a Mac was learned or revoked via gossip. Reconnect to every paired Mac
             // (connecting the newcomer) and drop any that left — without switching the active host.

NucleicRemote/NucleicRemote/Views/Composer.swift

@@ -18,6 +18,9 @@ struct StartChatComposer: View {
     /// project page's "+", so the chat always lands in that project.
     var lockedProject: WireProject? = nil
     @State private var projectID: ProjectID?
+    /// Mesh dispatch: run on the project's own Mac (false) or auto-route to the best eligible
+    /// mesh host (true). Shown only when a connected peer could actually take it.
+    @State private var runOnMesh = false
     @State private var autoOverride: Bool?
     @State private var model: String?
     @State private var effort = MobileEfforts.fallback
@@ -39,6 +42,11 @@ struct StartChatComposer: View {
         lockedProject ?? projects.first { $0.id == projectID }
     }
     private var controlled: Bool { selected?.isNucleicControlled ?? false }
+    /// Whether the "Run on: This Mac / Mesh" picker should appear for the current selection.
+    private var meshAvailable: Bool {
+        guard let id = selected?.id else { return false }
+        return store.meshDispatchAvailable(forProject: id)
+    }
     /// Auto-approve for the chat about to start: the user's choice off-control, but forced on for a
     /// Nucleic Control project. The host locks Auto on for those chats regardless of what the phone
     /// sends (they run autonomously — nvrsion needs it: see `AppStore.createSession`), so the
@@ -79,6 +87,23 @@ struct StartChatComposer: View {
                     ? "Auto-approve is always on for Nucleic Control chats — they run autonomously."
                     : "Auto-approve safe actions; destructive ones still ask.")
             }
+            // Mesh dispatch: when an eligible peer holds this repo, offer "Auto (Mesh)" so the
+            // chat routes to whichever host fits rather than always its own owner.
+            if meshAvailable {
+                Menu {
+                    Picker("Run on", selection: $runOnMesh) {
+                        Text("This Mac").tag(false)
+                        Text("Mesh (automatic)").tag(true)
+                    }
+                    .pickerStyle(.inline)
+                } label: {
+                    Label(
+                        runOnMesh ? "Mesh" : "This Mac",
+                        systemImage: runOnMesh ? "antenna.radiowaves.left.and.right" : "desktopcomputer")
+                        .font(.caption)
+                        .foregroundStyle(Palette.accent)
+                }
+            }
             HStack {
                 ModelMenu(model: $model, catalog: store.modelCatalog, backend: nil)
                 Spacer()
@@ -132,12 +157,20 @@ struct StartChatComposer: View {
                     .focused(focus)
                 Button {
                     if let project = selected {
+                        if runOnMesh && meshAvailable {
+                            // Mesh dispatch: route to the best eligible host (attachments can't
+                            // ride a dispatch, same as a remote start).
+                            store.dispatchChatToMesh(
+                                projectID: project.id, message: draft, model: model,
+                                effort: effort, auto: effectiveAuto)
+                        } else {
                             let branch = baseBranch.trimmingCharacters(in: .whitespaces)
                             store.startChat(
                                 in: project.id, message: draft, model: model, effort: effort,
                                 baseBranch: branch.isEmpty ? nil : branch,
                                 useWorktree: useWorktree, auto: effectiveAuto,
                                 attachments: attachments.wireAttachments)
+                        }
                         draft = ""
                         attachments = []
                         attachmentsOverflowed = false