fix(marketing): send Android visitors to Google Play

apps/marketing/src/pages/index.astro

@@ -67,6 +67,7 @@ const mobileEndorsementRows = [
           <svg class="dl-icon dl-icon--apple" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 814 1000" aria-hidden="true"><path fill="currentColor" d="M788.1 340.9c-5.8 4.5-108.2 62.2-108.2 190.5 0 148.4 130.3 200.9 134.2 202.2-.6 3.2-20.7 71.9-68.7 141.9-42.8 61.6-87.5 123.1-155.5 123.1s-85.5-39.5-164-39.5c-76.5 0-103.7 40.8-165.9 40.8s-105.6-57-155.5-127C46.7 790.7 0 663 0 541.8c0-194.4 126.4-297.5 250.8-297.5 66.1 0 121.2 43.4 162.7 43.4 39.5 0 101.1-46 176.3-46 28.5 0 130.9 2.6 198.3 99.2zm-234-181.5c31.1-36.9 53.1-88.1 53.1-139.3 0-7.1-.6-14.3-1.9-20.1-50.6 1.9-110.8 33.7-147.1 75.8-28.5 32.4-55.1 83.6-55.1 135.5 0 7.8 1.3 15.6 1.9 18.1 3.2.6 8.4 1.3 13.6 1.3 45.4 0 102.5-30.4 135.5-71.3z"/></svg>
           <svg class="dl-icon dl-icon--windows" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 88 88" aria-hidden="true"><path fill="currentColor" d="m0 12.402 35.687-4.86.016 34.423-35.67.203zm35.67 33.529.028 34.453L.028 75.48.026 45.7zm4.326-39.025L87.314 0v41.527l-47.318.376zm47.329 39.349-.011 41.34-47.318-6.678-.066-34.739z"/></svg>
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0-.13-.02-.136-.068-.01-.066.088-.133.15-.133.08-.031.184-.047.259-.005.019.009.036.03.03.05v.02h.003z"/></svg>
+          <svg class="dl-icon dl-icon--google-play" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="m22.018 13.298-3.919 2.218-3.515-3.493 3.543-3.521 3.891 2.202a1.49 1.49 0 0 1 0 2.594zM1.337.924a1.486 1.486 0 0 0-.112.568v21.017c0 .217.045.419.124.6l11.155-11.087L1.337.924zm12.207 10.065 3.258-3.238L3.45.195a1.466 1.466 0 0 0-.946-.179l11.04 10.973zm0 2.067-11 10.933c.298.036.612-.016.906-.183l13.324-7.54-3.23-3.21z"/></svg>
           <span id="download-label">Download for macOS</span>
         </a>
         <a class="hero-source-link" href={GITHUB_REPOSITORY_URL} target="_blank" rel="noopener noreferrer">
@@ -415,11 +416,14 @@ const mobileEndorsementRows = [
 <script>
   import { fetchLatestRelease, RELEASES_URL, type ReleaseAsset } from "../lib/releases";
   import { startHomeMotion } from "../lib/homeMotion";
+  import { ANDROID_PLAY_STORE_URL } from "../lib/site";
 
-  type Platform = { os: "mac" | "win" | "linux"; label: string };
+  type Platform = { os: "mac" | "win" | "linux" | "android"; label: string };
 
   function detectPlatform(): Platform | null {
     const ua = navigator.userAgent;
+    // Match Android first because Android browsers also include Linux in their user agent.
+    if (/Android/i.test(ua)) return { os: "android", label: "Get it on Google Play" };
     if (/Win/i.test(ua)) return { os: "win", label: "Download for Windows" };
     if (/Mac/i.test(ua)) return { os: "mac", label: "Download for macOS" };
     if (/Linux/i.test(ua)) return { os: "linux", label: "Download for Linux" };
@@ -453,6 +457,15 @@ const mobileEndorsementRows = [
     if (label) label.textContent = platform.label;
     if (ctaLabel) ctaLabel.textContent = platform.label;
     if (kbd && platform.os !== "mac") kbd.textContent = "Ctrl ⏎";
+    if (platform.os === "android") {
+      for (const androidBtn of [btn, ctaBtn]) {
+        if (!androidBtn) continue;
+        androidBtn.href = ANDROID_PLAY_STORE_URL;
+        androidBtn.target = "_blank";
+        androidBtn.rel = "noopener noreferrer";
+      }
+      return;
+    }
 
     try {
       const release = await fetchLatestRelease();
@@ -650,6 +663,7 @@ const mobileEndorsementRows = [
   :global([data-platform="mac"]) .dl-icon--apple { display: block; }
   :global([data-platform="win"]) .dl-icon--windows { display: block; }
   :global([data-platform="linux"]) .dl-icon--linux { display: block; }
+  :global([data-platform="android"]) .dl-icon--google-play { display: block; }
   :global(html:not([data-platform])) .dl-icon--apple { display: block; }
 
   /* Marks enter once, then drift while visible and lean toward the pointer. */

apps/server/src/orchestration-v2/ContextHandoffDelivery.ts

@@ -19,6 +19,7 @@ export const deliverContextHandoffs = Effect.fn("orchestrationV2.deliverContextH
     readonly providerThread: OrchestrationV2ProviderThread;
     readonly budget: number | Effect.Effect<number, BudgetError>;
     readonly deferInline?: boolean;
+    readonly deferIfOverBudget?: boolean;
     readonly alreadyDeliveredItemIds: ReadonlySet<string>;
     readonly inject?: (
       history: ProviderAdapter.ProviderAdapterV2HistoricalContext,
@@ -72,6 +73,13 @@ export const deliverContextHandoffs = Effect.fn("orchestrationV2.deliverContextH
     });
     if (historyCost(selected.messages, selected.context) > budget) {
       if (input.deferInline) return { context: "", delivered: Effect.void, unsent: Effect.void };
+      // The native transcript already contains this thread's conversation. If
+      // its remaining context is too small for the recovery wrapper, let the
+      // provider handle the current request against that transcript instead of
+      // failing before the provider sees it. Leave the handoff pending so a
+      // later turn with more room can still recover the omitted app history.
+      if (input.deferIfOverBudget)
+        return { context: "", delivered: Effect.void, unsent: Effect.void };
       return yield* new ContextHandoffBudgetError();
     }
     const omittedItemIds = new Set(selected.omittedItemIds);

apps/server/src/orchestration-v2/ProviderTurnStartService.ts

@@ -5,6 +5,7 @@ import {
   latestProviderTurnForAttempt,
   type OrchestrationV2DomainEvent,
   type OrchestrationV2ExecutionNode,
+  type OrchestrationV2ContextHandoff,
   type OrchestrationV2ProviderThread,
   type OrchestrationV2Run,
   type OrchestrationV2RunAttempt,
@@ -282,14 +283,7 @@ export const layer: Layer.Layer<
                   source.id === handoff.targetRunId &&
                   (source.status === "failed" ||
                     source.status === "interrupted" ||
-                    (source.status === "completed" &&
-                      handoff.delivery === undefined &&
-                      projection.messages.some(
-                        (message) =>
-                          message.id === source.userMessageId &&
-                          message.attachments.length === 0 &&
-                          message.text.trim().toLowerCase() === "/compact",
-                      ))),
+                    (source.status === "completed" && handoff.delivery === undefined)),
               ))),
       );
       const nativeForkTransfer = projection.contextTransfers.find(
@@ -1107,10 +1101,15 @@ export const layer: Layer.Layer<
           )
           .map((source) => source.id),
       );
+      let turnStartHistory: ReadonlyArray<OrchestrationV2TurnItem> | undefined;
+      const loadTurnStartHistory = Effect.gen(function* () {
+        turnStartHistory ??= yield* projectionStore.getTurnStartHistory(input.threadId);
+        return turnStartHistory;
+      });
       // Legacy attempts lack native ids; exclude recovered attachments absent from the replacement thread.
       const nativeContextEstimate = Effect.gen(function* () {
         return sameNativeThread
-          ? (yield* projectionStore.getTurnStartHistory(input.threadId)).reduce((sum, item) => {
+          ? (yield* loadTurnStartHistory).reduce((sum, item) => {
               if (
                 item.runId === run.id ||
                 (item.runId !== null &&
@@ -1145,6 +1144,40 @@ export const layer: Layer.Layer<
         ...runningProviderThread,
         contextUsage: handoffUsage,
       };
+      const nativeThreadHasTurns =
+        nativeInputRunIds.size > 0 ||
+        (legacyInputRunIds.size > 0 &&
+          sameNativeThread &&
+          !acceptedAttempts.some((source) => source.nativeThreadId !== undefined));
+      // A turn in this native thread is not enough: another provider's handoff
+      // may contain work the native transcript has never seen.
+      const itemIsInNativeThread = (item: {
+        readonly threadId: string;
+        readonly providerThreadId: string | null;
+        readonly runId: string | null;
+      }) =>
+        item.threadId === projection.thread.id &&
+        item.providerThreadId === providerThread.id &&
+        item.runId !== null &&
+        nativeInputRunIds.has(item.runId);
+      const handoffIsAlreadyInNativeThread = (
+        handoff: OrchestrationV2ContextHandoff,
+        sourceItemsById: ReadonlyMap<string, OrchestrationV2TurnItem>,
+      ) => {
+        const history = handoff.history;
+        if (!handoff.fromProviderThreadIds.includes(providerThread.id) || history === undefined)
+          return false;
+        const omittedItemIds = history.omittedItemIds ?? [];
+        return (
+          (history.messages.length > 0 || omittedItemIds.length > 0) &&
+          history.omittedItems === omittedItemIds.length &&
+          history.messages.every(itemIsInNativeThread) &&
+          omittedItemIds.every((itemId) => {
+            const item = sourceItemsById.get(itemId);
+            return item !== undefined && itemIsInNativeThread(item);
+          })
+        );
+      };
       const missedRuns = projection.runs.filter(
         (source) =>
           source.ordinal < run.ordinal &&
@@ -1187,9 +1220,25 @@ export const layer: Layer.Layer<
                     createdAt: yield* DateTime.now,
                   }),
                 ];
+          const handoffsToDeliver = [...effectiveHandoffs, ...retryHandoff];
+          const canDeferHandoff =
+            sameNativeThread &&
+            nativeThreadHasTurns &&
+            missedItems.length === 0 &&
+            handoffsToDeliver.length > 0;
+          const sourceItemsById =
+            canDeferHandoff &&
+            handoffsToDeliver.some((handoff) => (handoff.history?.omittedItems ?? 0) > 0)
+              ? new Map((yield* loadTurnStartHistory).map((item) => [item.id, item] as const))
+              : new Map<string, OrchestrationV2TurnItem>();
           const delivery = yield* deliverContextHandoffs({
-            handoffs: [...effectiveHandoffs, ...retryHandoff],
+            handoffs: handoffsToDeliver,
             deferInline: compact,
+            deferIfOverBudget:
+              canDeferHandoff &&
+              handoffsToDeliver.every((handoff) =>
+                handoffIsAlreadyInNativeThread(handoff, sourceItemsById),
+              ),
             providerThread: runningProviderThread,
             budget: Effect.gen(function* () {
               return handoffBudget({
@@ -1313,11 +1362,7 @@ export const layer: Layer.Layer<
               .filter((turn) => turn.providerThreadId === providerThread.id)
               .map((turn) => turn.ordinal),
           ) + 1,
-        nativeThreadHasTurns:
-          nativeInputRunIds.size > 0 ||
-          (legacyInputRunIds.size > 0 &&
-            sameNativeThread &&
-            !acceptedAttempts.some((source) => source.nativeThreadId !== undefined)),
+        nativeThreadHasTurns,
         shouldStartProviderTurn: runControls.shouldStartProviderTurn,
         shouldFinalizeRun: runControls.shouldFinalizeRun,
         hasUnpairedRunInterruptRequest: runControls.hasUnpairedRunInterruptRequest,