diff --git a/.fallowrc.json b/.fallowrc.json
index 21746458c..b4f547005 100644
--- a/.fallowrc.json
+++ b/.fallowrc.json
@@ -2,16 +2,16 @@
   "$schema": "https://raw.githubusercontent.com/fallow-rs/fallow/main/schema.json",
   "entry": [
     "rslib.config.ts",
-    "src/index.ts",
-    "src/io.ts",
-    "src/artifacts.ts",
-    "src/metro.ts",
-    "src/remote-config.ts",
-    "src/install-source.ts",
-    "src/android-adb.ts",
-    "src/contracts.ts",
-    "src/selectors.ts",
-    "src/finders.ts",
+    "src/sdk/index.ts",
+    "src/sdk/io.ts",
+    "src/sdk/artifacts.ts",
+    "src/sdk/metro.ts",
+    "src/sdk/remote-config.ts",
+    "src/sdk/install-source.ts",
+    "src/sdk/android-adb.ts",
+    "src/sdk/contracts.ts",
+    "src/sdk/selectors.ts",
+    "src/sdk/finders.ts",
     "src/bin.ts",
     "src/client/companion-tunnel.ts",
     "src/daemon.ts",
diff --git a/rslib.config.ts b/rslib.config.ts
index 69ecf7967..8856012c1 100644
--- a/rslib.config.ts
+++ b/rslib.config.ts
@@ -22,17 +22,17 @@ export default defineConfig({
       },
       source: {
         entry: {
-          index: 'src/index.ts',
-          io: 'src/io.ts',
-          artifacts: 'src/artifacts.ts',
-          batch: 'src/batch.ts',
-          metro: 'src/metro.ts',
-          'remote-config': 'src/remote-config.ts',
-          'install-source': 'src/install-source.ts',
-          'android-adb': 'src/android-adb.ts',
-          contracts: 'src/contracts.ts',
-          selectors: 'src/selectors.ts',
-          finders: 'src/finders.ts',
+          index: 'src/sdk/index.ts',
+          io: 'src/sdk/io.ts',
+          artifacts: 'src/sdk/artifacts.ts',
+          batch: 'src/sdk/batch.ts',
+          metro: 'src/sdk/metro.ts',
+          'remote-config': 'src/sdk/remote-config.ts',
+          'install-source': 'src/sdk/install-source.ts',
+          'android-adb': 'src/sdk/android-adb.ts',
+          contracts: 'src/sdk/contracts.ts',
+          selectors: 'src/sdk/selectors.ts',
+          finders: 'src/sdk/finders.ts',
           'internal/bin': 'src/bin.ts',
           'internal/companion-tunnel': 'src/client/companion-tunnel.ts',
           'internal/daemon': 'src/daemon.ts',
diff --git a/src/__tests__/android-adb-public.test.ts b/src/__tests__/android-adb-public.test.ts
index 3fbdcf508..3bccd8930 100644
--- a/src/__tests__/android-adb-public.test.ts
+++ b/src/__tests__/android-adb-public.test.ts
@@ -2,7 +2,7 @@ import assert from 'node:assert/strict';
 import { test } from 'vitest';
 
 test('public android-adb entrypoint exposes helpers but not resolver internals', async () => {
-  const androidAdb = await import('../android-adb.ts');
+  const androidAdb = await import('../sdk/android-adb.ts');
 
   assert.equal(typeof androidAdb.createAndroidPortReverseManager, 'function');
   assert.equal(typeof androidAdb.captureAndroidLogcatWithAdb, 'function');
diff --git a/src/__tests__/contracts-schema-public.test.ts b/src/__tests__/contracts-schema-public.test.ts
index 716f5ade2..17ade2692 100644
--- a/src/__tests__/contracts-schema-public.test.ts
+++ b/src/__tests__/contracts-schema-public.test.ts
@@ -2,7 +2,7 @@ import { test } from 'vitest';
 import assert from 'node:assert/strict';
 import fs from 'node:fs';
 import path from 'node:path';
-import { AppError } from '../index.ts';
+import { AppError } from '../sdk/index.ts';
 import type { CommandResult } from '../core/command-descriptor/command-result.ts';
 import type { AppStateCommandResult } from '../contracts/app-state.ts';
 import type { ClipboardCommandResult } from '../contracts/clipboard.ts';
@@ -14,7 +14,7 @@ import type {
   RotateCommandResult,
 } from '../contracts/navigation.ts';
 import type { ViewportCommandResult } from '../contracts/viewport.ts';
-import { centerOfRect, defaultHintForCode, normalizeError } from '../contracts.ts';
+import { centerOfRect, defaultHintForCode, normalizeError } from '../sdk/contracts.ts';
 import {
   daemonCommandRequestSchema,
   daemonRuntimeSchema,
@@ -48,7 +48,7 @@ test('public contracts error helpers do not load diagnostics module', () => {
 });
 
 test('public contract facade does not expose parser schemas', async () => {
-  const publicContracts = (await import('../contracts.ts')) as Record<string, unknown>;
+  const publicContracts = (await import('../sdk/contracts.ts')) as Record<string, unknown>;
 
   assert.equal(publicContracts.daemonCommandRequestSchema, undefined);
   assert.equal(publicContracts.daemonRuntimeSchema, undefined);
diff --git a/src/__tests__/install-source-public.test.ts b/src/__tests__/install-source-public.test.ts
index 8fffa4cb9..bc388482f 100644
--- a/src/__tests__/install-source-public.test.ts
+++ b/src/__tests__/install-source-public.test.ts
@@ -1,7 +1,7 @@
 import assert from 'node:assert/strict';
 import { test } from 'vitest';
 
-import { isTrustedInstallSourceUrl, validateDownloadSourceUrl } from '../install-source.ts';
+import { isTrustedInstallSourceUrl, validateDownloadSourceUrl } from '../sdk/install-source.ts';
 
 test('public install-source entrypoint re-exports pure helpers', () => {
   assert.equal(
diff --git a/src/__tests__/metro-protocol-public.test.ts b/src/__tests__/metro-protocol-public.test.ts
index b41e34ce0..32dd658cc 100644
--- a/src/__tests__/metro-protocol-public.test.ts
+++ b/src/__tests__/metro-protocol-public.test.ts
@@ -6,7 +6,7 @@ import {
   type MetroBridgeDescriptor,
   type MetroTunnelRequestMessage,
   type MetroTunnelResponseMessage,
-} from '../metro.ts';
+} from '../sdk/metro.ts';
 
 // Type-only contract fixtures — these verify that the public subpath types
 // remain structurally stable. A rename or breaking shape change will fail
diff --git a/src/__tests__/metro-public.test.ts b/src/__tests__/metro-public.test.ts
index f244c689f..1713c7386 100644
--- a/src/__tests__/metro-public.test.ts
+++ b/src/__tests__/metro-public.test.ts
@@ -1,6 +1,6 @@
 import { test } from 'vitest';
 import assert from 'node:assert/strict';
-import { buildBundleUrl, normalizeBaseUrl, resolveRuntimeTransport } from '../metro.ts';
+import { buildBundleUrl, normalizeBaseUrl, resolveRuntimeTransport } from '../sdk/metro.ts';
 
 test('public metro entrypoint exposes url and transport helpers', () => {
   assert.equal(normalizeBaseUrl('https://bridge.example.test///'), 'https://bridge.example.test');
@@ -22,7 +22,7 @@ test('public metro entrypoint exposes url and transport helpers', () => {
 });
 
 test('public metro entrypoint does not expose runtime hint builders', async () => {
-  const metro = (await import('../metro.ts')) as Record<string, unknown>;
+  const metro = (await import('../sdk/metro.ts')) as Record<string, unknown>;
 
   assert.equal(metro.buildIosRuntimeHints, undefined);
   assert.equal(metro.buildAndroidRuntimeHints, undefined);
diff --git a/src/__tests__/selectors-public.test.ts b/src/__tests__/selectors-public.test.ts
index fb90c0c10..24d1ae62f 100644
--- a/src/__tests__/selectors-public.test.ts
+++ b/src/__tests__/selectors-public.test.ts
@@ -11,7 +11,7 @@ import {
   tryParseSelectorChain,
   type SelectorChain,
   type SelectorDiagnostics,
-} from '../selectors.ts';
+} from '../sdk/selectors.ts';
 import type { SnapshotNode } from '../kernel/snapshot.ts';
 
 const nodes: SnapshotNode[] = [
diff --git a/src/artifacts.ts b/src/artifacts.ts
deleted file mode 100644
index 34ed3c323..000000000
--- a/src/artifacts.ts
+++ /dev/null
@@ -1 +0,0 @@
-export { resolveAndroidArchivePackageName } from './platforms/android/manifest.ts';
diff --git a/src/batch.ts b/src/batch.ts
deleted file mode 100644
index 72a2ca394..000000000
--- a/src/batch.ts
+++ /dev/null
@@ -1 +0,0 @@
-export { runBatch } from './core/batch.ts';
diff --git a/src/commands/batch/public.test.ts b/src/commands/batch/public.test.ts
index 9ad03732e..ac2ba8bd4 100644
--- a/src/commands/batch/public.test.ts
+++ b/src/commands/batch/public.test.ts
@@ -1,6 +1,6 @@
 import { test } from 'vitest';
 import assert from 'node:assert/strict';
-import { runBatch } from '../../batch.ts';
+import { runBatch } from '../../sdk/batch.ts';
 import type { DaemonRequest } from '../../kernel/contracts.ts';
 
 test('public batch entrypoint exports daemon-compatible orchestration helpers', async () => {
diff --git a/src/commands/interaction/runtime/resolution.ts b/src/commands/interaction/runtime/resolution.ts
index 3cf7984de..818020847 100644
--- a/src/commands/interaction/runtime/resolution.ts
+++ b/src/commands/interaction/runtime/resolution.ts
@@ -3,11 +3,8 @@ import type { Point, SnapshotNode, SnapshotState } from '../../../kernel/snapsho
 import { findNodeByRef, normalizeRef } from '../../../kernel/snapshot.ts';
 import { resolveRectCenter } from '../../../utils/rect-center.ts';
 import type { AgentDeviceRuntime, CommandContext } from '../../../runtime-contract.ts';
-import {
-  formatSelectorFailure,
-  parseSelectorChain,
-  resolveSelectorChain,
-} from '../../../selectors.ts';
+import { parseSelectorChain } from '../../../utils/selectors-parse.ts';
+import { formatSelectorFailure, resolveSelectorChain } from '../../../daemon/selectors.ts';
 import { buildSelectorChainForNode } from '../../../utils/selector-build.ts';
 import { findNodeByLabel, resolveRefLabel } from '../../../snapshot/snapshot-processing.ts';
 import {
diff --git a/src/commands/interaction/runtime/selector-read.ts b/src/commands/interaction/runtime/selector-read.ts
index c3a9f388a..46ed16bd7 100644
--- a/src/commands/interaction/runtime/selector-read.ts
+++ b/src/commands/interaction/runtime/selector-read.ts
@@ -12,13 +12,12 @@ import {
 } from '../../../snapshot/snapshot-quality.ts';
 import type { AgentDeviceRuntime, CommandContext } from '../../../runtime-contract.ts';
 import { AppError } from '../../../kernel/errors.ts';
+import { parseSelectorChain, type SelectorChain } from '../../../utils/selectors-parse.ts';
 import {
   findSelectorChainMatch,
   formatSelectorFailure,
-  parseSelectorChain,
   resolveSelectorChain,
-  type SelectorChain,
-} from '../../../selectors.ts';
+} from '../../../daemon/selectors.ts';
 import { buildSelectorChainForNode } from '../../../utils/selector-build.ts';
 import {
   evaluateIsPredicate,
diff --git a/src/daemon/handlers/find.ts b/src/daemon/handlers/find.ts
index 359c28c0e..1ea642cd9 100644
--- a/src/daemon/handlers/find.ts
+++ b/src/daemon/handlers/find.ts
@@ -27,7 +27,8 @@ import {
   isSparseSnapshotQualityVerdict,
   type SnapshotQualityVerdict,
 } from '../../snapshot/snapshot-quality.ts';
-import { resolveSelectorChain, type SelectorChain } from '../../selectors.ts';
+import { resolveSelectorChain } from '../selectors.ts';
+import type { SelectorChain } from '../../utils/selectors-parse.ts';
 
 export { parseFindArgs } from '../../utils/finders.ts';
 
diff --git a/src/install-source.ts b/src/install-source.ts
deleted file mode 100644
index 00630f22e..000000000
--- a/src/install-source.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export {
-  isTrustedInstallSourceUrl,
-  validateDownloadSourceUrl,
-} from './platforms/install-source.ts';
-
-export type { MaterializeInstallSource } from './platforms/install-source.ts';
diff --git a/src/metro.ts b/src/metro.ts
deleted file mode 100644
index e14514b5c..000000000
--- a/src/metro.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-export { buildBundleUrl, normalizeBaseUrl } from './utils/url.ts';
-export type {
-  MetroBridgeDescriptor,
-  MetroTunnelRequestMessage,
-  MetroTunnelResponseMessage,
-} from './metro/metro.ts';
-export { resolveRuntimeTransport } from './metro/metro.ts';
diff --git a/src/remote-config.ts b/src/remote-config.ts
deleted file mode 100644
index d37e46c06..000000000
--- a/src/remote-config.ts
+++ /dev/null
@@ -1 +0,0 @@
-export type { RemoteConfigProfile } from './remote/remote-config-schema.ts';
diff --git a/src/android-adb.ts b/src/sdk/android-adb.ts
similarity index 60%
rename from src/android-adb.ts
rename to src/sdk/android-adb.ts
index 3f8c03259..15b77d151 100644
--- a/src/android-adb.ts
+++ b/src/sdk/android-adb.ts
@@ -3,19 +3,19 @@ export {
   type AndroidAdbExecutor,
   type AndroidAdbExecutorOptions,
   type AndroidPortReverseEndpoint,
-} from './platforms/android/adb-executor.ts';
+} from '../platforms/android/adb-executor.ts';
 export {
   getAndroidAppStateWithAdb,
   listAndroidAppsWithAdb,
-} from './platforms/android/app-helpers.ts';
+} from '../platforms/android/app-helpers.ts';
 export {
   forceStopAndroidAppWithAdb,
   openAndroidAppWithAdb,
-} from './platforms/android/app-control.ts';
-export { captureAndroidLogcatWithAdb } from './platforms/android/logcat.ts';
+} from '../platforms/android/app-control.ts';
+export { captureAndroidLogcatWithAdb } from '../platforms/android/logcat.ts';
 export {
   dismissAndroidKeyboardWithAdb,
   getAndroidKeyboardStatusWithAdb,
   readAndroidClipboardWithAdb,
   writeAndroidClipboardWithAdb,
-} from './platforms/android/device-input-state.ts';
+} from '../platforms/android/device-input-state.ts';
diff --git a/src/sdk/artifacts.ts b/src/sdk/artifacts.ts
new file mode 100644
index 000000000..3a35c610d
--- /dev/null
+++ b/src/sdk/artifacts.ts
@@ -0,0 +1 @@
+export { resolveAndroidArchivePackageName } from '../platforms/android/manifest.ts';
diff --git a/src/sdk/batch.ts b/src/sdk/batch.ts
new file mode 100644
index 000000000..89fc6e59c
--- /dev/null
+++ b/src/sdk/batch.ts
@@ -0,0 +1 @@
+export { runBatch } from '../core/batch.ts';
diff --git a/src/contracts.ts b/src/sdk/contracts.ts
similarity index 84%
rename from src/contracts.ts
rename to src/sdk/contracts.ts
index 65c21ca01..c27a28516 100644
--- a/src/contracts.ts
+++ b/src/sdk/contracts.ts
@@ -11,6 +11,6 @@ export type {
   LeaseHeartbeatPayload,
   LeaseReleasePayload,
   SessionRuntimeHints,
-} from './kernel/contracts.ts';
+} from '../kernel/contracts.ts';
 
-export { centerOfRect, defaultHintForCode, normalizeError } from './kernel/contracts.ts';
+export { centerOfRect, defaultHintForCode, normalizeError } from '../kernel/contracts.ts';
diff --git a/src/sdk/finders.ts b/src/sdk/finders.ts
new file mode 100644
index 000000000..94f69878d
--- /dev/null
+++ b/src/sdk/finders.ts
@@ -0,0 +1 @@
+export * from '../finders.ts';
diff --git a/src/index.ts b/src/sdk/index.ts
similarity index 57%
rename from src/index.ts
rename to src/sdk/index.ts
index 6e366e0a8..d54d503ff 100644
--- a/src/index.ts
+++ b/src/sdk/index.ts
@@ -1,7 +1,7 @@
-export { createAgentDeviceClient } from './client/client.ts';
-export { createLocalArtifactAdapter } from './io.ts';
-export { AppError, isAgentDeviceError, normalizeAgentDeviceError } from './kernel/errors.ts';
-export { centerOfRect } from './kernel/snapshot.ts';
+export { createAgentDeviceClient } from '../client/client.ts';
+export { createLocalArtifactAdapter } from '../io.ts';
+export { AppError, isAgentDeviceError, normalizeAgentDeviceError } from '../kernel/errors.ts';
+export { centerOfRect } from '../kernel/snapshot.ts';
 
 export type {
   AgentDeviceDaemonTransport,
@@ -18,6 +18,6 @@ export type {
   RotateCommandOptions,
   RotateCommandResult,
   ScrollOptions,
-} from './client/client.ts';
+} from '../client/client.ts';
 
-export type { SnapshotNode } from './kernel/snapshot.ts';
+export type { SnapshotNode } from '../kernel/snapshot.ts';
diff --git a/src/sdk/install-source.ts b/src/sdk/install-source.ts
new file mode 100644
index 000000000..5f40d186c
--- /dev/null
+++ b/src/sdk/install-source.ts
@@ -0,0 +1,6 @@
+export {
+  isTrustedInstallSourceUrl,
+  validateDownloadSourceUrl,
+} from '../platforms/install-source.ts';
+
+export type { MaterializeInstallSource } from '../platforms/install-source.ts';
diff --git a/src/sdk/io.ts b/src/sdk/io.ts
new file mode 100644
index 000000000..54269c252
--- /dev/null
+++ b/src/sdk/io.ts
@@ -0,0 +1 @@
+export * from '../io.ts';
diff --git a/src/sdk/metro.ts b/src/sdk/metro.ts
new file mode 100644
index 000000000..ca63b1f2f
--- /dev/null
+++ b/src/sdk/metro.ts
@@ -0,0 +1,7 @@
+export { buildBundleUrl, normalizeBaseUrl } from '../utils/url.ts';
+export type {
+  MetroBridgeDescriptor,
+  MetroTunnelRequestMessage,
+  MetroTunnelResponseMessage,
+} from '../metro/metro.ts';
+export { resolveRuntimeTransport } from '../metro/metro.ts';
diff --git a/src/sdk/remote-config.ts b/src/sdk/remote-config.ts
new file mode 100644
index 000000000..38c618345
--- /dev/null
+++ b/src/sdk/remote-config.ts
@@ -0,0 +1 @@
+export type { RemoteConfigProfile } from '../remote/remote-config-schema.ts';
diff --git a/src/sdk/selectors.ts b/src/sdk/selectors.ts
new file mode 100644
index 000000000..c182e3e67
--- /dev/null
+++ b/src/sdk/selectors.ts
@@ -0,0 +1,15 @@
+export type { SelectorChain } from '../utils/selectors-parse.ts';
+export type { SelectorDiagnostics } from '../daemon/selectors.ts';
+
+export {
+  isSelectorToken,
+  parseSelectorChain,
+  tryParseSelectorChain,
+} from '../utils/selectors-parse.ts';
+export {
+  findSelectorChainMatch,
+  formatSelectorFailure,
+  isNodeEditable,
+  isNodeVisible,
+  resolveSelectorChain,
+} from '../daemon/selectors.ts';
diff --git a/src/selectors.ts b/src/selectors.ts
deleted file mode 100644
index 30d6ad476..000000000
--- a/src/selectors.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-export type { SelectorChain } from './utils/selectors-parse.ts';
-export type { SelectorDiagnostics } from './daemon/selectors.ts';
-
-export {
-  isSelectorToken,
-  parseSelectorChain,
-  tryParseSelectorChain,
-} from './utils/selectors-parse.ts';
-export {
-  findSelectorChainMatch,
-  formatSelectorFailure,
-  isNodeEditable,
-  isNodeVisible,
-  resolveSelectorChain,
-} from './daemon/selectors.ts';
diff --git a/vitest.config.ts b/vitest.config.ts
index 95cacb716..e04e6f301 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -29,16 +29,11 @@ export default defineConfig({
         'src/**/__tests__/**',
         'src/**/*-types.ts',
         'src/**/types.ts',
-        'src/android-adb.ts',
-        'src/artifacts.ts',
-        'src/batch.ts',
+        'src/sdk/**',
         'src/bin.ts',
         'src/client/client-types.ts',
         'src/core/interactor-types.ts',
-        'src/index.ts',
-        'src/install-source.ts',
         'src/remote/remote-config.ts',
-        'src/selectors.ts',
       ],
     },
   },