refactor: rename project uatu -> sanderling (#24)

* refactor: rename Go module path uatu -> sanderling

Module path github.com/priyanshujain/uatu -> github.com/priyanshujain/sanderling,
including all imports and the proto go_package option. Generated .pb.go files
rewritten in-place; safe to regenerate with protoc later.

* chore(proto): regenerate driverpb after module path rename

The previous sed-based module rename corrupted the embedded descriptor
byte lengths. buf generate rewrites them cleanly.

* refactor: rename CLI binary uatu -> sanderling

Updates Makefile target + UATU_BIN var, .goreleaser project/build IDs,
.gitignore comment, and all user-facing strings in the CLI help text,
error messages, and tests. Binary is now bin/sanderling.

* refactor(sdk): rename Kotlin package dev.uatu.sdk -> dev.sanderling.sdk

Moves sdk/android/src/{main,test}/kotlin/dev/uatu -> dev/sanderling and
rewrites package declarations, imports, and the Gradle namespace. Class
names (Uatu, UatuRuntime) are renamed in a follow-up commit.

* refactor(sidecar): rename Kotlin package dev.uatu.sidecar -> dev.sanderling.sidecar

Moves sidecar/src/{main,test}/kotlin/dev/uatu -> dev/sanderling and
rewrites package declarations, imports, and the application mainClass.

* refactor: rename Uatu API surface -> Sanderling

- Kotlin: Uatu -> Sanderling, UatuRuntime -> SanderlingRuntime (+ files).
- JS host binding: globalThis.__uatu__ -> __sanderling__ (Go verifier,
  spec-api, tests).
- TS interface: UatuRuntime -> SanderlingRuntime; internal tags
  __uatuFormula / __uatuActionGenerator -> __sanderling* variants.
- Go trace: UatuVersion field + uatu_version JSON tag renamed.
- Socket naming: uatu-agent / uatu-agent-reader -> sanderling-agent*.
- Sample app, docs, inline-JS test strings updated to match.

* refactor(examples): rename examples/folio/uatu -> examples/folio/sanderling

Renames the example spec directory; updates justfile paths + gitignore
entries accordingly. Package.json name/description and @uatu/spec
dependency are renamed in the npm + docs commits.

* chore(build): rename gradle property + rootProject.name uatu -> sanderling

- Renames the uatu.version gradle property and all its -P references in
  Makefile, build.gradle.kts files, and .github/workflows/release.yml.
- settings.gradle.kts rootProject.name = "sanderling".
- Renames .env.local.example header + release-cli workflow job name.

* refactor(proto): rename proto package uatu.driver.v1 -> sanderling.driver.v1

Updates the proto package and java_package, regenerates driver.pb.go +
driver_grpc.pb.go, rewrites Kotlin imports and the gRPC ServiceName
assertion in driver_test.go.

* refactor: rename npm package @uatu/spec -> @sanderling/spec

Renames package name in pkg/spec-api/package.json + lockfile, all
consumer imports (examples/folio spec, testdata, verifier tests), the
esbuild alias in cmd/sanderling/test_run.go, and related doc references.

* docs: rename uatu -> sanderling in README, docs, and URLs

- README + docs/{manual,development}/*: narrative + GitHub + Pages URLs.
- POM + npm package.json repo/homepage/bugs URLs.
- .gitignore + embed_stub + Makefile-comment references updated to
  'make sanderling'.
- Minor narrative comments in cmd/sanderling/test_run.go and
  internal/inspect/server.go.

* refactor: rename remaining internal uatu strings -> sanderling

- SANDERLING_TEST_PHONE/OTP env vars (cmd + bundler tests).
- sanderling-sidecar runtime tmp dir + extracted JAR filename.
- Inspect web UI: @sanderling/inspect-web package, title, theme
  localStorage key, RunList empty-state copy, uatu_version TS field.
- Sample app storage key sanderling.ledger.v1.
- Test data: sanderling_test AVD name + com.example.sanderling_test.
- Release docs tarball name template.

internal/verifier/verifier_test.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/priyanshujain/uatu/internal/ltl"
+	"github.com/priyanshujain/sanderling/internal/ltl"
 )
 
 func newVerifier(t *testing.T, options ...Option) *Verifier {
@@ -27,18 +27,18 @@ func mustLoad(t *testing.T, verifier *Verifier, source string) {
 }
 
 const helloSpec = `
-const screen = __uatu__.extract(state => state.snapshots.screen ?? "");
-const balance = __uatu__.extract(state => state.snapshots["ledger.balance"] ?? 0);
+const screen = __sanderling__.extract(state => state.snapshots.screen ?? "");
+const balance = __sanderling__.extract(state => state.snapshots["ledger.balance"] ?? 0);
 
 globalThis.screen = screen;
 globalThis.balance = balance;
 
 globalThis.properties = {
-  balanceNonNegative: __uatu__.always(() => balance.current >= 0),
+  balanceNonNegative: __sanderling__.always(() => balance.current >= 0),
 };
 
-globalThis.actions = __uatu__.actions(() => [
-  __uatu__.tap({ on: "id:home_button" }),
+globalThis.actions = __sanderling__.actions(() => [
+  __sanderling__.tap({ on: "id:home_button" }),
 ]);
 `
 
@@ -135,9 +135,9 @@ func TestNextAction_FromActionsGenerator(t *testing.T) {
 func TestNextAction_WeightedSelectsByWeight(t *testing.T) {
 	verifier := newVerifier(t, WithRand(rand.New(rand.NewPCG(42, 0))))
 	mustLoad(t, verifier, `
-		const tapHome = __uatu__.actions(() => [__uatu__.tap({ on: "id:home" })]);
-		const tapAway = __uatu__.actions(() => [__uatu__.tap({ on: "id:away" })]);
-		globalThis.actions = __uatu__.weighted(
+		const tapHome = __sanderling__.actions(() => [__sanderling__.tap({ on: "id:home" })]);
+		const tapAway = __sanderling__.actions(() => [__sanderling__.tap({ on: "id:away" })]);
+		globalThis.actions = __sanderling__.weighted(
 			[1, tapHome],
 			[99, tapAway],
 		);
@@ -166,7 +166,7 @@ func TestNextAction_WeightedSelectsByWeight(t *testing.T) {
 func TestNextAction_EmptyGeneratorReturnsErrNoAction(t *testing.T) {
 	verifier := newVerifier(t)
 	mustLoad(t, verifier, `
-		globalThis.actions = __uatu__.actions(() => []);
+		globalThis.actions = __sanderling__.actions(() => []);
 	`)
 	_ = verifier.PushSnapshot(SnapshotInput{Snapshots: Snapshots{}})
 
@@ -179,8 +179,8 @@ func TestNextAction_EmptyGeneratorReturnsErrNoAction(t *testing.T) {
 func TestInputText_RoundTrip(t *testing.T) {
 	verifier := newVerifier(t)
 	mustLoad(t, verifier, `
-		globalThis.actions = __uatu__.actions(() => [
-			__uatu__.inputText({ into: "id:phone", text: "+919876543210" }),
+		globalThis.actions = __sanderling__.actions(() => [
+			__sanderling__.inputText({ into: "id:phone", text: "+919876543210" }),
 		]);
 	`)
 	_ = verifier.PushSnapshot(SnapshotInput{Snapshots: Snapshots{}})
@@ -200,7 +200,7 @@ func TestInputText_RoundTrip(t *testing.T) {
 func TestPushSnapshot_FeedsSnapshotsToExtractorState(t *testing.T) {
 	verifier := newVerifier(t)
 	mustLoad(t, verifier, `
-		globalThis.captured = __uatu__.extract(state => state.snapshots["k"]);
+		globalThis.captured = __sanderling__.extract(state => state.snapshots["k"]);
 	`)
 	if err := verifier.PushSnapshot(SnapshotInput{Snapshots: Snapshots{"k": json.RawMessage(`"hello"`)}}); err != nil {
 		t.Fatal(err)
@@ -222,7 +222,7 @@ func TestLoad_PropagatesSyntaxError(t *testing.T) {
 func TestEvaluateProperties_ThrowingPredicateDoesNotPanic(t *testing.T) {
 	const spec = `
 globalThis.properties = {
-  broken: __uatu__.always(() => { throw new Error("bad predicate"); }),
+  broken: __sanderling__.always(() => { throw new Error("bad predicate"); }),
 };
 `
 	verifier := newVerifier(t)