ζ-1 abgeschlossen: DeepLinkRouter + Web-Header-Hide

- DeepLinkRouter als pure-Logic-Enum aus RootView extrahiert
  (resolveToWebURL, isExplorePath, route)
- 11 DeepLinkRouterTests grün: custom-scheme, https passthrough,
  Erkunden-vs-Lesen-Routing, Substring-Guard
- WebShellScripts.hideWebHeader: WKUserScript injiziert at
  document.start CSS, das den zitare-Web-Header
  (body header:has(a.brand)) ausblendet. Native TabBar
  übernimmt globale Navigation, Content bleibt sichtbar.
- Simulator-Verifikation: Quote rendert ohne doppelte Nav-Leiste,
  17 (UI + Unit) Tests grün

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Tests/UnitTests/DeepLinkRouterTests.swift

@@ -0,0 +1,90 @@
+import XCTest
+@testable import ZitareNative
+
+final class DeepLinkRouterTests: XCTestCase {
+    let base = URL(string: "https://zitare.mana.how")!
+
+    // MARK: - resolveToWebURL
+
+    func test_resolve_customSchemeQuote() throws {
+        let url = try XCTUnwrap(URL(string: "zitare://quote/spitteler-schweizer-bleiben"))
+        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
+        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how/q/spitteler-schweizer-bleiben")
+    }
+
+    func test_resolve_customSchemeAuthor() throws {
+        let url = try XCTUnwrap(URL(string: "zitare://author/spitteler"))
+        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
+        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how/a/spitteler")
+    }
+
+    func test_resolve_customSchemeCollection() throws {
+        let url = try XCTUnwrap(URL(string: "zitare://collection/schweizer-stimmen"))
+        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
+        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how/c/schweizer-stimmen")
+    }
+
+    func test_resolve_unknownCustomSchemeFallsBackToBase() throws {
+        let url = try XCTUnwrap(URL(string: "zitare://unknown/foo"))
+        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
+        XCTAssertEqual(resolved.absoluteString, "https://zitare.mana.how")
+    }
+
+    func test_resolve_httpsPassesThrough() throws {
+        let url = try XCTUnwrap(URL(string: "https://zitare.com/q/keller-werke"))
+        let resolved = DeepLinkRouter.resolveToWebURL(url, base: base)
+        XCTAssertEqual(resolved.absoluteString, "https://zitare.com/q/keller-werke")
+    }
+
+    // MARK: - isExplorePath
+
+    func test_explore_root() {
+        XCTAssertTrue(DeepLinkRouter.isExplorePath("/explore"))
+    }
+
+    func test_explore_subpaths() {
+        for path in [
+            "/region/schweiz",
+            "/thema/philosophie",
+            "/rolle/schriftsteller",
+            "/epoche/moderne",
+            "/sprache/de",
+            "/search",
+            "/t/eigenstaendigkeit"
+        ] {
+            XCTAssertTrue(DeepLinkRouter.isExplorePath(path), "expected \(path) → explore")
+        }
+    }
+
+    func test_read_paths_are_not_explore() {
+        for path in ["/", "/q/spitteler-x", "/a/spitteler", "/c/schweizer", "/heute", "/random"] {
+            XCTAssertFalse(DeepLinkRouter.isExplorePath(path), "expected \(path) → read")
+        }
+    }
+
+    func test_explore_prefix_not_substring() {
+        // `/region` matcht, aber `/regions/...` darf NICHT matchen
+        XCTAssertTrue(DeepLinkRouter.isExplorePath("/region"))
+        XCTAssertTrue(DeepLinkRouter.isExplorePath("/region/schweiz"))
+        XCTAssertFalse(DeepLinkRouter.isExplorePath("/regions-overview"))
+    }
+
+    // MARK: - route (one-shot)
+
+    func test_route_customQuote_goesToRead() throws {
+        let result = try DeepLinkRouter.route(
+            XCTUnwrap(URL(string: "zitare://quote/x")),
+            base: base
+        )
+        XCTAssertEqual(result.url.path, "/q/x")
+        XCTAssertFalse(result.isExplore)
+    }
+
+    func test_route_httpsExplorePath_goesToExplore() throws {
+        let result = try DeepLinkRouter.route(
+            XCTUnwrap(URL(string: "https://zitare.mana.how/region/schweiz")),
+            base: base
+        )
+        XCTAssertTrue(result.isExplore)
+    }
+}