feat(capabilities): add isV013OrLater convenience predicate

Surfaces a v0.12 → v0.13 boundary check that doesn't proxy through any
specific feature flag. Used by WS-8 (redaction default-state hint copy,
"v0.13 features active" Settings badge in iOS WS-9) where the call site
isn't actually about a specific feature — it's about whether the host is
on the v0.13 line.

Equivalent to any individual v0.13 flag (e.g. `hasGoals`); both resolve
to the same `>= 0.13.0` threshold. Convenience exists to keep call sites
honest: `caps.isV013OrLater` reads better than `caps.hasGoals` when the
context isn't goal-related.

Tests: 4 new fixtures covering v0.13 host (true), v0.12 host (false),
empty/undetected (false), and v0.14 host (true). 19 total tests in the
suite, all passing.

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

scarf/Packages/ScarfCore/Sources/ScarfCore/Services/HermesCapabilities.swift

@@ -210,6 +210,16 @@ public struct HermesCapabilities: Sendable, Equatable {
     /// PluginsView surfaces it as a documented hook in plugin metadata.
     public var hasTransformLLMOutputHook: Bool { atLeastSemver(0, 13, 0) }
 
+    // MARK: Convenience predicates
+
+    /// Whether the connected host is on the v0.13 line or newer. Convenience
+    /// for UI copy that needs to switch on the v0.12 → v0.13 boundary without
+    /// proxying through a feature-specific flag (e.g. "v0.13 features active"
+    /// badges, redaction default-state hints). Equivalent to any individual
+    /// v0.13 flag; prefer this when the call site isn't actually about a
+    /// specific feature.
+    public var isV013OrLater: Bool { atLeastSemver(0, 13, 0) }
+
     private func atLeastSemver(_ major: Int, _ minor: Int, _ patch: Int) -> Bool {
         guard let s = semver else { return false }
         return s >= SemVer(major: major, minor: minor, patch: patch)

scarf/Packages/ScarfCore/Tests/ScarfCoreTests/HermesCapabilitiesTests.swift

@@ -202,4 +202,26 @@ import Foundation
         #expect(caps.hasKanbanDiagnostics)
         #expect(caps.hasGoogleChatPlatform)
     }
+
+    // MARK: - isV013OrLater convenience predicate
+
+    @Test func isV013OrLater_v013HostTrue() {
+        let caps = HermesCapabilities.parseLine("Hermes Agent v0.13.0 (2026.5.7)")
+        #expect(caps.isV013OrLater)
+    }
+
+    @Test func isV013OrLater_v012HostFalse() {
+        let caps = HermesCapabilities.parseLine("Hermes Agent v0.12.0 (2026.4.30)")
+        #expect(!caps.isV013OrLater)
+    }
+
+    @Test func isV013OrLater_emptyFalse() {
+        let caps = HermesCapabilities.empty
+        #expect(!caps.isV013OrLater)
+    }
+
+    @Test func isV013OrLater_v014HostTrue() {
+        let caps = HermesCapabilities.parseLine("Hermes Agent v0.14.0 (2026.7.1)")
+        #expect(caps.isV013OrLater)
+    }
 }