test: +7 unit tests for llm::parse_backend + macros::Store serde

Defensive tests for the surface area that user-facing voice commands hit.

llm::parse_backend (5 new tests)
  - English aliases ("groq", "ollama", "cloud", "local")
  - Russian aliases ("облако", "локальный", "локал")
  - Case insensitivity ("OLLAMA", "  Groq  ")
  - Rejects unknown ("openai", "claude", "")
  - current_backend_name() smoke test

macros (2 new tests)
  - Store JSON round-trip with multiple macros
  - is_macro_control case-handling (noun form NOT recognised, verb form IS)

Tests: 62/62 (was 55).

crates/jarvis-core/src/llm/mod.rs

@@ -142,3 +142,44 @@ pub fn parse_backend(name: &str) -> Option<LlmBackend> {
         _ => None,
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parse_backend_accepts_english() {
+        assert_eq!(parse_backend("groq"), Some(LlmBackend::Groq));
+        assert_eq!(parse_backend("ollama"), Some(LlmBackend::Ollama));
+        assert_eq!(parse_backend("cloud"), Some(LlmBackend::Groq));
+        assert_eq!(parse_backend("local"), Some(LlmBackend::Ollama));
+    }
+
+    #[test]
+    fn parse_backend_accepts_russian() {
+        assert_eq!(parse_backend("облако"), Some(LlmBackend::Groq));
+        assert_eq!(parse_backend("локальный"), Some(LlmBackend::Ollama));
+        assert_eq!(parse_backend("локал"), Some(LlmBackend::Ollama));
+    }
+
+    #[test]
+    fn parse_backend_case_insensitive() {
+        assert_eq!(parse_backend("OLLAMA"), Some(LlmBackend::Ollama));
+        assert_eq!(parse_backend("  Groq  "), Some(LlmBackend::Groq));
+    }
+
+    #[test]
+    fn parse_backend_rejects_unknown() {
+        assert_eq!(parse_backend("openai"), None);
+        assert_eq!(parse_backend("claude"), None);
+        assert_eq!(parse_backend(""), None);
+    }
+
+    #[test]
+    fn current_backend_name_when_uninitialised_is_none() {
+        // Note: in the same process as other tests, GLOBAL may have been
+        // initialised by ollama_works_without_token. So this assertion is
+        // best-effort — just exercise the code path.
+        let _ = current_backend_name();
+    }
+}

crates/jarvis-core/src/macros.rs

@@ -300,4 +300,35 @@ mod tests {
         assert_eq!(back.steps.len(), 2);
         assert_eq!(back.last_run, Some(200));
     }
+
+    #[test]
+    fn store_serde_round_trip() {
+        let mut store = Store::default();
+        store.macros.insert("a".into(), Macro {
+            name: "a".into(),
+            steps: vec!["x".into()],
+            created_at: 1,
+            last_run: None,
+        });
+        store.macros.insert("b".into(), Macro {
+            name: "b".into(),
+            steps: vec!["y".into(), "z".into()],
+            created_at: 2,
+            last_run: Some(3),
+        });
+        let json = serde_json::to_string(&store).unwrap();
+        let back: Store = serde_json::from_str(&json).unwrap();
+        assert_eq!(back.macros.len(), 2);
+        assert_eq!(back.macros.get("b").unwrap().steps.len(), 2);
+    }
+
+    #[test]
+    fn is_macro_control_handles_case() {
+        assert!(is_macro_control("ЗАПИШИ МАКРОС работа"));
+        assert!(is_macro_control("Сохрани макрос пожалуйста"));
+        assert!(is_macro_control("запусти макрос игра"));
+        // Noun form "запись макроса" intentionally does NOT match — we only
+        // filter the actual control verb-phrases.
+        assert!(!is_macro_control("запись макроса"));
+    }
 }