test+feat: +3 commands tests, +2 packs (self_check + ssl_check), env-race fix

Tests (112→115, +3)
  - commands::additional_tests::no_duplicate_command_ids_across_packs
    Catches accidental ID collisions across packs at PR time, with informative
    error pointing to both offending packs.
  - commands::additional_tests::no_empty_phrases_for_any_language
    Empty phrase strings would silently break voice matching; this rejects them.
  - commands::additional_tests::all_lua_packs_reference_existing_scripts
    Existing test of similar shape used path globbing; this version uses the
    parsed cmd.script field for a more precise error message.

Plus: runtime_config tests no longer race on shared env vars. Consolidated
parallel test bodies into single fn each with a Mutex guard. 5 tests → 3 tests
but each covers more states (default + custom + garbage in one body).

New packs

resources/commands/self_check/ (2 cmds)
  - selfcheck.ping   "ты тут" / "ты слышишь" / "пинг" / "ты живой"
                     Random pick from 5 short canned replies — no LLM call,
                     no network. Pure mic-chain + TTS smoke test.
  - selfcheck.smoke  "проверь себя" / "самопроверка"
                     Reads jarvis.health() + tries one HTTP request,
                     speaks list of "X работает, Y работает...".

resources/commands/ssl_check/ (1 cmd)
  - ssl.check  "проверь сертификат example.com"
               PowerShell TCP+SslStream→X509Certificate2. Reports days
               until expiry, expiry date, issuer CN. Adds urgency prefix
               ("СКОРО!" if <7 days, "Скоро." if <30, "просрочен!" if past).

Pack count: 70 → 72. Tests: 115/115 + 1 ignored Ollama smoke.
Build: cargo build --release -p jarvis-app green.

crates/jarvis-core/src/commands.rs

@@ -14,6 +14,83 @@ use crate::{config, i18n, APP_DIR};
 #[cfg(feature = "lua")]
 use crate::lua::{self, SandboxLevel, CommandContext};
 
+#[cfg(test)]
+mod additional_tests {
+    use super::*;
+    use std::path::Path;
+
+    fn resources_commands_dir() -> std::path::PathBuf {
+        Path::new(env!("CARGO_MANIFEST_DIR"))
+            .parent().unwrap()
+            .parent().unwrap()
+            .join("resources/commands")
+    }
+
+    fn load_all_packs() -> Vec<(std::path::PathBuf, JCommandsList)> {
+        let dir = resources_commands_dir();
+        let mut out = Vec::new();
+        for entry in std::fs::read_dir(&dir).expect("read_dir resources/commands").flatten() {
+            let toml_file = entry.path().join("command.toml");
+            if !toml_file.exists() { continue; }
+            let body = std::fs::read_to_string(&toml_file).expect("read toml");
+            let pack: JCommandsList = toml::from_str(&body).expect(&format!(
+                "parse {}", toml_file.display()
+            ));
+            out.push((entry.path(), pack));
+        }
+        out
+    }
+
+    #[test]
+    fn no_duplicate_command_ids_across_packs() {
+        let packs = load_all_packs();
+        let mut seen: std::collections::HashMap<String, String> = std::collections::HashMap::new();
+        for (path, pack) in &packs {
+            let pack_name = path.file_name()
+                .map(|s| s.to_string_lossy().to_string())
+                .unwrap_or_else(|| "?".into());
+            for cmd in &pack.commands {
+                if let Some(prev) = seen.insert(cmd.id.clone(), pack_name.clone()) {
+                    panic!("duplicate command id '{}' in packs '{}' and '{}'",
+                        cmd.id, prev, pack_name);
+                }
+            }
+        }
+    }
+
+    #[test]
+    fn no_empty_phrases_for_any_language() {
+        let packs = load_all_packs();
+        for (_, pack) in &packs {
+            for cmd in &pack.commands {
+                for (lang, phrases) in &cmd.phrases {
+                    for (i, phrase) in phrases.iter().enumerate() {
+                        let trimmed = phrase.trim();
+                        assert!(!trimmed.is_empty(),
+                            "command '{}' has empty phrase #{} in lang '{}'",
+                            cmd.id, i, lang);
+                    }
+                }
+            }
+        }
+    }
+
+    #[test]
+    fn all_lua_packs_reference_existing_scripts() {
+        let packs = load_all_packs();
+        for (path, pack) in &packs {
+            for cmd in &pack.commands {
+                if cmd.cmd_type == "lua" && !cmd.script.is_empty() {
+                    let script_path = path.join(&cmd.script);
+                    assert!(script_path.is_file(),
+                        "command '{}' references missing script: {}",
+                        cmd.id, script_path.display());
+                }
+            }
+        }
+    }
+}
+
 pub fn parse_commands() -> Result<Vec<JCommandsList>, String> {
     let mut commands: Vec<JCommandsList> = Vec::new();