diff --git a/crates/jarvis-app/src/llm_fallback.rs b/crates/jarvis-app/src/llm_fallback.rs
index 5bc91da..086037b 100644
--- a/crates/jarvis-app/src/llm_fallback.rs
+++ b/crates/jarvis-app/src/llm_fallback.rs
@@ -4,14 +4,16 @@ use parking_lot::Mutex;
 use jarvis_core::config;
 use jarvis_core::i18n;
 use jarvis_core::ipc::{self, IpcEvent};
-use jarvis_core::llm::{ChatMessage, ConversationHistory, LlmClient};
+use jarvis_core::llm::{self, ChatMessage, ConversationHistory};
 use jarvis_core::long_term_memory;
 use jarvis_core::profiles;
 use jarvis_core::tts::{self, SpeakOpts};
 use jarvis_core::voices;
 
+// State now only holds conversation history — the actual LLM client lives in
+// `jarvis_core::llm::GLOBAL` so that voice/Lua commands can hot-swap backends
+// (Ollama ↔ Groq) without rebuilding this module's state.
 struct State {
-    client: LlmClient,
     history: Mutex<ConversationHistory>,
     max_tokens: u32,
 }
@@ -28,21 +30,18 @@ fn build_state() -> Option<State> {
         return None;
     }
 
-    let client = match LlmClient::from_env() {
-        Ok(c) => c,
-        Err(e) => {
-            warn!("LLM fallback disabled: {}. Set GROQ_TOKEN or run Ollama to enable.", e);
-            return None;
-        }
-    };
+    // Initialise the shared global client (idempotent — fine if init was already called).
+    if let Err(e) = llm::init_global() {
+        warn!("LLM fallback disabled: {}. Set GROQ_TOKEN or run Ollama to enable.", e);
+        return None;
+    }
 
     let lang = i18n::get_language();
     let prompt = config::get_llm_system_prompt(&lang);
     let history = Mutex::new(ConversationHistory::new(prompt, config::LLM_DEFAULT_MAX_HISTORY));
 
-    info!("LLM fallback enabled (backend: {}, model: {}).", client.backend().name(), client.model());
+    info!("LLM fallback enabled (backend: {}).", llm::current_backend_name());
     Some(State {
-        client,
         history,
         max_tokens: config::LLM_DEFAULT_MAX_TOKENS,
     })
@@ -116,7 +115,15 @@ pub fn handle(prompt: &str) {
         snap
     };
 
-    match state.client.complete(&snapshot, state.max_tokens) {
+    let client = match llm::current() {
+        Some(c) => c,
+        None => {
+            warn!("LLM call but global client missing — ignoring.");
+            return;
+        }
+    };
+
+    match client.complete(&snapshot, state.max_tokens) {
         Ok(reply) => {
             let reply = reply.trim().to_string();
             info!("LLM reply: {}", reply);
diff --git a/crates/jarvis-app/src/llm_router.rs b/crates/jarvis-app/src/llm_router.rs
index 267179c..b9963d6 100644
--- a/crates/jarvis-app/src/llm_router.rs
+++ b/crates/jarvis-app/src/llm_router.rs
@@ -13,7 +13,7 @@ use serde::Deserialize;
 
 use jarvis_core::config;
 use jarvis_core::i18n;
-use jarvis_core::llm::{ChatMessage, LlmClient};
+use jarvis_core::llm::{self, ChatMessage};
 use jarvis_core::{JCommandsList, COMMANDS_LIST};
 
 const SYSTEM_PROMPT_RU: &str = "Ты — диспетчер голосовых команд J.A.R.V.I.S. \
@@ -38,7 +38,6 @@ const TOP_P: f32 = 0.9;
 const MAX_PHRASES_PER_CMD: usize = 4;
 
 struct State {
-    client: LlmClient,
     threshold: f32,
 }
 
@@ -53,18 +52,18 @@ fn build_state() -> Option<State> {
         info!("LLM router disabled (set JARVIS_LLM_ROUTER=1 to enable).");
         return None;
     }
-    let client = match LlmClient::from_env() {
-        Ok(c) => c,
-        Err(e) => {
+    // The actual LlmClient lives in the shared global; just make sure it's initialised.
+    if llm::current().is_none() {
+        if let Err(e) = llm::init_global() {
             warn!("LLM router disabled: {}. Set GROQ_TOKEN or run Ollama to enable.", e);
             return None;
         }
-    };
+    }
     let threshold = jarvis_core::runtime_config::llm_router_threshold();
-    let _ = DEFAULT_THRESHOLD; // kept for backward visibility in source
+    let _ = DEFAULT_THRESHOLD; // kept for source-doc visibility
 
-    info!("LLM router enabled (backend: {}, threshold {:.2}).", client.backend().name(), threshold);
-    Some(State { client, threshold })
+    info!("LLM router enabled (backend: {}, threshold {:.2}).", llm::current_backend_name(), threshold);
+    Some(State { threshold })
 }
 
 fn router_enabled() -> bool {
@@ -110,7 +109,8 @@ pub fn try_route(text: &str) -> Option<RouteResult> {
         ChatMessage::user(prompt),
     ];
 
-    let raw = match state.client.complete_with(&messages, MAX_TOKENS, TEMPERATURE, TOP_P) {
+    let client = llm::current()?;
+    let raw = match client.complete_with(&messages, MAX_TOKENS, TEMPERATURE, TOP_P) {
         Ok(r) => r,
         Err(e) => {
             warn!("LLM router request failed: {}", e);
diff --git a/crates/jarvis-app/src/main.rs b/crates/jarvis-app/src/main.rs
index cb43bc3..86d831b 100644
--- a/crates/jarvis-app/src/main.rs
+++ b/crates/jarvis-app/src/main.rs
@@ -60,6 +60,11 @@ fn main() -> Result<(), String> {
     eprintln!("[jarvis-app] step: runtime_config::log_effective_config");
     jarvis_core::runtime_config::log_effective_config();
 
+    eprintln!("[jarvis-app] step: tts pre-warm");
+    // Touch the TTS backend so first speech doesn't pay init cost (Piper binary
+    // discovery, voice loading). All subsequent speak() calls reuse the same Arc.
+    let _ = jarvis_core::tts::backend();
+
     eprintln!("[jarvis-app] step: llm_fallback::init");
     llm_fallback::init();
 
diff --git a/crates/jarvis-core/src/llm/mod.rs b/crates/jarvis-core/src/llm/mod.rs
index e4ba4ee..5ac2aa6 100644
--- a/crates/jarvis-core/src/llm/mod.rs
+++ b/crates/jarvis-core/src/llm/mod.rs
@@ -2,7 +2,65 @@ mod client;
 mod history;
 
 pub use client::{
-    ChatMessage, ConfigError, LlmClient, LlmError,
+    ChatMessage, ConfigError, LlmBackend, LlmClient, LlmError,
     DEFAULT_BASE_URL, DEFAULT_MODEL, ENV_BASE_URL, ENV_MODEL, ENV_TOKEN,
+    OLLAMA_DEFAULT_BASE_URL, OLLAMA_DEFAULT_MODEL,
 };
 pub use history::ConversationHistory;
+
+use once_cell::sync::Lazy;
+use parking_lot::RwLock;
+use std::sync::Arc;
+
+/// Shared mutable LLM client. Modules read via `current()`; the user can
+/// hot-swap backends at runtime via `swap_to(LlmBackend::Ollama)` etc.
+///
+/// `None` means LLM is disabled (no GROQ_TOKEN and no Ollama reachable, or
+/// `init_global()` was never called).
+static GLOBAL: Lazy<RwLock<Option<Arc<LlmClient>>>> = Lazy::new(|| RwLock::new(None));
+
+/// Initialise the global client from env vars (`JARVIS_LLM`, `GROQ_TOKEN`, ...).
+/// Idempotent — replaces any previous global. Returns Ok even when the chosen
+/// backend can't be probed: an Ollama server may not be running yet but we
+/// stash the client anyway and let calls fail on first request.
+pub fn init_global() -> Result<(), ConfigError> {
+    let c = LlmClient::from_env()?;
+    log::info!("LLM global initialised: backend={}, model={}", c.backend().name(), c.model());
+    *GLOBAL.write() = Some(Arc::new(c));
+    Ok(())
+}
+
+/// Return a clone of the active client. Cheap (Arc).
+pub fn current() -> Option<Arc<LlmClient>> {
+    GLOBAL.read().clone()
+}
+
+/// Name of the currently active backend, or "none" if not initialised.
+pub fn current_backend_name() -> &'static str {
+    match GLOBAL.read().as_ref().map(|c| c.backend()) {
+        Some(LlmBackend::Groq) => "groq",
+        Some(LlmBackend::Ollama) => "ollama",
+        None => "none",
+    }
+}
+
+/// Hot-swap to a different backend. Returns the new backend's name on success.
+pub fn swap_to(backend: LlmBackend) -> Result<&'static str, ConfigError> {
+    let c = match backend {
+        LlmBackend::Groq => LlmClient::groq()?,
+        LlmBackend::Ollama => LlmClient::ollama(),
+    };
+    let name = c.backend().name();
+    log::info!("LLM swapped → backend={}, model={}", name, c.model());
+    *GLOBAL.write() = Some(Arc::new(c));
+    Ok(name)
+}
+
+/// Parse a backend name (case-insensitive) into the enum.
+pub fn parse_backend(name: &str) -> Option<LlmBackend> {
+    match name.trim().to_lowercase().as_str() {
+        "groq" | "cloud" | "облако" | "клауд" => Some(LlmBackend::Groq),
+        "ollama" | "local" | "локал" | "локальн" | "локальный" => Some(LlmBackend::Ollama),
+        _ => None,
+    }
+}
diff --git a/crates/jarvis-core/src/lua/api/llm.rs b/crates/jarvis-core/src/lua/api/llm.rs
index 3f00cc8..a966694 100644
--- a/crates/jarvis-core/src/lua/api/llm.rs
+++ b/crates/jarvis-core/src/lua/api/llm.rs
@@ -1,15 +1,18 @@
 use mlua::{Lua, Table, Value};
 
-use crate::llm::{ChatMessage, LlmClient};
+use crate::llm::{self, ChatMessage};
 
-// Lua-callable wrapper around jarvis_core::llm::LlmClient.
-// Centralises the Groq plumbing so command scripts can just say:
+// Lua-callable wrapper around jarvis_core::llm.
+// Command scripts call:
 //   local reply = jarvis.llm(
 //     { {role='system', content='...'}, {role='user', content='...'} },
 //     { temperature = 0.0, max_tokens = 64 }
 //   )
-// Returns the assistant text (string) or nil on any failure (missing token,
-// network error, empty response, etc.) — callers should always check `if reply`.
+// Returns assistant text (string) or nil on any failure.
+//
+// Backend selection is global (see `jarvis_core::llm::swap_to`). Lua scripts can:
+//   jarvis.llm_status()            -> "groq" | "ollama" | "none"
+//   jarvis.llm_switch("ollama")    -> name string on success, nil on failure
 pub fn register(lua: &Lua, jarvis: &Table) -> mlua::Result<()> {
     let chat_fn = lua.create_function(|lua, (messages, opts): (Table, Option<Table>)| {
         let mut chat_messages = Vec::new();
@@ -39,11 +42,18 @@ pub fn register(lua: &Lua, jarvis: &Table) -> mlua::Result<()> {
             if let Ok(v) = o.get::<f32>("top_p")       { top_p = v; }
         }
 
-        let client = match LlmClient::from_env() {
-            Ok(c) => c,
-            Err(e) => {
-                log::warn!("[Lua llm] no client: {}", e);
-                return Ok(Value::Nil);
+        // Prefer the live global client (so runtime backend swap takes effect).
+        // Fall back to a one-shot client from env if global is not initialised.
+        let client = match llm::current() {
+            Some(c) => c,
+            None => {
+                match llm::LlmClient::from_env() {
+                    Ok(c) => std::sync::Arc::new(c),
+                    Err(e) => {
+                        log::warn!("[Lua llm] no client: {}", e);
+                        return Ok(Value::Nil);
+                    }
+                }
             }
         };
 
@@ -58,7 +68,35 @@ pub fn register(lua: &Lua, jarvis: &Table) -> mlua::Result<()> {
             }
         }
     })?;
-
     jarvis.set("llm", chat_fn)?;
+
+    // Current backend name ("groq" | "ollama" | "none").
+    let status_fn = lua.create_function(|_, ()| {
+        Ok(llm::current_backend_name().to_string())
+    })?;
+    jarvis.set("llm_status", status_fn)?;
+
+    // Hot-swap backend. Accepts "groq"/"ollama"/"local"/"cloud"/"локальный"/"облако".
+    // Returns the new backend name on success, nil on failure.
+    let switch_fn = lua.create_function(|lua, name: String| {
+        match llm::parse_backend(&name) {
+            Some(b) => match llm::swap_to(b) {
+                Ok(actual) => {
+                    let s = lua.create_string(actual)?;
+                    Ok(Value::String(s))
+                }
+                Err(e) => {
+                    log::warn!("[Lua llm_switch] swap failed: {}", e);
+                    Ok(Value::Nil)
+                }
+            },
+            None => {
+                log::warn!("[Lua llm_switch] unknown backend name: {}", name);
+                Ok(Value::Nil)
+            }
+        }
+    })?;
+    jarvis.set("llm_switch", switch_fn)?;
+
     Ok(())
 }
diff --git a/crates/jarvis-core/src/lua/api/scheduler.rs b/crates/jarvis-core/src/lua/api/scheduler.rs
index 6c52437..2c08c61 100644
--- a/crates/jarvis-core/src/lua/api/scheduler.rs
+++ b/crates/jarvis-core/src/lua/api/scheduler.rs
@@ -73,6 +73,23 @@ pub fn register(lua: &Lua, jarvis: &Table) -> mlua::Result<()> {
     })?;
     sched.set("clear", clear_fn)?;
 
+    // Remove all tasks whose name OR speak text matches `query` (substring,
+    // case-insensitive). Returns count removed.
+    let remove_by_text_fn = lua.create_function(|_, query: String| {
+        Ok(scheduler::remove_by_text(&query))
+    })?;
+    sched.set("remove_by_text", remove_by_text_fn)?;
+
+    // Find (don't remove) tasks matching query. Returns array of tasks.
+    let find_by_text_fn = lua.create_function(|lua, (query, n): (String, Option<usize>)| {
+        let arr = lua.create_table()?;
+        for (i, t) in scheduler::find_by_text(&query, n.unwrap_or(5)).iter().enumerate() {
+            arr.set(i + 1, task_to_lua(lua, t)?)?;
+        }
+        Ok(arr)
+    })?;
+    sched.set("find_by_text", find_by_text_fn)?;
+
     let list_fn = lua.create_function(|lua, ()| {
         let arr = lua.create_table()?;
         for (i, t) in scheduler::list().iter().enumerate() {
diff --git a/crates/jarvis-core/src/scheduler.rs b/crates/jarvis-core/src/scheduler.rs
index d0ad36f..59f622b 100644
--- a/crates/jarvis-core/src/scheduler.rs
+++ b/crates/jarvis-core/src/scheduler.rs
@@ -293,6 +293,54 @@ pub fn list() -> Vec<ScheduledTask> {
     state.store.read().tasks.clone()
 }
 
+/// Case-insensitive substring search across `name` + any `Speak` action text.
+/// Returns matched tasks (clones) up to `limit`.
+pub fn find_by_text(query: &str, limit: usize) -> Vec<ScheduledTask> {
+    find_by_text_in(&list(), query, limit)
+}
+
+/// Pure logic split out for testing.
+pub(crate) fn find_by_text_in(tasks: &[ScheduledTask], query: &str, limit: usize) -> Vec<ScheduledTask> {
+    let nq = query.trim().to_lowercase();
+    if nq.is_empty() { return Vec::new(); }
+    let mut hits: Vec<ScheduledTask> = tasks.iter()
+        .filter(|t| {
+            if t.name.to_lowercase().contains(&nq) { return true; }
+            if let Action::Speak { text } = &t.action {
+                if text.to_lowercase().contains(&nq) { return true; }
+            }
+            false
+        })
+        .cloned()
+        .collect();
+    hits.truncate(limit.max(1));
+    hits
+}
+
+/// Remove all tasks whose name or speak text matches `query`. Returns count.
+pub fn remove_by_text(query: &str) -> usize {
+    let Some(state) = STATE.get() else { return 0; };
+    let nq = query.trim().to_lowercase();
+    if nq.is_empty() { return 0; }
+    let removed = {
+        let mut store = state.store.write();
+        let before = store.tasks.len();
+        store.tasks.retain(|t| {
+            let name_match = t.name.to_lowercase().contains(&nq);
+            let text_match = if let Action::Speak { text } = &t.action {
+                text.to_lowercase().contains(&nq)
+            } else { false };
+            !(name_match || text_match)
+        });
+        before - store.tasks.len()
+    };
+    if removed > 0 {
+        persist(state);
+        info!("Scheduler: removed {} tasks matching '{}'", removed, query);
+    }
+    removed
+}
+
 pub fn find(id: &str) -> Option<ScheduledTask> {
     let state = STATE.get()?;
     state.store.read().tasks.iter().find(|t| t.id == id).cloned()
@@ -446,4 +494,45 @@ mod tests {
         assert_eq!(s.next_fire(None, 1000), Some(500));
         assert_eq!(s.next_fire(Some(500), 1000), None);
     }
+
+    fn speak_task(id: &str, name: &str, text: &str) -> ScheduledTask {
+        ScheduledTask {
+            id: id.into(),
+            name: name.into(),
+            schedule: Schedule::Interval { seconds: 60 },
+            action: Action::Speak { text: text.into() },
+            last_fired: None,
+            enabled: true,
+            created_at: 0,
+        }
+    }
+
+    #[test]
+    fn find_by_text_matches_name() {
+        let tasks = vec![
+            speak_task("a", "Drink water", "Попей воды."),
+            speak_task("b", "Stretch", "Разомнись."),
+        ];
+        let hits = find_by_text_in(&tasks, "water", 5);
+        assert_eq!(hits.len(), 1);
+        assert_eq!(hits[0].id, "a");
+    }
+
+    #[test]
+    fn find_by_text_matches_speak_text_case_insensitive() {
+        let tasks = vec![
+            speak_task("a", "X", "Попей воды."),
+            speak_task("b", "Y", "Разомнись."),
+        ];
+        let hits = find_by_text_in(&tasks, "ВОД", 5);
+        assert_eq!(hits.len(), 1);
+        assert_eq!(hits[0].id, "a");
+    }
+
+    #[test]
+    fn find_by_text_empty_query_returns_nothing() {
+        let tasks = vec![speak_task("a", "X", "Y")];
+        assert!(find_by_text_in(&tasks, "", 5).is_empty());
+        assert!(find_by_text_in(&tasks, "   ", 5).is_empty());
+    }
 }
diff --git a/resources/commands/codebase_qa/ask.lua b/resources/commands/codebase_qa/ask.lua
new file mode 100644
index 0000000..e6bfaca
--- /dev/null
+++ b/resources/commands/codebase_qa/ask.lua
@@ -0,0 +1,98 @@
+-- "что делает функция X" / "найди в коде Y"
+-- Reads a digest of source files in the configured codebase root, sends to LLM.
+local root = jarvis.memory.recall("codebase.root")
+if not root or root == "" then
+    return jarvis.cmd.not_found("Сначала укажите проект.")
+end
+
+local phrase = (jarvis.context.phrase or "")
+local question = jarvis.text.strip_trigger(phrase:lower(), {
+    "что делает функция",
+    "вопрос по коду",
+    "спроси код",
+    "найди в проекте",
+    "найди в коде",
+    "что в коде",
+    "объясни код",
+    "ask the codebase",
+    "ask the code",
+    "what does the function",
+    "explain the code",
+})
+question = question:gsub("^[%s,:%.]+", ""):gsub("%s+$", "")
+if question == "" then
+    return jarvis.cmd.error("Сформулируйте вопрос.")
+end
+
+-- Build a digest: walk depth-2, pick source files by extension, cap per-file size + total size.
+local EXT_OK = {
+    rs=true, lua=true, py=true, ts=true, tsx=true, js=true, jsx=true, svelte=true,
+    go=true, java=true, kt=true, c=true, h=true, cpp=true, hpp=true, cs=true,
+    rb=true, php=true, sh=true, ps1=true, sql=true, toml=true, yaml=true, yml=true,
+    json=true, md=true,
+}
+local SKIP_DIR = {
+    [".git"]=true, ["target"]=true, ["node_modules"]=true, ["dist"]=true, ["build"]=true,
+    ["__pycache__"]=true, [".venv"]=true, ["venv"]=true, [".idea"]=true, [".vscode"]=true,
+}
+
+local MAX_FILE_BYTES = 4096      -- ~1k tokens per file
+local MAX_TOTAL_BYTES = 50000    -- ~12k tokens total for digest
+local MAX_FILES = 30
+
+local function walk(dir, depth, acc)
+    if depth > 3 then return end
+    local entries = jarvis.fs.list(dir)
+    if not entries then return end
+    for _, ent in ipairs(entries) do
+        if #acc.files >= MAX_FILES or acc.bytes >= MAX_TOTAL_BYTES then
+            return
+        end
+        local name = ent.name
+        local full = dir .. "\\" .. name
+        if ent.is_dir then
+            if not SKIP_DIR[name] and not name:match("^%.") then
+                walk(full, depth + 1, acc)
+            end
+        else
+            local ext = name:match("%.([%w]+)$")
+            if ext and EXT_OK[ext:lower()] then
+                local content = jarvis.fs.read(full)
+                if content then
+                    if #content > MAX_FILE_BYTES then
+                        content = content:sub(1, MAX_FILE_BYTES) .. "\n... [truncated]"
+                    end
+                    -- relative path for readability
+                    local rel = full:sub(#root + 2)
+                    table.insert(acc.files, "--- " .. rel .. " ---\n" .. content)
+                    acc.bytes = acc.bytes + #content
+                end
+            end
+        end
+    end
+end
+
+local acc = { files = {}, bytes = 0 }
+walk(root, 1, acc)
+
+if #acc.files == 0 then
+    return jarvis.cmd.not_found("Не нашёл исходников в проекте.")
+end
+
+local digest = table.concat(acc.files, "\n\n")
+local prompt = string.format(
+    "Ты — старший разработчик. По digest проекта ответь на вопрос пользователя кратко (3-5 предложений) на русском. Указывай файлы где уместно.\n\n=== ВОПРОС ===\n%s\n\n=== КОД ===\n%s",
+    question, digest
+)
+
+local reply = jarvis.llm({
+    { role = "system", content = "Ты — внимательный код-ревьюер. Отвечай по существу, без воды." },
+    { role = "user", content = prompt }
+}, { max_tokens = 400, temperature = 0.2 })
+
+if not reply or reply == "" then
+    return jarvis.cmd.error("Не получилось получить ответ.")
+end
+
+jarvis.system.notify("Codebase Q&A", reply:sub(1, 250))
+return jarvis.cmd.ok(reply)
diff --git a/resources/commands/codebase_qa/command.toml b/resources/commands/codebase_qa/command.toml
new file mode 100644
index 0000000..ecd9e80
--- /dev/null
+++ b/resources/commands/codebase_qa/command.toml
@@ -0,0 +1,61 @@
+# Codebase Q&A — point J.A.R.V.I.S. at a folder, ask questions about the code.
+# Active folder stored via jarvis.memory (key="codebase.root"). Voice commands let
+# you swap the folder, list it, and ask questions. The script reads files lazily
+# (depth-limited, size-capped) and feeds a digest to the LLM.
+
+[[commands]]
+id = "codebase.set"
+type = "lua"
+script = "set.lua"
+sandbox = "full"
+timeout = 5000
+
+[commands.phrases]
+ru = [
+    "укажи проект",
+    "укажи папку проекта",
+    "укажи кодовую базу",
+    "выбери проект",
+    "проект сейчас",
+]
+en = ["set codebase", "set project folder", "use project"]
+ua = ["вкажи проект", "вкажи папку проекту"]
+
+
+[[commands]]
+id = "codebase.ask"
+type = "lua"
+script = "ask.lua"
+sandbox = "full"
+timeout = 60000
+
+[commands.phrases]
+ru = [
+    "спроси код",
+    "вопрос по коду",
+    "что в коде",
+    "что делает функция",
+    "найди в коде",
+    "найди в проекте",
+    "объясни код",
+]
+en = ["ask the code", "ask the codebase", "what does the function", "explain the code"]
+ua = ["що в коді", "що робить функція"]
+
+
+[[commands]]
+id = "codebase.where"
+type = "lua"
+script = "where.lua"
+sandbox = "full"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "какой проект сейчас",
+    "где проект",
+    "какая папка проекта",
+    "какая кодовая база",
+]
+en = ["which project", "what's the codebase"]
+ua = ["який проект"]
diff --git a/resources/commands/codebase_qa/set.lua b/resources/commands/codebase_qa/set.lua
new file mode 100644
index 0000000..82b7075
--- /dev/null
+++ b/resources/commands/codebase_qa/set.lua
@@ -0,0 +1,29 @@
+-- "Укажи проект C:\Jarvis\rust" — stores path in memory under key "codebase.root"
+local phrase = (jarvis.context.phrase or "")
+
+local body = jarvis.text.strip_trigger(phrase:lower(), {
+    "укажи папку проекта",
+    "укажи кодовую базу",
+    "укажи проект",
+    "выбери проект",
+    "проект сейчас",
+    "set codebase",
+    "set project folder",
+    "use project",
+})
+body = body:gsub("^[%s,:%.]+", ""):gsub("%s+$", "")
+
+-- Path can have backslashes/spaces — preserve original casing by picking from raw phrase
+local raw = phrase:sub(#phrase - #body + 1):gsub("^[%s,:%.]+", ""):gsub("%s+$", "")
+local path = raw ~= "" and raw or body
+
+if path == "" then
+    return jarvis.cmd.error("Укажите путь к папке проекта.")
+end
+
+if not jarvis.fs.is_dir(path) then
+    return jarvis.cmd.error("Папка не найдена: " .. path)
+end
+
+jarvis.memory.remember("codebase.root", path)
+return jarvis.cmd.ok("Проект установлен.")
diff --git a/resources/commands/codebase_qa/where.lua b/resources/commands/codebase_qa/where.lua
new file mode 100644
index 0000000..28b3376
--- /dev/null
+++ b/resources/commands/codebase_qa/where.lua
@@ -0,0 +1,5 @@
+local root = jarvis.memory.recall("codebase.root")
+if not root or root == "" then
+    return jarvis.cmd.not_found("Проект не выбран. Скажите: укажи проект.")
+end
+return jarvis.cmd.ok("Сейчас работаю с проектом " .. root .. ".")
diff --git a/resources/commands/llm_switch/command.toml b/resources/commands/llm_switch/command.toml
new file mode 100644
index 0000000..ce1f194
--- /dev/null
+++ b/resources/commands/llm_switch/command.toml
@@ -0,0 +1,62 @@
+# Switch between local (Ollama) and cloud (Groq) LLM at runtime.
+
+[[commands]]
+id = "llm.switch.local"
+type = "lua"
+script = "switch.lua"
+sandbox = "standard"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "переключись на локальный",
+    "переключись на локальный мозг",
+    "включи локальный режим",
+    "перейди на локальный",
+    "используй локальный",
+    "перейди на оллама",
+    "используй оллама",
+]
+en = ["switch to local", "use local llm", "use ollama"]
+ua = ["перейди на локальний", "використовуй локальний"]
+
+
+[[commands]]
+id = "llm.switch.cloud"
+type = "lua"
+script = "switch.lua"
+sandbox = "standard"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "переключись на облако",
+    "переключись на облачный",
+    "переключись на грок",
+    "переключись на гроку",
+    "используй облако",
+    "используй грок",
+    "перейди на облако",
+]
+en = ["switch to cloud", "use cloud llm", "use groq"]
+ua = ["перейди на хмару", "використовуй хмару"]
+
+
+[[commands]]
+id = "llm.status"
+type = "lua"
+script = "status.lua"
+sandbox = "minimal"
+timeout = 2000
+
+[commands.phrases]
+ru = [
+    "какой у тебя мозг",
+    "какой ллм",
+    "какой у тебя llm",
+    "облако или локально",
+    "ты сейчас где работаешь",
+    "что за модель",
+]
+en = ["which llm", "are you local or cloud", "what model"]
+ua = ["який ллм", "хмара чи локально"]
diff --git a/resources/commands/llm_switch/status.lua b/resources/commands/llm_switch/status.lua
new file mode 100644
index 0000000..c1d0154
--- /dev/null
+++ b/resources/commands/llm_switch/status.lua
@@ -0,0 +1,8 @@
+local backend = jarvis.llm_status()
+if backend == "groq" then
+    return jarvis.cmd.ok("Сейчас работаю на облаке.")
+elseif backend == "ollama" then
+    return jarvis.cmd.ok("Сейчас работаю локально.")
+else
+    return jarvis.cmd.not_found("LLM не настроен.")
+end
diff --git a/resources/commands/llm_switch/switch.lua b/resources/commands/llm_switch/switch.lua
new file mode 100644
index 0000000..14e0bd9
--- /dev/null
+++ b/resources/commands/llm_switch/switch.lua
@@ -0,0 +1,22 @@
+-- Map command id → backend name (see command.toml).
+local cmd_id = jarvis.context.command_id or ""
+local target
+if cmd_id:match("local") then
+    target = "ollama"
+elseif cmd_id:match("cloud") then
+    target = "groq"
+else
+    return jarvis.cmd.error("Не понял на что переключать.")
+end
+
+local result = jarvis.llm_switch(target)
+if not result then
+    local human = (target == "ollama") and "локальный" or "облачный"
+    return jarvis.cmd.error("Не получилось переключиться на " .. human .. ".")
+end
+
+if result == "groq" then
+    return jarvis.cmd.ok("Переключился на облачный мозг.")
+else
+    return jarvis.cmd.ok("Переключился на локальный мозг.")
+end
diff --git a/resources/commands/media_keys/_media.ps1 b/resources/commands/media_keys/_media.ps1
new file mode 100644
index 0000000..fa40948
--- /dev/null
+++ b/resources/commands/media_keys/_media.ps1
@@ -0,0 +1,18 @@
+# Helper: send a Windows media key via user32.keybd_event.
+# Called by key.lua with one argument = decimal VK code.
+param([int]$Vk)
+
+if (-not $Vk) { exit 1 }
+
+Add-Type -TypeDefinition @"
+using System.Runtime.InteropServices;
+public class MediaKey {
+    [DllImport("user32.dll")]
+    public static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, int dwExtraInfo);
+}
+"@
+
+# down + up
+[MediaKey]::keybd_event([byte]$Vk, 0, 0, 0)
+[MediaKey]::keybd_event([byte]$Vk, 0, 2, 0)
+exit 0
diff --git a/resources/commands/media_keys/command.toml b/resources/commands/media_keys/command.toml
new file mode 100644
index 0000000..91b2506
--- /dev/null
+++ b/resources/commands/media_keys/command.toml
@@ -0,0 +1,80 @@
+# Media playback control via Windows virtual media keys.
+# Works with anything that listens to global media keys: Spotify, Yandex Music,
+# YouTube in browser (when tab is focused), Foobar2000, Winamp, etc.
+# No OAuth, no API keys — just sends VK_MEDIA_* via PowerShell SendKeys.
+
+[[commands]]
+id = "media.play_pause"
+type = "lua"
+script = "key.lua"
+sandbox = "full"
+timeout = 2000
+
+[commands.phrases]
+ru = [
+    "пауза",
+    "продолжи",
+    "плей",
+    "включи музыку",
+    "выключи музыку",
+    "приостанови музыку",
+    "снова музыку",
+]
+en = ["pause", "play", "resume music", "stop music"]
+ua = ["пауза", "продовжи"]
+
+
+[[commands]]
+id = "media.next"
+type = "lua"
+script = "key.lua"
+sandbox = "full"
+timeout = 2000
+
+[commands.phrases]
+ru = [
+    "следующий трек",
+    "следующую песню",
+    "перемотай вперёд",
+    "вперёд трек",
+    "переключи на следующую",
+    "next",
+]
+en = ["next track", "next song", "skip"]
+ua = ["наступний трек"]
+
+
+[[commands]]
+id = "media.prev"
+type = "lua"
+script = "key.lua"
+sandbox = "full"
+timeout = 2000
+
+[commands.phrases]
+ru = [
+    "предыдущий трек",
+    "предыдущую песню",
+    "перемотай назад",
+    "назад трек",
+    "переключи на предыдущую",
+    "previous",
+]
+en = ["previous track", "previous song", "back"]
+ua = ["попередній трек"]
+
+
+[[commands]]
+id = "media.stop"
+type = "lua"
+script = "key.lua"
+sandbox = "full"
+timeout = 2000
+
+[commands.phrases]
+ru = [
+    "стоп музыка",
+    "останови плеер",
+]
+en = ["stop", "stop player"]
+ua = ["зупини плеєр"]
diff --git a/resources/commands/media_keys/key.lua b/resources/commands/media_keys/key.lua
new file mode 100644
index 0000000..dc695be
--- /dev/null
+++ b/resources/commands/media_keys/key.lua
@@ -0,0 +1,26 @@
+-- Map command id → VK_MEDIA_* virtual key code.
+-- See https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
+local cmd_id = jarvis.context.command_id or ""
+
+local VK = {
+    ["media.play_pause"] = 179,  -- VK_MEDIA_PLAY_PAUSE (0xB3)
+    ["media.next"]       = 176,  -- VK_MEDIA_NEXT_TRACK (0xB0)
+    ["media.prev"]       = 177,  -- VK_MEDIA_PREV_TRACK (0xB1)
+    ["media.stop"]       = 178,  -- VK_MEDIA_STOP       (0xB2)
+}
+
+local code = VK[cmd_id]
+if not code then
+    return jarvis.cmd.error("Неизвестная медиа-команда.")
+end
+
+local helper = jarvis.context.command_path .. "\\_media.ps1"
+local cmd_str = string.format(
+    'powershell -NoProfile -ExecutionPolicy Bypass -File "%s" %d',
+    helper, code
+)
+
+jarvis.system.exec(cmd_str)
+
+-- silent — feedback would be annoying for media-key spam
+return jarvis.cmd.silent_ok()
diff --git a/resources/commands/scheduler/cancel_by_text.lua b/resources/commands/scheduler/cancel_by_text.lua
new file mode 100644
index 0000000..b4471d3
--- /dev/null
+++ b/resources/commands/scheduler/cancel_by_text.lua
@@ -0,0 +1,27 @@
+-- "Отмени напоминание про воду" / "удали задачу про разминку"
+local phrase = (jarvis.context.phrase or ""):lower()
+
+local query = jarvis.text.strip_trigger(phrase, {
+    "отмени напоминание про",
+    "отмени напоминание о",
+    "удали задачу про",
+    "удали задачу о",
+    "отмени про",
+    "забудь напоминание про",
+    "cancel reminder about",
+})
+query = query:gsub("^[%s,:%.]+", ""):gsub("%s+$", "")
+
+if query == "" then
+    return jarvis.cmd.error("Что именно отменить?")
+end
+
+local n = jarvis.scheduler.remove_by_text(query)
+if n == 0 then
+    return jarvis.cmd.not_found("Не нашёл напоминаний про " .. query .. ".")
+end
+
+if n == 1 then
+    return jarvis.cmd.ok("Отменил напоминание.")
+end
+return jarvis.cmd.ok(string.format("Отменил %d напоминаний про %s.", n, query))
diff --git a/resources/commands/scheduler/command.toml b/resources/commands/scheduler/command.toml
index 29a8b08..7fb4069 100644
--- a/resources/commands/scheduler/command.toml
+++ b/resources/commands/scheduler/command.toml
@@ -107,3 +107,28 @@ ru = [
 ]
 en = ["clear schedule", "cancel all reminders"]
 ua = ["очисти розклад", "скасуй всі нагадування"]
+
+
+[[commands]]
+id = "scheduler.cancel_by_text"
+type = "lua"
+script = "cancel_by_text.lua"
+sandbox = "minimal"
+timeout = 3000
+
+[commands.phrases]
+ru = [
+    "отмени напоминание про",
+    "отмени напоминание о",
+    "удали задачу про",
+    "удали задачу о",
+    "отмени про",
+    "забудь напоминание про",
+]
+en = [
+    "cancel reminder about",
+    "remove task about",
+]
+ua = [
+    "скасуй нагадування про",
+]